Specification of Edward John Dent - Chronometers and Other Timekeepers - No. 9302

Catalogue no: 1041
Dewey No: Subject(s): Patents
Author(s): Edward John Dent
Total pages: 9 Illustrations: 1 fold out Language(s): English Publication date: 1842
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Paper cover very fragile
Related titles: Edward John Dent by Vaudrey Mercer (S2) Related library records:
Relates to; "Certain Improvements in Chronometers and other Timekeepers". The patent describes a secondary compensation device for a chronometer balance (a primary compensation with my continuous secondaty compensation). Also, "the simultaneous locking of two escape wheels by one locking spring in a chronometer or other portable timekeeper". Reprint of 1856
Room location: Library Cabinet: Q Shelf: 4
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