US1593433A

US1593433A - Cotter pin

Info

Publication number: US1593433A
Application number: US754808A
Authority: US
Inventors: Fred W Carlson
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-12-09
Filing date: 1924-12-09
Publication date: 1926-07-20
Anticipated expiration: 1943-07-20

Description

Jul 20,1926. 1,593,433

. F- w. CARLSON COTTER PIN Filed Dec. 9, 1924 I Zlwuntoz I 61cm nag l atentecl July 20, 1926 Fannw. GARLSON, or oivronaeon, MICHIGAN.

CUTTER PIN.

Application filed December 9, 1924. Serial No. 754,808.

This invention relates to improvements in cotter pins and has for. its principal ol ject to provide a simple and efficient means for facilitating the locking of the pin after 5 the same has been inserted in its opening.

The cotter pins now in universal use cause considerable time and labor to be spent in attempting to separate the free ends of the leg members of a cotter pin,

' 1 in order to lock the same in position. One

of the objects of the present invention is to overcome the above disadvantages and insure against the accidental displacement of the cotter pin, from the opening in which the same has been inserted, after it has been locked.

Arfurther object of the invention is to provide a cotter pin of the above mentioned character, which is simple in construction, inexpensive, strong and durable, and further well adapted for the purposes for which it is designated.

Other objects and advantages of this invention will become apparent during the course of the following description.

In the accompanying drawing, forming a part of this specification, and in which like numerals designate like parts throughout the same Figure 1 is a side elevation of the cotter pin embodying my invention, and

Figure 2 is a similar view, showing the 7 same when in its locked position.

In the drawing, wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 designates a cotter pin, the same comprising a single strand or length of wire which is so bent as to provide a pair of substantially parallel leg members 2 and 3, which are integrally joined together by a loop portion 4, the latter being disposed laterally with respect to the leg members as clearly shown in the drawing. 7

The leg 2 is of greater length than the leg 3 and the free end 5 of the longer leg 2 is bent back upon itself to provide the head 6. The free end 5 of the longer leg is disposed over the free end of the shorter leg 3 and is arranged in alignment therewith as is clearly illustrated in Figure 1. The purpose of this construction is to provide a means whereby the cotter pin may be easily inserted within the opening of the member with which the same is adapted to be associated. For the purpose of look ing the cotter pin in position within its opening, any suitable tool, preferably a pair of pliers, is employed for engagement with the head 6 and by moving the same laterally, the free end will be brought out of its normal position over the free end of the shorter arm 3 and permits the free end of the shorter arm to be disposed laterally, in the manner shown in Figure 2, so that the ends of the legs will be separated, and thus secure the cotter pin against displacement, from the opening through which the same extends.

Heretofore, with the cotter pins now universally in use, it was necessary to insert a knife or the like between the free ends of the legs, in order to separate the same whereby the cotter pin could be effectively locked in position within its opening. This necessitated the loss of considerable time and labor, and it is obvious from the construction of the cotter pin illustrated in the present invention that the above disadvantages will be overcome and the cotter pin be easily and efiiciently locked in position after the same has been inserted through the opening of the member with which the cotter pin is adapted to be associated. v

While I have shown the preferred em-' bodiment of my invention, it is to be understood that various changes in the size, shape, and arrangement of parts may be resorted to, without departing from the spirit of the invention and the scope of the appended claim.

I claim A cotter pin comprising a single strand of wire looped intermediate its ends to provide a pair of parallel leg members, one of the leg members being of greater length than the other, the free end of the longer leg member being bent back upon itself and disposed in alinement with the shorter leg member and terminating a slight distance therefrom, the faces of the terminals of the leg members being disposed in spaced parallelism and in planes rectangularly disposed to the axes of the leg members, the bent back portions providing a tool engaging head for facilitating the separating of the free ends and faces of the leg members in divergent relation, said looped portion being disposed laterally with respect to the leg portions toward the side 01 the pin on which the long leg member is disposed so that when the free ends of the leg members are spread apart the pin cannot be accidentally displaced but when it is desired to remove the pin, this may be accomplished by pulling on the looped portion thereby causing the spread apart free ends to come together and to place the bent back portion of the longer leg member in alinement with the shorter leg member.

In testimony whereof I affix my signature.

FRED W. CARLSON.