US2938412A - Sheet metal reforming tool - Google Patents

Description

May 31, 1960 F. WALKER 2,938,412

SHEET METAL REFORMING TOOL Filed June 14, 1957 INVENTOR. flora L. [MM/r62 mzm 197 TOR/V6 Y.

' Unit This invention relates to improvements in devices for reforming dented sheet metal structures such as the fenders of automobiles.

An important object of the invention is to provide a basic structure to which various tool elements can be readily connected and detached as their use is required.

Another object of the invention is to provide a device for the reforming of dented sheet metal structures, which includes a tool carrier, to which various reforming elements can be detachably connected, thus requiring a single basic structure, including a handle.

Still another object of the invention is to provide a tool for reforming dented sheet metal structures, which because of the detachability of its various sheet metal engaging elements can be easily transported and more conveniently used than the present day devices requiring a complete hammer and element unit for each specific dent job.

These and various other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawing:

Figure l is a side elevational view of the tool, partly in section and showing the longest form of pick and a round formed hammer head.

Figure 2 is a side elevational view of a medium length pick.

Figure 3 is an end elevational view or" a short pick.

Figure 4 is a side elevational view of a short pick, such as is represented in Figure 3.

Figure 5 is a front elevational view of a square form hammer.

Figure 6 is a side elevational view of the hammer head shown in Figure 5.

Figure 7 is a front elevational view of a roll or cylindrical form of hammer head.

Figure 8 is a side elevational view of the structure shown in Figure 7.

Figure 9 is a front elevational view of a concave rounded type of hammer head.

Figure 10 is a side elevational view of the structure shown in Figure 9.

Figure 11 is a side elevational view of a convex rasp form of head.

Figure 12 is a side elevational view of the structure shown in Figure 11.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 15 denotes an elongated handle having an internally threaded opening 16 at one end and from this point inwardly an opening 17 is formed, the opening 16 serving to receive a threaded shank 18 projecting from a T-shaped joiner 19, the shank 18 being provided with an elongated pin 20 projecting into the opening 17, as shown in Figure 1. This structure may be changed as desired.

The cross portion of the joiner 19 is internally threaded as at 21 to receive the threaded shanks 22, 23 of reforming picks generally referred to by numeral 24 and heads generally referred to by numeral 25.

The picks 24 can be in a variety of sizes and lengths,

Stes Patent such as a long pick 26, and intermediate size pick 27 and a small or short pick 28.

The heads 25 can be of a round shape as shown in Figure l and denoted by numeral 29, square, as shown in Figures 5 and 6 and denoted by numeral 30 and of a roll or cylindrical form as shown in Figures 7 and 8 and denoted by numeral 31.

Further, the head 25 may have a concaved surface as denoted by numeral 32 and this form of head is designated by numeral 33.

Figures 11 and 12 show another form of head and this is denoted by numeral 34. This head 34 has a convex contact surface 35, which is milled or otherwise formed to provide a rasping surface.

In the use of this implement, a jamb nut 36 is first screwed onto the threaded shank of either of the desired pick 24 or the desired head 25, or both and this jamb nut is threaded inwardly on the corresponding shank until it abuts the corresponding tool structure, at which there is a shoulder. The shank 22 of the pick 24 or the shank 23 of the head 25 is fed into the threaded portion 21 of the joiner 19, to the extent shown in Figure land this is followed by feeding the corresponding jamb nut 36 outwardly on the corresponding shank until it abuts and binds against the opposed portion of the joiner 19. Thus the pick or head, or both are held firmly in place against loosening or self-adjusting.

The picks 24 and heads 25 are used in the conventional way-to reform dented sheet metal structures, such as automobile fenders. It will be observed that by having these picks and heads detachable with respect to the joiner 19 and handle 15, work can be more easily performed and the various elements carried in a smaller container than is now possible and stored in less space than is now possible.

While the foregoing description sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new is:

In a sheet metal reforming tool comprising a T-shaped joiner, a threaded stud extending from one side of said joiner at right angles thereto, an elongated pin integral with and extending from the outer end of said stud, a handle having an internally threaded opening at one end to receive said stud, and an elongated bore in communication with and extending inwardly of said threaded opening for receiving said elongated pin, said joiner also having an internally threaded bore extending longitudinally thereof at right angles to said stud, a tool head having a threaded shank for selective engagement with the bore in said joiner and a jamb nut on the threaded shank of said tool head that is adapted to be threaded on said shank to abut said joiner to prevent the unthreading of the shank on said tool head from the threaded bore in said joiner.

References Cited in the file of this patent UNITED STATES PATENTS 723,764 Vick Mar. 24, 1903 974,021 Blake Oct. 25, 1910 l,l2l,085 Fitzgerald Dec. 15, 1914 1,784,683 Schweigert Dec. 9, 1930 1,972,540 Teate Sept. 4, 1934 2,5l7,345 Pies Aug. 1, 1950 2,537,244 Swett Jan. 9, 1951 2,763,172 Richards Sept. 18, 1956 FOREIGN PATENTS 485,190 Canada July 29, 1952

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