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Publication numberUS273806 A
Publication typeGrant
Publication dateMar 13, 1883
Filing dateJan 12, 1883
Publication numberUS 273806 A, US 273806A, US-A-273806, US273806 A, US273806A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Machine for making wooden rings
US 273806 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.) 2 Sheets-Sheet 1.


MAGHINB POR MAKING WOODEN RINGS. No. 273,806. Patented Mar. 13,1883.

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SPECIFICATION forming part of Letters Patent No. 273,806, dated March 13, 1883.

Application iiled January 12, 1883. (No model.)

To all whom it may concer/ii:

Be it known that I, REED V. Boron, ot' Toledo, in the county of Lucas and bta-te of Ohio, have invented an Improved Machine for Making \Vooden Curtain-Rings, of which the following is a specitication, reference being had to the accompanying drawings, in which- Figure l is a front elevation, partly in sec- Fig. 2 is a side elevation, partly in section. Fig. 3 is a top view of the table partly broken away. Figs. et, 5, 6, and 7 are ditt'erent views ot' the cutter-head, showing' its various parts. Fig. 8 shows a blank board or strip bored and ready for the operation ot' the inachine. Fig. 9 shows the saine after having passed through the machine. Fig. l0 is a cross-section through the blank after having been cut oii one side, and Fig. 1I shows the saine at'ter having been cut on both sides.

The main object of my improved machine is to rapidly and economically cut curtain-rings, with as little waste as may be, from suitable strips of board.

Referring to the letters upon the drawings, A indicates a suitable main frame, to the back part of which are sei-tired two posts, B, or other equivalent means for supporting the bearings ot' a vertical arbor, O, provided with a bandpulley, D, or other suitable means for revolving it, and carrying at its lower end a detachable cutter-head, E.

Fitting within the main frame is a verticallyreciprocating frame, F, carrying a table, G, and capable of being suitably elevated by means ot' an ordinary foot-lever, H.

I provide anti-friction wheels I within the sides ot the main frame, grooved in their peripheries, and also provide the sides ot' the reciprocating frame with guideways or tracks K, fitting in the grooves of the anti-friction wheels and constituting the bearing-surfaces of the reciprocating frame, whereby friction is reduced to a minimum and the reciprocating traine is guided accurately in its movements.

The table is provided with a small hole, L, concentric with the axis ot' the arbor C, and with two parallel guideways, M. These guideways may be secured with screws or otherwise to the top of the table, so that they can be shitted laterally to bring them closer together or fariher apart, according to the size ot' rings desired to be out.

The cutter-head E is attached to the arbor C in any suitable manner so as to be readily detachable, but preferably, as illustrated in the drawings, by means ofa shank fitting within a socket in the arbor concentric with its axis. The lower end of the cutter-head is dish-shaped or cup-shaped, and provided with one or more inclined seats, N, to which one or more cutters, O, are secured by means of setscrews I. These cutters preferably straddlc the set-screws, as shown, and are adjustable up and down to regulate the depth of cut. Their cutting-edges are ot' course semicircular when they are designed for cutting curtainrings; but when designed for cutting circular grooves of any` kind or rings having small circular grooves or projections their cutting-edges may be varied accordingly. The bottom ot the cutter-head is provided with a semiciicular groove, Q, or with any other conformation, to correspond with the outlines of the cuttingedges of' the cutters. The result will be that the cutting-edges will project at all points equally below the bottom of the cutter-head and operate as the blade of a plane operates with reference to the bottom of the plane, and the thickness ofthe shaving cut may be regulated by setting the cutters up or down as the blade of a plane is set by a carpenter. The cutter-head is also provided with a shoulder or stop, x, to limit the depth of cut, which it does by bearing against the stock outside of the cutters whenever a cut sufficiently deepis made.

Projecting from the center of the cup of the cutter-head is a pin, R, provided with a coiled spring, S, the pin being preferably pointed 0r conical at its lower end.

The blank shown in Fig. S is provided with holes T, of a size to admit the pin R, and ofthe proper distance apart to permit the rings to be cut without waste of the stock. Such a blank is placed upon the table between the guideways M, its tirst hole being about coincident with the hole L in the table, which will bring it substantially in line with the axis ol' the center-pin R. 4

The cutters being properly adjusted and the cutter-head being in rapid revolution through power applied to the arbor O, the operator places his foot upon the foot-lever H and raises the reciprocating frame and table, carrying up ICU 1o hole through. the stock.

2 yerases the stock, and the center-pin passes through y the rst hole T, and the cutters rapidly do 5 ragainst the cutters until the limit of their cut is reached. rllhe pressure of the foot is ,then withdrawn, and the table carrying the stock drops down out otl reach of the cutter-head, the coil-spring S aiding to release the pin from the The blank is then slid forward until the next hole T is in position. Another cutting operation is then performed,and so on t0 the end ofthe blank. The blank is then turned over and cut upon the opposite side in the same manner, the

depth ot' cuts being such as to substantially sever the rings from the board. The conical point ot the center-pin serves to facilitate the centering ofthe stock, because as the stock is zo raised up the pin wedges or pushes it slightly endwise, as may be necessary to exactly center it.

I do not in this application claim the cutter head herein described, but have reserved it for z5 patent in a separate application.

Having thus` described my invention, wh at I claim to be new, and desire to secure by Letters Patent ot' the United States,lis as follows, to wit: A

1. The combination of the main frame A, the vertical1yr-reciprocating frame F, the foot-lever H, the horizontal table provided with the parallel guideways M, the vertical arbor U, and the detachable cup-shaped cutter-head E, provided with av center-pin, R, these parts being constructed, organized, and operating together substantially as and for the purposes set t'Orth.'

2. The combination ofthe main frame A, the vertically-reciprocating traine F, the foot-lever H, the grooved an ti-fricticn wheels I, and guideways K, the horizontal table provided with the parallel guideways M, the vertical arbor C, and the detachable cup-shaped cutter-head E, provided With a center-pin, R, these parts heilig constructed, organized, and ope-rating together substantially as and for the purposes set forth.

In testimony whereof I have hereunto sub-- scribed my name.

anni) V. BoicE.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4739750 *Jul 21, 1986Apr 26, 1988Andre MasseRasp for preparing the medullary canal of a bone for receiving a prothesis
US4777942 *Sep 24, 1987Oct 18, 1988Sulzer Brothers LimitedBone milling instrument
Cooperative ClassificationB23Q1/4804