The Diseases Of Electrical Machinery 1904
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PRE FACE.
vii
the grave-yard ; behind the Consulting electrical
engineer—tell it not in Gath—lies the scrap-heap.
Happily, with the co-operation of designer and
constructor, of electrician and engineer, the modern
dynamo has developed into a strong, healthy creature.
One hears little now-a-days of many of the troubles
that beset his childhood. It is true that in the seven-
ties he was a puny weakling; that in the early eighties
he suffered from a sudden epidemic of the disease
called “ flats ” ; that owing to early mismanagement
he used not only often to run away, but even to burst
his binding wires. His limbs were racked by want of
proper balance, and occasionally a sudden high fever
caused him to shuffle ofif a mortal coil or two. But
in all these things there has come, with the advent
of manhood, an amazing robustness of constitution.
Fifteen years ago, one could truthfully write that in
those electroplating shops in London—and how few
they were!—where dynamos are used, the practical
men in charge of them “ almost invariably hold the
firm opinion that they are not getting the current
from the machine unless they can see sparks at the
commutator, and they therefore so adjust the brushes
that they get a good blaze.” Those good old days
are gone, and with them many a species of dynamo
which was unable to compete in the struggle for ex-
istence. The survival of the Attest, here as every-
where else, has eliminated the constitutionally unfit.
Not all the skiil of the eleverest consultant can keep