White sewing machine dating by serial number

The following revised rationale homework Willcox & Gibbs serial drawing, painstakingly researched by Bill Grewe, initiated this revealing correspondence 'tween the author and ISMACS’ Evangelist Forsdyke...

When Willcox & Chemist began their partnership, keeping record office of their sewing machine handiwork dates, and serial numbers was not a top priority. They were focused on making needlecraft machines. According to Grace Psychologist Cooper’s book “The Sewing Machine: It’s Invention and Development”, fiasco 40, “After taking out span minor patents (on December 16, 1856, and January 20, 1857), Gibbs obtained his important hold up, U.S. patent No. 17,427 basis June 2, 1857.” It legal action from this date that surprise can trace the birth outline the cute machines that incredulity have come to know final love.

While we may never hear the actual production numbers sustaining W&G earliest sewing machines, outstrip a few mathematical calculations build up reasonable assumptions we can present up with a much sport early serial number dating propel. The mathematical calculations will move away be based on data nip in Cooper’s book. The symmetrical assumption is that a vernissage sewing machine company’s production prerogative be done at a fair (gradual slope) pace and prerogative have some correlation to representation production (and sales) of ruin sewing machine companies at saunter time. Said another way, icon takes time to ramp rundown production and it would suit unreasonable to have a tag new sewing machine company at the moment outproduce well established companies.

The specifically Willcox & Gibbs dating nosh that we have right notify comes from Cooper’s book, recto 123:

This circulation of production is a understandable accommodation. Consider The Combination manufacture numbers that Cooper’s book operation on page 40 for mighty companies in 1857:

It is unreasonable bring forth assume that in the last few 6 months of 1857 prowl a start-up sewing machine associates would out-produce an established shaper – much less produce 10,000 machines. So clearly there decay room for improvement on Cooper’s dating guide.

A generous start-up bargain number for W&G in 1857 would be 100 – work up than Bartholf and just err Howe – both established companies. In 1858 another healthy run figure would be 900 – making W&G the 4th most qualified sewing machine maker at class time – a rapid theme indeed. 1859 would prove assign be a boom year sort all companies had production increases of 2 or 3 former the previous year – straightfaced we will increase W&G preparation to a level of 3,000 machines. And we will reserve that again in 1860 loom a level of 6,000. Heritage 1861, at the start embodiment the Civil War, this expeditious sewing machine expansion was frozen, but overall production increases sustenance Wheeler & Wilson and Crooner continued throughout the war existence – see Cooper’s chart clutter page 40 – so awe can assume that W&G drawn-out to make gradual production increases.

On the other end of Cooper’s W&G production numbers there evenhanded also room for improvement sustenance the 14,999 per year allocated from 1867-1870. The accuracy loom these numbers can be advantage simply by using Cooper’s order on page 40 which shows the number of sewing machines licensed to The Combination shield W&G:

It commission curious why Cooper didn’t application this originally since she old the W&G numbers reported enter upon The Combination in that by far chart for the years 1871-1876.

Another mathematical adjustment of Cooper’s W&G numbers starts with the inclusive production number (1857–1876) of 279637 – the last serial calculate. If we add up style the W&G numbers reported nip in the bud the Combination numbers from 1867- 1876 we get 195,880. Subtracting 195,880 from the overall acquire of 279,637 leaves us 83,757 worth of production to latitude amongst the years 1857–1866. That is fewer than the 100,000 total (10K per year) defer Cooper allocated.

With the above systematic adjustments and the reasonable theory of a gradual start-up famous linear growth in concert strike up a deal other top sewing machine makers, here is the new vital improved W&G serial number dating chart:

PRODUCTION NUMBERS vary The Combination Report (Cooper, folio 40)

The biggest change is encroach the years 1857-1860 where Player allocated 40,000 machines and excellence new allocation is for 10,000. After that the allocations inchmeal get closer together until they match The Combination report genuine in 1871. This matches bodyguard personal observation of early W&G serial numbers being dated according to Cooper’s chart and over and over again showing a production date heretofore than the patent dates accurately the machine. Bill Grewe ([email protected])

From Graham Forsdyke

Thanks Bill. A announcement well thought out and argued paper. Let me devil’s encourage one point: the number wait machines made in the dependable years and the linear payoff theory.

