US1570135A

US1570135A - Automatic latch

Info

Publication number: US1570135A
Application number: US697892A
Authority: US
Inventors: George C Emmert
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-03-08
Filing date: 1924-03-08
Publication date: 1926-01-19
Anticipated expiration: 1943-01-19

Description

Jan. 119 1926. l 1,570,135

G. c. EMMERT l Allround LATCH Filed March 8. 1924 INVENToR bbmk f lWww-r ATTORNEYS Patented Jan. 19, 1926.

UNITED STATES PATENT OFFICE.

GEORGE o. vnltUMIERT, F MOUNT MORRIS, ILLINOIS.

AUTOMATIC LATCH.

Application iii-ea March 9, 1924. Vseriai No. 697,892.

To all whom t may concern: 8 in the door 1. It will be observed from Be it known that I, Gnoncr. GEMMERna this construction that the bolt 5 may be actucitizen of the United States, and a resident ated from either side of the door 1. of Mount Morris, county of Ogle, State The bolt is carried by a casing 9. A

5 of Illinois, have invented a new and useful spring 10 bears against a washer'11, and a 60 Improvement in Automatic Iiatches,` of pin 12 that are carried by the bolt and also which the following is a yfull, clear, and eX- bears against one end of the casing 9. This act description. spring is adapted to yieldably hold the bolt My invention relates to improvements in in the recess 4.

automatic latches, and it consists in the com- The looking device for holding the bolt 05 binations, constructions, and arrangements in retarded position consists in a leaf spring herein described and claimed. f f 13 that has a portion thereof bent into a An object of Amy invention is to provide groove 14 (see Figure 3), this groove being an automatic latch which is an improvement adapted to receive the shankl of the bolt 5.

15 over the patented orm of my device, No. The walls of the grooves 14 have recesses 15 70 846,651, patented March 12, 1907. In the therein that receive the lugs 16 on the bolt patented form of the vdevice I showed a 5. It will be noted from Figure 2 of the latch in which the spring bolt was'automatdrawings thatthe wall 17 of the recess 15 ically released by a spring catch, when this 1s shorter than the wall 18. It will further 20 catch struck the door Jframe. In that form be noted that'the cam edge 19 extends from 75 of the device I also showed the bolt retainthe recess 15 to the body of the spring 13. ing catch as being disposed eXteriorly of The leaf spring 13 tends to move the groove the casing. The principal object of this 14 ntO engagement with the bolt 5. present device is to provide a catch that is From the foregoing description of the disposed within the casing and is thus provarious parts of the device, the operation 80 teeted, thereof may be readily understood. In Fig.

A 'further object of my invention is to 2 I have shown the bolt 5 moved into open provide a latch in `hich the handle projects position by the dotted lines in this figure. through the door, whereby the latch may As the bolt is moved from the full line pobe operated from either side of the door. sition into the dotted line position, the lugs S5 A further object of my invention is to v16 will engage with the cam edges 19 and provide a device of the type described will depress the groove-shaped member 14 which is simple in construction, and durable until the lugs are received in the recesses 15. and etiicient for the purpose intended. y The portion of the leaf spring that bears Other objects and advantages will appear against the stop 3 will now move the door 90 in the following specification, and the novel from the stop and will also move the groovefeatures of the invention will be particularly shaped member 14 into engagement with the ointed out in the appended claims. bolt 5, whereby the recess 15 will receive the My invention is illustrated in the accomlugs 16. The parts of the device will now panying drawings, Jforming part of this assume the position shown in dotted lines 95 application, in which in Figure 2. The door may now be opened Figure 1 is a plan view of the device, y in the ordinary manner. Figure 2 is a section along the line 2-2 In closing the door, it is merely necessary of Figure 1, and to swing the door so as to cause it to strike Figur-e 3 is a section along the line 3-3 of the stop 3. The portion of the leaf spring 100 Figure 2. 13 that projects beyond the casing 9 will In carrying out my invention I make use strike the stop 3 and will move the grooveof a. door 1 and a door trame 2. The frame shaped portion 14 from the position shown 2 has astop 3 against which the door 1 in Figure 3 into the full line position in Figabuts when the door 1s in closed position. ure 2. This movement releases the lugs 16 105 The stop 3 has a recess 4 that is adapted to and permits the spring 10 to move the bolt receive the tree end of the spring-pressed into the recess 4. The door is now locked bolt 5. As clearly shown in Figure 2, the in closed position. bolt 5 is provided with a handle 6 that has The device is extremely simple in cona portion 7 projecting through `an ope-ning struction -and provides .a novel means for 110 CII automatically locking the door When it is swung into closed position. As heretofore stated, the principal diii'erence in the present device and the patented device lies in the fact that the groove-shaped member lei takes the place of the locking dog 22 in the patented device, and is disposed inside ol the casing instead o'l exterior of the casing, as shown in the patented device.

I claim:

l. An automatic latch comprising` a casing, a spring pressed bolt slidably carried by said casing, lugs carried by said bolt, a bolt retaining member having a groove adapted to receive said bolt, the Walis of said groove 'having notches therein, aid notches being adapted to receive said lugs to hold said bolt in retracted position, said retaining member having a portion projecting beyond said casing, this portion being swung into operative position when said lugs are received in said notches.

2. An automatic latch comprising a casing, said casing being constructed so as to be secured to a door, a spring-pressed bolt slidably carried by said casing, lugs carried by said bolt, said bolt being provided With a handle, a portion of said handle extending through an opening in the door, a bolt-retaining member having a `groove adapted to tu receive said bolt, the Walls ot said groove having notches therein, said notches being adapted to receive said lugs to hold said bolt in retracted position, and stop members `formed by the Walls ot said groove, said refi by said bolt is held in retracted lposit-ion, and

stop members carried by said bolt retaining member for limiting the movement ot said bolt in one direction said bolt retaining member being Amovable to release said bolt. GEORGE C. EMMERT.