US2492322A

US2492322A - Knobless door latch

Info

Publication number: US2492322A
Application number: US674890A
Authority: US
Inventors: Frank W Russell
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-06-06
Filing date: 1946-06-06
Publication date: 1949-12-27
Anticipated expiration: 1966-12-27

Description

Dec. 27, 1949 w, R E 2,492,322

2 She'ets-Slieet 1 Filed June 6, 1946 INVENTOR.

FRANK WRULSSELL ATTIC! RN EY Dec. 27, 1949 F w, RUSSELL 2,492,322

KNOBLES S DOOR LATCH Filed June 6, 1946 v 2 Sheets-Sheet 2 m 2 Lh 8 INVENTOR. H Q FRANK WRUSSELL ATTCI RNEYB Patented Dec. 27, 1949 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to a knobless door latch for swinging doors or sliding doors. The principal objects of this invention are to provide a latch that is modern and streamlined in design. eliminating the use of door knobs, easy to keep clean and germ free, easy to install, longer lived due to the parts thereof being less exposed, and is inexpensive to manufacture with few operating parts.

With the above and other objects and advantages in view, the invention consists of the novel details of construction, arrangement and combination of parts more fully hereinafter described, claimed and illustrated in the accompanying drawings in which:

Figure 1 is a perspective view of the latch embodying the invention;

Figure 2 is a perspective view of the strike plate and locking means for the bolt latch;

Figure 3 is a plan view thereof;

Figure 4 is an edge view thereof;

Figure 5 is a sectional view of the latch on the line 5-5 of Figure 8;

Figure 6 is a sectional view on the line 66 of Figure 7;

Figure 7 is a cross sectional view of the latch;

Figure 8 is a sectional view on the line 8-8 of Figure '7; and

Figure 9 is a modified form of the invention.

Referring more in detail to the drawing, the reference numeral l0 designates a section of a door on which the latch I2 is mounted.

To permit adjustment of the latch to doors of varying thicknesses, the housing 14 comprises complementary side plates l6 and I8 which are bent at right angles along the lines 20 to form the end plates 22 which are joined at the rear thereof by a plate 24 which by means of screws 26 coacts with elongated slots 21 permitting adjustment of the side plates for difierent thicknesses of doors. The side plates are secured to th door It! by fasteners 28, and door plates 30 are hingedly mounted at 32 in the plates. The doors are provided on their rear surfaces adjacent the forward edge thereof with apertured ears 34 having nuts 36 pivoted thereto by pins 38, and arms 40 are threadably received in the nuts 36 at one end thereof and provided with an eye 42 at the other end thereof for pivotal connection by a pin 44 to the sliding bolt 46.

The bolt 46 is provided with an elongated slot 48 for the mounting thereof on the transverse pin 50 mounted on plate l6 and receivable in the keeper 52 on plate l8, and a recess 54 in the door l0 permits full retraction of the bolt 46 at all 55 1,164,743

times. It will also be noted that the eyes 42 of the arms 40 are also receivable in the slot 48. The forward end of the bolt is also receivable in the medial aperture 56 formed in plate 24 and a collar 58 on the bolt engages the leaf spring 60 mounted in opposed keepers 62 on the plate 24 for the tensioning of the bolt.

In Figure 9, the spring has been replaced by a coil spring 64 and the housing 66 is made in one piece of sheet metal bent to form the sides 68 and end plate [0; otherwise, the structure is as previously described.

A strike plate 70 adapted for mounting on the jamb I2 by means of fasteners 74 is provided with the opening 16 for reception of the bolt 46 and a latching arm I8 is pivoted at on the plate 10 for engagement in the transverse slot 82 in the bolt 46 for the retaining of the bolt in the keeper.

The bolt is retracted by means of the pivoted doors 30 inward pressure thereon causing the arms 40 to slide the bolt rearwardly. Both doors open simultaneously, and the spring returns the bolt to extended position after pressure on the doors has been released.

Thus a latch has been provided in accordance with the objects of the invention, and it is believed that the operation and construction thereof will be apparent to those skilled in the art. It is also to be understood that changes in the minor details of construction may be resorted to, provided they fall within the spirit of the invention, and the scope of the appended claim.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

A door latch of the type described, comprising an adjustable housing, a bolt slidable in the housing, an elongated slot in said bolt longitudinally thereof, a pin supported by said housing and receivable in the slot in said bolt to retain said bolt in sliding position, means for sliding the bolt into locked position and said means comprising a spring sleeved on said bolt and adapted to project said bolt outwardly of said housing during the sliding movement thereof, means for sliding the bolt into unlocked position and said means comprising outwardly diverging arms pivotedly connected to the bolt within the slot at their inner ends, and means for operating the means for sliding the bolt into unlocked position and said means comprising door plates pivotally connected to the outer ends of said arms and hingedly mounted in said housing.

FRANK W. RUSSELL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Musselman et al. Dec. 21, 1915 1,249,472 Painter et al. Dec. 11, 1917 1,430,330 Seaver Sept. 26, 1922 1,687,248 Hurd Oct. 9, 1928 1,964,114 Gerlach et al. June 26, 1934