US1739410A

US1739410A - Lock nut

Info

Publication number: US1739410A
Application number: US245565A
Authority: US
Inventors: Murphy Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-01-09
Filing date: 1928-01-09
Publication date: 1929-12-10
Anticipated expiration: 1946-12-10

Description

Dec. l0, 1929. c. MURPHY Mmm E @sl-unl Patented Dec.- l0, 1929 UNITED STATES CHARLES MURPHY, or LITTLETN, .WEST VIRGINIA Loox Nur l Application med January s, 192s.'y serrant. 245,565.

' This invention relates to lock nuts, and its general object is to providea bolt including a nut that is normally retained in arposition whereby it can be threaded on and off of its bolt by a wrench or t-he like, or can be secured against movement in either direction.

A further object of the invention is to provide a lock nut that is positive in function, simple in construction, inexpensive to manufacture and efficient in operation and service.

This invention also consists in certain other features of construct-ion and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a fragmentary side elevation of a bolt and nut constructed in accordance v with my invention.

Figure 2 is a top plan view thereof.

Figure 3 is a horizontal sectional view taken through the bolt and nut and showing the locking mechanism thereof in open position,

Figure 4 is a similar view with the parts in locked position.

Figure 5 is a perspective view of the latch member.

Figure 6 is a similar view of the cam lever.

Referring to the drawings in detail, the reference numeral 1 indicates a bolt which as shown is provided with threads 2 interrupted at .spaced intervals by rows of substantially V-shaped recesses 3. The rows of 4 recesses extend longitudinally of the bolt as shown.

The nut which is indicated by the reference numeral 4 is shown as being hexagon in shape,

but of course it can be of any desired shape,

r and formed in the nut in a manner to extend from one flat surface thereof and terminating at the inner portion is a slot 5 provided with inwardly disposed curved side walls as best shown in Figure 3.

5 Pivotally secured through the medium of apin 6 and disposed -in the slot 5 is a latch member 7 "formed with a -recessat its secured end to `accommodate 'a coil spring` 8 carried by the' pinv andhavingfits'end convolutions engaging the adjacent sidewall of the slot andthe latch'member respectively for the purpose 'of retaining the ylatch member normally in unlatched posit-ion as shown in Figure 3. Theside wall of the slot that receives the end convolution ofthe spring is notched 0 for thatpurposel soas to avoid casual displacement of thefsprngas will be apparent.

In orderto operatethelatch member to its operative position" as shown in Figure 4, I have provided a lever 9 pivotally secured in 65 the slot through the medium of a pin 10 and said lever is formed with a cam surface for engagement with the latch to secure the free end of the latter into some of the recesses ofV one of the rows so as to prevent movement'of the nut in either direction as will be apparent.

The lever 9 may be held in either of its positions as shown in Figures 3 and 4 through the medium of a pin 11 adapted torbe detachably received in either one of openings arranged in-cooperating pairs and indicating respectively by the

reference numerals

12 and 13. The openings' 12 and 13 are formed in the top and lbottom walls of the slot and extend entirely through the top wall so that the pin 11 can lbe inserted in the openings as set forth.

From the above description and disclosure .of the drawings, it will be obvious that I have provided a bolt and nut cooperating with each other in a manner whereby the nut can be locked at any desired position on the bolt to prevent movement of the nut in either direction, or if desired the latch can be retained in its normal position as shown in Figure 3, so as to allow free movement of the nut.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several part-s, provided that such changes fall within the scope of the appended claim.

l What I claim is:

In a lock nut, a threaded bolt having recesses interrupting the threads thereof and extending longitudinally of the bolt, a nut for said bolt and being provided with a slot laterally forifned therein and having `rounded Walls curved int-o the bore of the'nut, a pivoted latch arranged in said slot and adapted to he received in the recesses topreven't rrlv-y ment of said nut on said bolt, said latch having a recess formed in its secured end, a coi spring received by ther-pivot ofthe latchfand having its ends engageable with a Wall of the recess of the latch and-one wall'of the slot to put lthe latch under; pressure to held it out of the recesses `of the holt; Said last mentioned Wall being notched to receive its end ofthe spring, a lever pivoted in said slot and having a cam yface engageable with the latch for-moving. theV same to itsoperative position in the recesses of the bolt, and aI pin adapted to be arranged in ang,r one'V apair of Openings disposed lthrough the Walls of the slot and the nut orsecuringy said lever infnorinal or operative 'position'.I

In rtestimony wh ereof I` aix .msi nature.

CHARLES Rl HY.