US1153649A - Nut-lock. - Google Patents

Description

J. M. ER.

NUT

APPLICATI .31. 1914- 1,153,649, Patented Sept. 14, 1915.

ICE.

JOHN M. SCANNER, 0F KINGSVILLE, MISSOURI.

NUT-LOCK.

Specification of Letters Patent.

Patented Sept. 14, 1.615.

Application filed August 31, 1914. Serial No. 859,533.

To all whom it may concern:

Be it known that I, JOHN M. TANNER, a citizen of the United States, residing at Kingsville, in the county of Johnson and State of Missouri, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to nut locks and more particularly to that class of nut locks in which a key is provided, said key being carried by the nut and adapted for positive engagement with the bolt to prevent rotation of the nut thereon.

The object of my invention is to provide a nut lock of the above described character which shall be simple in construction, cheap to manufacture and one which is positive in operation.

With the above and other objects in wow my invention resides in the construction combination and arrangement of the parts as hereinafter set forth in the specification and illustrated in the accompanying drawings, in which Figure 1 is a perspective View of a bolt and nut showing my improved locking device attached thereto. Fig. 2 is a top plan view of the same showing the key in engagement with the bolt. Fig. 3 is a sectional view taken on the line 33 of Fig. 2 looking in the direction of the arrows. Fig. 4 is a fragmentary sectional view showing the manner in which the key is secured to the nut.

Similar reference characters indicate similar parts throughout the various views of the drawings.

Referring more particularly to the drawings in which the preferred embodiment of my invention is illustrated, the numeral 1 indicates a bolt of the usual design having a head 2 on one end thereof, and a threaded portion 3 on the opposite end. The said bolt 1 is provided with a longitudinally extending keyway 4, said keyway 4 extending throughout the length of the threaded portion 3 of the bolt 1. A nut 5 of the usual character is threaded onto the bolt 1, and said nut 5 carries my improved key or locking device. In the'preferred form of my invention the locking element or key which 'I provide is formed of a single strand of of the nut 5. Carried by the nut 5 and disposed in the opening 6 I provide a locking element indicated generally by the numeral 8, the lower'end thereof being screwed or otherwise secured in the opening 6 as indicated at 9, whereby to prevent withdrawal of the said locking element 8 from the opening 6. The said locking element 8 is bent above the surface of the nut 5 as shown at 10 at substantially right angles to provide a horizontally extending portion 11, the said portion 11 being curved adjacent its outer end as indicated at 12 and adapted to embrace the threaded portion 3 of the bolt 1. The outer end of the said locking element 8 is bent inwardly as shown at 13 to engage in the keyway 4 of the bolt 1, whereby to prevent rotation of the nut upon the bolt.

When my device is manufactured it has been found desirable to form the key or locking element 8 as shown in dotted line in Fig. 2, being indicated by the numeral 14. In this view it will be noticed that the portion 12 of the key is positioned in such a manner as to not interfere with the placing of the nut on the bolt, and it has been found that it is preferable that the same be formed of some flexible material so as to facilitate the bending of the portion 13 into engagement with the keyway 4, also to engage the arcuate portion 12 with the surface or threads of the bolt 1. This provides both a positive lockand a frictional lock. The portion of the key or locking element 8 which is disposed within the opening 6 may be either loosely mounted therein for rotation or may be rigidly welded or other- Wise secured in the opening. It is preferable that the key be rigidly secured in the nut. If so desired the bolt 1 may be prevented from rotation by placing a pin, indicated in dotted lines in Fig. 1 by the numeral 15, passing through the head 2 of the bolt into the article or material being held. This vlgvilll effectively prevent the rotation of the From the above description taken in connection with the accompanying drawings it is thought that a clear and comprehensive understanding of my invention may be had, and I desire that it be understood that while I have shown and described my invention as possessing a peculiar form I may-make such changes in the detail structure thereof which do not depart from the spirit and scope of the appended claims.

Havlng thus described my invention, what I claim and desire to secure by Letters Pat ent, is

1. A nut lock, in combination with a bolt having a longitudinally extending keyWay therein and a nut on said bolt, a key for looking said nut on said bolt formed of a single strand of Wire one end thereof being secured in an opening in the nut and the opposite end of said strand of Wire being bent to form a hook member for engagement with the keyway and an intermediate portion of the key being arcuate and embracing the bolt in frictional engagement With the threads, whereby to assist in preventing rotation of the nut.

2. A nut lock, in combination with a bolt having a longitudinal keyway therein and a nut thereon, of a key formed of a single strand of wire having one'extremity thereof.

in pivotal engagement with the nut and the opposite extremity formed to provide a hook for engagement in said keyWay, the intermediate portion of said key being arcuate whereby frictional and positive engagement may be had with said bolt.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN M; TANNER.

lVitnesses JOHN TANNER, ROBERT DOBRATZ.

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

' Washington, D. C.

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