US1114525A - Cotter-pin. - Google Patents

Description

S. S. RIDER.

Patented Oct. 20, 1914 UNITED STATES PATENT OFFICE.

SAMUEL S. RIDER, OF'BROOKLAND, DISTRICT OF COLUMBIA, ASSIGNOR OF ONE-HALF TO RICHARD-.13. MILLER, OF WASHINGTON, DISTRICT OF COLUMBIA.

CQTTEB-PIN.

Specification of Letters Patent.

Patented Oct. 20, 1914.

Application filed December 30, 1913. Serial No. 809,492.

the opening through which it is passed to prevent rattling and vibration and also to hold tightly together several parts when the pin is passed through the same.

Briefly stated, the invention comprises a cotter pin, the legs of which are oppositely wedge-shaped, the legs-being connected at one end by an offset loop serving a retaining means for the short leg and providing a flat end for the longer leg which is adapted to he struck so as to wedge the cotter pin in theopening, the legs being provided at their free ends with means for retaining-them in the opening.

Other objects and advantages of this invention will appear from the iollowinr dc tail disclosure of the invention, the saunheing shown in the accompanying sheet of drawings in which 4 Figure 1 is a side cleation of the m|- proved cotter pin loosely inserted in the opening in a piece of metal or the like. Fig. 2 is a similar view but showing the cotter pin after being driven and secured in position in the piece of work. Fig'. 3 is a view similar to Fig. 1 disclosing a slightly modified form of cotter pin. Fig. 4 is a. view similar to Fig. 2 disclosing the modified form of cotter pin secured in position and Fig. 5 is a side elevation of' the cotter pin of Fig. 1 as secured through a pair of metal plates or the like, the plates being disclosed in Section.

Referring to these drawin s, the numeral 10 designates a shaft or other support; hafving a diametrically extending opening therethrough for the reception of a Cotter pin in the usual manner. p

It will he seen from l io's. l and 2 of the drawing that the cotter pin of this invention is madu of a sinole ltflilll of metal if Q overturned upon itself to provide a pair of oppositelypiedgeshapcd legs ll and 12 joined at their upper or inner ends by a laterally otl'set loop 13, providing a fiat head or end 14 to the leg, 12. The loop 13 is connected to the smaller end'of the leg 11 and, as the loop is offset laterally from the legs the loop provides a stop shoulder 15 at the inner end of the leg lladapted for engagement with the support 10 to hold the leg 11 .from moving through and out of the opening in the support. The leg, 12 is considerably longer than the leg ll and extends inwardly a considerable distance beyond the smaller end of the leg 11 so as to'admit of the driving of the leg 12 down in the opening and against the leg 11 and effect arelatively great expansion of the cotter pin. The leg 12, as shown in Fig. 1 normally has its outer or smaller ond projecting heyoinl the outer or enlarged end of the log 11, this extension hcing provided for the purpose of admitting the use of the cotter pin in a tight fitting opening where thelcg 12 can be driven'hut lightly into the opening. This extension, dcsigi'iated 10 in the drawing, is adaptedto he struck with a hammer or the like and h n; m'cr as shown in Fig. 2 after the cotter pin has been wedged in the support.

In the use of, this cotter pin the same is inserted in the opening in the support 10 and the enlarged end of the leg 12 is struck with a hammer. or the like, to drive the leg' lJ'into lhc opening and hind the wedgesha-pcil logs against the walls thereof. As illt let: 1:: moves into the opening the loop l''i.-: llz ttcnc. shown in Fig. and the sto shoulder 15 l ln'nlover at a sharp angle against the support ll). thus insuring the retention of the log ll. As soon as the cotter pin is wedged into the opening, the extension 16 of thelongcr l0; 12 is bent laterally and ahruptly against the support 10, as shown in Fig. 2, \vherchy to prevent the retrartion oi the leg i153 hy vibration or the like. i

