Breakdown

Breakdown (pronounced breyk-doun)

(1) Of machines, a breaking down, wearing out, or sudden loss of ability to function efficiently; something, typically a vehicle or other machine that has experienced mechanical failure.

(2) In political science (of societies), economic collapse, societal fracturing etc.

(3) In mental or physical health, a form of collapse (figurative & literal), associated typically (1) with a sudden worsening of physical health (although that may be the culmination of long-existing issues) or (more commonly) mental stability, resulting in an inability to carry on normal activities; an instance of these manifestations.

(4) In relationships (personal or institutional), a fracturing of previous feelings or arrangements between parties; a failure of or within a relationship; often as a prelude to a “break-up”; a failure or loss of organization in a system.

(5) An analysis or classification of something; division into parts, categories, processes etc; a separation of a thing into components; decomposition, fragmentation.

(6) The detailed categorization, itemization or listing of the components of a thing (usually in printed or digital form).

(7) In biology & chemistry, the natural process of decomposition; specifically in chemistry, the breaking of chemical bonds within a compound to produce simpler compounds or elements; an instance of this.

(8) In physics, the sudden (sometimes damaging) transition of an electrical insulator to a conductor when subjected to a sufficiently strong voltage, caused by the partial or complete ionization of the insulator; an instance of this; also, the minimum voltage at which this occurs.  The classic example is an electric discharge passing through faulty insulation or other material used to separate circuits or passing between electrodes in a vacuum or gas-filled tube.

(9) In bodybuilding, gym routines etc, the “drop set” (a weight training technique).

(10) In veterinary use (equine medicine), injury to a horse's leg causing lameness; an instance of this.

(11) In rugby union, the short period of open play immediately after a tackle and before and during the ensuing ruck (and, to some extent, the maul). 

(12) In film, television (and such) production, a detailed description of a forthcoming project or screenplay which identifies all the required elements, such as the cast, costumes, equipment, props, special effects etc (separate from financing aspects likely also to involve multiple breakdowns, often on spreadsheets).

(13) In forestry, an act of splitting logs of wood using a large saw in a sawmill; the saw used or (rarely) the building in which the process is carried out (use of the term uncommon outside New Zealand.

(14) In music, a part of a piece of a composition that differs from other parts in that it features improvisation or is stripped down (played using fewer instruments or performed by a soloist).

(15) In music, a synonym of “percussion break” (a percussion-focused segment of a song, interpolated through cutting, mixing, and other techniques in order to create “rhythmic music”).

(16) In music, (especially the ominous-sounding sub-genres metalcore, grindcore, & deathcore (the distinction best explained by experts)), a section of a song, characterized by a lower tempo, greater “heaviness” and intensity of sound.

(17) In music, a loud, lively dance from folk traditions, historically conducted usually in a rural setting, most prevalent in the US, south of the Mason-Dixon Line; the terms  “hoedown” & “shindig” are related; a piece of music played for such an event, historically especially the rapid bluegrass tunes featuring the five-string banjo.

1832: The construct was break + down.  Break was From the Middle English breken, from the Old English brecan (to divide solid matter violently into parts or fragments; to injure, violate (a promise, undertaking etc.), destroy, curtail; to break into, rush into; to burst forth, spring out; to subdue, tame (the past tense of bræc & past participle of brocen), from the Proto-West Germanic brekan, from the Proto-Germanic brekanan (source also of the Old Frisian breka, the Dutch breken, the Old High German brehhan, the German brechen and the Gothic brikan), from the primitive Indo-European root bhreg- (to break).  There evolved strong linguistic links with brick, brake & breach.  The thirteen century past tense “brake” became archaic but the past participle “broken” endured, the shortened form “broke” in use by at least the mid 1300s and said by the OED (Oxford English Dictionary) to be “exceedingly common” during the eighteenth & nineteenth centuries.  The alternative form is the hyphenated break-down and in scientific use the two spellings can be applied for different purposes.  Breakdown is a noun; the noun plural is breakdowns.

Poster for Women on the Verge of a Nervous Breakdown (1989).

The early nineteenth century use was in the sense of “a collapse, a falling apart”, and was of machinery or mechanical processes; the use in metal health (as “nervous breakdown”) documented in the medical literature since 1866 but clinical or oral use may have a longer history.  As a transitive verb, the phrase “break down” was in use by at least the late fourteenth century (in the sense “take down by breaking” while as an intransitive verb (“come down by breaking”), use seems to have emerged in the late 1820s.  As early as 1856 the use is attested in the sense of “to fail through incapacity, excess emotion etc” and this presumably influence the adoption a decade later in the context of discussing mental health (it was in the mid nineteenth century something recognizable as “psychiatry” (in the modern understanding) began to evolve.  The noun (specifically of machinery) was in use by at least 1838 while the meaning “an analysis in detail” emerged in US management jargon in the mid 1930s, based on the notion of “breaking a process into its component parts to permit better analysis of both the pieces and the whole” (an extension of the verbal phrase in use earlier in the decade in the sense of “analyze, classify”.  The American folk dance tradition of “a noisy, lively dance sometimes accompanied by singing” was documented by 1864 but historians suggest the musical form dated back decades and was recorded in writing only when witnesses from the North were documenting conditions in the South towards the end of the US Civil War (1861-1865).  Breakdown became a common element in formation (breakdown crane, breakdown lane, breakdown lorry, breakdown truck, breakdown point, breakdown voltage, climate breakdown, electrical breakdown, mental breakdown, nervous breakdown, organizational breakdown, structural breakdown, supply-chain breakdown etc.

World Rugby's Laws of Rugby Union (2026 edition).  Although the word “breakdown” is not used, the rules (14, 15 & 16) regulating the well-known concept are detailed on pages 68-80.

Because just about any object could be broken, “break” widely was adapted, even serving (of paper & fabric) a la the later senses of “cut”, “tear” or “divide” although in Old English the sense of a broken bone was always “brecan”.  The intransitive sense of “be or become separated into fragments or parts under action of some force” dates from the late twelfth century, extending within decades to “make a first and partial disclosure” while the idea of “lessen, impair” was current by the late 1400s.  The sense of in some way to “destroy continuity or completeness” was from at least the 1740s while in 1882 the phrase “to break” is recorded in reference to physical currency (ie convert large denomination banknotes or coins into smaller units of the same total value).  Although in principle rugby union remains a simple game (once with a four-page rule book), under the auspices of the wise men of the IRB (International Rugby Board, 1886-2014) and later the equally diligent men & women of World Rugby (since 2014), the core rule book is now a hefty 100-odd pages so while it remains simple (relatively speaking; it’s a game of “shapes” rather than “angles”) to play, it’s quite a challenge for referees and as an example, during a breakdown, one referee might find a half-dozen transgressions to penalize while another would “allow the game to flow”, the latter approach preferred by most spectators.  In those hundred pages, the word “breakdown” doesn’t appear but that aspect of the game is covered by rules 14 (Tackle), 15 (Ruck) & 16 (Maul).

The figurative sense of “breaking someone’s heart” (although in modern medicine it’s now acknowledged people can “die from (figuratively) broken heart”) was in use by the late 1300s and other such adaptations included “break bread together” (share food) (late 1300s); “break ground" (to dig or plough land for agricultural purposes) (1670s and by 1710 that literal use was extended figuratively to mean “begin to execute a plan”)."  To break the ice as to “overcome the feeling of restraint in a new acquaintanceship” and was from the late 1500s, the reference being to the “coldness" of encounters of strangers.  The familiar break wind (the sanitized form of “a fart”) was documented in the 1550s but, farts being more ancient, use could have predated that.  The also familiar “to break (something) out” could come from anywhere but was recorded in the 1890s as dock-worker’s slang describing freeing cargo prior to unloading.  The ironic theatrical good luck incantation “break a leg” was definitely in use early in the twentieth century and similar forms exist also in Italian & German.  According to some sources, in the seventeenth century it was used euphemistically (of a woman) to convey “to have a bastard child.”

Cup of char.  Under the Raj, the ritual of the "tea break" in the Indian Civil Service became codified (time span; size of cup according to the official's grade of employment).

