Specification of Samuel Smith - Escapement for Watches - No. 3620

Catalogue no: 1019
Dewey No: Subject(s): Patents
Author(s): Samuel Smith
Total pages: 2 Illustrations: None Language(s): English Publication date: 1812
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper covers fragile
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Notes:
Relating to, "An Inproved Escapement for Watches by an Invention calculated to make them Beat Dead Seconds from Principle and Parts of Seconds, by means of Clock Pallets attached to a Lever operating on a Vertical Wheel". This is the patent detailing what is now known as the Horizontal Lever Escapement. Reprint of 1856 Malcolm Gardner, Horological Bookseller sticker on front cover and first page.
Room location: Library Cabinet: Q Shelf: 4
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