Watchmaker's Gear Wheel Rounding Up Tool
Record status
Individual type · partial
Period
circa 1890
This late 19th-century watchmaker's rounding-up machine (machine à arrondir) is designed for truing watch wheels, adjusting tooth form, and altering tooth depth.
Fabricated from brass and steel, the apparatus is equipped with a large curved-spoke driving wheel rotated by a hand crank with a dark handle, linked by a drive band to the upper spindle assembly. The tool is mounted atop an elevated brass pedestal fixed to a rectangular walnut plinth. The base contains a pull-out frontal drawer fitted with rows of dedicated brass collets and accessories.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Watchmaker's tools & bench
- Materials
- Brass, steel, and walnut
- Machine Type
- Machine à arrondir / gear wheel rounding up machine
- Stated Origin
- Continental origin, probably Switzerland or France; listed as France
- Place recorded
- France
- Base Dimensions
- 26 cm x 16 cm x 6 cm
- Date of Manufacture
- circa 1890
- Driving Wheel Diameter
- 18 cm
Design
- Visible features
- • Large curved-spoke brass drive wheel operated by a hand crank with a dark grip • Drive band connects the main driving wheel to the upper arbor pulley • Base drawer is pulled open displaying an array of turned brass collets and cutters arranged in rows • Turned brass pedestal base secured by screws to a rectangular wooden plinth
- Construction and Materials
- The machine is composed of brass and steel and is mounted on a polished walnut base. It features a large driving wheel with a diameter of 18 cm, operated by a hand crank. The base includes a drawer which contains an array of accessories, though the listing notes that two accessories are missing.
- Object Identity and Function
- This apparatus is described as a gear wheel rounding-up machine (machine à arrondir) for watchmakers. It is designed for truing watch wheels and shaping gear teeth. The seller states that the hand-operated machine has been disassembled, cleaned, and polished.
- Provenance and Documentation
- The item is stated to be of Continental origin, with the seller suggesting it is probably from Switzerland or France; France is listed as the place of origin in the provided metadata. The apparatus is dated to the late 19th century, specifically cited as circa 1890.
Identification
- Reference
- A474
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: Seller notes the origin is Continental, probably Switzerland or France, with France selected in metadata fields
- Research required: The listing indicates accessories are present in the drawer but notes two are missing
- Research required: Seller notes the machine was disassembled, cleaned, and polished