US1393911A

US1393911A - Automobile-door latch

Info

Publication number: US1393911A
Application number: US425149A
Authority: US
Inventors: Lawrence A Schumaker
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-11-19
Filing date: 1920-11-19
Publication date: 1921-10-18
Anticipated expiration: 1938-10-18

Description

L. A. SCHUMAKER.

AUTOMOBILE DOOR LATCH- APPLICATION min NOV. 19. 1920.

Patented Oct.

18, 1921. 2 sums-snzzr Mmwxa.

L. A. SC'HUMAKER.

} AUTOMOBILE DOOR LATCH. APPLICATION FILED NOV. 19. 1920.

1,393,911. Patented (m 18, 1921'.

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rmwntoz atkozmq UNITED STATES PATENT OFFICE.

AUTOMOBILE-D0 0R LATCH.

T 0 all whom it may concern Be it known that I, LAWRENCE A. SCHU- MAKER, a citizen of the United States, residing at Michigan City, in the county of La- Indiana, have invented certain new and useful 'Improvements in an Automobile-Door Latch, of which the following is a specification.

his invention relates to an automobile door latch and has for its principal object to provide a device of this nature which may be used with automobile doors or doors of buildings or other structures and which is provided with rigidly in a closed position thus rattling and at wind and cold.

Another object of the invention is to provide a latch which does not require the slampreventing the same time keep out the door is in its closed position.

A still further object of the invention is to genera ly improve upon latches of this character by providing a device which will be extremely simple, durable and inexpensive in construction, one which is efficient and reliable in operation, and well adapted to the purpose for which it is designed.

With these and numerous other objects in view, the invention resides in certain novel features of construction, and the combination and arrangement of parts as will be hereinafter fully described and claimed.

In the drawing I I Figure 1 is a rear elevation of the latch casing showing the bolt latch in an extended position,

Fig. 2 is a rear elevation of the latch casing showing the latch bolt in a retracted position,

Fig. 3 is a section taken on the line 83 of Fig. 1 looking in the direction of the arrow,

Fig. 4 is a section taken on line H of Fig. 1 looking in the direction of the arrow, and

Fig. 5 is a section taken on the line 55 of Fig. 1 looking in the direction of the arrow.

Referring to the drawings in detail it will be seen that the numeral 1 designates a cas- Specification of Letters Patent. Application filed November 19, 1920.

Patented Oct. 18, 1921; Serial No. 425,149.

ing which may be of any preferred construction and as shown is substantially rectangular in cross section having the lateral flange outer periphery and provided with apertures 3 so that the casing may be securely attached to a door in the usual manner. A block 4. is fixedly situated in the casing toward the center thereof as shown in Fig. 1 when the latch bolt is iii a locked position.

A bell crank lever 7 is rigidly mounted on the cylindrical bar '8 which is rotatably mounted in the casing 1. The portion of the bar 8 which passes through the bell crank is preferably square as indicated in Fig. 1 so that this bell crank lever 7 will be actuated upon movement of the bar 8. A suitable operating eye 9 is attached to one end of the bar 8 for rotating same. The bell crank lever for receiving the pin 13 provided in the latch bolt 5. stop extension 14 is this arm 10 and is adapted to abut the end the latch bolt 5 is in an extended position.

he arm 11 of the bell crank lever 7 is provided with a shoulder 15 at its end and this shoulder 15 is provided with a slot for receiving the rod 16 which is pivotally carried in the casingby means of a pin 17. The sides of the slot in the shoulder 15 from each other toward the end of 11 and form stops for the movement of the 1 rod 16 as will be later described. An expansion coil spring 18 is disposed around the bolt 16 so as to be between the eye 19 and washer 20. A roller 21 having a slot therein for receiving the rod 16 is disposed bethe bell Crank lever 7 is rotated so as to take the position shown in Fig. 2 of the drawing tendency oi a part of the spring to rotate the bell crank lever 7 but to the contrary will push straight in alinement with the arm 11.

I have provided a tripping mechanism for the bell crank lever 7 which consists of a link 22 having a curved slot 23 therein for receiving thepin 24: provided on the arm 10 of the bell crank lever 7 One end of this link is used as shown at 25 and a pin extends through the ends of the yokes so as to pivotally support a trigger 26. This trigger 26 consists of a shank 27 which is suitably pivoted intermediate its ends to the casing 1 as is shown at 28 and is provided with a right angularly extending extension 29 which is adapted to abut the door jamb 30 thus pulling upon the link 22 and slightly rotating the bell crank lever efliciently to angle to the bottom of: that at this the arm 11 latch bolt 5 place the bar 16 at an the casing 1 and it will be seen time the spring will push upon at an angle and thus cause the totake an extended position.

The bolt slot 31 provided in the door jamb 3O isbeveled outwardly or toward the irection in which the door will swing as shown at 32. The beveled portion 6 of the latch bolt 5 will engage the beveled portion 32 and thus the spring 18 which will be pushing upon the latch bolt 5 through the intermediacy of the bell crank lever 7 will cause these two beveled surfaces to slide in relation toeach other and since may slide the door will necessarily close as far as possible thus preventing rattling and at the same time keeping out wind and cold.

Obviously, the invention is not limited and restricted to the precise, and exact details of construction as illustrated and described, because it is susceptible of a variety of embodiments, and many minor mechanical changes may be made in such incorporation of the invention without departing fromv the substance or essence of the a trigger mechanism the bolt only preferred invention and without the sacrifice of any of its substantial benefits and advantages.

Having thus described my invention what I claim as new is i r 1. Incombination, a casing, a latch bolt slidable therein, a bell crank lever pivoted therein, one arm of said bell crank lever provided with a slot, a pin on said bolt adapted to ride in said slot, the other end of said bell crank'lever provided with a shoulder having a slot therein, a bar pivoted in the casing and having its end extending through and an expansion the slot coil spring holding the latch bolt in an extended position through the 'intermedia'cy of the bell crank lever.

2. In combination, slidable therein, a mounted in the casing, one arm of the bell crank lever provided with a slot, a pin on the latch bolt adapted to ride in the slot, the other arm of the bell crank lever provided with a shoulder having a slot extended therethrough, a rod pivotally carried in the easing so that one end slot in the shoulder, and a spring dlSPOSECl on the rod so as to hold the latch in a retracted or extended positionas described and for slightly moving. the bell crank lever so as to shunt the latch bolt in an extended position. r i 1 I 3. In combination, a casing, a bolt slidable therein, a bell crank lever having one arm attached to the boltcfor sliding same, means in said shoulder,

disposed on the rod for norma a casing, a latch bolt bell crank rotatably will extend through the i attached to the other arm of the bell crank I