Door knob latch apparatus

Details Door knob latch apparatus Door knob latch apparatus

1981-01-05

1983-06-07

Holko, Thomas J.

Closure fasteners

Portable securer plate or bar

Sliding holding member

E05C 1918

Patent

active

043867979

ABSTRACT:
A door knob latch apparatus is disclosed herein for releasably securing a door in its closed or shut position which includes a rigid base member having a lateral tang adapted to be inserted through the bolt opening in a strike plate mounted on a door jamb. The base member includes a vertical slot opening along the top edge of the base member for slidably receiving a corresponding open-ended slot provided in a door knob latch plate so that the latch plate extends normal to the longitudinal axis of the base member. The latch plate further includes a semi-circular cut-out formed in its end opposite to its end carrying the open slot which is adapted to be placed over the door knob installation in the door itself. Therefore, when the bolt is introduced through the strike plate opening into the bolt recess in the jamb, the base member is held rigid by virtue of the tang and the latch plate is rigid by engagement with both the base member and door knob per se.

REFERENCES:
patent: 603477 (1898-05-01), Butts
patent: 827624 (1906-07-01), Foster
patent: 848644 (1907-04-01), Flegel
patent: 866548 (1907-09-01), Wilkinson
patent: 936164 (1909-10-01), Reid
patent: 2396982 (1946-03-01), Bousquet
patent: 3316105 (1967-04-01), Oesler
patent: 3416333 (1968-12-01), Weingart
patent: 4004833 (1977-01-01), Hull
patent: 4135748 (1979-01-01), Roberts
patent: 4155578 (1979-05-01), Rolland

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