US3914838A - File handle - Google Patents

Abstract

A file handle for files of the type having teeth stroke out of a relatively thin metal plate with the plate having U-shaped reverted attaching flanges at the opposite ends thereof. The handle includes an elongate metal bar body having a downwardly sloped outer end for engaging in one of the flanges of the file. The bar has an upstanding portion extending at right angles to the body carrying a handle on its upper end extending at right angles to the upstanding portion so as to be generally parallel to the body portion. The upstanding portion has a threaded stud fixed thereto and a cam member is mounted on the threaded stud for engagement with the opposite end of the file. A thumb screw on the threaded stud actuates the cam member to clamp the file to the handle.

Description

United States Patent [1 1 Coon [ Oct. 28, 1975 [54] FILE HANDLE [76] Inventor: James A. Coon, 929 Drever St., ,W.

Sacramento, Calif. 95691 22 Filed: July 8, 1974 21 App1.No.:486,435

Primary Examiner-Harrison L. Hinson Attorney, Agent, or F irm-Blair & Brown [5 7] ABSTRACT A file handle for files of the type having teeth stroke out of a relatively thin metal plate with the plate having U-shaped reverted attaching flanges at the opposite ends thereof. The handle includes an elongate metal bar body having a downwardly sloped outer end for engaging in one of the flanges of the file. The bar has an upstanding portion extending at right angles to the body carrying a handle on its upper end extending at right angles to the upstanding portion so as to be generally parallel to the body portion. The upstanding portion has a threaded stud fixed thereto and a cam member is mounted on the threaded stud for engagement with the opposite end of the file. A thumb screw on the threaded stud actuates the cam member to clamp the file to the handle.

4 Claims, 7 Drawing Figures U.S. Patent Oct. 28, 1975 3,914,838

FILE HANDLE BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to file handles for files of the relatively thin metal type.

2. Summary of the Invention The instant file handle is for use with files of the type having reverted U-shaped flanges formed on a relatively thin metal plate having file teeth stroke outwardly therefrom. The handle is formed of a metal bar having a downwardly sloping outer end portion, a body portion, an upstanding portion integrally formed with the body portion and extending perpendicularly upwardly therefrom and a hand grip portion extending perpendicularly to the upstanding portion. The downwardly sloped portion is adapted to engage in one of the reverted U-shaped'flanges of the file and a cam member on the upstanding portion is adapted to engage in the other flange of the file. A threaded member actuates the cam member to clamp the file to the handle.

The primary object of the invention is to provide a sturdy handle for manipulating a file.

Other objects and advantages will become apparent in the following specification when considered in light of the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a top plan view of the invention;

FIG. 2 is a side elevation of the invention;

FIG. 3 is an enlarged end elevation of the invention;

FIG. 4 is a fragmentary vertical sectional view, taken along the line 44 of FIG. 3, looking in the direction of the arrows;

FIG. 5 is a fragmentary exploded perspective view of the cam mounting;

FIG. 6 is a fragmentary top plan view of the downwardly sloped end portion of the handle; and

FIG. 7 is a fragmentary vertical sectional view, taken along the line 77 of FIG. 6, looking in the direction of the arrows.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings in detail, wherein like reference characters indicate like parts throughout the several figures, the reference numeral 10 indicates generally a file handle constructed in accordance with the invention.

The file handle 10 is adapted for use with a file 11 formed of generally flat thin metal having a reverted U-shaped flange 12 on one end and a reverted U- shaped flange 13 on the opposite end. Teeth 14 are struck downwardly from the file 11 to produce acutting surface. The file 11 is conventional in design and is described to illustrate the functioning of the file handle 10.

The file handle 10 includes an elongate body 15 formed of metal bar stock and including a downwardly sloped outer end portion 16 as can be best seen in FIG. 7. The outer end portion 16 is beveled at 17 and 18 to permit its ready engagement within the flange 12 of the file 11. An upstanding portion 19 is integrally formed on the body 15 and extends perpendicularly upwardly therefrom. A hand grip portion 20 is integrally formed with the upper end of the upstanding portion 19 and extends perpendicularly thereto generally parallel to the body 15. The hand grip portion 20 has a plate 21 secured thereto when desired, to make the hand grip portion sufficiently thick for the comfort of the user.

