US2501871A - Metal-working tool - Google Patents

Description

March 28,1950 T. MCCLIMANS 2,501,871

METAL WORKING TOOL Filed Feb. 19, 1946 IN V EN TOR.

Patented Mar. 28, 1950 UNITED STATES PATENT OFFICE METAL-WORKING TOOL Thomas L. McClimans, Denver, Colo.

Application February 19, 1946, Serial No. 648,677

4 Claims.

This invention relates to a tool for forming deckled edges on metal articles. In the manufacture of ornamental goods, such as Indian jewelry and the like, from sheet metal, it is customary to hammer the edge of the article to produce a rough, hand-made appearance. This is usually done with a ball-peen hammer, which requires high skill and considerable time.

The principal object of this invention is to produce a device by means of which the hammered or deckled edge can be quickly, easily, and accurately produced by unskilled or semi-skilled labor.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efficiency. These will become more apparent from the following description.

In the following detail description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. 1 is a perspective view of one form of the improved tool, illustrating it secured in place on a work bench ready for use;

Fig. 2 is a fragmentary side view of the improved tool;

Fig. 3 is a vertical section therethrough, taken on the line 3-3, Fig. 2;

Fig. 4 is a perspective view, illustrating an alternate form of the invention;

Fig. 5 illustrates the type of work produced by the improved tool; and

Fig. 6 is a magnified edge view of an article illustrating the type of work produced by the improved tool.

In Fig. 5, a sheet metal article, such as a letter opener, is indicated at 23, provided with a hammered edge 24 produced by use of this improved tool.

The tool is designed to be secured to any supporting surface or work bench, such as indicated at [0. It consists of a relatively heavy, metallic base plate ll having bolt-receiving notches I2 formed in its extremities by means of which it may be securely attached to the bench Ill by means of attachment bolts 13.

A cylindrical anvil member [4 projects upwardly from the middleTof'the base II. The anvil member may be secured. to the base in any desired manner. It ispreferably formed with a tenon IS on its lower extremity which is forcibly 2 driven into a receiving opening in the base plate A vertical, concentric guide pin [6 is similarly driven to a tight fit in a receiving opening in the top of the anvil member l4 so as to project upwardly therefrom. An elongated hammer member I! is slidably mounted on the pin l6, it being provided with an axial bore It for receiving the pin. One extremity of the hammer member I1 is rounded for its full diameter, as shown at [9. The other extremity is similarly rounded and reduced in diameter, as shown at 20.

A cylindrical cup-shaped weight 2| is removably fitted over the upper extremity of the hammer H and is secured in place thereon by means of a set screw 22.

The hammered edge 24 is produced by placing the article on the anvil member [4 with its edge against the pin [6. The hammer member H and theweight 2| are then dropped or driven downwardly by hand against the edge of the article 23 to produce a rounded indentation therein, as shown inthe magnified view of Fig. 6. It will be noted that the indentations 24 will be uniformly spaced inwardly from the edge of the article due to the fact that the edge contacts the pin [6, which acts as a guide. The spacing is accomplished by moving the article across the pin Hi.

In soft material the hammer can simply be dropped from a uniform height so that all indentations will be formed to a uniform depth. In this way exceedingly accurate work can be rapidly produced.

For smaller and more intricate articles the weight cup can be removed and the hammer reversed therein so as to project the smaller reduced extremity downward for contact with the work. If desired the weight cup 21 can be removed entirely for exceedingly small, delicate work.

In Fig. 4 an alternate form of the invention is illustrated, more particularly designed for use on 3 indicated at 3fl,is placed against the guide strip 2! and the hammer 28 is driven downwardly along the edge thereof at spaced intervals to produce hammer indentations 31 therein.

While the invention has been thus far described for hand use, it is also adaptable, without any change, for use in a power-driven punch press for more rapid quantity production. In the latter' case, either of the base plates II or 25 are bolted directly to the bed of the punch press. and the cup-shaped weight 2| is inserted into the chuck of the hammer of the punch press and secured in place therein, as is usual in punch and die work. In the form of Fig. 1 the hammer member 28 is inserted into the hammer of the punch press and the work is moved along the guide plate 21. Thus, it may be seen that the device is adaptable for either hand or machine operation, as desired.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claims, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:

1. A tool for producing a hammered edge on a sheet metal article comprising: a base member; an anvil member arising from said base member; a guide member arising from said anvil member; and a hammer member slidably engaging said guide member so as to contact the upper surface of said anvil member.

2. A tool for producing a hammered edge on a sheet metal article comprising: a base member; an anvil member having a flat upper surface secured to and extending upwardly from said base member; a vertical guide pin mounted in said anvil member and extending upwardly from said surface therefrom; and a hammer member, said hammer member being provided with a bore for slidably receiving said pin the lower extremity of said handle member contacting the flat upper surface so as to drive the edge of a flat article lying on said surface and in contact with said pin against said fiat surface.

3. A tool for producing a hammered edge on a sheet metal article comprising: a base member; an anvil member secured to and extending upwardly from said base member; a vertical guide pin mounted in said anvil member and extending upwardly therefrom; a hammer member, said hammer member being provided with a bore for slidably receiving said pin; and a rounded lower extremity on said hammer member contacting said anvil member.

4. A tool for producing a hammered edge on a sheet metal article comprising: a base plate; a transversely extending flat sided guide strip extending across said plate; and a cylindrical hammer member, said hammer member having a diametrically extending notch in its lower extremity for slidably receiving said guide strip, said notch being sufiiciently deep to allow the lower extremity of said hammer member to contact said base plate at each side of said strip.

THOMAS L. McCLIMANS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 374,681 Kelly Dec. 13, 1887 395,292 Munger Dec. 25, 1888 454,149 Babbitt June 16, 1891 1,367,238 Coakley Feb. 1, 1921 1,697,044 Burda Jan. 1, 1929 1,966,663 Drake July 17, 1934 1,981,925 Russell et al Nov. 27, 1934 2,071,401 Hansen Feb. 23, 1937

Images