US1302287A

US1302287A - Cotter-pin puller.

Info

Publication number: US1302287A
Application number: US3716915A
Authority: US
Inventors: Gustaf A Berg
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-06-30
Filing date: 1915-06-30
Publication date: 1919-04-29
Anticipated expiration: 1936-04-29

Description

G.'A. BERG.

CUTTER PIN FULLER. APPLICATION FILED JUNE 30-1915.

Patented Apr. 29,1919.

men

GUSTAE ll. BERG, OF CHICAGO, ILLINOIEL CUTTER-PIN FULLER.

Specification of Letters Patent.

Patented Apr. as, role.

Application filed June 30, 1915. Serial No. 37,189.

This invention relates to a novel tool designed more especially for removing cotter pins from their seats in various kinds of machinery. and also adapted to spread the members of the cotter pin atter it has been inserted in its seat.

The object of the invention is to provide an exceedingly simple tool for this purpose which may be produced at small cost and which is light to handle. V

A further object of the invention is to provide a tool for this purpose which may be used in close work or work where the cot ter pin or other part to be manipulated lies very closely adjacent to the surrounding parts of the machine or device so as to preclude the use of pliers or like 'ices' for pulling or prying the cotter pin out of place.

A further object of the. invention is to provide, in a compact and light tool. means for exerting heavy hammer thrusts on the cotter pin or the like.

The invention consists in the combination and arrangementof the parts shown in the drawings and described in the specification.

Tn the drawings:

. Figure l is a side elevation of a tool embodying my invention showing the handle in full and dotted lines in two positions which it assumes in its use. I

Fig. 2 is a cross section through the hammer and shank of the tool.

Fig. 3 is a fragmentary perspective view illustrating the manner of applying the tool to a cotter pin to remove same.

Fig. 4. is a similar view illustrating the manner of spreading the members of the cot ter pin. after said pin has been seated.

The tool herein shown embodying my invention embraces an elongated shank 10 provided-at one end with 2. turned over portion or hook 11 and provided at its other end with a head 12. The said shank may be made of steel or other metal possessin the required strength and durability an the head 12 may be formed on the shank 'by an lip-setting operation or may be separately made and fixed to the shank, as desired 14 designates a handle which is slidable on the shank 10 between the hooked end 11 and the head 12. Said handle preferably has the form of an elongated tubular hand piece, with the axial opening 15 thereof of a size to fit loosely over the shank, so that it may slip easily thereover in the direction of the axis of the shank. The hand piece may be grooved or otherwise roughened to enable it to be manipulated by the hand without slipping. It may he made of east or malleable iron or other material of suitable weight and hardness to act as a hammer.

The said handle is fitted to the shank so as to be non-rotative thereon whereby the pointed end of the tool may he. directed to the work by grasping the hand piece, the shank being capable of being turned with the handle by reason of the non-rotative engagement of the handle therewith. As herein shown this non-rotative engagen-ient ot' the handle with the shank consists in making the shank polygonal in cross section (square as herein shown) and by making the axial opening of the handle of like cross section and. as before stated, of somewhat larger diameter. than the external diameter of the h k. Obviously such non-rotative engagement between the handle and shank may he efl'ected in various ways as. for instance. by means of a key and key way or by flattening a rbund or oval shank and correspondingly forming the opening in the handle.

,The turned over r hooked portion ll of the tool is preterahiy arranged at an angle to the shank slighllyless than a right an-- draw larger cotter pins. By reason of the 'mented by turning the its, the

fact that the handle is non-rotatirely engagged With the shank of the tool the cotter pin, after being engaged by the hook may be turned in its seat to facilitate the with draWal of said pin. In forming the hook the end of the shank may be pointed by a suitably shaped tool. Thereafter the handie is slipped over t 1e shank and finally the, hook is turned down to the position shown in Fig. 1, as for instance, by the aid of a suitable bending die.

The operation of the tool to Withdraw a cotter pin is illustrated in Fig. When the hooked end of the tool is engaged Witlr the eye of the cotter pin the handle is shift-- ed toward the cotter pin and thereafter is forced against the head 12 so as to produce a hammer thrust on the cotter pin to With-- draw it from its seat. As before stated, the hammer action of the tool may be supple cotter pin in its seat to close the separated or spread members oil? the pin to permit the pin to be Withdrawn from the opening in which it is seated.

By reason of the fact that the entire tool may be directed by the hand which grasps the handle, theoperation of Withdmwinp; the cotter pin may be readily ell'ected by a Single hand of thepersou using the tool. y reason of the further fact that the ad Vance or hooked end of the tool is small, said tool may be inserted into places difficult of access to tools heretofore used in Withdrawing cotter pins and like devices In F ig. 4 is shovn the manner in which the members of the cotter pin may be opened after the pin has been inserted into its seat. This opening operation is facili tated, as will be obvious, by sharply pointing the end of the hook, whereby it may be readily inserted between the members of the pin to spread them.

It will be understood that the invention is capable of some variations from the illus trated embodiment shown a d described within the spirit rod member having a hook formed at one end'for engagement with the eye of a cotter pin and having an abutment formed at the other end, and an impact member through which the rod member passes and which is movable longitudinally from said abutment to the hooked end, whereby a cotter pin may be inserted by successive impacts upon its head or Withdrawn by successive impacts against the abutment.

2. A cotter pin prising an elongated shank provided at one end With a head and at its other end With a hook and a member having an opening loosely and nonrotatively fit over said shank to constitute a ha miner cussi e force on the-head to attest the Withdrawal of a cotter pin, and to also constitute a hand piece to direct the tool and to rotate the shank and hook. v 1

3. A cotter pin puller and spreader com prising an elongated shank provided at one end with a head and at. its other end With a hook and a member having; an opening to loosely and non-rotatively fit over said shank to constitute a hammer to exert percussive force on the head to effect the Withdrawal of a cotter pin, and to also constitute a hand piece to direct the tool and to rotate the shank and hook, said hook being disposed at an acute angle to the shank and being pointed at its end and gradually enlarged toward its junction With the shank.

In testin'iony that I claim the foregoing as my invention I a x my signature in the presence of two Witnesses, this 525th day oi June, A. D. 1915.

GUSTAF A. BERT V fltnesses W. l1. HALL, G. E. Dower.

puller and spreader'comi to exert per-