US1737497A - Hammer - Google Patents

Description

NOV. 26, 1929. w, H; G1555 1,737,497

HAMMER Filed D60. 6. 1926 Patented Nov. 26, 1929 PATENT GPH@ WILLIAM H. GIBBS, OF MILWAUKEE, WISCONSIN HAMMER Application led December 6, 1926. Serial No. 152,819.

This invention relates to hammers, and more particularly to a hammer having removable tips or striking members.

The present invention is intended more pari 5 ticularly as an improvement over the hammer disclosed in my Patent No. 1,532,135, issued to me April 7, 1925. While the hammer of my patent identilied has proved to be very satisfactory in many respects, there are some i ob-jections thereto which are overcome by the hammer of the present application. In the patented hammer, I have found by eX- tensive experience, that the handle formed of metal tubing is objectionable as it does not i have the desired give or resiliency with the result that in using the hammer the users arm and hand is subjected to undesirable jars and strains. I have also found that it Y is desirable to provide means for insuring the tight seating of the heads of the tip members against the ends oi' the body of the hammer, preventing injury to these members and insuring greater accuracy in use of the hammer.

One of the main objects of my invention is to provide a hammer of simple and inexpensive construction which will avoid the objections above noted in connection with the patented hammer, which objections also apply to other hammers oit' this type at present in use. A further object is to provide simple and efiicient means for securingl the tip members to the body of the hammer and for drawing them tightly against the ends of the body, this means also serving to etliectually secure the handle to the body. Another object is to provide simple and efficient means whereby the handle is secured to the body in such manner as to eliminate all looseness or play,

i0 this means being particularly adapted for receiving and securing the end portion of a wooden hammer handle of standard construction. Further objects will appear from the detail description.

In the drawings Figure 1 is a perspective View of the hammer;

Figure 2 is a central transverse sectional view taken substantially on line 2 2 of Figure l;

Figure 3 is a section taken substantially on line 3-3 of Figure 2, the tip members and securing screw being shown in elevation;

Figure 4L is a section taken substantially on line 4 4 of Figure 3; and

Figure 5 is a detail of one of the tip members.

The hammer includes a body of substantially barrel shape, this body being formed of two complementary sections l and 2. Each section is provided at the central portion of its inner face withy a transversely extending recess 3, this recess extending from one lateral edge of the section to within a short distance of the other edge thereof. rihese two recesses form a socket for reception of the end portion 4 of a wooden handle 4l of known construction. Each of the sections is further provided with an inwardly project ing point or spur 5 disposed to enter into the wood of portion la of handle 4i. These spurs are disposed adjacent the outer end of the handle receiving socket and remote from a securing screw 6 which passes thru portion tu of the handle t and has threaded engagement with body section 2. This screw is provided with an enlarged head 7 which tits within a recess 8 provided in section 1, the head being transversely slotted at 9 for reception oi the blade of a screw driver or other suitable tool. Preferably, a spring washer 10 is confined between head 7 and the inner end of recess 8 and serves to hold the screw 6 against reverse rotation due to ars or vibration incident to the use of the ham- The screw 6 serves to force the sections l and 2 toward each other into tight clamping engagement about the handle and to simultaneously force the spurs 5 into the handle, this screw also acting as an anchoring member to positively prevent withdrawal of the handle from the body.

This hammer is intended for use in machine shops and other establishments where a hammer provided with relatively soit striking members is desired. I have illustrated the hammer as provided with a striking or tip member 11 of lead at one end and a tip member 12 of rubber at the other end, though it is to be understood that these tip members can 1 be made of any suitable or preferred material. rI he tip members are of similar construction and each includes a head 13 of frusto-conical shape from the center of the base of which extends a reduced shank or neck 14 provided at the end thereof remote from head 13 with an annular flange 15, the outer surface of which is beveled or inclined at 16 from the periphery of the flange to neck 14.

Each section of the body is provided with an approximately semi-cylindrical recess 17 extending from its outer end centrally thereof. At its inner end this main recess communicates with a supplemental recess 18 Vof greater radius, the outer wall of which is inclined at 19 outwardly of the sect-ion toward the main recess 17. rlhis shoulder 19 contacts with the beveled surface or shoulder 1G of flange 15. It will be noted that the supplemental recess 18 is of greater width than flange 15. In assembling the hammer, section 2 is placed upon a suitable support with its inner or recessed surface directed upwardly and the tip members and handle are then placed in position with portion 4a of the handle 4 and the shanks or necks 14 .of the tip members disposed loosely in the recesses of section 2. Section 1 is then placed in position over section 2 fitting loosely about the upper portions of the necks .of the tip members and portion 4a of the handle, after which screw 6 is inserted through section 1 and the handle and is threaded into section 2. As the screw is turned into its innermost position it forces the sections of the hammer body toward each other, and the shoulders 19, due to their inclination, contact with shoulders 16 of the shanks 14 and draw the tip -members inwardly so as to dispose the bases of these members in close contact with the ends of the hammer body. Continued movement of the sections towards each other serves to tightly clamp the necks 14 of the tip members between the body sections and to tightly secure the handle in the body in the manner previously set forth. As the tip members are drawn tightly against the ends of the body all possibility of looseness .or play of these members is eliminated, which insures greater accuracy and ease in the use of the hammer and effectually prevents damage to the tip members such as results where undue looseness or play of these members is permitted. In this respect the means for drawing the tip members into tight Contact with the ends of the hammer body is of great importance and, so far as I am aware, is broadly new. Itis also to be noted that the means for drawing the tip members into contact with the hammer body and securing them therein'also serves to vsecure the handle in the body and 'anchor it against withdrawal. This 'renders it possible to quickly and easily disassemble and reassemble the hammer for replacement of tip members, which is an important consideration,

producing a hammer of very simple and highly eflicient construction.

I am aware that hammers of this general type having detachable tip members have been proposed, but such hammers are generally objectionable in that they are of rather complicated construction and do not provide satisfactory means whereby a handle of wood or other suitable resilient material may be employed. A further objection to hammers of this kind with which I am familiar is that no means is provided whereby the tip members are caused to be drawn tightly against the ends of the hammer body, the result being that in such hammers the tip members have a certain amount of undesirable play or looseness which seriously interferes with use of the hammer. I do not, therefore, intend to claim broadly the construction of a hammer of this general character except in so far as this construction of hammer cooperates with the means above described for accomplishing the desired results set forth.

What I claim is 1. In a hammer of the character described, a body formed of two complementary sections having recesses extending from their ends forming terminal sockets, tip members having elements extending into the sockets to be clamped between said sections, a handle, and a securing member extending through the sections and the handle and securing the same together, said member acting to force the sections of the body toward each other.

2. In a hammer of the character described, a body formed of two complementary sections provided in their inner faces with central transverse recesses forming a handle receiving socket, a handle extending into said socket, tip members having elements clamped between the end portions of the body sections, and a securing screw passing through one of the body sections and the handle and having threaded engagement with the other body `section for forcing said sections toward each other.

8. In a hammer of the character described, a body formed of two complementary sections provided with central transverse recesses .forming a handle receiving socket and with spur elements projecting from the inner faces lof the recesses, a wooden handle extending into said socket, tip members having elements clamped between the end portions of the body sections, and a securing screw passing through one of the body sections and the handle and having threaded engagement with the other body section for forcing said sections toward each other.

In witness whereof, I hereunto subscribe my name this 24th day of November', 1926. WILLIAM I-I. GIBBS.

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