Improvised Penholder Made with Pencil and Clip
An ordinary pencil clip can be used to make a practical penholder by sliding it to the end of the pencil, as shown, and inserting the pen under it. The tension of the clip holds the pen firmly, and provides a serviceable holder, for emergency use, or even for permanent use, where a pen and pencil combined are desired.—Raymond B. Rogers, Portland, Ore.
Generator Attachment Provides Current for Bicycle Lamp
Rigging up a small dynamo on the bicycle is a simple job, the dynamo being belted from a friction pulley, making connections with the rubber tire of the rear wheel, as shown. Fig. 1 shows the make-up of the head lamp. It is composed of a tin cylinder, grooved at one end to hold the lens; at the other end of the cylinder is fastened a ³⁄₄-in. wooden disk, to which the lamp socket is fixed. Clamp straps hold the lamp on the fork frame. The small lamp, inserted in the socket, holds the reflector in place.
Fig. 1 Fig. 2
Fig. 3
The Dynamo is Operated by a Belt Arrangement Connected to the Rear Wheel, and Supplies Light, and, if Desired, Operates a Horn
The dynamo-driving arrangement is shown in Fig. 2, and detailed in Fig. 3. A leather belt fits in the groove side of the wooden pulley. The swinging pulley arm supports and clamps the driving arrangement. A spring holds the friction wheel against the tire, and to release it, the “off” lever is used. A small direct-current dynamo serves well, and may also be used to operate the horn and whistle.—G. F. Thompson, Pittsburgh, Pa.