Watch fusee cutting engine. — view 1 of 4
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Pocket Watches · Fusee engine

Watch fusee cutting engine.

DocumentedDocumented from the holding institution's catalogue record.
Maker / attribution
Unrecorded in source
Date
1750-1800
Country of origin
Unrecorded in source
Place
Unknown place, Unattributed place
Object type
Fusee engine
Holding institution
Science Museum Group, London
Accession / object no.
1963-120
Credit line
Topham, V.

View the source record ↗

Record summary

Held and catalogued by Science Museum Group, London (object number 1963-120), this is a fusee engine, made in Unknown place, Unattributed place, dated 1750-1800. The Atlas places it in the Precision & Scientific Horology period (1750 – 1850) of its Pocket Watches collection. The record is illustrated with 4 photographs.

Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.

Catalogue description

Science Museum Group description

This machine tool for cutting fusees is of a type used in the second half of the eighteenth century. It resembles the fusee engine illustrated in Ford, Whitmore, & Brunton's catalogue of c.1775. The engine is intended to be mounted in a vice, and when the handle (not original) is turned, it drives through pinions the chuck holding the fusee blank. At the same time a threaded block travels along the screw cut on the shaft and turns a lever pivoted at the front of the frame. The movement of the lever makes the table carrying the cutting tool traverse at a rate which depends on the position of its point of attachment to the table, which is adjustable.

Historical context

Precision & Scientific Horology (1750 – 1850)

Harrison solves longitude; Mudge invents the lever; Breguet's Paris workshop defines the modern watch.

From 1750 to 1850 the watch became a precision instrument. Mudge's lever escapement, the cylinder escapement, Lépine's thin bar calibre, Breguet's innovations (overcoil, tourbillon, perpétuelle) and the pocket chronometer of Arnold and Earnshaw all date from this period, while verge watches remained common in cheaper production.

Read the period in the timelineMore pocket watches from this periodEarlier: Early Modern Horology

Atlas type guide

Pocket watches

The pocket watch was the dominant personal timekeeper from the late seventeenth century until the First World War. Its development tracks the history of the escapement: verge watches with fusees until the late eighteenth century; Thomas Mudge's lever escapement (c. 1755) and the cylinder escapement popularised by George Graham and later by Swiss makers; and the Swiss and English lever watches of the nineteenth century. Lépine's bar-bridge calibre and keyless winding made watches thinner and easier to use.

Industrialisation transformed the trade: American factories such as Waltham (from 1850) and Elgin produced interchangeable parts by machine, and Swiss makers responded with their own mechanisation after the 1876 Philadelphia Exhibition. By 1900 a reliable watch was affordable to millions; the finest makers continued to produce complications and precision watches.

What to look for

  • The escapement: verge (crown wheel), cylinder, duplex, English or Swiss lever.
  • Key winding (a square arbor in dial or back) or keyless crown winding.
  • Signatures and serial numbers on the movement, dial and inside case back.
  • Hallmarks, case maker's marks and gold or silver standards stamped in the case.
  • Dial material: enamel, silver, gold, later printed metal.

Dating clues

  • Verge watches dominate before c. 1800; cylinder watches c. 1770–1900; lever watches after c. 1820.
  • Keyless winding: increasingly common after c. 1860.
  • Manufacturer serial number lists exist for Waltham, Elgin, Longines, Omega, Patek Philippe and others.

General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.

Read next:Verge escapementIdentification Centre

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