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Publication numberUS2668073 A
Publication typeGrant
Publication dateFeb 2, 1954
Filing dateFeb 27, 1951
Priority dateFeb 27, 1951
Publication numberUS 2668073 A, US 2668073A, US-A-2668073, US2668073 A, US2668073A
InventorsCollar Frank R, Mitchell Jack C
Original AssigneeAdams Rite Mfg Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Latch mechanism
US 2668073 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Feb. 2, 1954 F. R. COLLAR ET AL 2,668,073

LATCH MECHANISM Filed Feb. 27, 1951 FQflfi/K 2. 60461949, JRC'KC. MTG/ 62A,


BY Qua/l ermavn Patented Feb. 2, 1954 LATCH MECHANISM Frank R. Collar,

Los Angcles, and Jack C. Mitchell, La Crescenta,

Calif., assignors to Adams Rite Manufacturing Company, Glendale, Calif., a corporation of California Application February 27, 1951, Serial No. 212,971 2 Claims. (01. 292-192) The present invention relates generally to looks, and is more particularly concerned with a door lock for use with folding accordion type doors, sliding doors, and the like.

It is one object of the preesnt invention to provide a lock structure of simple, compact construction, having a small number of moving parts, and which may be economically manufactured.

A further object has to do with the provision of a novel lock structure having a shielded reciprocally mounted bolt arranged to be protracted from a shielded position into interlocking engagement with a keeper, andwhich will be deadlocked in the keeper interlocking position.

Another object of the herein described invention is to provide a uniqu keeper interlocking mechanism which is automatically moved into interlocking and released positions with respect to the keeper in response to protraction and retraction movements of the bolt.

Further objects of the invention will be brought out in the following part of the specification, wherein detailed description isfor the purpos of fully disclosing theinvention without placing limitations thereon.

Referring to the accompanying drawings, which are for illustrative purposes only:

Fig. 1 is a side elevational view of a lock embodying the features of the present invention;

Fig. 2 is an edge elevational view of the same;

Fig. 3 is a sectional view, portions being broken away to show certain details, the bolt being in retracted position, taken substantially on line 33 of Fig. 2';

Fig. 4 is a view similar to Fig. 3, except that the lock is shown with the boltin protracted keeper engaging position, and is locked against opening; and

Fig. 5 is an enlarged fragmentary view illustrating the operative action of the bolt keeper engaging jaws.

Referring now to the drawings, the lock structure of the present invention is shown as being embodied in an enclosing casing, as generally indicated by the numeral l0, having spaced apart side walls II and I2.

The side wall II, as shown in Figs. 2 and 3 is deformed along a marginal edge to provide spaced apart face mounting flanges l3 and II which respectively are provided with mounting screw receiving apertures l5 by which the casing and associated lock mechanism may be mounted in a door edge.

Between the flanges 3 and M, the wall H is extended and turned back upon itself to provide a U-shaped projecting portion l6 which forms a shield for one end of the lock bolt I! which will hereinafter be described in detail. The transverse configuration of the projecting portion I6 is such that it will conform with the shape of an abutment strip placed along the door edge.

The bolt l! is of laminated construction, being composed of side plates l8 and I9, having a straight portion 26 at one end and an integrally formed U-shaped portion 2| at its other end which defines a side opening recess 22. The plates I8 and I 9 are held in spaced apart relation by means of a spacer plate 23, as shown in Fig. 5, which generally conforms to the U-shaped end portion 2| of the side plates. The side plates are secured to the spacer plate by conventional means, and in the present instance is shown as being spot welded at spaced points as indicated by the numeral 24.

The bolt I1 is supported for reciprocal movement in the casing, spaced pins 25-25 being carried by the side plates l8 and 9, these pins being arranged to extend into an adjacent slot 26 of the side wall II or |2 as the case may be. Thus, the bolt is positioned with its straight end portion 20 extending into the projecting portion It,

the bridging portion thereof being provided with a slot 2'! through which the end portion 26 may be moved to protractile and retractile positions.

In the straight portion 2|! of the bolt, between the spaced plates I8 and I9, right and left hand keeper engaging jaws28a and 28b are mounted.

These jaws are of similar construction, each hav-' ing divergent arms '29 and 30 extending outwardly from a pivot pin 3| placed intermediate the ends of the jaw. As shown in Fig. 5, the arm 29 is laterally extended in its edge margin to form a hook defining tooth 3|. The arm 30 is laterally extended in the direction of the tooth 3! to form a rounded protuberance 32, the tooth 3| and protuberance 32 being spaced apart and cooperating to form a notch or recess 33 therebetween.

The two jaws are mounted in back-to-back position with their teeth 3|3| extending outwardly in opposite directions. spring 34 is anchored at its midportion bya pin 35 extending between the adjacent portions of A wing shaped 5 to occupy a position projecting laterally of said U-shaped recessed portion when said arm is in said position normal to said shoulder; a locking member supported by said casing in a position adjacent said recessed portion of said bolt and so as to be movable toward and away from said recessed portion, said locking member having a shouldered portion positioned so as to engage said arm member when it is in said position projecting laterally of said recessed portion, and to thereby lock said rotatable arm in said position normal to said shoulder.



References Cited in the file of this patent Number Number UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US195270 *Aug 7, 1877Sep 18, 1877 Improvement in reversible latches
US1839519 *Dec 27, 1929Jan 5, 1932Wratschko Joseph CDoor lock set
US1966171 *Dec 24, 1930Jul 10, 1934John HoltzmanHand operated lock
US2174958 *Nov 1, 1938Oct 3, 1939Townsend Backhouse HeadleyDoor lock
FR694262A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3107112 *Nov 7, 1960Oct 15, 1963Schlage Lock CoLatch bolt unit
US3492038 *Dec 18, 1967Jan 27, 1970Schlage Lock CoDouble-acting door pull lock
US4105234 *Apr 29, 1977Aug 8, 1978Ray EberhartLatch mechanism
US4239268 *Jun 5, 1978Dec 16, 1980Rider Harlan HSliding door lock
US4566725 *Feb 10, 1984Jan 28, 1986Almet Hardware LimitedDeadlock mechanism
US4902053 *Jul 5, 1989Feb 20, 1990Oy Wartsila AbDoor lock
US6663147 *Sep 7, 2000Dec 16, 2003Alban Giacomo S.P.A.Lock
US7836737 *Nov 23, 2010I-Tek Metal Mfg. Co., Ltd.Lock for pivotal doors and sliding doors
US7942457 *May 17, 2011Donald BellLever-handled pocket door latching system
US20090243306 *Mar 31, 2008Oct 1, 2009Chung-Liang LinLock for pivotal doors and sliding doors
DE3929041A1 *Sep 1, 1989Mar 7, 1991Aljo Aluminium Bau JonuscheitLocking mechanism for cupboards and cabinets - has notched latch and vertical separation of parts on insertion of key
DE3929041C2 *Sep 1, 1989Apr 6, 2000Aljo Aluminium Bau JonuscheitVerschlußvorrichtung
DE10063327B4 *Dec 19, 2000Jun 1, 2006Assa-Ruko Sicherheitssysteme GmbhAn einer Tür, einem Fenster oder dergleichen anschlagbarer Beschlag
U.S. Classification292/192, 70/131, 292/150
International ClassificationE05B63/12, E05B63/00
Cooperative ClassificationE05B63/127
European ClassificationE05B63/12G