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Publication numberUS1721378 A
Publication typeGrant
Publication dateJul 16, 1929
Filing dateApr 30, 1928
Priority dateApr 30, 1928
Publication numberUS 1721378 A, US 1721378A, US-A-1721378, US1721378 A, US1721378A
InventorsDraeger Gustave J
Original AssigneeDraeger Gustave J
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Floating-tool holder
US 1721378 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

July 16, 1929. i I J, DRAEGER 1,721,378

FLOATING TOOL HOLDER Filed April 30, 1928 smut Gustav JDraeger er ii.



I Application filed April 30,

My invention relates to a floating tool holder, and it is an object of the invention to provide a simple and inexpensive device of this character which will conform to a slight misalignment of the work and'perform satisfactorily cutting operations, all as will be hereinafter more particularly described and claimed.

Referring to the accompanying drawings which are madea part hereof and on which similar reference characters indicate similar parts,

Figure 1 is a top plan view, illustrating one application of my invention,

Figure 2, a side elevation, V

Figure 3, a view taken on a line 33 of Figure 1, V

Figure 4, a transverse section taken on line 4-4:, Figure 1, and

Figure 5, a perspective of the tool holder,

In the drawings, reference character 10 mdicates a head having an integrally formed shank 11 adapted to be engaged by the machine in which the device is detachably carried. The head 10 is provided with a trans verse tapered slot at its front end which forms a pair of opposed projecting members 12 between which is adapted to be inserted the end of a rod not shown, which is adapted to-be operated upon. The head 10 tapers to the forward extremities of each of the members 12 on the top and bottom of the same, and said head is provided with a slot 13 disposed at right angles to the members 12 for the reception of the floating tool holder 14, shown in Figure 5. This floating tool holder is recessed or slotted in the center to provide side members 15 and 16, having tapered inner edges, said side members being also provided with recesses for the reception of loosely mounted, or floating, cutters 17 and 18, which are held in place by screws 19. The heads of the screws 19 are located in transverse depressions or recesses 20 in the side members 15 and 16, such depressions 20 being slightly elongated to permit a slight sliding movement of the cutters. Adjusting screws 21 are threaded through the back of the members 15 and 16 for engaging the rear edge of the cutters for holding them in proper adjust-ed position. The holder 14 is provided with a tapered opening 22 for the reception of a screw 23 for holding the member 1 1 in position in the head '10, said screw having a tapered portion 24 for cooperation with the tapered opening 22 forholding the parts 1928. Serial No. 274,147.

m sts "s.

in the proper assembled relation, said screw having its reduced portion threaded into one side ofthe head as shown. With the above construction the cutters 1'? and 18 are maintained in the proper fixed spaced relation by their holder, which permitted to slightly pivot on its holding screw 23 to thus perform accurately the operation of cutting the work to the proper size.

It will be understood from the above that I I have provided'a head, the shank of which is adapted to be firmly secured in a rotating support, and between the opposed members 12 is adapted to be inserted the extremity of a rod which is intended tobe cut tothree different diameters the smaller of which is adapted to v be threaded. In order to form the cutting operation accurately no matter if the parts are slightly out-of alignment the cutters are carried in fixed relation in the transverse memher 1 1 which may rock on the screw 23 as a pivot which screw extends through the tapered opening 22, the cutters being of course adjustable toward and from each other as described, for varying the diameters out, the inner portion of the member 22 serving as'a stop for terminating the cutting operation.

It will be obvious to those skilled in the art that various changes may be made in my device without departing from the spirit of the invention, and I, therefore, do not limit myself to what is shown in the drawings and described in the specification, but only as set forthin the appended claims.

Having thus fully described my said in vention, what I claim as new and desire to secure by Letters Patent, is:

1. In a device of the class described the receiving recess, an opening through the head disposed transversely of the work receiving recess, a cutter holder pivotally' disposed in said transverserecess and adapted to move about its pivot in order to conform to the work and forming opposed jaws on opposite sides of the work, and cutters pivoted in opposed relation on said jaws of the cutter holder saidcutters having inwardly extending cutting edges, substantially asset forth.

2. The combinationof a cutter head adapted to be mounted in a rotary support said head being formed with a recess for receiving the work operated upon,'an opening through the head substantially at right angles to the work receiving recess for accommodating a floating cutter holder, a cutter holder pivoted in said opening movable about its pivot in order to conform to the work said cutter holder having a work receiving recess and inwardly projecting opposed cutters carried by the the head substantially at right angles to the Work receiving recess for accommodating a floating cutter holder, a cutter holder pivoted in said opening movable about its pivot in order to conform to the work said cutter holder having a work receiving recess and inwardly projecting opposed cutters carried by the cut ter holder on opposite sidesof the recess for operating upon the exterior of work presented in said recesses, said cutters being provided forwardly ofit-s pivot, forming aws for disposal on opposite sides of the work said jaws being provided with recesses disposed on opposite faces of the holder, and opposed cutters disposed in said recessesand provided with stepped cutting portions, the bottom of the recess between the opposed jaws being adapted to limit the movement of the work'between the cutting portions, substantially as set forth.

In witness whereof, I have hereunto set-my hand at Racine, Wisconsin, this 23rd day of April, A. D. nineteen hundred and twentyeight.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2816352 *May 11, 1954Dec 17, 1957Andler Otto ATool
US5054972 *May 15, 1990Oct 8, 1991Cooney Kevin GRotary tool for sharpening studs in snowmobile treads
US5190548 *Apr 10, 1991Mar 2, 1993Linvatec CorporationSurgical reamer
US5755815 *Jun 10, 1996May 26, 1998Carbon Tool & Manufacturing, Inc.Cutting tool
US6761514 *Oct 19, 2001Jul 13, 2004Master Tool CorporationHollow mill tool
U.S. Classification408/89, 470/66, 408/203.5, 470/65, 279/18, 184/11.1, 408/224
International ClassificationB23B29/24
Cooperative ClassificationB23B29/248
European ClassificationB23B29/24D