The thirteenth century noun use (act of breaking, forcible disruption or separation) came from the verb but apparently not until the late 1500s was it customary to speak of “daybreak” or “break of day” but that notion was by the 1720s in use with the meaning “a sudden, marked transition from one course, place, or state to another”.  The first meal of the day (ie when one “breaks one’s overnight fasting)” was by the mid fifteenth century routinely called “breakfast”.  The sense of a “short interval between spells of work” began in schools in the 1860s and the concept came widely to be applied (sport, employment etc) and was sometimes codified in rigid forms (by the Indian Civil Service’s “tea break” in 1911 and the BBC (British Broadcasting Corporation) in broadcasting in 1940).  The meaning “stroke of luck” (widely used: “lucky break” or “give me a break”, “never give a sucker an even break” etc) is believed derived from billiards (a game in which the “opening break” (first shot) scatters the ordered balls and is attested from 1865).  The use in music began in the 1920s when jazz musicians began to refer to “improvised passages or solos” thus, the idea being something that was a “break” between structured sections.  The original dance form called “breakdown” (defined by the OED as “a riotous dance, in the style of the negroes”) was probably from some time in the nineteenth century but definitely was from south of the Mason-Dixon Line although element of the style probably can be identified in the folk traditions of many cultures.

Raygun Breaking.

Australian breakdancer (breaker) Dr Rachael “Raygun” Gunn (b 1987), during her much-discussed “highly original” performance at the 2024 Paris Summer Olympics.  Between 2020-2026, Dr Gunn was a lecturer in the Department of Media, Communications, Creative Arts, Language & Literature at Macquarie University Faculty of Arts, Sydney, Australia.  Her Ph.D thesis (2017) was titled Deterritorializing Gender in Sydney's Breakdancing Scene: A B-girl's Experience of B-boying in which she explored “The intersection of gender and Sydney's breaking culture”.  The Ph.D was in the (obviously wide) field “cultural studies” but after her appearance in Paris was publicized, on X (formerly known as Twitter) there was much comment about universities conferring “doctorates in break dancing” being a sign of decline in academic standards.   

The more modern “breakdance” seems to have begun in New York City in the 1970s; it was when DJs (disc jockey) played exclusively the “rhythmic break sections from pop-dance songs” and crowds danced accordingly, originally presumably impromptu but the discipline later evolved into choreographed structures.  If, upon entering a room, one sees breakdancing in progress, one’s comment to one’s companion should be: “We are among barbarians.”  Break dancing was included as a “sport” in the 2024 Olympic Games in Paris although the participants are said to prefer it be called “breaking” and the appearance in Paris is thought to have been an attempt to seek the younger demographic not attracted by the charms of “Olympic traditions” such as Greco-Roman wrestling.  The reaction was mixed and, at this time, Breaking is not on the schedules of either the 2028 (Los Angeles) or 2032 (Brisbane) games.   

Although “down” can be used also as a noun, verb, adjective & preposition, as an element in the noun “breakdown”, it operates as an adverbial particle.  What it does is modify the meaning of the verb “break” (in this sense “indicating separation or failure” to create the new noun.  In this context (in a descending direction, from a higher to a lower place, degree, or condition), the pre 1000 down was from the Middle English doun & doune (down), from the Old English dūne (down), an aphetic (loss of a word's initial unstressed vowel) form of adūne (down, downward), from the earlier ofdūne (down (literally “off the hill”), the construct being of- (of, off) + -dūn(e) (hill, mount, dune, down).  Influencing the development from directional phrases to prepositions were the Old Frisian adverb dene (down (literally “(to the) floor”)), the Middle Low German dāle (down, downwards (literally “(in/to the) dale/valley”) from which the German Low German gained dal (down).  The form was cognate with the Scots doon (down) and can be compared with the Saterland Frisian deel (down (literally “to/into the dale”)) and the West Frisian del (down).  The familiar meaning “in a descending direction, from a higher to a lower place, degree, or condition” was inherited from a late development in the Old English that produced a shortened form of the earlier ofdune.  While in general Germanic, this sense development of “hill" uniquely was English.  As a preposition used to mean “in a descending direction upon or along”, use dates from at least the late fourteenth century.  As an idiomatic form, the uses in English of “down” (both literal and figurative) are legion.

Satirical engraving LADIES! LADIES! Mystery of Modern Modesty, Fun magazine, 12 March, 1870.  At the time there was a national debate about the operation of the Matrimonial Causes Act (1857) and the Women's Property Act (1870).

The 1857 Act created a Court of Divorce and Matrimonial Causes and it was in many ways an advance in women’s rights in that it made divorce more accessible but there was an inherent unfairness (something perhaps not surprising in a law emerging from an all-male parliament).  While, as before, men could divorce their wives on the basis of adultery alone, a woman was compelled to prove not only her husband’s adultery but also an additional cause (one or more of cruelty, desertion, incest, rape, sodomy or bestiality).  It was a sexual double standard, the origins of which can be traced to Biblical scripture and reinforced in law the notion a woman's infidelity was inherently worse than that of a man.  Despite that hurdle, the acts did make things slightly better for women in that for the first time there was statutory protection ensuring a divorced woman’s future earnings and property were shielded from claims by an ex-spouse.  Gradually, other reforms further improved things but what didn’t change until the “no fault” principle to some degree civilized divorce proceedings was that the act made “break-ups after break-downs” into a spectator sport and there were tabloid newspapers with sometimes pages of coverage of the antics of the famous or the more salacious conduct by others.

Breakdownism is legal slang referencing the “no-fault” principle existing in many jurisdictions as grounds for divorce.  First becoming popular during the 1970s, it essentially created “divorce on demand”, a reform that has had far-reaching effects (both good and ill) and is thus far thought the “final state” of Western divorce law; certainly it’s an advance “contested” divorces (often highly entertaining matters for others than the parties whose infidelities were being publicized, sometimes with appropriate photographic evidence.  The classic “contested divorce” was a creature of the old Matrimonial Causes Act (1857); prior to that a “complete divorce” permitting remarriage almost always required a private Act of Parliament, a procedure expensive and highly public.  It was also time-consuming, demanding (1) proceedings in an ecclesiastical court seeking an order of separation, (2) in the case of a husband seeking divorce, a successful action for “criminal conversation” (damages against the adulterer) in a common-law court, (3) a correctly drafted private divorce bill introduced into the House of Commons (“first reading”), (4) debate(s) on the bill (“second reading”) that might see the matter (5) “referred to committee for consideration”, (5) a vote in on the bill (“third reading”) that, if passed would see the bill (proposed law) sent to “the other place” (House of Lords) for (6) three readings, possible committee stages and a vote.  If the bill survived all that, it became an act and upon (7) royal assent being granted (by a monarch or their representative (governor, governor-general etc) it was valid law and the divorce had happened.  The subsequent (8) “gazetting” (publication in the Government Gazette) was merely procedural.

So one really had to want a divorce and have the means to obtain one; given all that, it’s not surprising wives and husbands were sometimes murdered as a “work-around”.  One handy solution was however available to certain colonial administrators resident in places where the Islamic Sharia courts operated, applicants often finding the judges much more sympathetic to men wishing quickly to rid themselves of now unsatisfactory wives.  The concept of “breakdownism” ended most of the legal entertainment and the notion of “irreconcilable differences” became the standard expression cited as grounds for divorce.  Regrettably, the tale of one eighteenth century bishop “bribing or persuading" a parliamentary draftsman to insert in an innocuous (and thus not diligently scrutinized) bill the line: “the Bishop of xxx is declared divorced” appears to be apocryphal and may have begun as an illustrative example of the supremacy of parliament over sovereign & church before becoming a “legal legend”.  It probably is a good thing members of the House of Lords no longer debate whether or not to grant someone a divorce because that would at times have meant Lord Peter “Mandy” Mandelson (b 1953) having a vote and the thought of him opining on matters of the conduct and personal morality of others is something to ponder.  The term “meltdownism” is non-standard and used of those for whom “having meltdowns” seems a calling or who obviously “stage” them as a tactic.

Barnes Auto advertising, circa 1939.

