US1436589A - Cotter-pin puller - Google Patents

Description

0. B. HOPKINS AND R. L. FOBNEY.

COTTER PIN FULLER. 4 I APPLICATION FILED AUG- 15. L921.

Patented Nov 21, 1922.

fi x 2 Zi v g QQJJ Patented Nov. 21, 1922.

UNITED stares rarsu'r @HHQE.

OGLE B. HOPKINS AND ROBERT L. FORNEY, OF FORSYTH, MQNTANA.

/ COTTER-PIN FULLER.

Application filed August 15, 1921.

T 0 all whom it may concern:

Be it known that we, OoLn B. HOPKINS and ROBERT L. F ORNEY, citizens of the United States, both residing at F orsyth, in the county of Rosebud and State of Montana, have invented certain new and useful Improvements in Cotter-Pin Pullers; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in cotter pin pullers, and has for an object to provide an improved tool with an arrangement of points thereon designed to cooperate with a bolt and the head of a cotter pin to dislodge any foreign matter from the opening in the head, and to enter such head for'the purpose of prying the pin loose from the bolt.

It is also an object of the invention to construct and rearrange the points of the cotter pin pullers so as to enable the better purchase of the tool upon a bolt, and consequently the more effective leverage to be exerted upon the pin, and its more ready withdrawal from the bolt.

Another object of the invention is to provide plier jaws in conjunction with the puller for dislodging fragments of cotter pins where the tool points are unable to take hold.

The invention will be more fully understood after reference to the accompanying drawings, in which like parts are indicated by similar reference symbols throughout the several views, and in which:

Figure 1 is a side view of an improved tool constructed according to the present invention and shown in an initial position as applied to a cotter pin and bolt represented in dotted lines.

Figure 2 is a similar view with the parts in a subsequent position.

Figure 3 is an enlarged fragmentary side view of the points of the implement.

Figure 4 is an end view thereof.

Figure 5 is a cross sectional view taken on the line 55 in Fig. 2.

Figure 6 is a similar view along the line 6-6 in Figure 2; and

Figure 7 is also a transverse sectional view taken along the line 77 in Fig. 2.

Serial No. 492,504.

Referring more particularly to the drawings, 1 and 2 designate the handles of the implement which are normally held apart by the use of a flat spring 3 disposed between the handles and secured, as for instance, by rivets 4 or other suitable means to the handle 2. i

The free ends of the handles are turned inwardly as indicated at-5 and 6, in order to enable a better grip to be obtained upon the implement, when the handles are closed, as shown in Fig. 2, to prevent injury to the hands when using the device to remove foreign matter from the eye of the cotter pin.

The handles 1 and 2 are pivoted together as at 7, and forwardly of the pivot pin are provided with points 8 and 9 which are constructed as more particularly shown in Figs. 3 and 4. The lower jaw 9 is formed with a beveled end 10, the lower portion thereof projecting forwardly and acting to project well beneath the head of the cotter pin to gain a firm seat on the end of the bolt. This beveled part 10 is also useful in spreading the divided ends of the cotter pins. The point 9 is also provided with a recess 11, arranged on an inclination greater than the beveled end 10 in order to admit the lower side of the companion point 8, whereby the projecting curved end 12 of such point may I(inter the eye of the cotter pin close to the olt.

As shown in Fig. 4:, the end 12 is pointed to admit it into the eye of the cotter pin for the purpose of forcing out foreign matter. This portion 12 is also rounded or curved, as indicated at 13, to enable the point to be bent upwardly and secure a better hold in the eye of the cotter pin. The extreme point is adapted to gouge the hardened oil from the eye of the cotter pin.

Jaws 1 1 and 15 are provided upon the handles 1 and 2 just rearwardly of the pivot point 7, and they act as pliers to grip fragments of the cotter pin when the eye is no longer accessible to the projecting end 12 of the point 8. As shown more particularly in Fig. 7 the aws 14; and 15 are extended laterally of the handles 1 and 2, and they are used by turning the handle sidewise, the projecting portions enabling the jaws to readily grip portions of the cotter pin without interference, for instance, from the nut on the bolt, or other adjacent or surrounding parts.

The jaws 14 and 15 also act as bumpers to prevent pinching the fingers when the tool is closed.

The turned-in ends 5 and 6 may also act as gouges. .In use the implement is placed in the position indicated in Fig. 1 with the point 9 engaging a bolt 16 indicated in dotted lines, and the projecting portion 12 of the upper jaw 8 entering the eye of a cotter pin indicated in dotted lines at 17. The jaws are squeezed together as indicated in Fig. 2, resulting in the withdrawal of the cotter pin from the bolt. Should the cotter pin become broken or otherwise injured, the jaws 14: and 15 are closed, and the same and the points 8 and 9 are used as a lever to en gage the bolt.

It will be appreciated from the foregoing that the improved tool combines several useful features, and enables the more ready and effective removal of cot-terpins from bolts and their insertion through the opening of bolts and their subsequent spreading.

It will be obvious that various modifications might be madein the herein described construction, and in the combination and arrangement of parts which might be used without departing from the spirit of our invention; and We do not mean to limit the invention to such details except as particularly pointed out in the claims.

We claim:

1. A cotter pin puller comprising a pair of handles pivoted together and having points, one of the points having a bevelled end and a depression extending at its outer end'close to the base of the point, the other point being longer than the companion point and adapted when closed to lie in said depression, said longer point being curved upwardly and reduced in thickness from the bevelled end of the companion point, substantially as described. j j

2. A cotter pin puller comprising a pair of handles pivoted together and having points, one of the points being shorter as compared with the other and having a bevelled end With a sharp protruding nose at the base of the point, said point also having a depression leading from the bevelled end backwardly and upwardly whereby to receive the other point, said other point projecting beyond the bevelled end of the first mentioned point and adapted in a closed position to lie in said depression, the projecting end of the last mentioned point being curved upwardly and reduced in thickness in both dimensions, substantially as described.

OGLE B. HOPKINS. ROBERT L. FORNEY'.

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