Specification of Harrison Mill Frodsham - Escapaments for Watches and Clocks - No. 2912

Catalogue no: 1066
Dewey No: Subject(s): Patents
Author(s): Harrison Mill Frodsham
Total pages: 2 Illustrations: None Language(s): English Publication date: 1876, !5th July
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Paper cover fragile
Related titles: The Frodshams, by Vaudrey Mercer, pp. 161-2 Related library records:
Relates to, "Improvements in Independent Equi-motive Escapements for Watches, Clocks, and other Timekeepers". The patent describes a form of constant force escapement. Printed 1877 Malcolm Gardner, Horological Bookseller sticker on front cove
Room location: Library Cabinet: Q Shelf: 4
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