long by 3/4 in. wide. Bend as
shown in Fig. 1 and drill a hole for the knob in one end and a
hole for a screw in the other. Procure a small wood knob and
fasten it in place with a small screw. Cut a strip of the same
brass 2-3/4 in. long and 5/16 in. wide and bend as shown in Fig.
2. Drill two holes in the feet for screws to fasten it to the
base, and one hole in the top part for a machine screw, and solder
a small nut on the under side of the metal over the hole.
Mount both pieces on a base 4-1/4 by 2-3/4 by 1/4 in., as in Fig.
3, and where
[Illustration: Brass Key on a Wood Base]
the screw of the knob strikes the base when pressed down, put in a
screw or brass-headed tack for a contact. Fasten the parts down
with small brass wood-screws and solder the connections beneath
the base. Binding posts from an old battery cell are used on the
end of the base. The screw on top of the arch is used to adjust
the key for a long or short stroke.
--Contributed by S. V. Cooke, Hamilton, Canada.
** Keeping Food Cool in Camps [21]
Camps and suburban homes located where ice is hard to get can be
provided with a cooling arrangement herein described that will
make a good substitute for the icebox.
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