Portable and detachable double casement window opposing turn lat

Details Portable and detachable double casement window opposing turn lat Portable and detachable double casement window opposing turn lat

1976-02-02

1977-01-18

Wolfe, Robert L.

Locks

Portable

70 19, 70 89, 292258, E05B 7300

Patent

active

040032272

ABSTRACT:
A tumbler lock securing device that can be applied to the double casement windows and doors without altering of the casement structure but can be simply detachably placed over opposing window or door handles in their depending latched positions and locking ratchet arms squeezed through a tumbler lock and pawl mechanism. Pawl levers are upwardly spring pressed toward ratchet teeth on the bottom edges of the locking arms that respectively extend in opposite directions and are released only with a key that turns the tumbler lock centerpiece and a depressible cam fixed thereto that acts upon one of two pawl levers but through an interlock arrangement between one of the pawls and the other so that upward spring action for the both pawls is served by but one compression spring. The lock and pawl mechanism can be separated from the locking arms or can be left locked to one of the casement handles when unlatched. A cross bar portion on the lock and pawl mechanism when the securing device is attached to the window handles to hold them in their latch positions, will underlie the locking stub ends of the latched handles on the wedge wear plate keepers, whereby to further prevent the turning and release of the window handles by one unless provided with a key.

REFERENCES:
patent: 1850602 (1932-03-01), Pineo
patent: 2151587 (1939-03-01), Cassileth
patent: 2597583 (1952-05-01), Holmsten
patent: 2899229 (1959-08-01), Jenks
patent: 3504405 (1970-04-01), Elliott-Smith

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