Safety lock

Details Safety lock Safety lock

1989-08-18

1991-12-31

Wolfe, Robert L.

Locks

Parts, attachments, accessories and adjuncts

For key-operated mechanism

70370, E05B 0908

Patent

active

050760823

ABSTRACT:
Invention patent for "Safety Lock" comprised by a mechanism (1) having a case composed of two parallel plates (2) interconnected by spacers (3), internally provided with an operating drive (4) for a latch bolt (5) and for a latch (6), this latter being also operable by means of a handle or alike, which passes through a corresponding opening (7), and, further, having a barrel block (8) incorporated in said mechanism (1) in transversal direction and being provided with a longitudinal hole or passage (9) which receives a puzzle barrel comprised by one or more rows of spring pin assemblies positioned radially with respect to two barrels (10) inserted in said passage (9), each of which has a cam configurating, eccentric and internal pin (11) which cooperates with the operating drive (4), said book (8) being retained within said mechanism by a drawer-like arrangement. The barrel block (8) is provided with a transverse channel (12) which houses cam (11) completely and leaves free a wide lower section (13), the side walls of channel (12) presenting small steps (14) along the upper edges, thereby defining guides (15) which are insertable in a corresponding aperture (16) of the said mechanism (1).

REFERENCES:
patent: 2284409 (1942-05-01), Erath
patent: 3740979 (1973-06-01), Crepinsek

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