Specification of Alexander Melville Clark - Stop Watches - No. 2894

Catalogue no: 1067
Dewey No: Subject(s): Patents
Author(s): Alexander Melville Clark
Total pages: 4 Illustrations: 1 Language(s): English Publication date: 1877, 28th July
Editor: Publisher: The Commissioners of Patents for Inventions
Dimensions: 290mm x 200mm Condition: Blue paper cover fragile
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Relates to; "Improvements in Stop Watches". Four innovations are described as follows; 1. "In horse-timing watches the quarter second hand and its dial located on the top of the watch movement". 2. "The timing attachment consisting of a quarter second and split quarter second hand, mounted on a short centre post, and geared with the watch train." 3. The combination of bevelled and toothed gearing that can be thrown in or out of gear when needed. 4. The combination of bevel gears, inverted bevel gears with lifting and loering springs to establish or interrupt connection of the watchmovement and its timing attachment. Printed 1878
Room location: Library Cabinet: Q Shelf: 4
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