A skeleton clock designed to represent the terrestial globe by Henry Gratte

Made:
1800 in London
A spherical skeleton clock designed to represent the A spherical skeleton clock designed to represent the A spherical skeleton clock designed to represent the

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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A spherical skeleton clock designed to represent the
Science Museum Group / The Clockmakers' Museum
© The Board of Trustees of the Science Museum, London

A spherical skeleton clock designed to represent the
Science Museum Group / The Clockmakers' Museum
© The Board of Trustees of the Science Museum, London

A spherical skeleton clock designed to represent the
Science Museum Group / The Clockmakers' Museum
© The Board of Trustees of the Science Museum, London

A spherical skeleton clock designed to represent the terrestrial globe by Henry Gratte, London c.1800, once belonging to the Astronomer Royal, Sir Harold Spencer Jones.

The spherical skeleton movement is supported on a brass pillar provided with three folding legs. Degrees of longitude are marked around the horizon of the globe. The time is shown in hours and minutes by means of two revolving bands which are read against a fixed red glass sun, the minutes being indicated on the upper band and hours on the lower. The horizontal dial is calibrated in four sections of 0° to 90° and the cardinal points S, E, and W are also shown (N missing).

The movement has a verge escapement (possibly later), fusee, pendulum and hour-striking on bell. Signed 'Henricus Gratte, invenit & fecit Londini'. Also with custom made winding key.

This clock belonged to the Astronomer Royal, Harold Spencer Jones, and was presented by his wife to the Worshipful Company of Clockmakers in 1961. Clockmakers' Museum No. 571

Details

Category:
Clockmakers
Collection:
The Worshipful Company of Clockmakers
Object Number:
L2015-3455
Materials:
brass (copper, zinc alloy), steel (metal) and silvered
Measurements:
overall: 340 mm x 180 mm x 160 mm,
type:
spring clock, skeleton clock and verge escapement
credit:
Lent by the Worshipful Company of Clockmakers