A threaded stud 22 is rigidly secured to the upstanding portion 14 and extends perpendicularly outwardly therefrom. The threaded stud may be welded to the upstanding portion 19 if desired. A channel shaped cam member 23 is provided with a bore 24 for engaging over the threaded stud with flanges 25, 26 of the cam member 23 engaging on opposite sides of the upstanding portion 19. A dome 27 is struck inwardly of the channel cam member 23 between the flanges 25, 26 as can be clearly seen in FIGS. 4 and 5 to engage the upstanding portion 19 and provide a pivot for the cam member 23.

An outwardly sloped flange 28 is integrally formed on the lower end of the cam member 23 for engaging within the U-shaped flange 13 on the file 11 as can be best seen in FIG. 4. A knurled thumb nut 29 is threaded onto the threaded stud 22 and engages against the cam member 23 to move the upper end of the cam member 23 inwardly toward the upright portion 19 while the outwardly sloped flange 28 on the lower end thereof moves outwardly due to the pivot dome 27.

The body portion 15 of the file handle 10 has a plurality of downwardly projecting spacer elements 30 struck out of the body portion 15 to support the file 11 in its normally flat configuration. The spacer elements 30 permit filings cut by the file teeth 14 to move through the file 11 without clogging.

Having thus described the preferred embodiment of the invention it should be understood that numerous structural modifications and adaptations may be resorted to without departing from the spirit of the invention.

What is claimed is:

1. A file handle for use with files of the type formed of a relatively thin metal plate having reverted U- shaped attaching flanges at the opposite ends thereof and cutting teeth struck downwardly from the plate to form a cutting surface comprising an elongate generally fiat body, a downwardly sloped end portion on the outer end of said body for engagement within one of the U-shaped flanges of said file, spacer elements struck downwardly from said body to space said file downwardly from said body, an upstanding portion integrally formed on the opposite end of said body, hand controlled cam means on said upstanding portion for engaging within the U-shaped reverted flange at the opposite end of said file for clamping said file to said body, cam means including a threaded stud rigidly secured to said upstanding portion, a channel shaped cam member mounted on said threaded stud and including a pivot dome adapted to engage said upstanding portion, a thumb nut threaded onto said threaded stud for actuating said cam member, and hand grip means on said upstanding portion.

2. A device as claimed in claim 1 including a pair of oppositely disposed flanges on said channel member for engaging along opposite side edges of said upstanding portion.

3. A device as claimed in claim 2 wherein said hand grip means includes a portion extending perpendicularly from the upper end of said upstanding portion and integrally formed therewith and a plate secured to said hand grip portion for increasing the thickness of said portion to provide a comfortable hand grip.

4. A device as claimed in claim 3 wherein said body, said upstanding portion and said hand grip portion are formed of a single strip of bar metal.

Claims (4)

1. A file handle for use with files of the type formed of a relatively thin metal plate having reverted U-shaped attaching flanges at the opposite ends thereof and cutting teeth struck downwardly from the plate to form a cutting surface comprising an elongate generally flat body, a downwardly sloped end portion on the outer end of said body for engagement within one of the Ushaped flanges of said file, spacer elements struck downwardly from said body to space said file downwardly from said body, an upstanding portion integrally formed on the opposite end of said body, hand controlled cam means on said upstanding portion for engaging within the U-shaped reverted flange at the opposite end of said file for clamping said file to said body, cam means including a threaded stud rigidly secured to said upstanding portion, a channel shaped cam member mounted on said threaded stud and including a pivot dome adapted to engage said upstanding portion, a thumb nut threaded onto said threaded stud for actuating said cam member, and hand grip means on said upstanding portion.

2. A device as claimed in claim 1 including a pair of oppositely disposed flanges on said channel member for engaging along opposite side edges of said upstanding portion.

3. A device as claimed in claim 2 wherein said hand grip means includes a portion extending perpendicularly from the upper end of said upstanding portion and integrally formed therewith and a plate secured to said hand grip portion for increasing the thickness of said portion to provide a comfortable hand grip.

4. A device as claimed in claim 3 wherein said body, said upstanding portion and said hand grip portion are formed of a single strip of bar metal.

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