US164718A - Improvement in machines for tenoning spokes - Google Patents

Description

1. R. COLEMAN el s. MYERS.

Machine forl Tenunng Spokes. N0. wil-718, Patented .\une22,1875` Fay. 7

UNITED SfrA'rns JOSHUA It. COLEMAN AND SAMUEL MYERS, OF GALION, OHIOl IMPROVEMENT IN MACHINES FOR TENONING SAPOKES.

Speciication forming part of Letters Patent No. lll, dated June 22, 1875; application filed March l, 1875.

To all whom it may concern:

Beit known that we, JosHUA R. COLEMAN and SAMUEL MYERS, of Galion, in the county of Crawford and State of Ohio, have invented an Improvement in Machines for Tenonin g Spokes, of which the following is a speciiication:

In the accompanying drawing, Figure l represents a sectional side elevation of our iniproved spoketenoning machine; Fig. 2, a perspective view of the cutter-head detached 5 Fig. 3, a vertical transverse section of the spoke-clamping device, taken on the line c c, Fig. l; and Fig. 4, detail perspective views of the adjustable cutting-knives.

Similar letters of reference indicate corresponding parts.

In our improved machine the spoke is accurately centered in relation to the cutter-head by means of angular clampin g-plates operated by right and left screw-threaded shafts. The jaws of the cutter-head have angular faces, which bear upon the tenon, whatever be its form or size, at four different points, thereby supporting and steadying it under the action ofthe cutters. The crank-shaft, which rotates the cutter-head, works in the tubular stem of lthe cutter-head, anda burr or screw-collar determines their relative adjustment, and there- .l angular lengthwise channel in its inner side,

so that when the plates are clamped upon a spoke they will have cach two points ot' contact with the spoke, whereas in other machines of this class there is but one point of contact. The plates B B' are likewise caused to advance toward or recede from each other in equal degree. The result of this construction and arrangement of the plates B B is that the spokes are severally clamped more firmly, and more Yaccurately centered with relation to the cutter-head than in other machines, whose clamping-plates have inner faces which are sections of an oval or an ellipse, and but one of which is movable. lllleshing spur-gears f1 are keyed on the heads of shafts e, and one of the latter is operated by a crank. The auger or cutter-head C, that tenons the ends of the spokes after the machine has been fastened, as described, slides by a hollow stem, D, in the tubular guide part c of main frame A. The stem D is fed forward and backward by an internal scrcwthread fitting on the threaded shaft D1 of main crank-lever D2. Stem D is cast or otherwise provided with extension arms or lugs f at opposite sides, which are slotted to allow the adjustment of the cutterjaws E. Jaws E are shown in perspective view in Fig. 2, the cutting-knives ij being attached in an adjustable manner to the guide` recesses and slotted bearings g1 of the same, and iirmly set in the required position by clamp-screws f2. rlhe inner faces of the jaws E have an angular forni corresponding to clamping-plates B Bf; hence the spoke-tenon is held steady under the action of the cutters, there being four points of contact between it and the jaws E instead of two, as in other machines. Stem D has also two strong project ing parts,f1, which extend at nearly a right angle to the arms f, and serve to furnish the support to the jaws E, being set to any size of tenon by means of right-andleft screw-bolts f2. The double bolts f2 are rmly secured after adjustment by a set-screw, f3, applied to the same through the parts f1. The cuttingknife g3 is made with a straight plain edge, while the other, g4, is made with a similar edge, and, in addition thereto, with a projecting lip, which dresses the tenon evenly, as shown in Fig. 4.

The length of the tenon is regulated by the adjusting burr or collar t', that is set on the crank shaft D1. The turning of the main crank produces the forward feeding of the cutter-head on the spoke until the collar t' comes in contact with the stein D, the check given by the collar when the full length of the tenon is reached producing a perfect shoulder on the spoke. The machine is rapidly applied to the spoke and the tenon cut, then taken oft' and placed on the next spoke, and so on, tenoning thereby in accurate manner all the spokes of the Wheel without handling the same, or changiugits position on the Wheelstool, so as to form a valuable substitute for the present tenoning implements and tools.

We are aware it is not new to employ angular plates for clamping spokes and hubs While being tenoned or mortised; and we do not claim such mechanism, broadly. p

Having thus described our invention, we claim as new and desire to secure by Letters Patentl. In the tenoning-machine herein described, the combination, with the tubular guide-stock a, of screw-threadcd shaft D1, the tubular stem D, carrying cutter-head G, and threaded internally, as specified, and the burr i, adjustable on the threaded portion of said shaft, all constructed and arranged as shown and described, whereby the parts D1. and D are vlocked together during the operation of cutting the tenon, and the length of the latter is determined by their relative adjustment, as set forth. I

2. In the improved tenoniug-machine herein described, the angular clamping-plates B B, right-and-left screw-shafts e e, and meshing-gears f1, in combination with the angular jaws E E, bolts f2, tubular stem D, screwshaft D1, and burr i, all constructed and arranged to operate as shown and described, whereby the clamping and cutting mechanisms are coincidently adjustable in the frame A, as and for the purpose specified.

JOSHUA R. COLEMAN.

SAMUEL MYERS. Witnesses:

J. G. MENsER,

WILLIAM HEIL.

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