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

452 THE MORSE TELEGRAPH APPARATUSES.
the local current traverses the coils of the register magnet, fig.
39, which generates magnetism in the cores, the armature is
then attracted down, which elevates the other end of the lever,
and the pen point is thus caused to puncture the ribbon paper,
Fig. 39.
as seen in fig. 40. The clockwork being in motion, the paper
is drawn through by the grooved rollers, and thus a clear piece
of paper is continually presented for indentation by the pen
point. The clockwork is wound up by the key, seen in the
figure, and it is set in motion or stopped by the stop slide, the
handle of which is seen at the centre and under the mechanism.
Fig. 40.
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