Locks – Operating mechanism – Key
Patent
1980-05-05
1981-11-24
Wolfe, Robert L.
Locks
Operating mechanism
Key
29216915, 29216917, E05B 1704
Patent
active
043016677
ABSTRACT:
Retracting mechanism for a deadlocking latch bolt comprises a U-shaped frame extension for the latch bolt tube, having parallel side walls joined at the rear by an integral rear wall and held spaced at the front by out-turned tabs engaged in the tube and riveted to its end wall by spring guide pins. A two-piece rotatable retractor is trapped between the side walls with its hub ends rotatable in bushings in such walls, and has a pair of arms axially separated by a central cylindrical section. The latch bolt tailpiece has a wide rear yoke portion formed by spaced parallel side legs which straddle and are guided by such central cylindrical section. One such leg carries a cross pin drivingly engaged in the slots of the retractor arms which swing 80.degree. to retract the tailpiece through a long stroke. The rear yoke has forward stop shoulders which engage a stop face on the latch bolt tube to position the tailpiece for a full retraction stroke.
REFERENCES:
patent: 2447190 (1948-08-01), Lickteig
patent: 2533023 (1950-12-01), Lickteig
patent: 3206959 (1965-09-01), Best
Best "4 T" Tubular Latch Assembly, drawings A-774, A-786, A-6702, and A-36.
Best "4Ton" Night Latch Assembly, drawings A-787, A-6703, A-5396, A-6761 to, A-6766.
Schlarge "B" Lock shown by Catalog pp. B-3 and B-18 and side elevation sketch.
Best Walter E.
Foshee William R.
Best Lock Corporation
Wolfe Robert L.
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