US1316451A - Metal-working tool - Google Patents

Description

H. R. KENNEDY. METAL WORKING TOOL.

APPLlCATION FILED MA ILZQ, 19l9.

1,316,451. PatentedSe pt. 16, 1919.

Inventor Io mer Z Kenxealz,

and State of California, have inven and useful Improvements in Metal-Work.

UNITED STATES PATENT OFFICE.

HOMER B. KENNEDY, 01 L05 ANGELEB, CALIFORNIA, ASSIGNOB 1'0 GUSSIE I. W I I Y, 01' L08 ANGIE-LES, CALIFORNIA.

MAL-WORKING '1001'1.

Specification of Letters Intent.

PatentgLSpphJfi, 1919.

To all whom it may concern:

Be it known that I, HOMER R. Kni ivnnr, a citizen of the United States, residingat Los Angeles, in the county of Los Angeles new ing Tools, of which the following is a specification. L

This invention relates to metal work ng tools and particularly to tools for removing bumps or indentations in fenders, door panels, tonneaus, cowls, etc., without injury to the enamel.

At the present time whenever a fender or other metal part of an automobile is damaged through collision or other causes, said part is straightened by a process known as hand-peening. This process consists of lacing a templet or stake head under the amaged surface of the sheet metal and pounding upon the top surface with a hammer. As will be readily understood, pounding cracks the enamel, and while the surface ma be entirely |smooth when the ob is jimshe yet at the same time hand-peening is a long and laborious task. Usually when a fender or other sheet metal art of an automobile is damaged, the fen er, door, 'etc., is removed from the automobile carriage and the work is done in the shop, the result being several hours delay and great expense to the customer. The method of removing bumps or indentations about to he described, consists of a simple arrangementof parts where by hand-peening is done away with and the indentation may be removed within a mini-'- mum of time, and the part or ObJGOli r estored to its original shape usually withrn five minutes for a'bad indentation, at a minimum of expense.

With the above and other ob ects in view, the invention consists in the novel and useful provision, combination, formation, association and inter-relation of parts, members and features, all as hereinafter described, shown in the drawing, and finally pointed out in claims.

Figure 1 is a side elevation of a sheet metal working device show ng a pressure bearing means cooperatingwith the tongs;

Fig. 2 is a side elevation of roller members in position, the dotted line indicatingvar'ious positions to which said roller members may be placed in the tong ends;

Fig. 3 is a pressure bar showing swiveled feet thereon; a

Fig. 4 is a longitudinal view of a convex surface roller member used in pressing out indentations of sheet metal;

Fig. 5 is a corresponding roller member, but with a concave cylindrical surface Fig. 6 is a detail sectional view of as ee r iron washer and ball-headed tail nut which fits in same;

Fig. 7 is a forked end rod with a link end and pin which join the tongs shown in Fig. 1 together and looking in the direction of the appended arrow;

Fig. 8 is a, detail of an approved form of pressure pad;

Fig. 9 is a longitudinal view of a stake head used in the present invention;

Fig. 10 is a lateral view of the stake head shown in Fig. 9;

Fig. 11 is a cross sectional view of the pressure feet used upon the pressure bar illustrated in Fig. 3;

Fig. 12 is an orthogonal view of the serrated portion of the tongs shown in Fig. 1 and looking in the direction of the appended ar row and,

Fig. 13 is a fragmentary side view of the T head pressure bolt.

Corresponding parts in all the figures are designated by the same reference characters.

Referring with particularity to the drawing, A designates tongs, B a pressure bolt, 0 a pressure bar, D a roller member, E a

corresgondinfi roller member, F pressure feet, and stake heads, and J a sleeper iron washer.

Referring to Fig. 1 the tongs A comprise two members a and b, which are h' -con nected as at 1, one of the members either a or b having a forked end while the other member is connected to said forked end by a bolt 13. The member a has a notched or serrated surface 3 extending longitudinally thereof. Theend of the member a or that 1 portion farthest removed from the hinged connection between a and b is mortised as at threads. The ball-headed tail nut is pro vided with a convex portion 6 which fits into a correspondingly concave portion 7 of the sleeper iron washer j. The ortions 6 and 7 are, as stated, different in size so that a rockin motion may be provided between them. he sleeper lron washer j is provided with a bossed head 9 for strength and with flanges 8 which ride upon the surface of the member b and act as a guide for the sleeper iron washer J. The members a and b have longitudinal slots 9 so that the T- head pressure bar B may move within said slots, as illustrated in Fi 1.

