Account of a Free Escapement, with considerable reduction of Friction

Catalogue no: 1479
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Urbain Jurgensen
Total pages: 4 Illustrations: 0 Language(s): English Publication date: c.1822
Editor: Publisher: Unknown
Dimensions: 210mm x 135mm Condition: Generally good
Related titles: Related library records:

Pages extracted from an unknown journal (possibly the Edinburgh Review), and bound separately between marbled paper covers.  Translated and abridged from Shumacher's Astronomische Nachrichten, March 1822.

Urbain (sic) Jurgensen described as "Chronometer-maker to the Danish Navy and Member of the Royal Society of Sciences at Copenhagen."

The author gives a brief precis of the developments in escapements for chronometers before describing his own, a variation of Earnshaw's spring detent escapement but one which utilises two very light escape wheels.

Room location: Library Extension Cabinet: F Shelf: 5
Search terms: Chronometers, Escapements
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