Template for mortice cylinder lock removal

Details Template for mortice cylinder lock removal Template for mortice cylinder lock removal

1982-01-07

1984-05-08

Briggs, William R.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

B23B 4902

Patent

active

044471769

ABSTRACT:
Apparatus for facilitating the removal and replacement of a standard mortice cylinder or mortice thumbturn, the invention provides template structure which allows a mortice lock to be drilled in order to cut away the set screw or cylinder yoke holding the cylinder in the door or other structure in which the lock is installed, the lock then being removed by separate structure. The present template particularly allows drilling of a mortice lock or similar locking apparatus with minimal damage to the lock face and without damage to the keyway, the expensive keyway thus being reusable.

REFERENCES:
patent: 2423164 (1947-07-01), Williams
patent: 2424485 (1947-07-01), Miller
patent: 4261093 (1981-04-01), Steffen et al.
patent: 4307983 (1981-12-01), Blough et al.

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