This historic book may have numerous typos and missing text.
Purchasers can download a free scanned copy of the original book
(without typos) from the publisher. Not indexed. Not illustrated.
1910 Excerpt: ...Niagara furnish current for motors in Buffalo and
other cities. One great scientist, who no doubt foresaw the wonders
of electricity which we know so well to-day, said that the greatest
discovery of the nineteenth century was that the Gramme machine is
reversible. The First Electric Railway The electric railway was
made possible by the invention of the dynamo and the discovery that
the dynamo is reversible. At the Industrial Exposition in Berlin in
1879 there was exhibited the first practical electric locomotive,
the invention of Doctor Siemens. The locomotive and its
passenger-coach were absurdly small. The track was circular, and
about one thousand feet in length. This diminutive railway was
referred to by an American magazine as "Siemens' electrical
merry-go-round." But the electrical merry-go-round aroused great
interest because of the possibilities it represented (Fig. 54). The
current was generated by a dynamo in Machinery Hall, this dynamo
being run by a steam-engine. An exactly similar dynamo mounted on
wheels formed the locomotive. The current from the dynamo in
Machinery Hall was used to run the other as a motor and so propel
the car. The rails served to conduct the current. A third rail in
the middle of the track was connected to one pole of the dynamo and
the two outer rails to the other pole. A small trolley wheel made
contact with the third rail. The rails were not insulated, but it
was found that the leakage current was very small, even when the
ground was wet. The success of this experiment aroused great
interest, not only in Germany, but in Europe and America. America's
greatest inventor, Edison, took up the problem. Edison employed no
trolley line or third rail, but only the two rails of the track as
conductors, sending the curre...
|Country of origin:
Elmer Ellsworth Burns
||246 x 189 x 3mm (L x W x T)
||Paperback - Trade
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