Make a nozzle of the end of a
clay pipe stem for the other end of the tube. Then turn the crank
from left to right. The first wheel presses the air out of the
tube, creating a vacuum which is immediately filled with water.
Before the first wheel releases the tube at the top, the other
wheel has reached the bottom, this time pressing along the water
that was brought up by the first wheel. If the motion of the
wheels is regular, the pump will give a steady stream. Two feet of
1/4-in. tubing, costing 10 cents, is all the expense necessary.
--Contributed by Dan H. Hubbard, Idana, Kan.
** How to Make a Fire Screen [82]
[Illustration: FIG.2 Made of Strap Iron]
A screen which will not interfere with the radiation of the heat
from the fire, and will keep skirts and children safe can be made
at little expense out of some strap iron. The screen which is
shown in Fig. 1, stands 20 in. high from the base to the top
crosspiece and is made of 3/4 by 1/4-in. and 1/2 by 1/4-in. iron.
The top and bottom pieces marked AA, Fig. 1, are 3/4 by 1/4 in.
and are 30 in. long, bent at an angle to fit the fireplace 7 in.
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