In business before World War I (1914-1918) Barnes Auto operates a towing business in Brisbane, Australia, their trucks still adorned in striking blue and orange stripes.  Around 1937, the decision was taken to build a “streamlined breakdown lorry” and while designers in Europe and the US had for some years been applying aerodynamic techniques to heavy trucks, most were produced to improve average speeds and lower fuel consumption on (relatively) high-speed, long-distance routes.  Influenced by advances in aviation, streamlining since the 1920s increasingly had appeared on vehicles on both sides of the Atlantic, the best remembered the grand prix and LSR (land-speed record) machines but stylists (with and without wind-tunnel data), applied the techniques both to mass-market and expensive vehicles so trucks were a logical subject for study given the importance to operators of time and running costs.  Whether Barnes Auto’s 78 HP (horsepower) breakdown lorry, geared as it was to suit its purpose, would often have attained speeds at which the presumed aerodynamic advantages would have rendered either better performance or economy is dubious and the shape may have been more an art deco inspired “rolling advertisement” rather than a piece of functionalism but, if that was the case, it worked because it appears to be the only Brisbane “tow truck” of the era to have survived as a feature in the photographic record.  Certainly, compared with other trucks at the time on the road, the blue & orange striped machine must have been eye-catching.

Barnes' Breakdown Lorry fully loaded, three behind, one in front.

Lorry is of uncertain origin but thought most likely from the dialectal English lurry (to lug or pull about, to drag).  The use emerged in the early to mid-nineteenth century and was applied initially small carts or wagons (both hand propelled and horse-drawn), use quickly extending to the open carriages used on railroads to haul goods or commodities.  In much of the English-speaking world, from the early twentieth century, use transferred to motorized vehicles used for the same purpose and that made sense because the earliest powered lorries literally were the same “carriages” with an engine and drive-train added.  “Lorry” in that sense endures in some places in the old British Empire (notably in India & Pakistan where the linguistic inheritance of the Raj remains strong) but in many places (certainly North America), “truck” (and other specialized forms) became preferred.  Even in some places where use of “lorry” lingers, it's now often a sometimes rare niche word describing freight-vehicles larger than “pick-ups” but smaller than “trucks”.  In Australia and New Zealand, it's possible “lorry” may go extinct as those who grew up with the word age and die.

“Tugboat Annie”, waiting for a breakdown needing a tow, Mankato, Minnesota, US, 1937.

The coach-built body was created by (the still operating) Watt Brothers of Wolloongabba on a 1938 Dodge two-ton truck chassis, shortened, reinforced and converted to full forward control.  Although new to Brisbane, similar lines had been seen in US, notably on “Tugboat Annie”, built in Mankato, Minnesota and based on a 1937 International cabover tow truck; presumably such things provided the template followed by the Watts.  The 78 HP, six cylinder engine (one of the variants of Chrysler’s long-serving “flathead six, 1924-1963), was connected through a series of reduction gears via a double-faced clutch to a double jib hoist capable of a ten-ton lift with the lifting and trailing gear arranged so four vehicles simultaneously could be towed: three at the rear, one in front, an apparatus now unlikely much to impress Australian regulatory.  There doesn’t appear to be footage of the breakdown lorry on the move with four broken–down cars attached (three to the rear, one in front) but it would have required a driver with skill and experience, especially to handle the behaviour of the one ahead, the whole ensemble presumably acting like something centrally “hinged”.  On aspect that would have assisted in that was the outstanding visibility the styling afforded a driver, the extremities of the load being a critical thing to monitor.  Because of the four-vehicle capacity, an impressive 600 feet (183 metres) of wire rope was carried, the location of the connection-points on the towed vehicles an important factor in maintaining directional control while in movement.  The Breakdown Lorry served throughout World War II (1939-1945) and wasn’t replaced (by a conventionally styled, English-built, crew cab Dodge) until the mid 1950s.  Regrettably, Barnes proved unsentimental about retired equipment and once deemed obsolete, Breakdown Lorry was sent to a local rubbish dump, meaning an improbable piece of art deco history was lost but, because of the evidence in photographic archives, the distinctive lines attracted the model-makers, Autocult releasing one in 1:43 scale.

The Breakdown Lorry with Douglas DC-3, Brisbane International Airport, circa 1942 (colorized image).

In Australia, the DC-3 was operated by the RAAF (Royal Australian Air Force), Ansett Airlines, TAA (Trans Australia Airlines, ANA (Australian National Airways) and a myriad of smaller operators.  Produced mostly between 1936-1945, over 600 were built; robust, economical to operate and with an admirable safety record, it was for years a mainstay of civil aviation and General Dwight Eisenhower (1890-1969; POTUS 1953-1961), who often travelled in one while Supreme Commander Allied Expeditionary Forces (1943-1945), reckoned the DC-3 was one of the tools (others including the bazooka and Jeep) that made Allied victory in World War II possible by 1945.  The DC-3 in the photograph is "Kyilla" (registered as VH-UZJ), the first one imported into Australia (the invoiced cost Aus£41,000).  Delivered in November 1937, it flew with AoA (Airlines of Australia, an operator that in 1931 originally traded as NEA (New England Airlines) before in 1942 being absorbed by ANA).  Between 1939-1940, Kyilla was leased (“temporarily impressed” the wartime terminology) to the RAAF to cover a “delivery gap” and in 1943 it commenced regular service in ANA.

Autocult's 1:43 scale model.

Trucks in the era were anyway low-geared (in some jurisdictions, above a certain gross weight, maximum speeds as low as 30-40 mph (50-70 km/h) sometimes were imposed but the gearbox in the Barnes Breakdown Lorry had an unusually low ratio first-gear (a so-called “stump puller” of the type often seen in agricultural vehicles), enabling it to ascend even the steepest grades, allowing vehicles to be recovered from hilly terrain.  The apparatus used for the double jib hoist must have been intriguing to see and the mechanism, developed in-house by Barns was fine piece of engineering, combining intricacy with robustness while eschewing needless complexity.  In that it followed the maxim on design and problem-solving coined by German architect Professor Heinrich Tessenow (1876-1950): “The simplest form is not always the best, but the best is always simple.”  That was a refinement of novacula Occami (Occam's razor), a principle attributed to the English Franciscan friar, theologian & philosopher Guillelmus de Ockham (William of Ockham circa  1287–1347).  Occam’s razor (the idea one of “cutting away the unnecessary”) recommends searching for explanations constructed with the smallest possible set of elements; on that basis it was styled also as lex parsimoniae (law of parsimony), often glossed as Entia non sunt multiplicanda praeter necessitate (Entities must not be multiplied beyond necessity).  Even today the mechanism on a tow truck is a fine example of Professor Tessnow’s maxim being applied with brutish efficiency although modern regulations mean something as intriguing as Barnes’ “four strand” arrangement can no longer be used.

One of the many curiosities in English is despite “up” & “down” being diametric opposites, “break down” and “break up” can mean the same thing.  In human relationships, it’s not uncommon for a “break-up” of a couple to follow a “break-down” in their relationship but when applied to physical objects, some are said to be “broken down” while others are “broken up”, despite the processes being conceptually much the same.  The apparent anomaly is explained by the history of the industries involved and conventions of English.  As a general principle, of objects, “break down” means “to dismantle something into its constituent parts or to reduce it to a simpler state”, meaning the term is used to emphasize fragmentation, destroying the integrity of something as a single object.  Despite that, the convention in the business of “shipbreaking” (literally “cutting apart” vessels and using the metal as “scrap”) is of being “broken up”.  The origin of shipbreaking dates from the nineteenth century when the iron and later steel that had come to be used for the structures was valued as scrap metal after a vessel’s economic life had ended.  This involved sometimes dozens of workers stripping fittings from hulls before progressively cutting or demolishing what remained, section by section, until nothing recognizably nautical remained.  In the industry and in news reports, even then the process routinely was referred to as “breaking up”. 

Putting up a final struggle: HMS Vanguard aground on the way to the wrecker's yard to be broken up, Portsmouth Harbour, England, 4 August, 1960.

Launched in 1946, Vanguard was the RN's (Royal Navy) last dreadnought and no nation has since commissioned a battleship.  In the space of a half-century, the battleship shifted from the most powerful military weapon on earth to a white elephant and despite use of the word “battleship” during Donald Trump's (b 1946; POTUS 2017-2021 and since 2025) recent mention that the USS Defiant would be the first of the new “Trump Class” of surface warships, the USN (US Navy) will not be launching any true “battleships”, the service having in 1992 struck from the list the last of the four Iowa Class ships commissioned between 1943-1944.

