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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. 



