US2317862A - Rawhide hammer insert - Google Patents

Description

.April 27, 1943. 'MQ R. STEVENS 2,317,862

` RAWHIDE HAMMER INSERT v Filed sept. '25,' 1941 2 sheets-sheet 2 @amm Ame-.5: man

regl@ mmagfzzm @umm INVENTOR ATTORNEY Patented Apr. 27, 1943 UNBTED STATES "PATENT oFslCE 2,317,862 RAWHIDE HAMMER INSERT Myles R. Stevens, New Marlboro, Mass.

Application September 25, 1941, Serial No. 412,309 v "1 clainil (CL 145-36 This invention relates to machinists hammers, and more particularly to a soft-faced metalstriking hammer having laminated rawhide inserts at both ends of the head thereof.

One object of this invention is to provide a laminated hammer insert 0f the above nature comprising a series of superposed rawhide discs connected together by glue and reinforced by rawhide pins extending through the entire series of discs.

Another object of this invention is to provide a rawhide insert for a hammer in which the striking face thereof is strengthened by reason of the fact that the grain side of the rawhide is located on the outer surface thereof.

A further object is to provide a device of the above nature, which will be simple in construction, inexpensive to manufacture, non-scratching, easy to install and manipulate, ornamental in appearance, and very eiiicient and durable in use.

With these and other objects in View, there have been illustrated on the accompanying drawings two forms in which the invention may be conveniently embodied in practice.

In the drawings:

Figure 1 represents a perspective view of a metal-striking hammer having a pair of improved rawhide inserts installed therein.

Figure 2 is a side view of the to-part hammer head as it appears with the inserts in assembled position and with the handle removed.

Figure 3 is a longitudinal sectional view of the same, with the handle shown in operating position.

Figure 4 is a side view of a maul having a modified form of rawhide insert of tubular form assembled thereon.

Figure 5 is a longitudinal sectional view of the same.

One advantage of the present form of laminated rawhide hammer insert over the previous forms which were made by spirally winding a strip of rawhide, is that the ends of the insert will remain flat at all times without curling up.

A further advantage is that the absence of metal pins or attaching parts positively prevents injury to the work on which the hammer is used.

Referring now to the drawings in which like reference numerals denote corresponding parts throughout the several views, the numeral HI indicates a wooden handle cf standard construction which is adapted to be inserted within a barrelshaped two-part hammer head consisting of a male member II and a female member I8.

The male member II is provided with a sub-'f stantially semi-cylindrical end section I2 having a pairv of opposed half sockets I3, I3 on opposite sides thereof. The male member II lis, also provided with a i'lat inner surface I3a'from which extends a reduced cylindrical rear 'shank I4 having an interior elliptical handle receiving passage I5 anda threaded inner extremity I6 adapted to receive a nut I'I, as clearly shown in Figure 3.

In order to hold the handle I0 securely in position within the male member II, provision is made of a transverse metal pin 2| extending through the handle III and having its ends fitted within the shank I4 at a point forward of the threaded portion thereof. To facilitate the removal of the pin 2|, one end thereof may be provided with a slot or kerf 22.

The female member I8 is provided with a cylindrical passage I9, which iits freely about the shank I4, and said passage I9 terminates in an outstanding rear rim ISa. As in the case of the male member Il, the female member I8 is provided With a pair of opposed half sockets 20, 20 cooperating with the half sockets I3, I3 for clamping about the opposite sides of a pair of rawhide inserts 23,Y 23, which are preferably slightly tapered and conical in shape.

Each of the inserts 23 is formed by superposing a plurality of circular discs 24 in a pile, drilling perforations 25 longitudinally therethrough, and then forcing a plurality of rawhide pins 26 into said perforations, said pins being initially slightly longer than the height of the pile of discs. As shown in Figures 1 and 3, one of said pins 2S will be located in the center of the discs, while the remaining pins 26 will be spaced outwardly therefrom and concentric therewith.

To complete the manufacture of the laminated inserts, the rawhide discs and pins will be secured together by glue or cement and the entire pile of discs placed in a ten-ton hydraulic press to head over the opposite ends of said pins 26 and consolidate the parts and produce the desired conical shape thereof.

In the modiiied form of the invention, shown in Figures 4 and 5, the numeral 21 indicates a metal handle of a maul, said handle being bulged shoulder 30 at its rear end; the section 29 has a threaded extremity 3| for receiving a small locking nut 32, as shown in Figure 8.

In this form of the invention, the insert is made from a plurality of rawhide rings 33, each of said rings having a central aperture 34 shaped to t snugly upon the reduced forward section 29 of the metal handle. As with the discs 24 of the first form of the invention, the rings 33 are adapted to be secured together by non-metallic means consisting of a plurality of rawhide pins 35 spaced outwardly from and concentric with the reduced forward section 29 of the handle 21. The rawhide pins 35 are fitted within apertures 36 formed in the pile of superposed rings 33 as shown inv Figure 5.

The rawhide rings and pins of the second form of the invention are preferably glued together,v

step in the process of manufacturing both forms of inserts is to coat said inserts with a waterresisting finish, such as shellac.

While there have been disclosed in this speication two forms in which the invention may be embodied, it is to be understood that these forms are shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosures, but; may be modied and embodied in various other forms without departing from its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claim.

Having thus fully described the invention, what is claimed as new and for which it is desired to secure Letters Patent is:

A soft-faced insert for a machinists hammer comprising a stack of thin rawhide disks permanently glued together in superposed rela- Altionship, said insert being reinforced by a plurality of non-scratching rawhide rivet pins passing longitudinally therethrough and having their ends enlarged and headed over ush with the faces of said insert, said insert being held in compressed compact form by said rawhide pins.

MYLES R. STEVENS.

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