It is then ready to be mounted on a wooden base as shown in Fig.
2. The secondary terminals are connected to the binding-posts, AA,
which may be fastened on the base if desired. One wire from the
primary is connected with the binding-post, B, and the other is
connected with the armature, D, which may be taken from an old
electric bell. The contact screw, E, also from an electric bell,
is connected to the binding-post, C. The contact spring, F, should
be bent against and soldered to the armature in order to make the
vibrations more rapid.
If a false bottom is used on the base, all the wiring may be
concealed, which adds greatly to the appearance and if desired a
small switch may be added. The handles, which may be old bicycle
pumps or electric light carbons, are connected to the
binding-posts, AA, by means of wires about 3 or 4 ft. long. This
coil when operating with the tube pulled all the way out and
connected to a single dry cell will give a current stronger than
most persons can stand.
** Home-Made Toaster [139]
Each outside frame of the toaster is made from one piece of wire
30 in.
Pages:
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344