Obviously, shipbreaking, while in a sense a well-planned and careful “disassembly”, was an act of “total and final destruction”, the many pieces of metal sent to be “melted down” before being transformed into something else (not necessarily another ship).  That use of the term was different from the process undertaken by mechanics or technicians when “breaking down” a piece of equipment. Something done typically to effect repairs or maintenance, the emphasis very much on a carefully ordered process, disassembly most systematic because all or some of the components removed would need to be restored to their original positions when the thing was “put back together”.  So that’s how the conventions emerged: (1) “breaking up” a destructive process and (2) “breaking down a step in processes of repair, maintenance or upgrades.  Deconstructing the elements at the etymological level, there’s no reason why the terms couldn’t have been applied the other way round but, by patterns of use, the idiomatic forms became fixed.

A Lindsay Lohan “meltdown scene”, The Canyons (2013).

In the furnaces fed by the shipbreakers, to “melt down” was literally to bring scrap metal to its melting point, meaning it flowed like a liquid and could be cooled to form into shapes able to be re-used (plates, bars, beams etc).  In the post-war years, “meltdown” (first in this context recorded in 1963) ominously became familiar as the graphical encapsulation of what would happen to at least a large part of the core of a nuclear-reactor were the fuel elements subject to inadequate cooling.  The idea was the highly radioactive core would become so hot it would “melt down”, through the floor to the earth below.  Depending on the thickness of the facility’s concrete floor a core could in theory do exactly that but extending the idea to the popular description “China syndrome” was fanciful.  That idiom was based on the notion that if one (in Europe) kept digging a hole, eventually they’d dig “all the way to China” (“China” a synecdoche for “other side of the world”).  In many places the geography would have been dubious but so too the geology; even by 2026 the deepest hole ever dug remains Hole SG-3 (Kola Superdeep Borehole) in Russia’s Murmansk region.  Begun as a Soviet scientific project in 1970, by 1989 it achieved a vertical depth of 12.7 kilometres (7.6 miles) into the Earth's continental crust at which point the project had to be abandoned because temperatures at the drill bit had reached 180°C (356°F), much hotter than the expected 100°C (356°F).  At that level, rock becomes too soft successfully to drill.  Technically, the 12.7 km depth was a remarkable piece of applied engineering but to put the “China Syndrome” into perspective that’s around 0.2% of the way to the planet’s centre (the Earth's radius is some 6,371 kilometres (3959 miles)).

The “Elephant's Foot”, Chernobyl Nuclear Power Plant, Ukraine.  It came more to resemble a boot but when first identified, it was though to be more “pachydermish”.

So, in a nuclear meltdown, a core would have a long way to go and, in the most infamous example to date, the core didn’t get even to the Earth’s surface.  In April 1986, reactor 4 of the Chernobyl Nuclear Power Plant (in Ukraine, then one of the constituent SSRs (Soviet Socialist Republic) of the Soviet Union (1922-1991)) exploded after a serious of procedural errors in what was, with the darkest irony, supposed to be a routine “safety test”.  When the heat of the core passed the “critical point of no return” the meltdown started, the core (a molten, toxic, lava-like mixture of uranium fuel, graphite, steel and concrete (“corium” in the jargon) melted through the bottom of the reactor vessel, flowing through pipes, corridors, and steam suppression pools inside the building.  The core did however stay completely within the facility’s basement levels (made from thick concrete) and it remains radioactive although it has now cooled to the point where it’s possible to stand relatively close without receiving a dangerous dose although, uranium being almost inert, if left undisturbed, when (10 billion years from now) our Sun expires (having “burned up” the fuel sustaining its nuclear fusion) some 25% of it will remain extant and the Elephant's Foot will be about as radioactive as its weight in bananas.  A banana contains Potassium-40 and is about as radioactive as a typical carrot or potato but other foods are more so, Brazil nuts by a factor of more than three.

Bruno Ganz’s “Hitler’s meltdown scene” in Downfall (2004).

In informal use, “meltdown” is used of sudden declines in stock prices or other undesirable “sharp market corrections” but the most popular use is of “dramatic performances” (of grief, rage, despair etc) consequent upon a sudden loss of control over one’s feelings or behavior.  Mothers will be familiar with meltdowns by their toddlers, typically over life-changing issues such as not getting an ice cream or the television being switched-off.  On screen, one of the most famous depictions of a meltdown was the performance of Swiss actor Bruno Ganz (1941-2019) as Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945) in Downfall (2004), a study of the characters in the Führerbunker during the “last days of the Third Reich”.  The performance inspired an entire genre of “Hitler Rant Parodies”, the quality of which is “patchy”.  Hitler’s meltdown came during a military briefing after learning Waffen-SS (Armed SS) Obergruppenführer (general) Felix Steiner (1896–1966) had failed to assemble the forces to launch a relieving attack Hitler had ordered against the Red Army formations besieging Berlin.  That was by then militarily impossible but the unwelcome news induced in Hitler a legendary rant of several minutes during which he ranged against those he thought responsible for his predicament, notably the army’s officer corps and even the previously trusted SS.

The SS (ᛋᛋ in Armanen runes; Schutzstaffel (literally “protection squadron” but translated variously as “protection squad”, “security section" etc) was formed (under different names) in 1923 as a Nazi party squad to provide security at public meetings (then often rowdy and violet affairs) and was later re-purposed as a personal bodyguard for Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945).  The SS name was adopted in 1925 and during the Third Reich the institution evolved into a vast economic, industrial and military apparatus more than two million strong to the point where some historians (and contemporaries) regarded it as a kind of “state within a state”.  The Waffen-SS (armed SS (ie equipped with military-grade weapons)) existed on a small scale as early as 1933 before Hitler’s agreement was secured to create a formation at divisional strength and growth was gradual even after the outbreak of hostilities in 1939 and it was the invasion of the Soviet Union in 1941 which triggered the Waffen-SS’s expansion into a multi-national armoured force with over 900,000 men under arms.  As well as the SS’s role in the administration of the many concentration and extermination camps, the Waffen-SS was widely implicated in war crimes and crimes against humanity.  Towards the end of the meltdown, Hitler, with tears in his eyes, admitted the war was “lost”, something that was by then (or should have been) obvious to all in the bunker.  Although only two of those who witnessed the meltdown survived the war to tell the tale (Generaloberst (Colonel General) Alfred Jodl (1890–1946, chief of the OKW operations staff 1939-1945 and Generalfeldmarschall Wilhelm Keitel (1882–1946; chief of OKW 1938-1945)), such was the volume it was heard by many in an adjoining room and historians agree Ganz’s performance captured the moment.

Toggle

Toggle (pronounced tog-uhl)

(1) A pin, bolt or rod placed transversely through a chain, an eye or loop in a rope etc, as to bind it temporarily to another chain or rope similarly treated.

(2) In various types of machinery, a toggle joint, or a device having one.

(3) An ornamental, rod-shaped button for inserting into a large buttonhole, loop or frog, used especially on sports clothes.

(4) In theatre, a wooden batten across the width of a flat, for strengthening the frame (Also called the toggle rail).

(5) In engineering and construction, a metal device for fastening a toggle rail to a frame (also called a toggle iron); a horizontal piece of wood that is placed on a door, flat, or other wooden structure, but is not on one of the edges of the structure; an appliance for transmitting force at right angles to its direction.

(6) To furnish with a toggle or to bind or fasten with a toggle.

(7) In informal use, to turn, twist, or manipulate a toggle switch; dial or turn the switch of a device (often in the form “to toggle between” alternate states).

(8) A type of switch widely used in motor vehicles until outlawed by safety legislation in the 1960s.

(9) In admiralty jargon, a wooden or metal pin, short rod, crosspiece or similar, fixed transversely in the eye of a rope or chain to be secured to any other loop, ring, or bight.

In computer operating systems and applications, an expression indicating a switch of view, contest, feed, option etc.

(11) In sky-diving, a loop of webbing or a dowel affixed to the end of the steering & brake lines of a parachute providing a means of control.

(12) In whaling, as toggling harpoon, a pre-modern (believed to date from circa 5300 BC) harvesting tool used to impale a whale when thrown.

