US41368A - Improvement in lathes for turning spokes - Google Patents

Description

gUNITED STATES PATENT OFFICE.

THEOPHILUS DERINGTON, OF DUQUOIN, ILLIOIS.

IMPROVEMENT IN LATHES FOR TURNING SPOKES.

Specification forming part of Letters Patent No. 41,368, dated January 26, 1864.

To all whom it muy concern Be it known that I, T. DERINGTON, of Duquoin, county of Perry, State of Illinois, have invented a new and Improved Spoke-Lathe; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which` Figure 1 isa front elevation ot the improved machine. Figs. 2 and 3 show side and sectional elevations of Fig. 1, and Fig. 4 is a horizontal section through the machine.

Similar letters of reference indicate corresponding parts in the several gures.

This invention relates tov an improvement in turning spokes for wheels, whereby the cutters can be fed backward and forward in a direction with the length of the spoke to be formed, and at the same time guided and controlled for giving the required shape to the. spokes, all by one. and the same pattern.

My invention therefore consists in so constructing and applying the spoke-pattern that it will perform the twofold offices ot' a feeder and guide for the cutters, as will be hereinafter described.

llo enable others skilled in the art to make y 0n the opposite end of the shaft of drum B g is a small pulley, a, around which a belt1 passes that transmits a rotary motion to the double pulley a a2, and this double pulley in its turn communicates motion to the spurred belt-wheel C, through the medium of a belt, I), pulleys c c', and belts d d', as clearly shown in Figs. l and 2, Sheet l. 'lhe belt b passes over a grooved pulley, b', which is keyed to a longitudinallymovable rod, b2, which latter is operated upon by the cutter carriageH at the terminus of each stroke, and caused to shift the belt b from one pulley, c, to the other, c', for reversing the motion of the spoke-pattern,

as will be hereinafter further explained. Between the pulleys c c is a loose pulley, c2, over which the operator of the machine can shift the belt b by giving the rod b2 a slight endwise movement, and thus stop the motion of the spoke-pattern and spoke, at pleasure. The automatic shifting of the belt b from pulley c to pulley c', or vice versa, is caused by the cutter-carriage striking the arms e e at the terminus of each stroke. The reversing of the wheel G is effected by crossing the belt d. The other belt, d, not being crossed,it will not be necessary, therefore, to stop the motion of the drum B when it is desired to reverse'the. movement of the cutter-carriage, or to remove a finished spoke and replace a stick in its stead.

The pattern E consists of a long tapering bar of the desired shape, having a spiral groove extending from one end to the other. The largest end of this pattern may be made nearly square in transverse section, gradually diminishing into an elliptical form, as shown in Figs. l and 3. To obtain a better idea of this pattern, take a nished spoke and wind around it a thread which will form a spiral groove extending from end to end. This pattern E is suitably centered in the machine, and secured at one end to the shaft of the belt-wheel C, as shown in Fig. l. The wheel C has teeth around its circumference, which engage with a spur-wheel, F, of an equal diameter to wheel C. The spur-wheel F is keyed to a mandrel, g, having a forked holding end, g', and coincident with the axis of this mandrel is an adjustable centering-point, g2, which can be moved in the direction of its length and secured in place by the crank-nut h, Fig. l. Between the mandrel g and this centering-point g2 the stuff which is to be formed into a spoke is secured, so that the axis of motion ofthe stuff or stick will be in a Vvertical pla-ne with axis ofthe pattern.

The cutters which are used for mal/ing the spokes are right angular knives, secured at regular intervals 'apart to a wheel, G, as shown in Figs. 1 and 2. The rim of this wheel G may be made quite thick, so that its momentum will be increased, and theknives may be arranged so that they will project alternately from right to left, and vice versa. This cutter-wheel is keyed to a shaft which has its bearings in a pendent frame or cara longitudinal bar, J. This ,bar has its lower 1 edge beveled, as shown in Fig. 3, Sheet 2, and this edge rests in notches which are cut in the uppermost transverse bars of the frame A. The lower end. of the cutter-frame H carries a tooth, a, which tits into the groove in the pattern E, and which is kept up against the surface of this pattern by means ot' a weight, I, that is attached by a cord to the lower end of frame H. This cord passes over a loose travel.- ing pulley, m, which traverses the rod m as the cutters are i'ed up to their work. The weight I rises and falls as it moves trom one end ot' the machine to the other, and allows the eutl i l ters to accommodatethemselves to the motions imparted to them by the tooth a acting upon the pattern E. a belt, t', which passes up from the driving` drum B, and around the pnlleyj on the shaft of the cutter-wheel. The large end ot' the pattern E has a tenon i'ormed on its end, which tits into a square socket-piece on the shaft of wheel C, and the opposite end of this pattern is held by a centering-screw, on loos ening which the pattern can bc removed and another pattern ot' a smaller or larger size introduced in its stead.

From the above description it will be seen that I have a cutter t'rame orcarriage, which is constructed and arranged so that while the cutter-Wheel rotates it can be moved longitudinally from one end to the other ot' the frame of the machine, and at the same time made to Oscillate and to follow the contiguration oiVl the pattern, against which the tooth n ot' the eutter-frame is constantly pressed by the traveling weight I, thus making a spoke which will be a counterpart of the pattern, but without the spiral thread. The tooth n is acted upon by the spiral thread on the pattern and thus the cutter-trame, with its beveled supporting-bar, is moved along either to the right or to the left the full length of a spoke,

The cutter-wheel is driven by 3 and upon reaching the end of the spoke the frame H will slide the bar b2 and shift the belt b so as to reverse the feed ofthe pattern, and thereby move the cutter-frame back again. I am thus enabled to make a spoke at every stroke of the cutter'frame, and to feed the cutters to their work only i ust as fast as they can pertorm their cutting thoroughly.

By using patterns having tine or coarse threads cut on them the cutters will be fed along with greater or less rapidity, according to the tineness ot' the threads. Thus for some kinds of wood which are tougher than others a tine thread may be required on the pattern for giving a slow feeding movement to the cutters.

The oscillating cutter-frame, with its snpporting-bar, may be adjusted laterally on the trame A, and thus adapted for spokes of dilt'erent sizes, and the notches which are cut in the upper edges of the two supporting-bars of the trame A, as shown in Figs. 2 and 3, serve to keep thebeveled bar J in place when properly adjusted.

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

l. Uontrollin g the lateral motion ot' the cutters, and at the same time feeding them up to the work of matting spokes, by means of a single pattern, constructed and operating substantially as described.

2. A spoke-pattern constructed with a spiral or screw thread on its surface, substantially` as and for the purposes described.

3. The oscillating traveling carriage H J, in combination with a traveling weight, I, tooth a, and a spokepattern, operating substantially as described.

THEOPHILUS DERINGTON.

Witnesses:

ENos D. HOGE, J AMES l-rrcHrn.

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