US72887A - Impeovement in machine foe boeing hubs - Google Patents

Description

position when in use.

@citen gratta. lateat @fitta D. J. OWEN, OFv SPRINGVILLE, PENNSYLVANIA. Letters PatentlNo. 72,887, dated December 31, 1867.

IMPROVEMENT IN MACHINE FOR. BORING HUBS.

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TO ALL WHOM IT MAY CONGERN:

-Be it known that I, D. J. OWEN, of `Springville, in the county of Susquehanna, and State et' Pennsylvania, have invented a new and improved Device for Boring Hubs to receive the boxes thereof; and that the following description, taken in connection with the accompanying drawings,,hereinafter referred to, forms a full andexact specilcation of the `same,wherein I have set forth the nature and principles of my said improvements, by which my invention may be distinguished from all others'of' a similar class, together with such parts as I claim and desire to have secured to me by Letters Patent. l

This invention relates to a new and improved machine for boring taper holes in hubs, and has for its object simplicity of construction with facility of manipulation, so that any personv of ordinary ability may use the device, and bore the hubs very expeditiously and in a perfect manner. In the accompanying sheet'of drawings- Figure 1 is a plan or top view of my invention.

Figure 2, a transverse section of the same, taken in the line :z: w, iig. 1.

Figure 3, a view of the rear side of a hub, showing'the hole made by the cutters.

Similar letters of reference indicate like parts.

Arepresents, a shaft or arbor, one end of'which is divarieated or forked, so that the prongs a a may he inserted in holes in anysuitable upright or fixture, andthe implement thereby held properly in a horizontal The opposite end of the shaft or arbor has a screw-thread, ax, cut upon it. B is across bar, which is firmly secured to the shaft or arbor A, and projects at equal distances from opposite sidesof the latter, as shown clearly in fig. 1. This crossJb-ar has a longitudinal slot, b, made in it at each end to receive slides, c c, which are adjusted by set-screws, d d; and Ato each slide c an arm, G, is attached by a pivot, e, as shown clearly in tig. 1. On the front ends of these arms C C, cuttersiff' are formed or attached. Itis designed to have the cutters made separate from the arms, andattached thereto in sucha manner that they may be readily detached, when necessary, for sharpening, or for other purposes, and also readily applied to the arms, or new ones substituted for them. The rear ends o f the'armsC have springs, g, bearing against them; and on thel arms there is Jfitted a slide, D, -which is simply a'plate having two holes, 7L 7L, made through it for the arms C. C to pass through, (see iig. 2.) Theholes h h, inthe plate or slide D, are rather nearer together than the pivots e c of the arms C C. E represents the huhjo be bored, which is fitted on the outer end of the shaft or arbor A. l It will be understood that the hubs are not bored'to receive their boxes until the wheel is fully completcd, the hubs, of course, having the usual I3inandrehholes, which admit of them being fitted on the shaftor arbor A, and to turn thereon without any unnecessary play or looseness. F represents a yoke, which may be constructed out of a single bar or piece of metahbent so as to form three sides, z'z'j, of a quadrangle, as shown in fig. I. 'lhe ends of the sides z'z' of Athis yoke are clamped to two opposite spokes, k k, ofthe wheel, and the side j has a hole made centrally through it for the shaft or arbor A to pass through. To this side j ofthe arbor there is secured, conoentrically with the hole through which the shaft or arbor passes, a nut, composed of two parts, lm, the part Zbeing rigidly attached to the side j of the yoke, and the other part, m, connected to it by a pivot, n, and secured in position by a pin, o. fits snugly on the screw a. of the shaft or arbor.

The implement is used as follows: The conical holes in hubs which are designed to receive the boxes are not taper at the rear end of the hub. l They are made perfectly cylindrical for a short distance, and then com.A mcnce to taper. The slide Dis adjusted on the arms C C at such a distance from thevcuttersff as itis designed for the box-hole to be cylindrical; and, by turning the wheel, the screw` a on the shaft or arbor, and the nut of yoke F, lfeeds the hub E to the cutters ff', one cutter, f, being slightly in advance of the other cutter f', and the latter being within thepath ofthe rotation off, so that the cutters will make an annular groove in the hub equal to their combined width, and thereby afford room for the arms C C to enter, (see iig. When the hub E reaches the plate or slide D, the latterA is shoved back on the arms CLL-and the cutters are gradually made to approach each other, and cut the remainder of thchole in taper form. After the hub is lOl'ed, the pivotcd part m of the `nut is raised, and thc hub may bedrawn directly off from the shaft or arbor A,

tho yoke detached from' the wheel, and applied-to anotherv one, the hub of which is to be bored. The slides c c This nut, when the pivotedpart m is secured in position,

are adjusted at a to be bored.

Having thus described my invention, I claim as new, The stationary screw-shaft A, bearing the slide D and F, bearing the hub, composed of two parts, being fed to the stationary cutters b purpose specified.

greater or less distance apart, according to the required dia-meter of the rear end of the hole and desire to secure by Letters Patentadjustable cuttersff, in combination with the yoke when such yoke is adapted to revolve carrying the hub, the latter y means ofthe screw a and the double nut lm, as herein described for the D. J. OWEN. Witnesses:

MILES PRIGHARD, CHARLES J. KNAPP.

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