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tive. It is now ready to pour into the vessel which is to hold it, while in use.
A wooden vessel may be constructed for this purpose, but a shallow cake tin of rectangular shape will serve equally well. The container should be placed on a level surface after it has received the composi- tion, and the contents permitted to cool in a cool room which is free from dust for about 7 hours.
To use the pad it is only necessary that a small wet sponge be passed lightly over the prepared surface. When nearly dry, the first copy may be made. The writing is made in hectograph ink, which may be purchased at any stationery store. It is advisable to use a new steel pen with every original. After the writing has be- come dry, it is placed face downward on the pad, and the back of the paper rubbed gently to secure perfect contact. In a few minutes it should be removed by placing one hand on the sheet and pulling from a corner with the other. In this manner many copies can be made. When the desired copies have been obtained, the pad should be washed lightly with a sponge moistened with cold water. Lastly, be sure to let it dry before it is used again. — Herman Neuhaus.
A Folding Bicycle Stand for the Home Shop
THIS bicycle stand not only forms a secure means for holding the "bike" in position when not in use, but also has proven itself of wonderful convenience during the arduous operations of cleaning, oiling, and tire inflating. The ease with which the rear wheel and crank shaft may be rotated to reach all parts of the sprock- ets and chain while the bicycle is main- tained in its supported position, as shown in the illustration, make the device par- ticularly useful, and as the stand folds, this removes the objection which its "set-up" bulk might occasion.
The details of the construction are very simple and can be readily under- stood from a study of the illustrations. The easiest and quickest way to form the three wooden parts constituting the frame is to saw them out of a J n-in. board with a scroll-saw, or easier yet, on a band-saw. The angle brace connecting the base and the standard may be formed from a piece
��Popular Science MoiitliJij
��of strap iron, or if more convenient, from ^4-in. round iron. When the bicycle is placed on the stand, its weight, as shown, is supported by the upright standard; the felt-covered notch at the top, supporting
���A substantial bicycle stand that may be folded into a small space when not in use
one side member of the rear wheel fork. As the bicycle hangs by one side member, the lower portion of the rear wheel swings, by gravity, against the adjacent lower edge of the standard. To guard against the bicycle being inadvertently displaced from this position, a guard pin is provided in the base. A small stove- bolt may be used to pivotally secure the standard to the base. — J. D. Garfield.
��A Homemade Lifter for Gasoline Engine Valves
THE illustration shows a lifter made of metal modeled somewhat in the shape of a carpenter's vise. The ends of the jaws are flattened into a wedge-shape and slotted to fit over the valve stem.
���A forged tool in the shape of a carpen- ter's vise for a gasoline engine valve lifter
With the spring between the jaws the screw clamp can be turned to compress it for removing the holding pin. Such a tool can be easily made by the home blacksmith. — N. A. Dow.
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