in Fig. 5 of (he drawing thenis discloscd. a pair of plates 17 and 18 having an opcnin; torincd thcrcthrough in which is placed the cotter pin. \Vhen the cotter pin is wedged into this opening it is evident that the plates Hand 18 cannot mowor vihratc relatively to one another as the h tter pin is provided with the opp .-sitcl v wcdgrc-shapwl legs which hind equally throughout. the c2:- tirc length of the cotter pin and thus sc curclv hold both the upper and luWtl plates 17 and 18. It is thus seen that this pin may he used for various other uses than a cotter pin, such as a dowel, or any other kind of a pin.

In the modification disclosed in Fig. 3 the cotter pin is given substantially the same form and shape as shown in Figs. 1 and 2, but additional securing means is provided upon the free ends of the legs 11 and 12 for retaining the pin in the support 10. The outer or enlarged end of the leg, 11 is provided with an extension 1-9 joined to the leg 11 by a relatively narrow portion or neck 20, the extension 19 having an inner beveled or inclined face 21 formed at a greater angle to the longitudinal axis of the leg 11 than theinner inclined face'thcreof.

- The extension 16 of the leg 12 is provided with an inner inclined or beveled face normally bearing fiat against the beveled lace .21 of the extension 19, as shown in. Fig. 3.

' The upper end of the extension 16 provides a shoulder 22 atits juncture with the re duced outer end of the leg 12, shown in Figs. 3 and 4, and the upper end of'the inclined face 21 of the extension 19 provides a shoulder 23 by reason of the notch or cut out portion in the leg 11 in the formation of the neck 20.

In the operation of the modified form of cotter pin the head 14 of the leg 12" is struck with a hammer or the like to drive the leg. 12 into the opening and Wedge the legs of the cotter pin therein. As the legs 12 move down into the opening the extension 16" is gradually bent laterally until the shoulder 22 strikes the shoulder 23 when the extension 19 is bent laterally away from the extension 16, and the lower end of "the leg 12 itself is slightly bent away from the neck 20. In order to effect the equal spreading or bending of the extension 19 and the lower end of the leg 12, the neck or reduced portion 20 of the leg 11 is given a thickness equal only to the thickness of the lower end of the leg' 12 so that the resistance to the bending of the two legs at that point will be equal. t

It is to be understood that the above described embodiment of-my invention is only one form thereof, and that various changes may be made in the details of structure without departing from the spirit of this invention, the changes being limited only by the scope, of the following claims.

What is claimed is- 1. A cotter pin comprising a loop termithroughout the entire length of the openiereby upon the relative movement of ing w the legs to bind the latter in the opening throughout its entire length, the free end of the driven leg being adapted to be turned over to retain the cotter pin in the opening.

3. A cotter pin comprising a loop terminating in a pair of legs adapted for insertion in an opening and being'oppositely wedgeshaped or tapered longitudinally whereby to bind the legs against the walls of the opening when the legs are moved relatively to one another, and projections on the outer ends of the legs having their abutting faces inclined to the plane of the abutting faces of the legs whereby to provide a shoulder on one of the projections, the opposite projection having a notch in its abutting face providing a shoulder for engagement against said shoulder of the first projection, where by to spreadsaid projections and secure the pin in place.

4. A cotter pin havinga pair of legs for insertion through an opening and being oppositely wedge-shaped or tapered longitudinally whereby to bind the legs against the opposite walls of the opening, and projections on the outer ends of the legs provided with abutting faces inclined to the plane of the abutting faces of the legs whereby to provide a shoulder upon one of the projections, the opposite projection having a notch in its abutting face providing a" shoulder therein below the shoulder-of the first projection, said legs being adapted to be moved relatively to one another whereby said shoulders are adapted to engage and spread the projections to lock the pin in place.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

,SAMUEL s. RIDER.

Witnesses:

Geirrnnon M. S'rnoxnn, Jos. J. MAwmNNnY.

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