Tally lock

Locks – Parts – attachments – accessories and adjuncts – Condition indicators

Patent

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Details

E05B 3904

Patent

active

041079680

ABSTRACT:
A tally lock has an enclosure frame adapted to be mounted on a door. A lock cylinder is disposed on the frame and carries a lock plug rotatable within the cylinder. At one end of the plug is a flange accessible through an opening in the frame and having a keyway therein into which extends a tab on a driver disc mounted for rotation in a ring on the frame. The driver disc has a flat and acts as a cam against a plate pivoted on the frame and connected by a pivoted link to a counter also mounted on the frame and disposed to display through another opening in the frame.

REFERENCES:
patent: 3221526 (1965-12-01), Stackhouse

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