US615251A - Rosette-cutting bit - Google Patents

Description

No. 6I5,25l. Patented Dec. 6, I898. A. W. COOPER.

ROSETTE CUTTING BIT.

(Application filed May 3, 1898.)

(No Model.)

NITED STATES 10* FFI-oE.

PATENT ALFRED w. COOPER,- OF JUMPING BRANCH, WEST VIRGINIA, AssIeNoR or ONE-HALF'TO JAMES H. MILLER, OF HINTON, WEST VIRGINIA.

ROSETTE-CUTTING BIT.

SPECIFICATION forming part of Letters Patent No. 615,251, dated December 6, 1898. V

Application filed May 3, 1898. Serial No. 679,607. (No model.)

To all whom it may concern.-

Be it known that I, ALFRED W. COOPER,.a citizen of the United States, residing at J umping Branch, in the county of Summers and State of West Virginia, have invented a new and useful Rosette-Cutting Bit, of which the following is a specification.

This invention relates to that class of woodworking implements designedto bore or cut rosettes or corner-pieces, the object of the invention being to generally improve the con-' struction and operation of such devices,whereby the manufacture of rosettes will be facilitated and a better smoother class of work turned out. I

With this object in view my invention consists in a rosette-cutting bit for use with a hand-brace or upon a woodworking-machine, comprising a stem which in the hand-working device is fitted into the chuck of the bit and which in the machine-working device is fitted in the end of a rapidly-rotating shaft, said stem being slotted at its outer end to receive a cutting-bit of peculiar construction secured in the slot by novel means, substantially as hereinafter fully described and afterward specifically pointed out in the claims.

In order to enable others skilled in the art to which my invention most nearly appertains to make and use the same, I will now proceed to describe its construction and operation, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a perspective view illustrating the rosette-cutting bit constructed in accordance with my invention. Fig. 2 is a central section through the same, the upper end of the stem being broken away. Fig. 3 is a section taken on the plane indicated by the broken line 3 3 of Fig. 2. Fig. 4t is a detail perspective view of the bit or cutter removed from the stem. Fig. 5 is a plan view on a reduced scale of a rosette or'corner-piece produced by the operation of my invention.

Like letters of reference mark the same parts wherever they occur throughout the various figures of the drawings.

Referring to the drawings by letters, A indicates the stem, which is illustrated as being provided with an angular end B to fit in the chuck of a hand-brace; but it will be understood that when the bit is to be used upon a machine the stem A will be properly constructedto be coupled or clutched to the end of the cutter-shaft of the machine. The forward end of the stem A is notched, forming a recessto receive the central portion 0 of the bit E, the .inner wall of the notch or recess being diagonally grooved and one side of thecentral portion C of the bit being provided with a like diagonal groove D, which when the bit is placed in a recess in'the end of the stem will register with the diagonal groove in the inner wall ofthe recess of the stem and form a diagonal socket to receive a bar E,

the cutting edges and smoothing-surfaces being arranged upon opposite sides of the point F at .proper distances, whereby the cut made by the cutting edges G and H during the rotation of the bit will be continually smoothed by the inclined curved smoothing-surfaces I and J, as described; The bar E may be secured in the diagonal socket by means of a pin K, and a pin or screw L (shown in dotted lines in Fig. 3) passes through one side of the stem into the central portion 0 of the bit.

The construction and operation of my invention will be readily understood from the foregoing, and while I have illustrated and described in detail What I now consider to be the best means for carrying out my invention I do not wish to be understood as restricting myself to the exact forms and constructions shown, but hold that any slight variation therefrom, such as might suggest itself to the ordinary mechanic, would properly fall within the limit and scope of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A rosette cutting bit provided with curved cutting edges on one side of the center and curved inclined rubbing or smooth-- ing surfaces correspondingly located upon the opposite side of the center, in combination with a stem recessed in its outer end to receive the bit, and means for securing it therein, substantially as described.

2. The combination with the stem A provided with the end recess having the inclined groove in one wall thereof, with the cutter E provided with the central portion C to enter said recess and with the inclined groove D registering with the inclined groove in the Wall of the recess in the stem A'and forming an inclined socket, and the inclined bar E seated in said socket and provided with a projecting point F, substantially as described.

3. The combination with the stem A pro Vided with the end recess, the bit E formed with curved cutting edges G and H, inclined smoothing-surfaces I and J and a central p01 tion 0 to enter the recess in the stem A, the inner Wall of the recess of the stem A and the central portion 0 of the cutter E being provided with registering inclined grooves forming,\vhen brought togetheigan inclined socket, the inclined bar E seated in said socket and provided with the point F and the pins or screws K and L for securing the parts together, substantially as described.

ALFRED V. COOPER. Witnesses:

L. M. NEELY, Jr., J. H. JORDAN.

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