![](https://coimages.sciencemuseumgroup.org.uk/42/340/large_thumbnail_1962_0375.jpg)
Thomas Earnshaw 1749 - 1829
- occupation:
- Chronometer maker, Watchmaker
- Nationality:
- English; British
- born in:
- Ashton under Lyne, Tameside, Greater Manchester, England, United Kingdom
1774 - admitted to Fleet debtor's prison. 1780 - began improving marine timekeepers. 1782 - John Arnold patents variation of Earnshaw's escapement design as his own. 1783 - Earnshaw patented original design. 1806 - 'Explanations of Timekeepers Constructed by Mr John Arnold and Mr Thomas Earnshaw' published.