Lever handle mortise lock

Details Lever handle mortise lock Lever handle mortise lock

1984-05-04

1986-05-20

Moore, Richard E.

Closure fasteners

Bolts

Sliding

292DIG61, 292150, E05C 116

Patent

active

045896917

ABSTRACT:
An improved mortise lock is provided with spring means for independently returning each of the inside and outside lever handles from a rotated operating position. Inside and outside operating hubs are independently rotatably mounted in the case. A retraction lever extends from a pivot past the hubs and into retracting engagement with the tailpiece of the latch bolt. Rotation of one of the operating hubs causes a cam flange thereon to engage the retraction lever to pivot the retraction lever rearward to retract the latch bolt. In one embodiment, a complementary pair of inside and outside hub bias arms are pivotally mounted in the case in side-by-side relation. Each bias arm is biased against its companion hub to return the hub from a rotated lock-operating position. In another embodiment, a single hub bias arm is biased against either the inside or the outside hub.

REFERENCES:
patent: 91174 (1869-06-01), Slaight
patent: 1513094 (1924-10-01), Devereaux
patent: 1900328 (1933-03-01), Boggs
patent: 2494478 (1950-01-01), Kuzma
patent: 2596949 (1952-05-01), Welch et al.
patent: 3750433 (1973-08-01), Sanders

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