1769: The origin of toggle is murky and the best guess of most etymologists is it was in some way linked with "tug".  In the sense of a "pin passed through the eye of a rope, strap, or bolt to hold it in place" the origin is believed to be nautical (though not necessarily from the Royal Navy) thus the speculation that it’s a frequentative form of “tug” or “to tug” (in the sense of “to pull”), the evolution influenced by regional (or class-defined) pronunciations similar to tog.  The wall fastener was first sold in 1934 although the toggle bolt had been in use since 1994.  The term “toggle switch” was first used in 1938 although such devices had long been in use in the electrical industry and they were widely used in motor vehicles until outlawed by safety legislation in the 1960s.  In computing, toggle was first documented in 1979 when it referred to a keyboard combination which alternates the function between on & off (in the sense of switching between functions or states as opposed to on & off in the conventional sense).  The verb toggle dated from 1836 in the sense of “make secure with a toggle” and was a direct development from the noun.  In computing, the toggle function (“to toggle back and forth between different actions") was first described in 1982 when documenting the embryonic implementations of multi-tasking (then TSRs (terminate & stay resident programs).  Use of the mysterious togglability (the quality of being togglable) seems to be restricted to computer OSs (operating systems) to distinguish between that which can be switched between and that which is a stand-alone function which must separately be loaded & terminated.

The noun toggery (clothing; a clothing shop) is unrelated and was from tog.  It described (in slang), capes, cloaks & coats and (in New Zealand & Australia), swimwear (as a clipping of "swimming togs").  The origin of tog as various garments was as a shortened form of the earlier togemans & togeman (cloak, loose coat), from the Middle English tog, toge & togue, from the Old French togue, from the Latin toga (cloak, mantle).  Togeman(s) was criminal class cant for "cloak or coat" and in the shortened form "tog" it had spread to general use, by the early eighteenth century meaning "coat" and that also underwent mission keep, coming to be used generally of "clothing".  As a verb tog (as both "tog" & "tog up") emerged very quickly.  The special use of tog in fluid dynamics was as a unit of thermal resistance, being ten times the temperature difference (in °C) between the two surfaces of a material when the flow of heat is equal to one watt per m2.  The discipline in the 1940s appropriated the word from its commercial use as a material used in the thermal insulation of clothing.  Tog was also (as a clipping), slang for "a photographer".  Toggle is a noun & verb, toggled & toggling are verbs, toggler, toggery & togglability are nouns and togglable is an adjective; the noun plural is toggles.

The Jaguar E-Type (XKE) and the toggle switch

1964 Jaguar E-Type S1 OTS (Open Two Seater, as the factory at the time described the roadster body-style.

Jaguar’s E-Type (sometimes in North America (NA) informally called XK-E or XKE) deputed in 1961 at the now defunct Geneva Motor Show and it created quite a stir, at once recognized as one of the more seductive shapes ever rendered in metal, a view with which many today agree still.  The impact it made is undisputed but in industry folklore what is contested is whether Enzo Ferrari (1898-1988), attending the show, called it “the most beautiful car in the world”.  The origin of the tale is a recollection by Norman Dewis (1920–2019) who between 1952-1985 was a Jaguar test driver, the website Hemmings reporting him saying of that moment in Geneva: “I always remember Enzo Ferrari coming up to me.  He walked around the car. He said, ‘Norman, it’s the most beautiful car I’ve ever seen.  But there is one mistake on the car.  It hasn’t got a Ferrari badge.’’

1966 Jaguar E-Type OTS.  The cockpit of the "toggle switch E-Types" was one of the classic looks of the analogue era,  Unlike the Jaguar saloons in production at the time, from the start, the E-Type's dashboard had a padded top-rail.    

Il Commendatore seems never to have confirmed or denied expressing the sentiment and there’s no mention of it in Le mie gioie terribili (published in English as “My terrible joys: the Enzo Ferrari memoirs” (“My Terrible Joys” must be one of the finest titles for a memoir)).  So, in the absence of a denial the story stands and the E-Type clearly made an impression because after concluding the sleek shape was likely to confer great aerodynamic advantage, signor Ferrari returned to Modena and ordered the development of the 250 GTO, the three dozen-odd built now among the highest-priced collectables.  It’s not unknown for a statement of perhaps dubious provenance to gain an aura of authenticity if the subject decides it reflects well on them.  In the 1961 Australian general election, as the counting concluded, the government and opposition had won equal numbers with a single seat still to be called; on that one seat rested the fate of the election.  That one seat was held by the conservative Jim Killen (1925–2007) and ultimately he prevailed, ironically because of the “leakage” of a handful of preferences from the Communist Party candidate.  Elated, Killen told the press he’d received a congratulatory phone call from Robert Menzies (1894–1978; prime-minister of Australia 1939-1941 & 1949-1966) who’d said “Killen, you’re magnificent”.  The quip had come from Killen’s imagination and later, ruefully, he would reveal that at the first post-election meeting of Liberal Party members, Menzies “didn’t even offer me a drink.”  Still, Menzies never disowned the comment and one of his press secretaries confirmed he’d been happy for it circulate.

1961 Jaguar E-Type S1 roadster with toggle switches and aluminum trim panels.

Ergonomically, while an aesthetic delight, the layout was not wholly successful though toggle switches are thought more sexy than the later rockers (although, sardonically, in the E-Type community they are sometimes described a "suicide switches") which were adopted to comply with US safety regulations.  There are two different stamping patterns for the aluminum trim pieces and the one used on the very early cars is much prized; it has never been available as a re-production.  In 1963, as a running change (the factory bulletin indicating it was done to reduce glare), the panel's covering was changed to black vinyl.  The use of aluminum facia plates in a Jaguar was untypical and the designers later recalled it was done just to provide that "race car look" rather as some of today's manufacturers and tuning houses will use carbon fibre (real and fake).  The factory certainly was aware of the significance of the ambiance in cockpit design.  The earlier XK120 (1948-1954) had been available as a FCH (fixed head coupé), DHC (drop head coupé (ie a cabriolet)) and OTS but while the first two received the traditional burl walnut veneer, the "sportier" OTS's facia was covered in leather & leathercloth.  The latter was thought a more modern look which increasingly was used on the successor XK140 (1954-1957) & XK150 (1957-1961) with only the saloons using timber exclusively (which remained an option for the XK150).

Custom timber veneer fittings by Madera Concepts for Jaguar E-type in burl walnut (left) and Carpathian elm (right). 

Unlike the XK150, the timber fittings were never a factory option but some owners found the look irresistible and commissioned specialists to create the pieces.  Although the total area is not large, some disassembly and reassembly is required and with a few curves around which the veneer must be made to curl, it's a job which demands expertise.  The fine craftsmen at Madera Concepts in California report having done sets in both burled walnut and Carpathian elm, the results looking exactly as one imagines the factory might have produced had there ever been a Daimler version of the E-Type.  Of course, however much those commissioning the work might be delighted, the originality police are unlikely much to be impressed.  Views change and by 1985 timber had re-appeared in the cockpit of the E-Type’s nominal replacement (the XJ-S (1975-1996 and in 1991 named XJS during Jaguar's time as subsidiary of Ford) so walnut in the one-off “notchback” Daimler XJ-S prototype was not a novelty.

Erected soft-top on 1969 E-Type S2.

Jaguar devoted time and resources to testing the E-Type but one thing which slipped through the pre-production process (as well what must have been indifference to the glare from the dashboard) was a buffeting the OTS's fabric soft-top suffered at certain speeds.  It seems an obvious thing not to notice but, like the HST's (Hubble Space Telescope) mis-shaped mirror, it was just one of those things.  With the E-Type's release date locked-in, it was too late to redesign the components and it was a hint at the machine's intrinsic unsuitability for mass-production.  The factory had not expected demand to exist in anything close to what instantly emerged (they'd expected to sell at most a few thousand but not some 72,000 over 14 years; the world was however seduced and to this day the E-Type remains the definitive Jaguar).  The consensus among the cognoscenti seems to be if Jaguar had anticipated what a huge seller the E-Type would become they might have (1) devoted a few more months to the development and (2) on the production line spent maybe another £40 per car, meaning many of the E-Type's inherent problems might have been solved and adding £40 to the price would likely not much have affected demand.    

The fix.

