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Publication numberUS1064493 A
Publication typeGrant
Publication dateJun 10, 1913
Filing dateJun 29, 1912
Priority dateJun 29, 1912
Publication numberUS 1064493 A, US 1064493A, US-A-1064493, US1064493 A, US1064493A
InventorsEdward Kropat
Original AssigneeEdward Kropat
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1064493 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



ArrLIoATIoN FILED JUNE 29, 1912.

1,054,493, Patented .1m 1o, 1913.



Application filed ,Tune 29, 1912.

To all fio/mm t mo/ z/ concern lie it known that l, EDWARD Knorar, a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have .invented new and useful improvements in rfool-Handles, of which the following is a specification.

rllhis invention relates to a handle for knife blades, cornering tools, or some such tools which have a straight, Vliat shank, the primary object being to provide a handle having a central opening or slot adapted to receive the shank of the tool and in which the said shank may bc removably secured, thus making the device adaptable for use with any one of the above described tools.

A further objectof the invention is the provision of a handle which is simply constructed, and in which the means for fastening the tool shank in position is readily operable and effective in its operation.

The invention consists of the features of construction, combination and arrangement of parts, hereinafter fully described and claimed, reference being had to the accompanying drawings, in which Figure 1 is a plan View showing a knife blade mounted within the handle. Fig. 2 is a longitudinal sectional view taken on the line 2 2 of Fig. l. Fig. 3 is a plan view of the device showing a cornering tool attached to the handle and the locking ferrule in position. TEig. 4 is a longitudinal sectional view of the locking ferrule. Fig. 5 is a transverse sectional view of the locking ferrule and the end of the handle body. Fig. G is a fragmentary view of the handle body with the locking ferrule detached.

ln the drawing', 1 designates the body of the handle which is centrallyT provided with a longitudinal openingl or slot 2, for the reception of the straight, flat shank 3 of the tool, which latter may be a knife blade 4l. a cornering tool 5, or some such instrument. One end of the body is reduced until the sides of the slot 2 open into the side of this reduced portion and is provided with a fixed ferrule G completely covering the different sides of the said slot. The opposite end of the body is similarly reduced for a short distance, the sides of this end of the slot 2 thus opening into the cylindrical outer face 7 of this reduced portion S. A semi-circumforential Specification of Letters Patent.

Paten ted June ttt, i 9E 3.

serial No. 708,702.

groove opens medially into one side of the f slot il and provided at one end with a decided shoulder 10 for a purpose more fully hereinafter described. rlhe shank portion S of each tool is provided in one longitudinal edge thereof with a plurality of spaced notches 11, one of said notches being adapted to register with the groove 9 in the reduced portion 8 of the body when the said shank is inserted in position within the central slot 2. A. movable ferrule 12 is rotatably mounted on the reduced end 8 of the body so that a semi circun'iferential, in struek boss 13 formed in the said ferrule is received within the corresponding groove in the reduced portion of the said body. rlhe end of this boss corresponding to the end of the groove S) having the shoulder 10 is enlarged, as at 141, and the boss 13 is gradually reduced or tapered toward its opposite end 15. 1When the ferrule is turned so that the enlarged end 14 of the boss 13 is in engagement with the shoulder 10 of the groove 9, the body port-ion of the boss is free from the edge of the body slot 2, thus permitting insertion of the tool shank, or removal thereof. Vhen the tool shank is in position with one of its notches in alinement with the semi-circumferential groove 9, the ferrule may be turned so as to bring' the boss 13 into engagement with the said notch, and, the said boss being tapered, the boss has a we dging tendency which positively locks the tool shank in position.

Vllhat is claimed is:

1. The combination with a tool having a tlat, straight edge thereof with spaced notches, of a handle therefor comprising a body having a longitudinal slot adapted to receive said shank, said slot opening into the sides of the body at one end thereof, this end of the body having a semi-circumferential groove communicating medially with one side of the slot, a ferrule rotatably mounted on said end of the body, and an instruck boss formed in said ferrule and movable in the body groove for locking engagement with one of the tool shank notches.

Q. The combination with a tool having a. shank provided with a transverse notch, of a handle therefor comprising a body having a longitudinal slot adapted to receive said shank, the said slot opening through the sides of the body at one end thereof, this end of the body being provided with u Semigroove and for engagement Within the notch circumferential groove communicating meof the tool shank. 10 dially with one Side of the slot, a ierruie ro- In testimony whereof I affix my signature tutably mounted upon one end ot the body, in presence of two Witnesses.

an instruek tapered boss formed on the inner EDVARD KROPAT. periphery of said ferrule and extending Titnessesz semi-Cireumferentially, the Said boss being ALBERT YANKE,

adapted for movement Within the body CARL GIHORKL Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4020555 *Apr 12, 1976May 3, 1977Pevrick Engineering Co., Inc.Connecting mechanism for a saw blade
US5263972 *Dec 11, 1992Nov 23, 1993Stryker CorporationSurgical handpiece chuck and blade
US5439472 *Jul 14, 1993Aug 8, 1995Stryker CorporationSurgical handpiece chuck and blade
US5468247 *Oct 19, 1994Nov 21, 1995Stryker CorporationSaw blade for powered medical handpiece
US5702415 *Sep 8, 1995Dec 30, 1997Stryker CorporationChuck and blade for powered medical handpiece
U.S. Classification279/81, 30/320
Cooperative ClassificationB23B31/1071