US2172351A - Forming tool - Google Patents

Description

Sept. 12, 1939.

R. C. KIVLEY ET AL FORMING TOOL Filed May 15, 1937 Patented Sept. 12, 1939 UNITED STATES rarest or ies FORMING TOQL Application May 15, 1937, Serial No. 142,820

2 Claims.

This invention relates to forming tools and more particularly to pincers for tightly closing hook eyes.

It is an object of the present invention to provide a simple and inexpensive forming tool.

In accordance with one embodiment of the invention, there is provided a tool for tightly closing a hook eye, comprising a pair of levers movable with respect to each other about a pivot positioned intermediate the ends of the levers for moving a pair of article gripping jaws formed on the ends of the levers toward each other to bend the tip of a partially formed hook eye to a position beyond the body portion of the hook. The pivot, about which the levers are movable, is formed with two eccentrically formed bearing surfaces upon which the levers are mounted and has a lever fixed thereto for rotating the pivot to cause the pivoted levers to move longitudinally with respect to each other for forcing the tip of the hook back into the plane of the body thereof after the bending operation.

A better understanding of the invention may be had by reference to the following detailed description when considered in conjunction with the accompanying drawing, wherein Fig. 1 is a plan view of a pair of pincers made in accordance with the present invention, wherein the part being formed is shown in dot and dash lines, wherein the levers are broken off to conserve space in the drawing, and wherein the pivot actuating lever is in its right hand position;

Fig. 2 is a side elevational View of the pincers as shown in Fig. 1;

Fig. 3 is a fragmentary plan view showing the position of the jaws after the pivot actuating lever has been moved to its left hand position;

Fig. 4 is a fragmentary side elevational View of the pincers as shown in Fig. 3;

Fig. 5 is an end elevational View of the right end of the pincers with the part to be formed shown in dot and dash lines before the part is bent by the tool;

Fig. 6 is an end elevational View similar to Fig. 5 after the part is bent in the tool by moving the jaws together; and

Fig. 7 is an end elevational view similar to Figs. 5 and 6 with the part shown in dot and dash lines as it will appear after the pivot actuating lever has been moved to its left hand position and released.

Referring now to the drawing, wherein like reference numbers indicate the same parts throughout the several views, a pair of levers I0 and I I are provided with hook engaging jaws I2 and I3 and are pivoted one to another by a pivot member It. As shown in Fig. 2, the upper lever II is formed integrally with the lower jaw I2, and the lowerlever II is formed integrally with the upper jaw I3. The lever II has a portion I5 5 thereof directly beneath the left end of the lever H3 and has a portion It formed integrally therewith which extends outwardly to the side (below in Fig. 1) and upwardly (Fig. 2) for receiving the pivot pin It. The right hand end (Figs. 1, 2, 3, l0 and 4) of the lever I I has the hook engaging jaw it formed thereon. This jaw extends over the jaw I2 and has formed therein a rounded slot I! for receiving a partially formed hook, shown in dot and dash lines at I8.

The pivot member I l comprises two round bearing portions ZI and 22 eccentrically disposed with respect to each other and freely rotatable in apertures 23 and 24 formed in the levers I I and Iii, respectively. A lever 26 is pinned to the portion 21 of the pivot member It by a pin 21, and the portion 22 of the pivot member I4 is threaded to receive a machine screw 28, a washer 29 being interposed between the screw 28 and the lever IE1.

The lever II has an adjustable stop member 30 mounted therein for limiting the amount of movement of the levers I0 and II toward each other and has a pair of stop pins 3| and 32 therein for limiting the rocking movement of the lever 26. The rounded slot I'I conforms to the shape of the hook being formed and at its lower end, in Fig. 1, is of a width slightly larger than the thickness of the stock forming the hook, but tapers as shown at 35 to receive the partially formed hook so that it will engage a substantial portion of the body of the hook. Formed in the jaw I2 is a rounded slot 36 which will engage a small portion of the hook I8 adjacent the tip thereof.

This pincers, which is designed primarily for closing the hooks for guy shields at the point where the hook is permanently attached to the shield, may be operated to tightly close the eye of the hook I8 by placing the hook I8 between the jaws I2 and I3, as shown in Fig. 1, and moving the left hand end, Figs. 1, 2, 3, and 4, of the levers I I! and I I together. This will cause the tip of the hook to be bent beyond the body portion thereof, as shown in Fig. 6, the hook in place between the jaws I2 and I3 being shown in Fig. 5 prior to the bending operation illustrated in Fig. 6. Due to the configuration of the hook I8, the operation of the levers I!) and I I will temporarily bend the tip of the hook beyond the body portion thereof. However, the resiliency of the material will per- 5 mit the tip to move back a slight distance from V the position shown in Fig. 6, whereupon the levers l and l I still being held in their closed position, which may be regulated by the adjustable stop member 30, the lever 26 may be moved to the left, Figs. 1, 2, 3 and 4, to move the tip of the hook l8 to the left, as shown in'Figs. 3 and 4. This last operation bends the tip of the hook beyond the desired position, but the resilency of the material will cause it to move back into the desired position, as shown in Fig. 7, upon the release of the lever 26.

Although the forming tool described hereinbefore has been described in connection with the forming of hooks for guy wire shields, it will be apparent that the mode of operation of the tool might be modified somewhat without changing any structural features thereof to'permit the use of the tool for forming various types of hook eyes and similar articles. Accordingly, the invention is to be limited only by the scope oi the appended claims. 7

'What is claimed is: r

1. Apincers for closing hook eyes comprising a pair of actuating levers, eccentric means for pivotally interconnecting said levers, said levers being freely rotatable on said eccentric means, a jaw portion formed on one of said levers for engaging a substantial portion of the body portion of a hook eye to be closed, a jaw portion formed on the other lever for engaging a small portion of the hook eye adjacent its tip, means for actuating said eccentric pivotal connecting means, said levers being operable to move the jaws toward each other and said eccentric pivotal connecting means being operable to move the jaws relative to each other in substantially parallel planes, means for limiting the movement of said jaws toward each other, and means for limiting the amount of the movement of Said jaws in substantially parallel planes. 7

2. A pincers for closing hook eyes comprising hook-engaging jaws each having a plurality of hook-engaging surfaces, a pair of levers for oper-

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