US1415948A - Hand grip for files - Google Patents

Description

I. L. OSGOUD.

HAND GRIP FOR FILES.

APPLICATION FILED FEB,16. I92].

1 ,4 1 5,948 Patented il-y 16, 1922 Eye.

Xa 5%?L ATTO/P/VEKE JOHN L. OSGOOD, 0F BUFFALO, NEW YORK.

HAND GRIP non FILES.

Application filed February 16, 1921.

at this end of the file a comfortable hearing or part for the hand to grasp or bear upon during the use of the file. Files are ordinarily provided with handles at their rear or heel ends adapted to be grasped in the hand, but it is customary when filing a surface, in order to guide and hold the file steady with the required cutting pressure, for the operator to grasp the handle in one hand and grasp or bear upon the unhandled front end of the file with the other hand. This is very tiresome to the hand and produces soreness, owing to the roughness of the file and the cramped position of the hand inquired, if the small end of the tile is grasped .in the hand.

The object of this invention is to provide a practical, desirable and durable but very simple and inexpensive hand grip or holding device adapted to be readily placed on. the handleless front ends of tiles to furnish a comfortable and convenient grip or hearing for the hand.

In the accompanying drawings:

Fig. 1 is a plan view of a file having a hand grip embodying the invention on the front end thereof.

Fig. 2 is a perspective view of the hand grip detached.

Fig. 3 is a sectional plan view of the hand grip, showing the end of the file in place therein.

Fig. 4 a similar view of the hand grip detached.

Fig. 5 is section on line 5-5, Fig. 3.

A. represents a file of ordinary construe .tion provided with the usual handle B at the rear or heel end of the file.

(1 represents the hand grip or hearing on the other or front end of the file. This hand grip is made of a shape and material such as to form a comfortable grip or hearing for the hand while holding the front end of the file, so that the front end of the file can be held firmly or steadily and pressed to the work with the required pressure with-- Specification of Letters Patent.

Iatented May 16, 19.232.

Serial No. 44:5,343.

out discomfort to the hand or arm. The hand grip is preferably made of suitable material, such as ritlbber, which is somewhat elastic or yielding and affords a yielding bearing for the hand, and also has a surface which will minimize the liability of the slipping of the grip in the hand. As shown in the drawing, the hand grip is made with an enlarged. head (Z and a contracted, projecting neck 6 forming external trans use shoulders adapted to be engaged. by the hand of an ope ator. Preferably the head is elongatedtransversely of the file and is of substantially elliptical, sectional shape in this direction, and of substantially circular section crosswise of the major axis of the head. The hand grip is provided with a deep, narrow socket or cavity f, which extends through the neck 6, well. into or nearly through the body of the head beyond the external transverse shoulders. Into this socket, the toe end of the file is adapted to be shoved for securing the hand grip on the file. This socket of substantially the crosssectional shape oi the tile with which the hand grip to be used, but is preferably of slightly smaller transverse di1nensions, so that when forcing the grip onto the file, the latter will stretch or expand the walls of the socket sufficiently to insure of the hand grip being firmly retained 011 the file by the elasticity of the walls of the socket and, the frictional contact between the same and the faces of the file.

By making the hand. grip of rubber or analogous material having snflicient elasticity, the same grip is adapted for use on files which differ somewhat in size, it being thus necessary to furnish grips only in a few sizes, which are adapted for the several different sizes of files most connnonly used. The hand grip thus formed can be molded in a single piece, and no additional fastening device or part is necessary in order to securely retain the grip on the file. Since the file socket or cavity in the hand. grip extends throngh the neck, well into the head and preferably nearly to the far side of the head, the grip will be held rigid with the file and prevented from play or movement relatively to the neck, which would occur and cause the head to sooner or later break from the neck if the socket extended only through the relatively contracted neck of the hand grip. A hand grip of the sort de scribed on the toe end of the file also serves to prevent the file from being broken if it is dropped or carelessly thrown down on the Work bench or other object. The hand grip can be readily pulled off of one file and secured on another.

I claim as my invention:

1. A hand grip for the unhandled front ends of files, comprising a resilient body having an external transverse shoulder which is adapted to bear against the hand of an operator, said hand grip having a socket which extends into said body beyond said shoulder and which is adapted to receive the end of a file.

2. A hand grip for the unhandled front ends of files, consisting of a rubber knob provided with a socket adapted to receive the end of the file, said socket being proportioned so that it is stretched by forcing the file into the socket and retains the hand grip on the file by the elasticity of the walls of the Socket, the dimension of said knob transversely of the file being relatively great as compared with its dimension lengthwise of the file.

3. A hand grip for the unhandled front ends of files, consisting of a rubber body having a knob-like head and a contracted neck, said hand grip having a socket which extends through said neck well into the head and is proportioned so that, it is stretched by forcing the end of the file into the socket and retains the hand grip on the file by the elasticity of the walls of the socket.

4. A hand grip for the unhandled front ends of files, consisting of a rubber body having a knob-like head which is of greatest dimension transversely of the file and a contracted neck pro ecting from one long side of the head, said hand grip having a socket which extends through said neck well into the head and is proportioned so that it is stretched by forcing the end of the file into the socket and retains the hand grip on the file by the elasticity of the walls of the socket.

Witness my hand this 12th day of Febru ary 1921.

JOHN L. oso-oon.

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