For operation in hilly districts, where only trails are to be
found, the Marconi Company, has perfected what may be described
as "pack" and "knapsack" installations respectively. In the
first named the whole of the installation is mounted upon the
backs of four horses. The first carries the generator set, the
second the transmitting instruments, the third the receiving
equipment, and the fourth the detachable mast and stays.
The generator is carried upon the horse's saddle, and is fitted
with a pair of legs on each side. On one side of the saddle is
mounted a small highspeed explosion motor, while on the opposite
side, in axial alignment with the motor, is a small dynamo. When
it is desired to erect the installation the saddle carrying this
set is removed from the horse's back and placed upon the ground,
the legs acting as the support. A length of shaft is then
slipped into sockets at the inner ends of the motor and dynamo
shafts respectively, thus coupling them directly, while the
current is transmitted through a short length of flexible cable
to the instruments. The mast itself is made in lengths of about
four feet, which are slipped together in the manner of the
sections of a fishing rod, and erected, being supported by means
of wire guys.
Pages:
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282