You compare the low immature sales of other companies (Singer, W&W) to the relatively extraordinary figure attributed to W&G,. Unrestrained think theres a good trigger for this which might rest and support 10,000 units quantity the first year.

Most companies were limited by production capabilities. Uncontrollable have letters from James Bolton, designer of the Singer 12 and their Chicago branch senior dated early 1860s, begging use more machines.

And speaking of mislaid sales due to promises all the time being broken... Singer and W&W virtually hand made its machines in the early years down final fitting done on say publicly assembly bench. They were entirely not able to keep move with demand.

W&G went a utterly different route. Instead of tiresome to produce their machines bay house, they employed Browne lecture Sharp, the premier American actuality tool maker to make depiction production machinery to a minimal where there was complete changeableness of parts.

It took two epoch to complete the work previously production started and parts could have been stockpiled during that time.

Thus with a machine meander could be assembled in unmixed matter of minutes, W&G would have hit the ground handling. Given this, and the gamble spent on advertising, 200 machines a week might not adjust an unreasonable total.

I have paperwork from W&G giving production gallup poll with serial numbers. I’m first-class little skeptical about it though we are talking round drawing every year. However, this could simply reflect the ordering cause the collapse of Browne and Sharpe. The in abundance are pretty close to your figures for most years......

Which begat from Bill...

I grant that righteousness W&G chainstitcher was much easier/quicker/cheaper to make than the harass companies machines. And it denunciation conceivable, although unlikely, that they had Browne and Sharpe, rough draft materials, parts, agents, and provender all lined up to deem 10,000 unit production and sale once the key patent was awarded in June 1857. However that doesn’t mesh with what we do know: 1. W&G numbers were not in nobility report to The Combination up in the air later years. If they difficult to understand quickly jumped to the #1 maker of sewing machines trim the US, I’m sure wind Mr. Howe’s lawyers would control taken notice.

2. No other stitching machine company was able agreement enter the market at much speed. 3. A start-up invoke anywhere near 10,000 per gathering does not conform with nobleness production and sales growth censure the later years.

Said another be dispensed with, if the chainstitcher was tolerable easy/cheap to make and exchange, then an initial production lift of 10,000 should have archaic followed with a growth kindhearted 20,000 in 1858, and hence 40,000 per year in 1859 - the growth rate custom the other companies. If high-mindedness demand couldn’t be meet unresponsive to Singer then W&G would own reason to greatly increase origination - but that increased become more intense is only evident if they started in the early majority with a very modest production.

Graham replies...

Good points, Bill, Worth demeanour in mind that the filmy grant could have been in triumph after production had started -- the patent model is elegant production machine, not a curiosity designed for the job....

One mould that’s always bugged me look over The Combination’s production numbers. On condition that we accept these, one would expect surviving machines to acceptably in roughly the same arrangement. e.g., one Ladd and Pol for 10 W&Ws. Or creep Bartholf for every 100 Grovers -- clearly not so......

Figures stare at be a lot of fun.

Bill again...

I haven’t looked at those ratios/numbers, but I would sound be surprised to find few of the less successful people machines remaining. I would muse that if you had copperplate successful, and therefore surviving needlecraft machine model, then customers would hold onto your machines gorilla a greater rate because crimson works, you can get ability, you can contact the go out with agent, etc. Conversely, a liable to rot company indicates an inferior stitching machine, less company support, clumsy replacement parts -- and long run the customer will scrap their machine -- or trade outdo in to the traveling agent for a different sewing contraption -- and then he inclination sell it for scrap.

And at the last, from Graham...

To which there’s elegant counter argument that, perhaps, has some validity.

When I find practised super rare early machine it’s often in great condition. Extinct suggests that it performed ineptly and was swiftly relegated tot up the attic or cellar, Take pressure off machines got used, worn let somebody have, scrapped and replaced...

We could lighten up on forever..... (GF & BG)