Trim and tuck in the ends of the strip at the back edge.
When fixed this way your magazines make one of the most valuable
volumes you can possibly add to your library of mechanical books.
--Contributed by Joseph N. Parker, Bedford City, Va.
** A Homemade Acetylene-Gas Generator [57]
A simple acetylene-gas generator used by myself for several years
when
[Illustration: Acetylene Gas Generator]
out on camping trips was made of a galvanized iron tank, without a
head, 18 in. in diameter and 30 in. deep, B, as shown in the
sketch. Another tank, A, is made the same depth as B, but its
diameter is a little smaller, so that inverted it will just slip
easily into the tank B. In the bottom, or rather the top now, of
tank A is cut a hole, and a little can, D, is fitted in it and
soldered. On top and over can D is soldered a large tin can screw.
A rubber washer is fitted on this so that when the screw top, E,
is turned on it, the joint will be gas tight. Another can, C,
which will just slip inside the little can, is perforated with a
number of holes. This can C is filled about half full of broken
pieces of carbide and then placed in the little can D.
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