US544432A - Rotary cutter for woodwork - Google Patents

Description

(No Model.)

G. D. GILLETTE. ROTARY CUTTER FOR WOODWORKING.

Patented Aug. 13,1895.

INVENTOR: I.

$1 ATTORNEY wrmassfis NITED STATES PATENT OFFICE.

GEORGE D. GILLETTE, OF oswEGo, NEW YORK.

ROTARY CUTTER FOR WOODWORKING.

SPECIFICATION formingpart of Letters Patent No. 544,432, dated August 13, 1895.

Application filed April 6, 1895 Serial No. 544,710. (No model.)

To a whom it may concern.-

Be it known that I, GEORGE D. GILLETTE, of Oswego, in the county of Oswego, in the State of New York, have invented new and.

ing heavy cuts of most any desired shape without danger of slivering the wood or heating the cutter by frictional contact with the wood and which shall also present its cuttingedges in such positions as to permit them to be readily ground and sharpened when required without altering the shape of the out subsequently produced in its operation; and to that end the invention consists of a cutterhead having cutting-wings each formed with a front face inclining rearward from the outer end of the wing and beveled uniformly from one side of the wing to the opposite side thereof and reverse from the bevel of the companion wing, all as hereinafter more fully described, and specifically set forth in the claims.

In the annexed drawings, Figure 1 is a detached perspective view of a rotary cutter embodying my invcntion,and Fig. 2 is a side View of two of said cutters mounted on parallel arbors and shaped to form window'shade rollers or other analogous cylindrical bars from a board or bar passing between said cutters.

Arepresents thecutter-head which is formed with the cutting-wings A A and preferably in one piece of steel. 7 Each of these wings is formed with the front face a, inclining rearward from the outer end of the wing. The peripheral facef of the wingis sloped inward from the front face a, and the junction of said faces form the cutting-edge 0.

My invention is more particularly designed for forming in an expeditious and accurate manner cylindrical bars, such as windowshade rollers, curtain-poles, dowels, &c., and for that purpose I form the periphery or outer facefof each wing A with the central longitudinal groove 0 of semicircular shape in cross-section and extending to the front face a and presenting thereat the semicircular shaping-edge c and straight narrow cuttingedges 0 0 at opposite sides of said shapingedge.

By mounting on two parallel rotary mandrels it two sets of the aforesaid cutters disposed contig'uously side by side and of such diameters as to cause the narrow cuttingedges 0 0 of each set of cutters to out halfway through a board passing between the two sets of cutters a plurality of cylindrical sticks are formed in one operation. It will be observed that in this manner I am enabled to manufacture shade-rollers and analogous cylindrical bars far more expeditiously and much cheaper than by the old process of the hollowauger system, which makes only one roller at a time from a previously-square stick.

To effectually guard against slivering the wood and heating the cutter by frictional contact with the wood, as well as to give clearance for the shavings or sawdust, I slope the peripheral faces of the cutting-wings A from the cutting-edges o and 0 0 rearward to a", as shown in Fig. l of the drawings, and I form each of said wings with the side shaving or clearing edge e on the front face a by beveling said face uniformly from one side of the wing to the opposite side thereof, the bevel on one wing being reverse from that on the other wing, as shown. Said front face thus presents all the cutting-edges c c and 0 0 of the wings in such positions as to allow them to be sharpened at one operation by subjecting saidface to the action of the grinding or sharpening tool.

The aforesaid bevel of the front face a causes the cutting-edge c to stand slanting, so as to produce a draw-cut, which obviates the liability of slivering the wood and produces a smooth surface.

What I claim as my invention is 1. The cutter head A having two wings A, each formed with a front face abeveled laterally and reversely to that of the opposite wing so as to have clearing edges e at alternate front side corners, an outer face fgrooved longitudinally and centrally, and a draw-cut cutting edge at the angle be- ICO 00 with the one at the outer end of the clearing edge farther from the center than the other one. and an interposed shaping edge -cat the forward end of said groove, substantially as and for the purpose set forth.

In testimony whereof I have hereunto signed my name this 28th day of March, 1895.

GEORGE 1). GILLETTE. [Ls] Witnesses:

B. W. BURLEIGH, CHAS. A. BENTLEY.

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