US2525386A - Socket wrench provided with a staking or peening device - Google Patents

Description

Oct. 10, 1950 M. VAN WINKLE, JR 2,525,386

SOCKET WRENCH PROVIDED WITH A STAKING 0R PEENING DEVICE Filed Oct. 25, 1946 INVENTOR. WWW

MrW

Patented Oct. 10, 1950 SOCKET WRENCH PROVIDED WITH A STAKIN G OR PEENING DEVICE Marshall" Van Winkle, Jr., Oceanport, N. J. ApplicatiomOdtober 25, 1946,, Serial No. 705,506

1 This invention relates to a socket wrench, and particularly such a wrench in which is embodied a staking or peening device for spreading the end of a bolt or stud, to bring its threads into close engagement with the threads of a nut while the latter is still engaged by the wrench.

A further object of the invention is to provide such a wrench of simple and durable construction, adaptedfor manual or automatic operation, and in which thestaking tool is removable, replaceable and adjustable.

Another object is to provide certain improvemerits in' the form, construction and arrangement of the several parts whereby the above named and other objects may effectively be attained.

A practical embodiment of the invention; is shown in the accompanying drawings, in which:

Fig. 1 represents a vertical axial section through the wrench, nut and bolt, in the posi- Fig. 8 represents a vertical axial section, corresponding to Fig. 1, but showing a modified form of staking tool;

Fig. 9 represents a bottom plan view of the staking tool shown in Fig. 8;

Fig. 10 represents a detail axial section of the bolt of Fig. 8 before it has been staked or peened, and

Fig. 11 represents a detail axial section of the head and staking tool with a spacing washer inserted.

Referring to the drawings, a socket wrench head I is shown as having a nut-engaging socket 2 (single hex, double hex or square, as desired), and a square upper socket 3 for engagement with any suitable manual or automatic turning means, the squared end of the latter being shown at 4. Above the socket 2 the head is provided with a cylindrical recess 5, which may be threaded as shown, having a diameter no greater than the minimum diameter of the 5 Claims. (01. s1-10) socket 2, and terminating upwardly in the shoulder 6.

The staking tool] is shown as a cylindrical piece of steel, threaded to screw into the recess 5, and having a punch 8 of suitable formprojecting-downwardly from the middle of the-tool. The punch shown in Figs. 1,.3 and 4 is in the shape of a cone having relatively steep sides and a somewhat flatter point. The height of the tool I from the point of the punch to the upper surface of the tool is conveniently approximately equal to, or less than, the depth-of the recess 5. The upper surface of the tool is provided with a kerf 9 to receive the end of a screw-driver for inserting, removing or adjusting the tool.. In some cases the tool may engage the recess 5 only with a friction fit instead. of threads, and the kerf 9 is then omitted.

A modified form of staking tool It! is shown in Figs.,6 and '7, in which the punch II is in the form of a wide frusto-conic projection, hollowed out to leave an annular working edge I2 having a, diameter somewhat less than the minor diameter of the bolt in connection with which the tool is used.

Another modified form of tool I3 is shown in Figs. 8 and 9, wherein the punch I 4 is frustoconic and of approximately the same size as the punch 8, although its sides need not be so steep.

The punches of Figs. 1 and 6 are intended for use in connection with an ordinary bolt I5 having the form shown in Fig. 5 or being slightly rounded. The punch of Figs. 8 and 9 is intended to be used with a specially prepared bolt 88, shown in Fig. 10, having a cylindrical or tapered depression ll formed in its end.

In operation, the wrench head and stakin tool are assembled as shown and mounted on a suit able turning device. The socket 2 is used to screw home the nut I8 against the work !9, and when the nut has been tightened to the desired degree the head is subjected to a blow or series of blows to drive the punch into the end of the bolt, spreading it. and locking the nut against displacement. Such a lock is particularly desirable in cases where permanence of the fastening is of primary importance, but the expansion can, if necessary, be so controlled as to permit non-destructive removal of the nut in other cases. Since the staking force is directed axially of the bolt, it is evident that, by backing up the bolt with a suitable anvil, the bolt may be axially compressed to tighten the fastening at the same Ji $1. $1.1? end is staked. The same effect can 3 be obtained, without an anvil, if a stud is used instead of a bolt.

In any given assembly line bolting operation the bolts used are normally of approximately uniform length and/or are designed to extend a uniform distance above the work and above the top of the nuts when the latter are screwed home; the latter distance generally being from 3% to The wrench head shown herein must be so proportioned that the socket 2 can maintain adequate engagement with the nut throughout the turning operation, even after the punch has made contact with the end of the bolt (or stud), and there must also be sufiicient clearance between the bottom of the socket and the work surface so that the wrench head can move downwardly as the punch is driven into the bolt. Adjustment of the wrench head to fit the particular requirements of a given operation is effected by moving the staking tool up or down in a recess 5 in which it is preferablythreaded. When the tool is to be held in a position spaced from the shoulder 6, such adjustment can be accurately maintained by inserting one or more spacers or washers 20 or the like, of appropriate thickness, between the shoulder 6 and the top of the tool, as shown in Fig. 11, so that the latter cannot back off from its adjusted position and so that the staking load need not be carried by the threads.

The punch need not be in the forms or location shown but may be positioned eccentrically or may be divided so as to make a plurality of indentations, but in each case it is maintained in accurate alinement with-thebolt'endbecause of the continued engagement of the socket z withithe nut, and uniformity of operation is thus assured.

A socket wrench having points of similarity to that disclosed herein but designed to effect staking of the nut forms the subject of my concurrently filed application, Serial No. 705,505;

It will be understood that various changes may be resorted to in the construction, formand arrangement of the several parts without departing from the spirit and scope of my invention,

4 and hence I do not intend to be limited to the particular embodiment herein shown and described, but What I claim is:

1. A socket wrench head comprising, a lower socket adapted to surround and engage the sides of a nut, an upper socket adapted to engage the end of a driving device, a cylindrical recess communicating with said lower socket and having a diameter no greater than the minor diameter of the socket, and a staking tool fitted in said recess and provided with a downwardly projecting punch adapted to engage the end of a bolt on which the nut is screwed, said recess and staking tool being screw-threaded.

2. A socket wrench head according to claim 1 in which the recess communicates also with the upper socket and in which the top of the staking 'tool is shaped to engage the end of a turning tool, whereby the position of the staking tool in the recess may be adjusted.

3. A socket wrench head according to claim 1 in which the punch is substantially conical.

4. A socket wrench head according to claim 1 in which the punch includes an annular working edge.

5. A socket wrench head according to claim 1 in which the punch is frusto-conical. I

MARSHALL VAN WINKLE, JR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 864,486 Parsons Aug. 27, 1907 1,091,925 Ganderton Mar. 31, 1914 1,300,207 Williams Apr. 8, 1919 1,925,714 Crist Sept. 5, 1933 2,318,270 Wagoner May 4, 1943 FOREIGN PATENTS Number Country Date 544,265 Great Britain Apr. 3, 1942

Images