The telegraph manual: a complete history and description of the semaphoric, electric and magnetic telegraphs of Europe, Asia, Africa, and America, ancient and modern.

270 3AIN'S PRINTING TELEGRAPH.
On the arbor of the wheel, 11, is fixed a type wheel, c, at a
little distance from the paper cylinder, A, on which the messages are to be imprinted. P is a second main spring barrel,
with its train of wheels, MI, o. is a fly, or vane. On the
arbor of the wheel, o, there is a crank, v, and the two pallets,
a and b, which prevent the train of wheels fiom rotating, by
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0d~~~~~~~~~~ 10~~~~~~~J'
11gY - -- --- 1 1 -
coming in contact v with the lever, z. When the telegraph is
not at work, a current of electricity is constantly passing from
the Portsmouth plate, buried in the ground, through the
moisture of the earth, to the plate in the ground at the London
station. From the copper plate of that station the electric
current passes up through the freely suspended mnultipying
coils, R and R (which it deflects to the horizontal position),
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ K~ _ _ _ _ _ _ _ _