US 3040555 A
Description (OCR text may contain errors)
June 26, 1962 G WARTIAN SLIDING DOOR LATCH Filed 001;. 21, 1960 INVENTOR. 'ear ge War zlzx BY M4 3,94%,555 Patented June 26, 1962 3,04e,555 IDXNG DQUR LATCH George Wartian, Detroit, Mich, assignor to Wartian Lock onltlpany, St. Clair Shores, Mic a corporation of ac igan Filed Oct. 21, 19643, Ser. No. 64,132
Claims. (Cl. 7097) Another object of the invention is to provide a novel door latch and keeper construction and a locking mechanism associated therewith.
ther and further objects of the invention will be apparting from the scope of the present invention as set forth in the appended claims.
In the drawing:
l is an elevational view of a sliding door provided with the latch mechanism of the present invention; 2 is an end elevational view on an enlarged scale taken on line 2-2 of FIG. 1; p
G. 3 is a sectional view taken on line 33 of FIG. 2; FIG. 4 is a view similar to FIG. 3 showing a different relationship of the keeper and latch bolt; and
FIG. 5 is a sectional view taken on line 5-5 of FIG. 3.
keeper is provided extending keeper portion 42 which is offset from the base portion 36 so as to be spaced from position thereof shown in FIG.
p The latch bolt 44 is provided with a downwardly openg slot 56 adapted to be engaged by the outer surface 60 of the uplatch bolt has the portion 62 engaging behind the upwardly extending portion 42 of the keeper and disposed between such portion of the keeper and the door jamb 12.
of its operating member 72.
The latch bolt is provided with a projection 76 on its ing plate 86 and is provided on its inner end with a rib- 92 While in the illustrated embodiment of the invention the keeper is shown latch mechanism to the door, it will be apparent that this 'red.
the purview of the following claims.
Iclaim: 1. In a latch for a sliding door cooperable with a keeper having an upwardly extending keeper portion, a hollow casing, a latch bolt pivoted in said casing on a 4- horizontal axis, a cam surface on said latch bolt engagea latch bolt pivoted in said casing, a cam surface on said able with said upwardly extending portion of said keeper latch bolt engageable with said keeper portion of said upon closing of the door to pivot said latch bolt to its keeper upon closing of the door to pivot said latch bolt latched position, said latch bolt having a downwardly to its latched position, said latch bolt having a slot therein opening slot there-in one edge of which provides Said 5 one edge of which provides said cam surface, the keeper cam surface, the upwardly extending portion of said portion being received within said slot when the latch bolt keeper being received within said slot when the latch bolt is in its latched position so that a portion of said latch is in its latched position so that a portion of said latch bolt is disposed between said portion of said keeper and bolt engages behind said portion of said keeper whereby said door jarnb, a lock plate slidably mounted within said the engagement of said portion of said latch bolt with casing and having a portion movable into engagement said keeper pivots said latch bolt to its unlatched position with said latch bolt to prevent pivoting thereof when said upon opening of the door, a lock plate slidably mounted latch bolt is in its latched position, an elongated opening within said casing and having a portion movable into in said lock plate, a rotatable operating member extending engagement with said latch bolt to prevent pivoting therethrough said opening in said lock plate and journaled in of when said latch bolt is in its latched position, a rotatthe opposing side walls of said casing, said operating able operating member extending through said lock plate member having a radially extending arm thereon engagand journaled in the opposing side walls of said casing ing said lock plate and operable upon rotation thereof to and operable upon rotation thereof to slide said lock plate slide said lock plate into and out of said engagement into and out of said engagement with said latch bolt, and with said latch bolt, handles adapted to be mounted on manually operable means engageable with said operating opposite sides of the door, a manually operable member member for rotating the same to lock and unlock said on one of said handles engageable with said operating latch bolt. member for rotating the same, and a key-operated mem- 2. A latch according to claim 1 including yieldable ber mounted on the other handle and engageable with detent means between said lock plate and said casing for said operating member for rotating the same. lgglsdtrirglssard lock plate in said locked and unlocked References Cited in the me of this patent 3. In a latch for a sliding door a keeper having a base UNITED STATES PATENTS portion for attaching said keeper to the door jamb and a 1 596 24 Dunn Aug, 17 192 keeper portion offset from said base portion toward the 2 63 071 Adams 1 Feb, 2 1954 door, a hollow casing adapted to be mounted on the door, 2,917,915 R in an Dec, 22, 1959