US231546A - Gage for sawing spokes - Google Patents

Description

(No Model.)

J. DEWITZ. Gage for Sawing Spokes.

No. 231,546. Patented'Aug. 24, I880.

N.FETERS, FNDTO-LITHDGRAPHEH, WASMlNGTON n c UNITED STATES PATENT OFFICE.

JACOB DEWITZ, OF PEOTONE, ILLINOIS.

GAGE FOR SAWING SPOKES.

SPECIFICATION forming part of Letters Patent No. 231,546, dated August 24, 1880.

Application filed June 21, 1880. (No model.)

To all whom it may concern:

Be it known that I, JACOB DEWITZ, of Peotone, in the county of Will and State of Illinois, have invented a certain new and useful Improvement in Gages for Sawing Spokes, of which the following is a specification.

The object I have in view is to produce a spoke-sawing attachment for spoke-tenoning machines, whereby the spokes can be sawed off the right length quickly and with great exactness. When the distance from the center of hub is once ascertained no further measurin g or marking is required to saw the spokes of any number of wheels of that size. The attachment can be quickly set for high or low wheels, or wheels having long or short hubs. The attachment is very simple, durable, and cheap, and does notinterfere with the tenoning devices. It can be used as a separate machine by securing it to a horse having a suitable slot to receive it and a center for holding the wheels.

Heretofore it has been customary to center the wheel on the horse of the spoke tenoning machine, and before shifting it forward, so as to bring the spokes within reach of the tenonin g-bit, to measure each spoke and saw it off by a handsaw while steadying the spoke with the other hand. This was an operation which took considerable time, and if the hub was shrunk into an oval shape, as they frequently are, the wheel was given the same shape.

My invention consists in the peculiar construction of the sawing attachment, and in the combination of the same with a slotted horse having a center for the wheel-hubs to turn on, all as more fully hereinafter explained, and pointed out by the claims.

In the accompanying drawings, forming a part hereof, Figure 1 is a bottom perspective view of the attachment, and Fig. 2 a top view of the attachment mounted upon a slotted horse.

The attachment is composed of two rectangular oblong blocks, A B, resting one upon the other, and connected by a slide, 0, having a vertical slot, a. The slide Gis secured to one side of the upper block, A and rests in achannel in the side of the lower block, B, to which it is adjustably secured by a bolt, b, passing through the slot to, and a thumb-nut, c, on its outer end. The block B has projecting from its under side a bolt, 01, upon which turns a thumb-nut, e, for securing the device to a slotted horse. The block 13 also has a stud, j, which projects into the slot of the horse and keeps the device straight. The upper face, g, of the block A is inclined, as shown, to allow for the taper of the spokes. From one corner of the block A, on the side farthest from the wheel, rises a square measuring and holding block, I), a shoulder, h, being left on top of the block A at its end for the spoke to rest solid upon when pushed against the side of the measuring-block D.

When the device is used as an attachment to spoke-tenoning machines the horses of such machines are provided each with a longitudinal vertical slot between the tenonin g devices and the slot in which the adjustable hub-centering plate is secured.

As a separate machine the device can be secured to a horse, E, having a slot, *5, and provided with a stud (not shown) or a self-centering chuck for holding the hubs and allowing the wheels to be turned. The wheel is placed upon the horse, to which my improvement is secured, and the block A is adjusted to the right height, depending upon the length of the hub. One of the spokes is measured and marked, and the device is adjusted upon the horse so as to bring the mark at the inner edge of the block D. The spoke is held with the left hand firmly against the block D and upon the shoulder h while it is being sawed 0E by a handsaw. The wheel is then turned and the next spoke brought into position and sawed off, and so on until all the spokes have been sawed to the right length. Another wheel can then be placed upon the horse and the spokes sawed to the same length without disturbing the adjustment of the devices.

If used on a spoke-tenoning machine, the attachmentis removed before the wheel is shifted into position for tenoning the spokes.

When much worn by the saw the blocks A and D can be easily replaced by any mechanic.

To adapt the device for left-handed as well as right-handed workmen, the block D could be situated in the center of the end of the block A instead of at one corner, and a shoulder, h, left on each side of the block D.

What I claim as my invention is- 2. The eoinbination, with a slotted horse IO 1. The spoke holding and measuring device adapted to carry a wheel, of the block 13,11avdeseribed,consisting of the block 15, provided in: scouring-bolt, the block A, slotted slide 0, with a securing-bolt, (I, the blue]; A, situated block 1), and shoulder 7i, substantially as de- 5 above the block 13 and adjustalilv seeured scribed and shown.

thereto by the slotted slide (3 and bolt I), said JACOB DEWITZ. block A having holding and measuring blot-k \Vitnesses:

D and one or two shoulders. 11, suhstantiall (JLAL's l). IIINRIKS,

as described and shown. PETER (oNR/m.

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