Latch bolt assembly with selectively adjustable spindle backset

Details Latch bolt assembly with selectively adjustable spindle backset Latch bolt assembly with selectively adjustable spindle backset

E - Fixed Constructions

05

C

292/51

E05C 21/00 (2006.01) E05B 63/06 (2006.01) E05C 1/16 (2006.01)

Patent

CA 1155150

LATCH BOLT ASSEMBLY WITH SELECTIVELY ADJUSTABLE SPINDLE BACKSET Abstract of the Disclosure: A bolt is movable in a door-mounted casing between extended and retracted positions relative to the door edge by a latch operating mechanism including a transverse half-round spindle. The spindle actuates the latch operating mechanism by engagement with a longitudinally forward en- gagement surface of an insert assembled with the latch operating mechanism in spindle forward backset position, the motion being transferred longitudinally rearwardly by the insert into the latch operating mechanism and then forwardly to the bolt. The insert is in motion transferring connection with rearward projections of the latch operating mechanism retained in assembly partially by a casing rearward extension and partially by a casing telescoping removable sleeve. Adaption to spindle rearward backset positioning is accomplished by sleeve removal and end for end repositioning, insert transverse removal and sleeve telescoping repositioning in a lesser casing telescoping with the spindle then engaging rearwardly positioned engagement surfaces of the latch operating mechanism transferring motion directly therethrough forwardly to the bolt. The sleeve has a transverse operator opening aligned with the particular insert engagement surfaces or latch operating mechanism engagement surfaces in the alternate sleeve positioning, as well as fastener openings likewise alternately positioned.

375874

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