US1187713A

US1187713A - Nut-lock.

Info

Publication number: US1187713A
Application number: US5555915A
Authority: US
Inventors: Steven Benjamin Cline
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-10-12
Filing date: 1915-10-12
Publication date: 1916-06-20
Anticipated expiration: 1933-06-20

Description

S. B. CLINE.

NUT LOCK.

APPLICATION FILED OCT. 12, 1915.

1,1 W313. Patented June 20,1916.

pair P nor-Loon.

Application filed October 12, 1915.

To all whom it may concern Be it known that I, STEVEN B. CLINE, a citizen of the United States, residing at Dexter, in the county of Dallas and State of Iowa, have invented new and useful 1m provements in Nut-Locks, of which the following is a specification.

My invention relates to a nut lock, and in particular to a nut lock which will automatically lock the nut to the bolt on which it is mounted.

It is an object of this invention to construct a nut lock which may be applied to a standard nut, which is simple in construction and positive in operation, and which will automatically unlock and release the nut from the bolt when a wrench is applied to the nut for either loosening or tightening the same.

Another object of my invention is to construct a nut provided with a slot in one side thereof, in which a lock member is mounted and which is adapted to engage a longitudinal slot longwise in the threaded end of the bolt. A spring member forces the lock member into engagement with the slot in the bolt. One end of the lock member pro-- jects laterally from the side of the nut. When a wrench is applied to said nut, the projecting end of the lock member will be pushed inwardly against the tension of the spring member, thereby releasing the lock member from its engagement with the bolt, and allowing the nut to'be turned in either direction.

With these and other objects, a view which will appear as the description proceeds, my invention consists in the construction, and arrangement of parts hereinafter described and claimed.

In the accompanying drawings which form a part of this specification, I have illustrated a convenient and practical embodiment of my invention, and in which:

Figure 1 is a side elevation of the bolt to which the nut lock is to be applied. Fig. 2 is a cross-section on line 22 of Fig. 1. Fig. 3 is a perspective view of the nut lock, taken from a point above and to the left thereof. Fig. 1 is a similar view taken from a point above and to the right thereof. Fig. 5 is a horizontal cross-section of the nut lock.

taken on a plane passing through the bore in which the locking member is mounted. Figs. 6 and 7 are detailed views of the lock member and the spring member, respec- Specification of Letters Patent.

Patented June 2d, 1916.

Serial No. 55,559.

threaded end is provided with a pair of longitudinal slots 11 disposed on diametrically opposlte sides thereof.

12 denotes a standard nut provided with a threaded central opening 13 adapated to engage the threaded end of the bolt 10. In one of the lateral faces 1 of the nut, a hori- Zontal slot 15, rectangular in cross-section, is provided. The length thereof extends from a point adjacent to one of the vertical edges 16 of the nut to beyond the middle of the lateral face 14 in which said slot is located. A horizontal bore 17 extends from the slot 15 to the opposite face 28. The bore 17, as clearly shown in Fig. 5, is disposed approximately midway between the adjacent face 29 and the central opening of the nut. A bore 19 of the same diameter as the bore 17 extends from the slot 15 to the central opening of the nut.

A lock member 20 preferably made of steel wire and consisting of a long leg 21, a cross-member 22, and a short leg 23 extending parallel and in the same direction as long leg 21 is inserted in

bores

17 and 19 in such a way that the long leg will be disposed in the bore 17 and the short leg in the bore 19. The long leg 21 is somewhat longer than the bore 17 and the outer end thereof projects, as at 24, from the lateral face 28 of the nut for a short distance. The short leg 23 projects through bore 19 into the central opening of the nut. The lock member is placed in position through the slot 15. In order to insure positiv engagement of a short leg of a lock member with one of the

longitudinal slots

11, 11, of the bolt, a spring member 25 is provided which is slightly bow-shaped and whose end engage slots 26, 26, provided in the vertical side walls of the slot 15 at points intermediate the inner and outer ends of said walls. The convex face of the spring member 25 engages the cross-member 22 of the locking member and tends to press the lock member against bolt 10.

From the foregoing description, the operation of the nut lock will be easily understood. lVhen the nut lock is mounted on the threaded end of the bolt and a wrench is applied to thenut, so that one jaw will engage the face 28 from which the long leg 7 of the lock member projects, while the other jaw of the wrench will engage the face 14 of the nut in which ,the slot 15 is located, the projecting end of the lock member will be pressed inwardly against the tension of the spring 25 and the short arm of the lock member will be withdrawn from the central opening of the nut; .When in this position, the lock member is inoperative and will allow the nut to be turned on the bolt. Just as soon as the jaws of the 'wrench are removed from the nut, the spring member 25 will force the lock member against the bolt.

It is only necessary to give the nut a onehalf rotation, or less, until the short leg of the lock member engages one or the other of the longitudinal slots 11 0n the bolt, thereby positively and securely locking the nut against rotation in either direction.

It is thus seen that I have devised a nut lock which will positively engage the bolt and prevent rotation of the nut.- But, as

soon as aswrench is applied, the lock member will automatically release the nut'from the1l'ocki'ng engagement with the bolt and allow the rotation thereof in either direc- Ition. My nut lock is especially valuable in connectionwith bolts which are subject to a great deal of vibration and shock. V Itis obvious that I do not confine myself "to the specific construction of the lock nut as. shown and described. Various changes therein may be made by those skilled in the art without departing from the spirit of my invention as claimed.

I claim: I 1. A'nu't lock comprising a'bolt having a iv -threadedendprovided with'a plurality of longitudinal grooves extending the length thereof, a nut adapted to engage said threaded end, said nut being provided with a slot in one of its lateral faces, a horizontal bore extending from said slot to another lateral face of said nut, a second bore extending from said slot to the central opening of said nut, a lock member movably from the second named lateral face of the nut, the free end of the short leg extending into the central openmg in said nut, and a spring member mounted in said slot engaging the transverse member of said lock member and pressing said lock member against said bolt.

2. A nut lock comprising a bolt having a threaded end provided with a longitudinal groove, a nut adapted to engage said end, said nut being provided with a slot in one of its lateral faces, a bore extending from said slot to another lateral face of said nut, a secondbore extending from said slot to the central opening of said nut, a lock membcr movably mounted in said bores and said slot, and adapted to engage the bolt with one end and projecting from said second named lateral face ofthe nut with the other, and a spring member mounted in said slot and engaging said lock member to press the same against said bolt.

3. A nut lock comprising a bolt having a threaded end and provided with a groove, a nut adapted to engage said threaded end, said nut being provided with a slot in one of its faces, a bore extending from said slot to the central opening of the nut, a second bore extending-from said slot to a second face of said nut, a lock member movably mounted in said bores and in said slot, one end of said lock member adapted to engage the groove of said bolt, the other end of said lock member projecting from said second face of the bolt, and means in said slot for yieldingly pressing said lock member against said bolt.

In testimony whereof I have signed my name to this specification.

STEVEN BENJAMIN CELINE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. 0."