Latching device with adjustable backset

Locks – Special application – For closures

Patent

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Details

70379R, 70448, 70461, 292 1, 292169, 292337, 292DIG60, E05B 904

Patent

active

046024905

ABSTRACT:
The backset of a deadbolt lock may be adjusted selectively between 23/8" and 23/4" by manually shifting a spring-loaded pin which extends through vertical slots in the lock bolt, U-shaped slots in the driver bar and inverted L-shaped slots in the lock case. The pin also connects the driver bar to the bolt and causes the bolt to move between extended and retracted positions when the operating spindle of the lock is turned.

REFERENCES:
patent: 40875 (1863-12-01), Williams
patent: 4248068 (1981-02-01), Esser et al.
patent: 4372594 (1983-02-01), Gater
patent: 4427224 (1984-01-01), Bergen
patent: 4446707 (1984-05-01), Mullick
Locksmith Ledger, May 1984, pp. 80 and 81.

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