USRE14928E - Lock-nut - Google Patents

Description

F. C. WARNE.

LOCK NUT.

APPLICATION FILED MAR-15,1920.

Reissued July 27, 1920; v 14,928.

' fiederzbk C Mair/Z6 M Gkfozucx,

PATENT oFF-lcE.

FREDERICK G. WABNE, OF MANSFIELD, OHIO.

' LOCK-NUT.

Specification of Reissued Letters Patent. Reigsue'd July 27, 192() Original No. 1,272,584, dated .Tuly lG, 1918, Serial No. 144,513, filed January 25, 1917. Application for reissue filed larch 15, 1920. Serial No. 366,070.

To all whom it may concern:

Be it known that I, FRnnERroK C. WABNE, a citizen of the United States, residing at Mansfield, in the county of Richland and State of Ohio, have invented certain new and useful Improvements in Lock-Nutsyand I hereby declare the following tobe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same. p

This invention relates to an improvement in nut locks of that type wherein the locking member is formed with a projection, adapted to be forced down into a groove or channel in the bolt, to lock the parts against relative rotation. 1

In nut locks-of this type it is important thatthe locking member be so constructed and arran ed as to afford the maximum strength w en locked, without interfering with-the capability of the structure for restoring the lockin gelement to normal position for free release of the parts.

Furthermore, particularly in automobile construction, where the applied nuts are sometimes dilficult to reach, it is of importance that the nut and locking means be so.

constructed as to avoid any interference with the use of the usual wrench, ordinarily I of the socket type, in applying and removin the nut.

The main object of the resent invention,

therefore, is a provision'o a locking means.

separate froni the nut, and which has a threaded connection with the bolt, and embodies a series of more or less flexible projections or fingers, any one of which, when 1nv register with a groove or channel in the bolt, may be turned down into such channel to secure the applied parts against inde-' pendent rotative movement on the bolt. 7

The fingers. are of such length that when seated in, the channel they will be disposed at an inclination to the longitudinal plane of the bolt other than a right angle, whereimplement into the groove and, beneath the bent finger, to return said finger to'normal osition beyond the threadsof the bolt, to ree the locked parts for the unscrewing operation. The invention is illustrated in the accompanying drawings in whcih:

Figure 1 is a view, in elevation partly in nut.

section, illustrating the improved nut lock,

the locking member being shown as integral with the nut.

v Fig. 2 is a vertical sectional view illustrating the improvement and showing the nut lock member as separate from the nut.

.formed to provide an annular section 2,

having an external diameter approximately equal "to the minimum transverse external dimension of the nut, to avoid projection beyond the side surface of the nut. The bore of the projection 2 is coextensive with the bore of the nut and the surface thus provided is threaded at 3 for cooperation with the threads l of the bolt 5. Projecting from the free edge of the portion 2 are a series of fingers 6. These fingers may be in any number, more thanwtwo, though his preferred' that they be in suflicient number to permit the cooperation of..the particular one 1 with a channel 7 formed longitudinally of the bolt, in practically any position of the such fingers will be suflicient number to permit a proper seating of the nut, and operation 'of the lock, with one or the' other of said fingers in proper position for locking cooperation with the channel.

It has been found that six or eight- By the term series or plurality as 9 shown and described herein, and set forth in the attached claims, is meant three or more of such fingers and is not meant to include a locking section having only two of such locking fingers or projections.

An essential feature of the invention resides in so constructing the fingers to form free relatively inner surfaces, that is those surfaces which form a practical continuaby to permit the application of a convenient tion of the bore of the nut, are arranged beyond the threaded grooves in said bore, so that when the nut lock is applied the inner surfaces of the fingers will lie wholly beyond and entirely free from the threadsof the bolt.

The improved nut lock is constructed with a view to providing maximum strength and at the same time permitting the continued I .to the bolt, whereby they may be readily restored to normal position by an inserted tool, when desired to release the locking cooperation. Of course it is preferred that in sectional contour and size, the fingers correspond more or less accurately-with the similar dimension and shape of the channel 7, and both have'their' side wall preferably on lines corresponding to radial lines of the bolt, so that as the finger is driven into the channelthere will result a comparative wedging action, as shown more particularly in Fig. 3, to more effectively hold the finger in place.

Attention iscalled to the fact that when the finger is forced out of engagement with the channel by a suitable tool being wedged underneath the end of the finger, the line of least resistance of the finger will be at the point of the projection of the finger from the part 2, therefore the finger will be clearly withdrawn from engagement with the channel or groove without destroying, mutilating or in any way in'uringthe threads 0 the bolt, locking mem r or nut.

What is claimed as new is,

1. A nut and bolt lock, comprising a bolt having a threaded portionintersected by a longitudinally extending wedge shaped channel, and a nut having an axial cylindrical section having a threaded .bore and provided on its margin with a plurality of circularly arrangedlongitudinally extending spaced fingers surrounding and extending parallel with the threaded portion of said bolt and having outwardly inclined sides adapted to be driven into said wedge shaped channel to wedge within the latter in preventing relative movement between the bolt and nut.

2. A nut having a threaded bore, a. bolt, a cylindrical member of less external diameter than the size of the nut and having a threaded bore alinjng with and forming a continuation of the bore of the nut and a series of circularly arranged fingers projecting from the free edge of such cylindrical member and ,having their outer and inner surfaces respectively coincident with the outer surface of the cylindrical member and with the base of the threads thereof.

In testimony whereof I have aflixed my signature in the presence of two witnesses.

I FREDERICK C. WARNE.

Witnesses:

C. A. 'IIINES, N. P. HENRY.

Images