US1379394A

US1379394A - Nut-lock

Info

Publication number: US1379394A
Application number: US411241A
Authority: US
Inventors: Cocks George Holmes
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-09-18
Filing date: 1920-09-18
Publication date: 1921-05-24
Anticipated expiration: 1938-05-24

Description

G. H. COCKS,

NUT LOCK. APPLICATION FILED SEPT, I8, [920- 1,379,394. Patented May 24, 1921.

UNITED STATES PATENT OFFICE.

GEORGE nomvrns cocks, or ADRIAN, MICHIGAN.

nor-Look.

To all whom it may concern:

Be it known that I, Gnonen l ionirns Cooks, a citizen of the United States, re.- siding at Adrian, in the county of Lenawee and State of Michigan, have invented certain new and useful Improvements in Nut- Locks, of which the following is a specification, reference being had tov the accompanying drawings.

This invention relates to nut locks, and

particularly to that class of nut locks wherein a key is disposed within a key seat formed in the bolt and engages the nut to prevent the accidental removal of the nut unless the key be withdrawn. V

The general object of my invention is to provide a very simple and cheaply constructed nut lock which may be used with standard bolts and nuts and requires no special construction of the nut or of the bolt other than the formation of the ordinary key seat in the bolt.

A further object is to provide a nut lock of this character in which the key has a long bearing against the sides of the key seat and in which the key or look may be readily removed or replaced and used a large number of times without any injury to the nut lock or to the bolt and nut.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is an elevation of a shaft and nut with my nut lock applied thereto;

Fig. 2 is a sectional view through the shaft and nut showing my nut lock applied thereto;

Fig. 3 is an end elevation of the shaft, nut and nut lock;

Fig. 4 is a side elevation of the nut lock.

In these drawings, 10 designates a bolt, shaft or like member which is screwthreaded with standard threads 11 and which is formed with a longitudinally extending key seat 12, the nut 13 being of ordinary form.

The key or look is designated generally 15 and is made of spring steel. This member 15 is bent so as to form a portion 16 which extends approximately parallel to the axis of the bolt when the device is in use, the clip 15 being then bent around and overhanging this portion 16, as at 17. The portion 16 is corrugated or bent so as to form a section of a screw-thread corresponding in Specification of Letters Patent. Patented :M 24 1921 Application filed September 18, 1920. Serial 411,241.

that there is a standard of threads for each size nut. Thus a a! nut 16 threads to the inch, a it nut 13 threads to the inch, a 5- not 11 threads to the inch, a i nut 10 threads to the inch, and so on. The sizes of the key seat in the shaft or like member are standard for different sizes of shafts. Thus for a 1 shaft, the key seat is and, therefore, the key 15 for a 1 nut would have a width of and 8 threads to the inch, which are standard for 1 nuts, and so on, the width of the key and the number of threads to the inch varying with the sized nut to be used and the sized key which is used.

In the use of this device, the nut is placed ened up. The spring clip or key is then slid into the key seat and the corrugated portion 15 will slide over the thread on the nut left bare by the key seat. l/Vhen the arm 17 of the key engages the side face of the nut 14;, the resilience of the spring metal key will cause the notches or corrugation in the portion 16 to fit into and engage with the thread of the nut. Thus the clip or key is held from sliding off the shaft and nut by the corrugation at one end of the key. Thus the key is held in such engagement with the nut that if the nut 13 is to turn, the edge of portion 16 upon the shaft or other member 10 and tightof the key will bear against the side wall of the key seat while the other edge will bite into the nut threads and the nut will be held from turning. hen it is desired to remove the nut or release it, it is only necessary to pull out forcibly on the clip or key, whereupon the arm 17 will slide off of the face 14 and the part 16 will free itself from the beveled threads in the nut and the clip is removed. Then the nut may be unscrewed. It is obvious that this clip or key may be insorted and replaced any number of times without injury. It will also be seen that the nut does not ave to be turned around to a certain definite place to lock the nut, but that one-sixth of a turn, where the nut is hexagonal, will lock the nut.

It will be noted that the key has a relatively long bearing against the sides of the nut. the portion inserted within the key having corrugations approximately fitting thethreads of the nut, the resilience of the key when in place screw-threaded member having a longitudinally extendingkey seat, of a key for the nut comprising a strip of resilient metal bent upon itself to provide a portion adapted to be inserted. in said key seat, and a portion adapted to bear upon the outside face of the seat causing this corrugated portion to bear against the threads of the nut. r

2. The combination with a screw-threaded member having a longitudinally extending key seat and a nut engaging the screw- 7 threaded member, of a locking device for the nut comprising a strip of resilient metal bent upon itself to provide a portion adapted to extend along the key seat and having a width approximately the same as the key seat and corrugated to fit the threads of the nut, and a resilient portion adapted to extend over and engage theouter face of the nut, the two portions being urged toward each other to resiliently grip againstthe inner and outer. faces of the nut by the resilience of the material from which the locking device is made. v a

3. A locking devicerfor nuts comprising a strip of resilient metal bent to provide a portion adapted to be inserted within a key seat formed in a screw-threaded member,

and a portion adapted to engage upon the exteriorface of a nut, said first-named portion being formed with a plurality of corrugations adapted to fit the threads of a nut and said portions being urged toward each other by the resilience of the metal from which the locking device is made. 7 r V In testimony whereof I hereunto afiir; my

signature. 7 a l e GEORGE HOLMES COCKS.