Bicycle repairing by Burr S. D

Author:Burr, S. D[e] V[ere], [from old catalog] comp
Language: eng
Format: epub
Tags: Bicycles
Publisher: New York, D. Williams
Published: 1896-03-25T05:00:00+00:00

Fig. 1. — Assembling a Wheel.

so simple in construction and as it is so conveniently operated. It is not intended, with the use of this machine, to bring all of the spokes to their final perfect condition of strain.

The hub of the wheel is placed over a rod projecting from the center of the revolving table and the rim is laid on the

frame, about in the position it will occupy when all the spokes are in place. The wheel is then " strung up " as it is termed, each spoke being placed in its correct position. The operator then screws up all the nipples, one after another, and without gauging gets the wheel as nearly true as possible.

The apparatus itself consists of the table mounted upon a spindle, about which it is free to revolve, it being considered better to turn the entire table, and so bring nipple after nipple within reach, than to turn the wheel itself, particularly when the spokes are all loose.

This is another one of those devices upon which a good many dollars could be expended and much time taken in constructing it, while at the same time an equally efficient one could be built in half a day and with an expenditure of only a few cents.. Little devices like this, which can be made by the Bicycle repairer himself at odd times, are in a great many cases of much more real value than the same thing would be if made to order and by an expert.

Frame for Stringing Up a Wheel.

A frame for holding the rim of a wheel while the spokes are being inserted and tightened is shown in Fig. 2. The frame is so formed as to be carried by a Bicycle stand, and is shown in its working position in the engraving on page 29. It is a more elaborate affair than the one just described, and is designed to bring the wheel much nearer its true form. It consists first of a yoke or oblong shaped frame carrying a flat cast iron ring, as indicated. Projecting in the same line from the side bars of the frame are two adjustable centers, A and B, the inner ends of which are cone shaped, so as to enter and hold the hub. These two centers may be placed at any distance apart in order to hold a wide or narrow hub, and by means of set screws passing through their sleeves may be held in any required position. The frame carries in a plane perpendicular to its own plane a flat cast iron ring 23 inches inside diameter and 32 inches outside. One face of this ring is turned perfectly flat and is in line with the center of the carrying frame. Concentric circles % inch apart are marked on the surface of this

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