Jaguar's Q&D (quick and dirty) solution for the buffeting was to weigh-down the affected area with a chain of lead-shot, sewed into the fabric in effectively the same way weighted hems are used in fashion.  Just over a half inch (14 mm) in diameter, the lead-shot bag was wrapped in a sisal cord with two 12 inch (300 mm) draw-cords to permit it easily to be pulled through the pocket in the top.  It was such a rush-job Jaguar never allocated a part-number and it’s only ever been part of hood cloth assembly (#BD20582 for the Series 1; 159.854 for the Series 2).  Both the S1 (1961-1968) and S2 (1968-1971) E-Types had the lead-shot bag, even though the soft-top’s frame was re-designed for the later cars (the S1 with three bows, the S2 two and the clamps securing the mechanism to the windscreen header rail were strengthened) and for the S2, the size of the shot-bag was reduced slightly to accommodate a change in placement, now beneath the centre strap between the bows.  Interestingly, despite presumably having at least slightly different aerodynamic properties, there seems to have been no difference in the buffeting suffered by the early cars with mohair fabric and the later which used Everflex (a tough, high quality synthetic used by Rolls-Royce during it's unfortunate "vinyl roof phase" in the 1970s (Rolls-Royce never used the word "vinyl", always insisting it was "an Evereflex covering").  For the S3 E-Type (1971-1974), the soft-top was again re-designed, this time in a way which rendered the lead-shot chains unnecessary.  

 

On the E-Type, the toggle switches were fitted only to the S1 & S1.25 cars built between 1961-1967 and they're admired both for the "vintage" appearance and their delightful tactility, the centrally-located array controlling functions such as lighting and the windscreen wipers.  Even by the slight standards of 1960s ergonomics the arrangement wasn’t ideal but, sitting beneath the gauges, it was an elegant and impressive layout the factory would retain for more than a decade, the E-type using the arrangement until production ended in 1974 and it endured on the low-volume Daimler DS420 limousine until 1992.  However, while the layout for a while survived, the toggle switches did not, the hard-edged protuberances deemed dangerous by the US NHSB (National Highway Safety Bureau (which in 1970 became the NHTSA (National Highway Traffic Safety Administration) under the newly created DOT (Department of Transportation), established by an act of Congress on 15 October, 1966 and beginning operation on 1 April, 1967) which, since the publication of Ralph Nader’s (b 1934) book Unsafe at any Speed (1965) had begun to write legislation which stipulated standards for automobile safety, this in parallel with the growing body of law designed to reduce toxic exhaust emissions.  The world into which the E-Type had been born was in its twilight.

1973 Jaguar E-Type S3 roadster with rocker switches.

On the later roadsters, the far-right rocker switch was un-labeled because it was functional only on the coupés, activating the rear-window demister; on the XJ sedans (which used the same switch apparatus), it swapped the flow between the dual gas (petrol) tanks.  When the S2 XJ was released in 1973, the whole dashboard was revised, greatly improving the ergonomics but lacking the visual appeal of a look dating from 1959 when the Mark II saloon (1959-1969) was released although the most extravagant implemental was on the Mark X (1961-1966) which used a full width assembly in timber veneer.  While impressive, airbags were decades away from mass use and seatbelts were uncommon so when the model was revised and released as the 420G (1966-1970), the top rail received a padded vinyl covering (with a central clock).  It didn't look as good but may have reduced the severity of a few head injuries.

In 1968, the new wave of legislation came mostly from the DOT so applied almost exclusively to vehicles sold in the US but such was the importance of that market it made little sense for Jaguar to continue to produce a separate line with toggle switches for sale in the rest of the word (RoW) so the decision was taken to standardize on the flatter rocker switches with their safer, rounded edges.  At much the same time, other changes were made to ensure the E-Type on sale in 1968 would conform also to other new rules, the most obvious being the replacement of the lovely covered headlights, replaced by units in a scalloped housing, mounted slightly higher (there was also a minimum headlight-height stipulation).  Given the extent of change, it was decided to designate the updated cars as the S2 (Series 2).  Despite the perceptions of some (fuelled by internet posts and re-posts), by 1967, Jaguar, while not a mass-production operation along the lines of a computerized Detroit assembly line, had long since ceased to be a cottage industry and as a change was made in a model’s specification, except for specified batches, it was applied to all production after a certain date.  Although the factory’s records document this, urban myths continue to circulate, stimulated by so-called “unicorns” such as the handful of 3.8 litre Mark 2 saloons built after 1967 when the line was rationalized (as the 240 & 340) and restricted to the 2.4 & 3.4 litre XK-Six; those 3.8s were official “special orders” and not ad-hoc aberrations.  However, nothing in the era has resulted in as much misinformation as the specification of what came (unofficially) to be called the S1.25 & S1.5 E-Types, the most common myth being that before S2 production began, some cars left the factory with a sometimes unpredictable mix of S1 & S2 parts, this haphazardness accounted for by the expedient of “using up stock”.  In the industry, (even in computerized Detroit) the practice was not unknown but there’s no evidence of the practice among 1967 E-Types.  What seems especially to attract speculation is the phenomenon of “overlap”, a word describing a Jaguar found to include some “later” or “earlier” features than the build date and VIN (vehicle identification number) suggest should be fitted.  It's part of the charm of the breed and was usually the result of the recorded “build date” reflecting when a car passed the final quality control checks; apparent discrepancies did happen if a car with an earlier chassis number had been returned for rectification of some fault, thus picking up what appears to be an “out-of-sequence” date.

1967 Jaguar E-Type S1 OTS (left) and 1976 Jensen Interceptor III (J Series) Convertible (right).

With the end of E-Type production, no Jaguar subsequently used the classic dashboard layout although it did endure on the Daimler DS40 limousine, built on the platform of the old Mark X.  Although over 4,000 DS420s (including two built by Vanden Plas as landaulets) were built (plus an additional 900-odd supplied as “commercial chassis” to coachbuilders who would fabricate custom aft-sections, configured mostly as hearses), the model was never sold in the US, the costs of the engineering required to make it compliant with the NHTSA’s ever-evolving rules to high to make the low-volume model viable.  Jensen however adopted the layout for the Interceptor (1966-1976) when in 1969 the Mark II was released although it too was compelled to replace the toggle switches with rockers and they went above and beyond the regulator’s dictates, installing them in a recessed, padded housing.  Even on the Interceptor Mark III (1971-1976), although there were a number of detail changes to the dashboard over the life of the model (there were “G”, “H” & ”J” series, “I” skipped to avoid confusion with the numeric “1” (one), a convention followed by many including bra manufacturers and Boeing when updating the B-52H Stratofortress), the Jaguaresque layout (an array of gauges in the centre with a line of toggles below) remained to the end.  Again, the ergonomics were not state of the art but, like the Jaguars, the Interceptor had other charms.

2006 Spyker C8 Laviolette Widebody: Dashboard layout with four-spoke “propeller” steering wheel (left) and toggle switches with nerf-bars (right).

Pleasingly, although thought extinct on the road, the toggle switches did make a comeback with several small-scale manufacturers unable to resist the look.  The way that look was kept while remaining compliant with the rules was to add rounded nerf-bars on each side of the switch, a trick borrowed from racing cars where the fittings were used to ensure a driver didn’t inadvertently “flick to wrong one”, always a risk because of the thick gloves usually worn in competition.  Spyker, a boutique operation from the Netherlands, began operation in 1999, the name coming from a Dutch coach-builder that between 1880-1926 would branch out from horse-drawn carriages to automobiles and even aircraft.  Since 2000, between various local difficulties (including bouts of bankruptcy), Spyker has produced a number of high-performance models and while the mechanical specification has always been impressive, what has also drawn attention are the exquisitely finished interiors, the intricacies (typified by the nerf-bars around the toggle switches) a delight for those who fetishize such things.  Unfortunately the four-spoke “propeller” steering wheel (a style last seen in volume on the Jaguar XK150 (1957-1961) was eventually judged just too potentially lethal to be granted an exemption from compliance and was replaced with something more accommodating from the Lamborghini parts-bin.

Engineering as art: Gear-shift mechanism, 2006 Spyker C8 Laviolette Widebody (left) and 2007 Spyker C8 Laviolette Targa with, softer, gentler steering wheel (right).

