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Papers on chronometer improvements, 1855 - 1859

Reference Code: GBR/0180/RGO 6/592

Scope and Contents

Correspondence and papers concerning refinements and improvements to chronometers, including B. Russell's new escapements, with drawings; J.V. Weber's plan for equalising tension in the main spring, with plans; trials of J.M. Bloxam's gravity clock escapements; J.E. Merritt's compensating pendulum; E.T. Loseby's improvements in clocks, with plans and a description of the Leicester Exchange Clock; S. May's new chronometer balance; J.R. Hall's patent for improved clocks and watches; a hermetic case tested by J. Washington; C. Frodsham's trials of chronometers; M.J. Johnson's magnetic dispenser; and claims by J.G. Ulrich for rewards for his chronometers.


  • Creation: 1855 - 1859


Conditions Governing Access

From the Management Group:

Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (


1 volume(s) (1 volume)

Language of Materials


Former / Other Reference


Finding aid date

2006-01-06 11:51:23+00:00

Includes index.

Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
West Road
Cambridge CB3 9DR United Kingdom