Patent Model - Improvement in Mainspring-Barrel Attachment for Watches

Maker and role
Ola Eliason, Patentee
Production date
May 03 1870
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Object detail

3/4" (1.9cm)
Eliason's patent "relates to an improved construction of the several parts of the motion of a watch. Thus, the pinion or first driving-wheel transfers the forward motion, caused by the spring when wound up, but it does not in the least degree partake of the backlash, caused by the accidental breaking of the mainspring." His improvement is a "method of connecting the wheel to the main-spring barrel, by aid of ratchet-wheel and pawls, transferring only the forward motion..." (Patent Number 102,517)
Object number
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