US980218A - Nut-lock. - Google Patents

Description

LAWSON H. DOWELL, 0F ATHENS, TEXAS.

NUT-LOCK.

Specification of Letters Patent.

Patented Jan. 3, 1911.

Application filed April 9, 1909, Serial No. 488,872. Renewed November 22, 1910. Serial No. 593,722.

To all whom it may concern:

Be it known that I, LAWSON I-I. DownLL, a citizen of the United States, residing at Athens, in the county of Henderson and State of Texas, have invented a new and useful Nut-Lock, of which the following is a specification.

The objects of the invent-ion are, generally, the provision, in a merchantable form, of a device of the class above specified, which shall be inexpensive to manufacture, facile in operation, and devoid of complicated parts; specifically, the provision of a locking key adapted to be assembled with the bolt and nut in a novel manner, and of a washer ada ted to receive the terminal of the locking rey, to deflect the same .into locking relation with the washer; other and further objects being' made manifest hereinafter as the description of the invention progresses.

The invention consists in the novell construction and arrangement of parts hereinafter described, delineated in the accompanying drawings and particularly pointed out in that portion of this instrument wherein patentable novelty is claimed for certain distinctive and peculiar features of the device, .it being understood that within the scope of what hereinafter is thus claimed, divers changes in the form, proportions, size and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

Similar numerals of reference are employed to denote corresponding parts throughout the several figures of the drawings.

In the accompanying drawings Figures 1 and 2 are longitudinal sections of the device, the locking key in Fig. 1 being about to enter the channel in the washer, and, in Fig. 2, being entered in said channel; Fig. 3 is a transverse section of the device; Fig. 4 is a detail perspective of the locking key; Fig. 5 is a detail perspective of the washer.

In the accompanying drawings the numeral 1 denotes a bolt, threaded .in the usual manner, and provided with a nut 2, adapted to engage the thread of said bolt.

The numeral 3 denotes a washer arranged to fit the bolt 1, and provided with a shoulder 5, inwardly extending, to register slidably in a longitudinally disposed, superficial groove 4 in the bolt 1. The outer face of the shoulder 5 is beveled, as denoted by the numeral 6, and this beveled portion 6 is provided with a slot 7, which, at the point where the shoulder merges into the washer 3, is extended outwardly, to form a radial channel 8 in the face of the washer 3.

The locking key 11 is made to taper slightly at one end, as clearly shown in Fig. 4, and is brought to a point, as denoted by the numeral 10. In transverse section the locking key 11 may be made to ta :e a variety of forms, each of which is effective to the end sought. In the present instance, the said locking key, in transverse section, takes the form of a right triangle, whereby is formed, at the outer edge of the locking key, a cutting element 9.

In practical operation, after the nut 2 has been rotated to the desired position upon the bolt 1, the locking key 11 is inserted into the longitudinally dis osed groove 4 in the face of the bolt, the pointed terminal 10 of the locking key serving to facilitate such insertion. The locking key 11 is then driven inward, the edge 9 of the locking key cutting a seat for the key transversely, in the threads of the nut 2. Continued terminal malleation of the locking key will cause the pointed terminal 10 thereof to engage the beveled face 6 of the shoulder 5, traversing the slot 7 in such beveled portion. The extremity of the locking key will eventually be deflected into the radial channel 8 .in the washer 3, firmly wed ing the said pointed portion 10 of the loc ring key between the washer and the nut.

It will be seen that in the application of the device no special form of nut is called for, the locking key cutting its own seat in the threads of the nut, when the key is inserted into the groove 4 of the bolt. The nut and bolt will, by the above described operation, be securely coupled together, and this union between the bolt and nut 1s further strengthened by the fact that the pointed end 10 of the locking key is deflected radially into the channel 8 of the washer 3 and rigidly secured between the washer an the nut. If, after continued usage, the key 11 should work slightly loose in the nut 2, the said key will not drop from the groove 4 or work out of the same, owing to the fact, that, as hereinbefore pointed out, the extrernty of the locking key is over-turned into the channel 8 of the washer. The key CIA will therefore be retained in position, and a tap or t-wo with a hammer upon the terminal of the key will be suilicient again to lock the bol-t and the nut together. The bolt and nut are coupled not only by the en gagement between the edge of the locking key and the threaded portion of the nut, but as well by the wedging eifect of the pointed terminal 10 of the key, which is inserted into the radial channel 8 in the washer, between the said washer and the said nut.

In the application of my invention, it is unnecessary to rotate the nut to the slightest degree, in order that the locking key may be inserted. When the nut is in the desired position the key may be inserted, cutting its own seat in the nut, and locking the nut l in the exact position to which it previously has been rotated.

I-Iaving described my invention, what I claim as new, and desire4 to protect, by Letters Patent, is

l. In a device of the class described, a bolt having a longitudinal groove; a washer to t the bolt and having a shoulder beveledy upon its upper face and arranged to register in the groove; a nut mounted on the bolt; a key arranged for insertion in the groove, and to cut, transversely, the threads of the nut, the terminal of the key being arran ed to engage the beveled face of the shoul er, to deflect the terminal of the key into locking engagement with the nut.

2. In a tdevice of t-he class described, a bolt having a longitudinal groove, a washer to tit the bolt and having a shoulder to engage the groove, the shoulder on its outer face being beveled, and slotted; a nut on t-he bolt; a key arranged for insertion A into the groove to engage the nut against rotation, the terminal of the key being arranged to engage the shoulder and to be deilected thereby into the channel in the washer.

4. In a device of the class described, a i.

bolt having a longitudinal, superiicial groove; a washer having a shoulder to it the groove, the shoulder being beveled on its outer face and slotted in its beveled portion, the 'washer being provided with a radial channel opposite the shoulder; a nut mounted upon the bolt; a key arranged for insertion into the groove of the bolt, the

terminal of the key being arranged to travel the slot in the inclined face of the shoulder, to deflect the terminal of the key into the radial channel of the washer.

In testimony that I claim the foregoing as my own, I have hereto aliiXed my sign nature in the presence of two witnesses.

LAWSON H. DOVELL.

Vitnesses:

I/V. R. BISHOP, EARL JONES.

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