Thomas Hewitt
(Born 1799, died 1867)
A chronometer maker who devised many different forms of compensation balances.
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Thomas Hewitt (1799-1867)
October 10th, 2006 · No Comments
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John Arnold (1736-1799)
October 10th, 2006 · No Comments
John Arnold
(Born in Cornwall, 1736; died at Well Hall near Eltham, Kent, in 1799)
He invented the helical form of balance spring (Patent No. 1113, Dec 1775), and devised a chronometer excapement (Patent No. 1328, May 1782) very closely resembling the one by Earnshaw, which is now in use. In Arnold’s Escapement, the escape wheel teeth, […]
Tags: Biographies
