US2001868A - Hammer - Google Patents

Description

May 21, 1935- M. 1.. CRANDALL 2,001,868

HAMMER Filed March 31, 1934 l l I l l I Nerfan L. Cranc/afl operation is as follows: The slot 5 of the claw 3' Patented May 21, 1935 PATENT OFFICE HAMMER Merton L. Crandall, Jackson, .Mich.

Application March 31,

2 Claims.

This invention relates to a hammer and more particularly to a claw hammer provided with an attachment for facilitating the pulling of nails therewith.

The claw of the usual hammer now in use is adapted for pulling, but little consideration has been given to the specific manner in which the nails are pulled. Nails pulled with the present claw hammer are bent so that they are unfit for subsequent use. This invention resides in providing an attachment to claw hammers which will pull without bending the majority of the nails on which it is used.

An object of this invention is to provide a hammer which will easily pull nails without bending them.

Another object of this invention is to provide a claw hammer with a roller supported in spaced relation to the claw in such a manner that as a nail is pulled the roller approaches the nail.

These and other objects will be apparent from the following specification when taken withv the accompanying drawing in which Fig. 1 is a side elevation of a claw hammer embodying this invention,

Fig. 2is an end elevation of the same, and Figs. 3 and 4 are side elevations showing successive views of a hammer provided with this invention, in operation. 1

Referring to the drawing the hammer is provided with a head I, having a striking face 2, the usual claw 3 and a handle 4. The claw 3 is provided with the usual nail engaging tapered slot 5. The improvement which comprises this invention is the protuberance 6 having ears 1 between which is disposed the roller 8 pivotally mounted on a pin 9. The protuberance 6 may be either an integral part of the head I or secured thereto in some suitable manner. As shown in the drawing the pin 9 constitutes a fulcrum for the head I of the hammer when it is used in drawing nails.

Referring particularly to Figs. 3 and 4 the hammer is shown in successive positions in the act of drawing a nail ID from the block II. The

is moved into surrounding engagement with the nail ill, the head thereof bearing against the in- 1934, Serial No; 718,398 01. 4 26) side face of the claw 3. After the handle is lifted to swing the hammer about the 'pin 9 to pull the nail III the roller 8 moves along the block H toward the nail l0 shortening the distance therebetween. The result is that as the hammer is rocked-to extract the nail the moving of the roller 8 toward the nail minimizes the lateral strain which tends to bend the nail. j

A further advantage of the construction is that the distance between the throat of the slot 10 5 and the point about which the hammer head fulcrumsis greater than in usual constructions resulting in a greater leverage than is normally obtained, whereby less force is required to extract the nail.

While the specification describes a single em- .bodiment of the invention it is within its contemplation that it include such modifications as would occur to one skilled in the art and. I therefore do not wish to be limited except by the scope 20 of the following claims. v

I claim:

1. A hand hammer comprising a head having a striking face and a nail pulling claw, a protuberance having outwardly extending ears dis- 25 posed on said head between said face and said claw, the outer surface of said claw adjacent the tip thereof being curvilinear and constituting a rocking fulcrum during the initial nail pulling operation, a roller mounted between said ears for rotation, said protuberance and roller being disposed to one side of a plane tangential to said surface, said roller constituting a rolling fulcrum during the final nail pulling operation.

2. A hand hammer comprising a head having a striking face and a nail pulling claw, a protuberance disposed on said head between said face and said claw, the outer surface of said claw adjacent the tip thereof being curvilinear and constituting a rocking fulcrum during the initial nail pulling operation, a roller mounted upon said protuberance for rotation, said protuberance and roller being disposed on one side of a plane tangential to said surface, said roller constituting a rolling fulcrum during the final nail pulling operation. V

, MERTON L. CRANDALL.

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