Closure fasteners – Bolts – Sliding
Patent
1974-10-03
1976-02-10
Craig, Jr., Albert G.
Closure fasteners
Bolts
Sliding
292 58, 292172, 292174, 2923363, 292337, E05C 114
Patent
active
039375048
ABSTRACT:
The main housing is an exact size for insertion in the conventional door, is adjustable for door thickness and allows conventional hole cutting and preparation. This housing is cylindrical, and has two sides with working parts built in one side, each side having an external or internal threading to be screwed together. Only one screw is used in installation to connect the two inside and outside sliding recessed plates together.
The latch is retracted by means of a wheel and rod following a cam track, aided by a spring positioned in the latch housing. The track is V-shaped and in the latch housing wall, the wheel and rod traveling down one side thereof after a pull is enacted, or the other side thereof after a push is enacted. The wheel is connected to the latch bolt by the rod.
From the opposite end of the latch the latch bolt is inserted into the hollow pinion housed in the main housing to react to the push and pull.
The latch bolt is projected by springs built in the external threading side of the main housing, one spring being attached to the supporting brace and pinion, the other spring being attached to the standing structure and pinion.
The entire Push and Pull Door Latch is locked in place when the face plate is inserted and screwed.
REFERENCES:
patent: 200318 (1878-02-01), Ludlow
patent: 1211437 (1917-01-01), Gruber
patent: 1461756 (1923-07-01), Croning
patent: 1589957 (1926-06-01), Handell
patent: 1720640 (1929-07-01), Wread
patent: 2036154 (1936-03-01), Littledale
patent: 2431105 (1947-11-01), Brinson
patent: 3385622 (1968-05-01), Winger
patent: 3495862 (1970-02-01), McClintock
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