In order to make the device 0 erable the stake heads G or H, roller mem ers D and E, as well as the pressure bar C, with its walking feet F are provided. Each of the members just mentioned are provided with stump tenons 10 shaped as a frustum of a regular pyramid. These tenons 10 fit within the mortise 4 of the members a and b of the tongs A and project in each case from the base of the respective members just men tioned, The purpose of making the tenons in the shape of the frustuni of a regular pyramid of any number of sides, shown in the drawing as a tetrahedron, and the mortise 4 of a corresponding shape, is in order that the tenon with its connected member me be forced within the mortise 4 and easily removed therefrom when desired by tapping either of the members a or b of the tongs A. If it were desired to remove an indentation in an automobile fende'r the pressure bar shown in Fig. 3 would be used on the concave surface of same, while one of the members shown in the remaining figures, as 4, 5, 8 and 9, would also be used on the under surface of the fender. pressure bar C shown in Fig. 8, as mentioned, is provided at its center portion with the tenon 10 and has two arms d and e, the arms d and 0 being conical in shape and the base of the cones being at the part where the tenon 10 'oins. This is in order to give strength to t e pressure bar and resist compressive stresses. Each of the arms (1 and e are rovided with flanged portions 11 at the end portions of said arms or the art farthest removed from the tenon 10.

Tpon the conical arms 03 and e are placed the swiveled pressure feet F as shown in detail in Fig. 11, which feet are convex on their under surface and covered with soft rubber 13. The pressure feet may be of any shape desired, but preferably rectangular. An eyebolt 12 is screwed in the top surface of the ressure feet F at a center point, such eye b0 t 12 having an inside diameter greater than the diameter of the arms d and v of the pressure bar C.

The roller members illustrated in Figs. 4 and 5 are complcniontal in formation, one

of said rollers being concave while the other The I roller is correspondingly convex. The roller members 14 and 15 are provided with yokes 16. Connectinn the yokes 16 with the roller cylindrical members is an axis 17 held in position to said yokes 16 with cotter pins 18 and at the base of the yokes as at 19 are tenons 10, that is, there are two tenons provided at right angles to one another, the pur ose being to place the rollers D and E in t e mortise section 4 of the tongs A so that the rollers may lie along said tong members or ma extend radially downward therefrom as i1 ustrated in Fig. 2.

G is a form of stake head'that may be used in the embodiment of my invention, and His a stake head. Both G and H may be made in many sections, corresponding to the work to be performed.

In operation if it is desired to remove an indentation in an automobile fender, the pressure bar 0 with its swiveled feet F would be placed in the mortise 4 of the tong A on either of the arms a or b. On the opposite mortise 4 is placed a stake head G or H, or if desired one of the roller members D or E. We. will assume for the present that the indentation is very deep; consequent] the stake head G is placed within the otl ie bolt B is then turned so that the T-head slips through the slotted portion of the memher a. This allows the tongs A to be revolved or adjustably fixed by means of the pivotal connection 1. The ressure bar 0 with its feet F are then p aced upon the top surface of the fender and the feet are moved along the bars e and d of the pressure bar C to a desired point. The tongs A are then closed so that the pressure pad G is placed direct] under the deepest indentation and the F section of the pressure bolt B is slip (1 through the slot of the member A an turned so that the T head comes into contact with the serrated portion 3 of the member aof the tongls A.

