Patent Model - Improvement in Locks

Maker and role
Titus Powers, Patentee
Production date
Sep 06 1870
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Object detail

2 x 2 1/2 x 1/2" (5.1 x 6.4 x 1.3cm)
Powers' patent "consists in so combining within a lock a tumbler, bolt, fence, and double-acting spring, that when the tumbler is out of and free from the fence it is forced, necessarily, both laterally and vertically, away from the position in which it must be in order to enter the fence, thus making it necessary, in order to readjust the tumbler, to enter the fence, (and by that means permit the bolt to be thrown back into the lock after being thrown out,) to move the tumbler, both vertically and laterally, against the force employed to move it out of adjustment with the fence." (Patent Number 107,100)
Object number
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