Mortice cylinder lock wrench structures

Details Mortice cylinder lock wrench structures Mortice cylinder lock wrench structures

1982-01-07

1984-05-08

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Plural pivoted jaws and handle-lever

B25B 1302

Patent

active

044467630

ABSTRACT:
Apparatus for removing and replacing a standard mortice cylinder or mortice thumbturn lock, the invention includes particular wrench structures for removing a mortice lock which has been drilled in order to cut away the set screw or cylinder yoke holding the cylinder in the door or other structures in which the lock is installed. The present wrench structures are also useful for removal of the mortice cylinder when the threads of the cylinder are crossed, when the cylinder is corroded, or when the screw head is broken. The present structures particularly allow removal and installation of mortice locks and similar locking apparatus with minimal damage to the lock face and without damage to the keyway, the expensive keyway thus being reuseable.

REFERENCES:
patent: 3185001 (1965-05-01), Viator
patent: 4252037 (1981-02-01), Raine

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