The sleeper iron washer J wit its flanges. 8 now slips over the edges of the member 6 of the tongs A, and the ball-headed tailnut c is then rotated so that the pressure is increased by the member a screwing radially inward u on the threads 5 of the pressure bolt B. he pressure is lgradually increased to a certain point and t en the ball-headed tail nut c is again unscrewed a sufficient distance so that the flange head of the pressure bolt B may slip over the serrated portion 3 of the memb r a, of the tongs A, sli ped throu h the s 0t and the stake head remove by a slight tapping with a hammer or other means, upon the arm I; of the tongs A. If desired, a roller member D may then be placed in the mortise section-4 of the member b and the T'headed section of the pressure bolt B again slipped through the slot across the serrated portions and' the r mortise 4. The flanged pressure.

pressure again applied by means of the nut c. When this is done, by moving or rocking the tongs A up and down a rotatable motion is communicated to the roller D and this tends to remove the unevenness from the surface and restore the surface to its ori inal shape.

method similar to the above consists in placing both roller members D and E in the mortise 4 of the tongs A. When this is used, pressure as aboige described, is applied and the concave cylindrical surface is usually placed on the convex surface of the auto fender, while the convex roller member E is placed upon the concave surface of the auto fender. hen pressure is again a plied and the T-headed pressure bolt B is ad uSted in the serrations 3, a reciprocal movement back and forth tends to cause the members 14 and 15 of the rollermembers D and E to simultaneously roll the indentation and remove any unevennem completely without inju to the enamel. Obviously many combinations of the roller members and the stake heads .may be used, depending, as before mentioned, whether the indentation is on the fender, body, door panel, tonneau, or cowl; however, the exact shape of said. members is not an essential feature of the invention.

From the foregoing explanation of the uses of the new tool it will be observed that one of the distinguishing features of the present invention is that the manually operable frame is formed between its arms with a relativel large opening which permits it to straddle the metal body and to be shifted in varying directions to promiscuonsly located damaged areas of the metal dv. While I have hereinbefore specificall described my invention in its several p ases only with reference to the particular embodiments thereof which are illustrated in the drawing, it will be understood that the invention is in principle equally applicable to any sheet metal surface use on any vehicle, and further that it can be variously modified in its various details within the scope of the appended claims, without departing from the spirit or sacrificing the advantages thereof.

Having thus disclosed my invention. I claim and desire to secure by Letters Patcut:

1. A tool for removing indentations from sheet metal articles, including a manually-' operable frame having a relatively-large opening permitting it to straddle the metal body and to be shifted in varying directions to the location of a damaged area, opposing shaping-elements carried by the frame respectively on opposite sides of the damaged metal area, and pressure applying means carried by the frame.

2. A tool for removin indentations from sheet metal articles, inc uding a manuallyoperable frame having opposing arms adapted to carry complemental and interchangeable sheping elements, said frame also being adapted to straddle the said metal body and to "be shifted to p-romiscuously located damaged areas thereof, means for removably attaching the interchangeable shaping elements, and pressure-applying means.

3. A tool for removin indentations from sheet metal articles, inc uding a manuallyoperable frame, complemental concave and convex shaping rollers fitted to the frame in opposed relat1on and adapted to be disposed respectively on opposite sides of the damaged part, and pressure applying means.

4. tool for ironing indented sheet metal articles including a manually operable frame carrying opposin ironing elements shaped to permit of roc ing and reciprocal move.- ments over the damaged metal art.

5. A tool forironing indente sheet metal articles including a manually operable contractible frame adapted to be placed astride the metal body, oppositely disposed ironing elements carrled y the frame and shaped to permit of rocking and reciprocal movements over the damaged metal part. and means for placing said frame under adjustaable compression.

6. A tool for removin indentations from sheet metal articles, inc uding a manually operable frame formed with pivotally mounted arms which are adapted to span the damaged portion of the sheet metal and are movable toward and away from each other, complemental shaping elements applied to the arms in an opposed relation to each other. and a clamping bolt connecting the arms and adjustable longitudinally into different positions thereon, said clamping bolt providing a means for forcibly swinging the arms toward each other to bring the shaping elements into a proper engagement with the indented portion ofthe sheet metal article.

In testimony whereof, I have signed my name to this specification in the presence of the subscribing witnesses.

HOMER R. KENNEDY.

\Vitnesses:

EDNA TURNnR,

J. SHU'IT.

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