Safety fastening

Details Safety fastening Safety fastening

1977-07-25

1978-10-17

Moore, Richard E.

Closure fasteners

Extension link

Slotted bar

E05C 1716

Patent

active

041205235

ABSTRACT:
An improved fastening device for use on doors and the like which includes a bolt, or latch, having a guide with stops therein in which slide a pair of pins on a flange which is to be fixedly attached to the door. The bolt has a mouth with a flared opening into which fits a rectangular, shaped pin of a catch which is attached to the door frame. The bolt can be moved with respect to the flange pins so that the mouth opening clears and accepts the latch pin. Also the bolt can pivot with respect to the pins to tilt and thereby allow a partial, controlled opening of the door in which position the mouth opening cannot clear the latch pin so that the door cannot be opened. In a further embodiment the latch pin can be rotated by a key so that the bolt can clear the pin with the door in a controlled open position.

REFERENCES:
patent: 984612 (1911-02-01), Spangler
patent: 2407900 (1946-09-01), Paul
patent: 3924885 (1975-12-01), Markovitch
patent: 4048822 (1977-09-01), Luling

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