Bar movement with Geneva lever escapement no. 16670
Record status
Individual type · partial
Period
1801-1900
This nineteenth-century Swiss bar movement features a Geneva lever escapement and is preserved in the Science Museum Group collection under object number 1916-287.
Described by the source as incomplete, it was donated to the museum by Evan Roberts in 1916. The visible plate side shows gilded bars and bridges held by blued steel screws alongside an exposed gear train and balance assembly. The balance cock is fitted with a blued regulator index pointing toward stamped 'A' and 'R' markings, and the museum's acquisition number is visible on one of the brass bridges.
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
- Bar movement
- Donation
- Donated by Evan Roberts in 1916
- Escapement
- Geneva lever escapement
- Condition note
- Incomplete
- Place recorded
- Switzerland
- Country of origin
- Switzerland
- Date of manufacture
- 1801-1900
Design
- Visible features
- • Gilt plates and separate bridges secured with blued steel screws. • Museum accession marking '1916-287' stamped or scratched on an upper bridge. • Regulator scale on the balance cock engraved with 'A' and 'R' and fitted with a blued steel pointer. • Exposed train wheels, barrel assembly, and balance wheel.
- Condition State and Provenance
- The object is explicitly described in the catalogue record as incomplete. The available documentation and image depict an unhoused movement assembly, with no case, dial, or hands described. The item entered the museum collection in 1916 as a donation credited to Evan Roberts. Further details such as physical dimensions, jewel count, and specific regional origin beyond Switzerland are not recorded in the source record.
- Identity and Escapement Classification
- This horological component is catalogued by the Science Museum Group as a Swiss bar movement, bearing the number 16670. The institution records its date of production within a broad nineteenth-century range of 1801 to 1900, with the maker catalogued as unknown. The institutional record designates the mechanism as incorporating a Geneva lever escapement. Catalogued under object number 1916-287, the item is classified under the category of Time Measurement and described as both an instrument component and a pocket watch.
- Visible Architecture and Mechanical Layout
- Visual observation of the movement reveals gilt plates and separate bridges fastened with blued steel screws. An exposed gear train, mainspring barrel assembly, and balance wheel are visible on the plate side. The balance cock is fitted with a regulator index featuring a blued steel pointer directed along a scale marked with 'A' and 'R'. In addition, the museum accession marking '1916-287' is visibly marked onto one of the upper gilt bridges.
Identification
- Object Number
- 1916-287
- Serial number
- 16670
- 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: Source notes the maker is unknown.
- Research required: Movement is catalogued as incomplete, lacking dial, hands, and case.