US2799185A

US2799185A - File guide

Info

Publication number: US2799185A
Application number: US375657A
Authority: US
Inventors: Eino J Abramson
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-08-21
Filing date: 1953-08-21
Publication date: 1957-07-16
Anticipated expiration: 1974-07-16

Description

July 16, 1 957 E. .1. ABRAMsoN 2,799,135

FILE GUIDE F lled Aug.. 21, 1953- 1 mmvron.

Eina J.'Abramson United States Patent 1 2,799,185 FILE GUIDE Eino J. Abramson, Cloverdale, Ala. Application August 21, 1953, Serial No. 375,657 3 Claims. (CI. 76-36) This invention relates to a file guide and more specifically provides for a file guide or holder to facilitate the use of a file while filing a saw.

An object of this invention is to provide a file guide which permits a saw filer to have better control of the file, thereby doing an efficient and accurate job.

Another object of this invention is to provide a file guide which has a handle and a thumb rest which eliminates the injuries to the hands or fingers which are often suffered by saw filers.

A further object of this invention is to provide a file guide which is simple in operation, easy to install on the file, and cheap to manufacture.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a perspective side view of the file guide attached to a triangular file and showing the relationship of the file guide, file, and saw;

Figure 2 is a longitudinal, vertical section view taken substantially along section line 22 of Figure 1 showing details of the thumb rest, the file holding means,

and the clamping nut arrangement; and,

Figure 3 is a bottom plan view of the structure of Figure 1 showing details of the bottom of the file guide and the file holding means.

Referring now more specifically to the drawings, it will be seen that the numeral 14 generally designates a file chuck which is provided with a handle 12 and a substantially U-shaped thumb rest 14.

The handle 12 and thumb rest 14 are substantially at right angles to each other with the thumb rest 14 being located below the handle 12 to assume the natural position of the saw filers hand while he is filing a saw. Attached to the underside of the juncture between the handle 12 and thumb rest 14 is a tubular member 16 having a pair of slots 18 extending upwardly from the bottom edge of said tubular member 16. A bulged U-shaped member or loop 20 is vertically slidable in the tubular member 16 and the bulges are received in the slots 18 to preclude rotation of the U-shaped member 20. Rigidly attached to the free ends of the leg members of the U-shaped member 20 is an upstanding threaded shank or member 22 which passes through an aperture 24 in the juncture of the handle 12 and the thumb rest 14. Threadedly engaging the upper end of the threaded member 22 is a thumb nut 26 of suitable wing-type construction and between the thumb nut 26 and the upper surface of the juncture between the handle 12 and thumb rest 14 is interposed a steel washer 28 and a rubber resilient washer 30. As best seen in Figure 3, the U-shaped member 20 is provided with an elongated file receiving saddle 32 which is substantially at right angles to the bulged portion of the U-shaped member 20. On the lower edge of the tubular member 16 at right angles to the slots 18 is a pair of shallow notches as slots 34 receiving a bar 36 which extends beyond the edges of the tubular member 16 and engages a flat portion of a triangular file 38, thereby preventing any rocking or rotation of the file 38 while filing a saw 40.

The operation of this device will be readily understood. The device is mounted on the forward or outer end por- 2,799,185 Patented July 16, 1957 tion of the file 38. The filer by loosening wing nut 26 and causing the U-shaped member 20 to project below the lower edge of the tubular member 16, may insert the edge of the triangular file 38 through the looped portion of the U-shaped member with the fiat portion of the file facing upwardly in contact with the bar 36 and the wing nut 26 is then tightened drawing the U-shaped member upwardly in the slots 18 and clamping the file 38 securely in the guide 10. The rubber and

steel washers

30 and 28 maintain a constant resilient pressure against the file 38 for securing the device in position thereon. To sharpen a saw, the operator grasps the usual handle on one end of the file in one hand and the handle 12 in the other hand with the thumb thereof in the rest 14 and by proper movement of the file 38 sharpens the saw 40 in an obvious manner. The file guide of this invention eliminates injuries to the fingers and hand which is a common occurrence while filing a saw and it also permits the saw filer to perform the sharpening operation efiiciently and accurately. The file guide may be made of any suitable durable material, such as aluminum, iron, and plastic.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.

What is claimed as new is as follows:

1. A file guide comprising: an elongated handle, and a chuck for the reception of a file, mounted on one end portion of the handle, said chuck including a tubular member fixed on the handle at right angles thereto, a shank extending through the handle into said member, a loop for the passage of the file, mounted on the shank and cooperable with said member for clamping said file therebetween, and a nut threaded on the shank for tightening the loop on the file.

2. A file guide comprising: an elongated handle, and a chuck for the reception of a file, mounted on one end portion of the handle, said chuck including a tubular member fixed on the handle at right angles thereto, a shank extending through the handle into said member, a loop for the passage of the file, mounted on the shank and cooperable with said member for clamping said file therebetween, and a nut threaded on the shank for tightening the loop on the file, said member having slots therein slidably accommodating the loop for retaining the shank against rotation when the nut is turned.

3. A file guide comprising: an elongated handle, and a chuck for the reception of a file, mounted on one end portion of the handle, said chuck including a tubular member fixed on the handle at right angles thereto, a shank extending through the handle into said member, a loop for the passage of the file, mounted on the shank and cooperable with said member for clamping said file therebetween, and a nut threaded on the shank for tightening the loop on the file, said member having slot-s therein slidably accommodating the loop for retaining the shank against rotation when the nut is turned, said member further having notches in one end portion thereof, and a bar mounted in the notches for engagement with the file.

References Cited in the file of this patent UNITED STATES PATENTS 674,892 Whitten May 28, 1901 1,648,426 Sears Nov. 8, 1927 1,858,380 Stoddard May 17, 1932 1,906,881 Olas May 2, 1933