What did however survive was the wonderfully crafted shift mechanism for the rear-mounted ZF transaxle and although the exposed shafts of stainless steel might seem an affectation, it's pure functionalism; being a direct mechanical linkage, they provide precise gear-shifting, always a challenge with such a layout (the Porsche 914 (1969-1976) community coined “broomstick in a jar of mayonnaise” to describe the experience of the earlier "tail-shift" models, the post 1972 "side-shift" build a great improvement from "bad" the "satisfactory").  The shape of the shifter’s knob reflects the modern practice, dating from analysed data derived in the late 1960s from the Swedish government's mandatory post mortems (autopsies) of road-accident fatalities (under Swedish law, such corpses were for 48 hours the property of the state).  What the pathologists' findings revealed was lives could be saved if engineers could devise as a shift lever handle too large to penetrate the eye socket.  One of the first knobs to reflect this design imperative appeared in 1971 on the Mercedes-Benz 350 SL (R107, 1971-1989) although, there being an element of the macabre in the research, the origin of the shape wasn't something the factory choose widely to publicize.  The small innovation was a classic example of what's called “passive safety”.  Spyker’s engineering is thorough and although pure-steel from transaxle to knob, heat-soak along the shaft is said to be minor so there was no need to resort to a timber knob as Porsche did in the late 1960s on some of its race cars; to this day the urban myth persists that Porsche used balsawood to reduce weight by a few grams.  

The pure lines of the S1 E-Type (top) were diluted, front and rear, by the need to comply with US safety legislation, the later S2's head & taillights more clunky.  The collector market slang for the later headlight treatment is "sugar scoop".

The process by which S1 evolved into S2 was in a sense transitional which is why the designations S1.25 & S1.5 became accepted in the jargon.  Not used by the factory, the terms are said to have been “invented” by JCNA (Jaguar Clubs of North America), the S1.25 run beginning on 11 January 1967 after production resumed following the Christmas holiday while the first 1.5s were built mid-year.  Although within the collector community much is made of the defining differences between the “pure” S1 and the “transitional” S1.25 & S1.5, that “purity” is nuanced because like many others, the E-Type was subject to constant product development with changes appearing from time to time and "S1" is a concept rather than a static specification.  Early in the model run, there were some obvious changes such as (1) the modification to the “flat floors” to provide more leg-room, (2) the integration of the hood (bonnet) louvers into the pressing, (3) the external hood (really a “clamshell”) release (there were two types) being replaced by an internal mechanism, (4) internal trim changes including the dashboard materials, console and seats, (5) the replacement of the Moss gearbox with an all-synchromesh unit and (6) the 4.2 litre engine replacing the original 3.8.  Beyond those well-known landmarks, between 1965 and early 1967 there was also a wealth of barely detectable (except to experts of which there are quite a few) cosmetic changes and mechanical updates including: (1) the glass windshield washer bottle being replaced by a plastic container (March 1965), (2) the addition of an alternator shield (October 1965), (3) an enclosed brake and clutch pedal box (October 1965), (4) a hazard warning (4-way) flasher included for US market cars (November 1965), (5) sun-visors added to the OTS (February 1966), (6) instrument lighting changed from blue to green (March 1966), (7) the rubber boot at the base of the gear lever being replaced by a black Ambla gaiter (October 1966), (8) detail changes to the gearbox cover and prop shift tunnel finisher (October 1966), (9) the material used for the under-dash panels switched from Rexine-skinned aluminum to fiberboard (October 1966) and (10) a Girling clutch master cylinder replaced the Dunlop unit (December 1966).  One quirky part of the evolution was that although, from their introduction in 1966, the 2+2 cars included a door for the glove-box, one wasn't fitted to the OTS & FHC until  the S1.5 run.

Jaguar E-Type: S1 with covered headlight (left), S1.25 with early "sugar scoop" (centre) and S2 with later "sugar scoop" (right). 

After the lovely headlight covers were legislated to extinction by the DOT bureaucrats, the replacement (uncovered) apparatus came to be called the “sugar scoop”, a term earlier used for the Volkswagens & Porsches sold in the NA market which had to be fitted with sealed-beam headlights because of protectionist rules designed for the benefit of US manufacturers.  The use of “sugar scoop” for the E-Type was appropriate because the visual link with the utensil was much more obvious than on the Volkswagens & Porsches.  There were three different designs of sugar scoops, one for the 1.25 & 1.5, one for the S2 and one for the S3.

Straight six by Emily Abay (b 1986).

UUA 368 is an Australian-registered 1968 (S2) Jaguar E-Type available for hire at a daily rate of Aus$990.00 (including 200 km (124 miles)); the hire company dubbed her (the car) "Penelope" (unfortunately, the company does not expand on how the names were chosen).  Not all jurisdictions allow the registration plate to be painted on the hood, a practice made famous in 1961 by photographs of 9600 HP, a pre-production E-Type used as one of the factory’s original press-cars.  It was 9600 HP which The Autocar magazine took to Belgium, successfully verifying the then astonishing claim of a top speed of 150 mph (241 km/h) although, years later, it was revealed there had been a few subtle tweaks and an E-Type off the showroom floor wouldn’t quite have hit the magic number, no matter how long and straight the road.  Painting the registration on the hood avoided disfiguring the lovely lines with a plate (no flat surfaces on the front of an E-Type) and many followed the lead, some places allowing it, some not.  A S2 E-Type, UUA 368 has the one of the more elevated of the sugar scoops but, being delivered in Australia, it retains the triple SU carburettors by then denied to customers in NA so response will be lively, especially above 100 mph (160 km/h).

A US market 1977 Porsche 911 (1964-1989), fitted with the front bumper assembly of a later 911 (964 (1989-1994)):  The original “sugar scoops” are seen on the left and the replacement Hella H4 lights are to the right (in RoW cars both H2 & H4 units were fitted).  The (non-figurative) sugar scoop (centre) is Japanese, circa 1970s.  Sugar scoops are used to scoop sugar from a “sugar scuttle” whereas if one’s sugar is in a “sugar bowl”, a “sugar spoon” is used.  The difference between a “sugar spoon” and a “tea spoon” is the former has a deeper and usually more rounded bowl and most are supplied as part of a “tea set” or “tea service”, often with the same decorative elements.

1966 Jaguar E-Type FHC: undeniably, the headlight covers were a sexy shape.

Despite that myriad of modifications, all E-Types prior to the S2 are S1s but the running changes can be of significance to restorers if the object is exactly to emulate the state in which a vehicle rolled off the production line; in events such as a concours d'élegancé, judges can deduct points for even minor infractions.  Things became more distinct when on 11 January 1967 the first E-Type destined for the US market was built without the covered headlights and this marked the beginning of the run of what would come to be known as the 1.25 although it wouldn’t be until mid-year the open headlights became a universal fitting.  Unlike some cars where changes can be determined from the sequential VINs, the only way accurately to determine whether a 1967 E-Type built between January and July was fitted with covered or uncovered headlights work out the market for which it was built, those for NA using the uncovered fittings.  That's because an analysis of successive VINs will reveal on a given day there might have been a mix of cars going down the production line with different headlight assemblies.  Curiously, there were some 1968 E-Types built for Canada which included the triple SUs and while these included the interior changes mandated by US federal law, the door mirror on the driver’s side wasn't fitted and the tail and side lights were a different specification.  From 1969, Canada aligned its regulations with those of the US so from that point on, the NA specification was standardized but the history of S1 production does illustrate why things be so challenging for restorers wishing exactly to replicate what the factory did.

Between August-October 1967, the 1.5 run was built with twin Zenith-Stromberg carburetors (in a specification designed to reduce emissions) replacing the triple SUs (on NA cars), the substitution of ribbed camshaft covers, a higher mounting of the headlights (to meet minimum height requirements) and the adoption of rocker switches; at this point, the teardrop tail lights remained, the other most obvious external marker of the S2 being the chunky lights below the rear bumper bar.  In the usual manner, updates continued, such as twin cooling fans (a good idea) and 1000-odd run of the so-called "R2" cars, almost all of which were registered as 1971 models although many left the factory in 1970.  The R2 S2 E-Types gained a pair of "leaper" badges on the flanks, just behind the front wheel arches.  Unlike the steel leapers centrally mounted on the hoods of other models, the badges required two part numbers, one each for the left & right.  It seemed a pointless addition and just an addition of more clutter, as they were on the S1 (1968-1973) & S2 (1973-1979) XJs.

