E - Fixed Constructions – 05 – C
Patent
E - Fixed Constructions
05
C
292/31
E05C 17/44 (2006.01) E05C 5/00 (2006.01) E05B 65/08 (2006.01) E05C 3/04 (2006.01) E05C 3/12 (2006.01) E05C 17/50 (2006.01)
Patent
CA 1316965
ABSTRACT A security lock for a double-hung sash window assembly which is to be mounted on a stile of one of the sash frames to limit movement of the second sash frame relative to the one sash. The lock includes a casing adapted to be mounted within one of the sash frames, a faceplate of the casing having an opening therein communicating with an interior casing cavity. A tumbler pivots in the cavity and is spring biased to normally project through the opening to engage the second sash. A leaf spring is mounted within the casing cavity normally to bias the tumbler into its locking posi- tion, but permitting the tumbler to be retracted into the casing. The lock can be supplied as an assembled unit for installation.
570002
Blake Cassels & Graydon Llp
Newell Operating Company
LandOfFree
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