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

368 TIlE ELECTRO-CHEMICAL TELEGRAPH.
described in the words following, to wit: " The register con.
sists of a series of wheels and pinions, and its object is to regulate the movement of paper, or other material upon which to
imprint telegraphic characters. A, A, &c., sheet I., II., figs. 1
and 3, the platform of wood or other convenient material upon
which the machinery is erected. B B, &c., the standards for
the reel of paper, and c the reel of paper upon which is to be
printed the telegraphic characters. D one form of the arrangement of the wheels and pinions of the register; a e rollers for
drawing the paper in contact with the pen or marking roller 2,
seen also on sheet III., fig. 10. * * * * The frame D contains the train of wheels, whose motion is caused by the weight
a, or its equivalent. * * X* * * The paper roller d e, and 2,
fig. 10, sheet III., are so connected with the train of wheels,
that the paper drawn from the reels by passing between a and
e, is made to be in contact with the cylinder, fig. 2. The
roller e is kept in contact with a, by the forked spring in fig.
10, bearing upon the ends of the journals, and regulated in its
strength by the thumb-screws 8 and 9. The bearings or sockets for the ends of the shafts of e, are not circular, but are slots
to allow of a slight movement in a direction with and against
the force of the spring, so that the spring shall act with proper
power, tending to keep the cylinder e in contact with d."
Instead of a magnet, however, and lever and pen, I dispense
altogether with both the receiving magnet and the register
magnet, of my former patents, and substitute therefor the following arrangement, as exhibited in the accompanying drawing and description:
Description.-In the accompanying drawing, R is so much
of the register of my original patent just quoted, as is used in
drawing and regulating the motion of the paper, and is similarly used for drawing and regulating the chemically prepared
material for marking by electricity.
s s is the wooden platform for mounting the machinery.
a is a metallic cylinder or drum, or piece of metal mounted
upon a metal standard d, screwed into the platform. b is the
cloth or prepared material to be marked.
c is a thin-edged wheel, the periphery of which is platinum,
held by a metal spring e, also mounted on a metal stand and
f, screwed into the platform.
K is the metal key of my previously patented telegraph machinery. One form of it consists of a short lever of metal, having its fulcrum at or near one end. At the other end is a
finger-knob, the better to press it down. Between the fulcrum
and the knob may be a protuberance or hammer, as at i, above