1971 S2 Jaguar E-Type (centre) from the "R2" run of 1000-odd with the leaper badges on the flanks.

So much did the clutter created by bigger bumpers, protuberant headlight assemblies, badges and side-marker lights detract from the lovely, sleek lines of the Series 1 cars, bolting a luggage rack to the trunk (boot) probably seemed no longer the disfigurement it would once have been.  The left-hand (left) and right-hand (right) badges, being directional, were different part numbers (BD35865 & BD35866 respectively) and those used on E-Types were silver on black.  There were also variants used on the XJs which were gold on black and some had the leaping feline at a slight slope, both matters of note for those wishing to restore to the exacting "factory original" standard.  

So, without a flow chart, it can be hard to follow and, because of some overlaps in the production process, the S1-to-S1.25-to-S1.5 transition wasn’t entirely lineal but none of this is mysterious because the JFSBs have documented and explained these “inconsistencies”.  Still, there are enough quirks to enrage some and delight others.  For example, there were a certain 32 specific NA market vehicles fitted with the headlight covers which were built with serial numbers later than the first of the open headlight cars.  Not all E-Types built for NA in 1967 thus had the open headlights and a not insignificant number of those 1.25 spec vehicles have been retro-fitted with the covers.  Such is the appeal of the covered headlights that although the E-Type market is monitored by the originality police (the “matching numbers” crowd with their extraordinary knowledge of things like “correct” hose clamps or screw heads), there is some untypical forgiveness for “back-dating” headlights to the sleeker look and they're not unknown even on the later, and much different, S3 cars.  Also, although US market S2 cars were from very early in the build fitted with the side-marker light assemblies, it wasn't until late in 1969 bulbs and wiring were fitted (the relevant law taking effect on 1 January 1970); prior to that they'd functioned merely as “side-reflectors”, meaning latter day purchasers need to inspect non-illuminating examples to work out if they're defective or just reflectors.  Opinion seems divided on the matter of fitting the triple SU carburetor assembly to cars delivered with the twin Zenith-Strombergs and many have been converted.  It's not difficult to make a 1.25 visually indistinguishable from a S1 and to do the same to a 1.5 is a matter just of more parts, time and money, the ethics of both ventures being transparency; once modifications are disclosed to a potential purchaser, it's up to them to decide if originality is critical.  Armed with lists of VINs, JFSBs and encyclopaedic knowledge, the JCNA's originality police will not be fooled. 

The lure of the headlight covers: 1973 E-Type S3 with headlight covers subsequently added (left) and with the standard "sugar scoops" (left).

These are US market cars with the additional "dagmars" appended to the bumperettes.  Even by 1973, thin whitewall tyres were still a popular option on US Jaguars and they remained available until the last were sold in 1975 but the wide whitewalls often supplied in the early 1960s had long fallen from favor.  Although the judges in the JCNA confederation are usually uncompromising, they make a rare exception in not deducting points from late-build E-Types (the so-called 1.25 & 1.5) which have been fitted with the headlight covers.  The covers never appeared on the S3 E-Types but their unexpected presence clearly doesn't dissuade buyers because the S3 pictured above (left) in February, 2021 sold at auction for US$230,000.  It was an exceptionally low-mileage example (8000-odd miles (13,000 km)) but even given that it represented an impressive premium for what was a "modified" vehicle.  The S3 cars also had a number of year-to-year variations but compared with the constantly evolving S1 the specification tended to the static.  One quirk was that as well as offering the new 5.3 litre (326 cubic inch) V12, it had been intended also to make available a version with the 4.2 litre XK-Six with brochures and promotional materials printed before the decision was taken only to fit the V12.  However, four six cylinder pre-production prototypes were built and one is known to survive; curiously, despite the rarity (indeed, it may genuinely be a unique, historic E-Type footnote), at auction it achieved a price little different from a 1971 V12 model in equivalent condition.

Jaguar E-Type production breakdown, 1961-1974.  

While the loss of the toggle switches, teardrop taillights and headlight covers caused many to lament that the world was shifting from elegance ungainliness, some other changes also induced pangs of regret.  The switch from triple to dual carburetors was necessitated by the emission control regulations; the claimed HP (horsepower) dropped from 265 to 246 and while not many took the original rating too seriously, there was a drop in performance, especially in the upper speed ranges.  One often less noticed change mandated by the DOT was the replacement of the “eared” knock-off hubs for the wire wheels (the E-Types only ever using a two-eared version although third-party items with three ears are available) with a more “pedestrian friendly” type which, bewilderingly, are now referred to as the “non-eared”, “curly”, “octagonal”, “smooth”, “federal” “safety” and “continental” knock offs.  Take your pick.  Buyers could also take their pick of whether their “improved” wire wheels (now incorporating a forged centre hub) were painted in matte silver or chromed although the JFSB did caution that because of the altered configuration of the spokes, the wheels were not interchangeable with the earlier type except as a complete set (ie five per car).  Available from 1 January, 1968 (the effective date for many of DOT’s new rules), this was Jaguar’s last update of the wire wheels which, in a variety of forms, the company had been using since being founded in 1922 as the Swallow Sidecar Company.  Never offered on the biggest and heaviest of the post-war cars (the Mark VII, VIII, IX and X/420G) or the new XJ range, they were last used on the “overlap” Daimler saloons (250 & Sovereign) in 1969 although they remained an option for the E-Type until the last was built in 1974.  

Wire wheels and associated components for the E-Type by Martin Robey; note the two designs of spinner saver (eared & non-eared).

Although a handful of small-scale producers (the last hold-outs from the days of cottage industries) continued to offer wire wheels, their final appearance on the option lists of the UK industry’s volume models came in 1980 when the last of MG's Midgets and MGBs were sold.  The term "knock-off" sometimes confuses because in slang it can mean a "fake or reproduction item" but in the context of wheels the original meaning described the centre-locking hubs (known also as "spinners") which were tightened or loosened by being "knocked" on the ears with the (often lead-faced) mallet (sometimes described as a hammer) included in the tool kit.  In racing, pit crews would strike the ears directly but tool-kits usually included a (typically timber) "spinner saver" to minimise damage to both hub and mallet; when non-eared hubs appeared, the shape of the spinner saver was also changed.  So the term can confuse: The famous Italian manufacturer Borrani produced many wheels with centre-lock hubs so the phrase "Borrani knock-offs" is standard industry jargon and by convention "knock off Borranis" is used of replica locking nuts (also called "spinners"), the presence of which can be a concern because they might be of lower quality, not manufactured to the safety and performance standards of the genuine product.  

Norway’s Motorhistorisk Klubb Drammen (Historic Car Club of Drammen) from Buskerud county reported on an exhibition hosted on 2 July, 2014 by the Norsk motorhistorisk museu (Norwegian Motor Historic Museum) in the village of Brund, the event honoring Lindsay Lohan’s (b 1986) 28^th birthday.  The red S2 Jaguar E-Type had received a recent restoration but a detailed examination would have to be undertaken to determine the degree to which it remains in its original specification.  Given the visible clues and its presence in Norway, this may have been a RoW (which the triple SU carburetors would suggest though they are a popular swap on twin-carb models) car but there’s a lively two-way trans-Atlantic trade in E-Types (many now expertly restored in Poland) so it may originally have been sold in the US or Canada.

The “Shaguar” used in the three Austin Powers movies (1997, 1999 & 2002).

The Shaguar was a 1967 S1.5 E-Type which featured the combination of teardrop taillights, twin carburetors, sugar scoop headlights, a glove-box door, rocker switches and, being right-hand drive (RHD), it wasn't built for NA.  When the auction house published the photographs, the vibrant on-line originality police did their analysis and concluded it was built in December 1967 as a 1968 model but was in far from original condition (beyond the obvious paint and Shaguar badge).  The dashboard included the earlier manual choke and the heater and vent controls appeared to be missing and while the side & turn lights were NA specification, the taillights were those used on RoW cars.  The tachometer was the one one fitted to S2 models and it was suspected this may have been swapped when the later, non-original engine with the twin Zenith-Stromberg carburetors was installed.  Over the decades, many E-Types have for one reason and another drifted far from their original build and usually this limits their appeal to collectors but at Mecum Auctions in January 2025, the Shaguar realized US$880,000 (including 10% buyers premium), several times the typical sale price of a non-original S1.5 RoW E-Type in the same condition, its history as a cinema prop clearly an attraction.