Patent Model - Improvement in Permutation-Locks
Maker and role
James Sargent (b.1824, d.1910), Patentee
Production date
Jan 04 1870
See full details
Object detail
Media/Materials
Brass, cast iron
Measurements
8 x 6 x 9" (20.3 x 15.2 x 22.9cm)
Description
Sargent's patent "is an improvement upon that of Linus Yale, in which an eccentric roller is combined with the cam for disconcerting the action upon the tumblers. The invention consists in combining with the cam an arrangement of two or more eccentric rollers, of varying eccentricity, turning upon the same bearing, so that in revolving one or both may turn and alternate in action, thereby greatly increasing the difficulty of mapping out or locating the position of either." (Patent number 98,622)
Collection
Object number
61.47.370
Currently on display?
Maker
Public comments
Be the first to comment on this object record.