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Publication numberUS1403919 A
Publication typeGrant
Publication dateJan 17, 1922
Filing dateMay 5, 1921
Priority dateMay 5, 1921
Publication numberUS 1403919 A, US 1403919A, US-A-1403919, US1403919 A, US1403919A
InventorsBruno Seppmann Alfred
Original AssigneeBruno Seppmann Alfred
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cotter-key puller
US 1403919 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patented Jan. 17, 1922.



Application filed May 5, 1921.

T 0 all whom it may concern:

Be it known that I, ALFRED BRUNo Snrr- MANN, a citizen of the United States, residing at Lake Crystal, in the county of Blue Earth, State of Minnesota, have invented a removed from positions on machinery wherethe same cannot be reached by means of conventional tools, such for instance aspliers. Also to provide a tool by means of which a cotter key can be removed even when the eye of the cotter key extends in a direction away'from the operator, thereby providing a tool applicable to the varying conditions under which cotter keys have to be removed.

A further object is to provide a cotter key puller comprised of a shank and ahandle member, said shank having slideably mounted tlhereon between abutments a hammering element by means of which hammering element and abutments a downward or upward movement of the shank may be obtained for pushing or pulling a cotter key from its position.

A further object is to provide the lower end of the shank with an outwardly and upwardly curved horn for engaging in the eye of the cotter key during a cotter key pulling operation. Also to provide the lower end of the shank with an outwardly and downwardly extending horn adapted to be disposed in the eye of the cotter key when said eye is disposed away from the operator and a downward movement of the tool as a w ole is necessary to remove the key.

I ith the above and other objects in view, the invention resides in the combination and arrangement of parts as hereinafter set forth, showing the drawings, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings:

Figure 1 is a side elevation of the cotter key remover.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Serial No. 467,162.

Figure 2 is an enlarged sectional View through the slideable hammer.

Figure 3 is a horizontal sectional view taken on the line 3-3 of Figure -1;

Referring to the drawings, the numeral 1 designates the handle of the tool, and 2 the shank carried thereby; the shank 2 may be of any length desired so that it will easily reach various parts of an engine. The lower end of the shank 2 is provided with an outwardly and upwardly curved integral horn 3 which engages the eye 4 of a cotter key 5 when said ke is being pulled. Horn 3 is particularly a aptedfor removing cotter keys when the eye of the key \extends in the direction of the operator. owever, at times the eye does not extend in the direction of the operator but on the contrary extends away from the operator. When the eye extends away from the operator, the horn 6 which extends outwardly and downwardly is placed in engagement with the eye 4 of the cotter key in such a manner that upon a movement of the shank 2 in the direction of the arrow a the cotter key will be forced from its position. However, when the cotter key is in the position shown in Figure 1, the action is substantially a pulling one and the shank 2 is. moved in the direction of the arrow 12.

It has been found that cotter keys become stuck incident to corrosion and from other causes,'therefore, they cannot be removed by simply a pulling or pushing action on the tool and require a hammering action to break the corrosion and where the end of the key has been spread to bend the arms of the end to normal position. To accomplish this result, the shank 2 is provided with spaced abutments 7 and 8 and between which abutments a slideable hammer 9 is mounted on shaft 2. During a cotter key removing operation, the operator grasps the handle 1 wlth one hand and with the other hand reciprocates the hammer 9 on theshank 2. During the reciprocation of the hammer 9 a hammering action is imparted on the abutment 7 or 8 according to the direction it is desired to move the shank. This hammering action starts the key from the aperture in which it is disposed and quickly removes the key without bending or destroying the same.

From the above, it will be seen that a cotter key remover is provided which is simple in construction and one wherein the carried by the shank, and a slideable hammer parts are reduced to a minimum. member slideably mounted on the shank and The invention having been set forth what disposed between said abutments. is claimed as new and useful is; Intestimony whereof I have signed my 5 A cotter key remover comprising a handle name to this specilication in the presence of 15 member and a shank, key engaging arms two subscrlbm witnesses.

carried by the lower end of said shank, one ALFR D BRUNO SEPPMAN-N. of said arms extending outwardly and curv- Witnesses: ing upwardly, the other arm extending out- T. K. MEAGHER,

10 wardly and downwardly, spaced'abutments A. E. QUIM'BY.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2779089 *Oct 20, 1952Jan 29, 1957Allen Leo GPuller tool having a manually operated sliding hammer
US5109739 *Mar 22, 1991May 5, 1992Hull Harold LSlide hammer tool
US5245737 *Sep 21, 1992Sep 21, 1993Perea Charles RCotter pin extractor kit apparatus
US8327516Mar 17, 2010Dec 11, 2012Summit Tool CompanyValve punch tool
U.S. Classification29/247, 29/254, 29/255
International ClassificationB25B27/02, B25B27/08
Cooperative ClassificationB25B27/08
European ClassificationB25B27/08