AN IMPROVED PRINTING AND SIGNAL ELECTRIC TELEGRAPH, WITH ELECTRIC ALARUM ATTACHED
Year: 1853

page_text: PROVISIONAL SPECIFICATION left by Henry
left by Henry Mapple and
Daniel Moore Mapple at the Office of the Commissioners of
Patents, with their Petition, on the 12th October 1853.
PROVISIONAL SPECIFICATION left by Henry Mapple and
: Daniel Moore Mapple at the Office of the Commissioners of
Patents, with their Petition, on the 12th October 1853.
(Void by reason of notice to proceed not having been given within the
time prescribed by the Act.)
I, HENRY MAPPLE, of Childe Hill, in the.Parish of Hendon, County
of Middlesex, and DANIEL MOORE MAPPLE, of No. 16, Sidney Street,
City Road, Islington, Middlesex, do hereby declare the nature of the
said Invention for electric telegraphic purposes, being "AN IMPROVED
PRINTING AND SIGNAL ELECTRIC TELEGRAPH, WITH ELECTRIC ALARUM
ATTACHED," to be as follows:-
An improved electric telegraph printing and signal instrument,
with alarum attached. The printing portion consists in causing a type
wheel to revolve by means of one or more permanent or electro-magnates
being made to vibrate in front of an electro-magnate, and thereby bring-
ing the required letter to the point required. Or the type wheel or
letters can be brought to the required point by placing one or more
magnets on the axis which carries the type or letters. The type wheel
is placed in a shifting frame, and when the letter is brought to the re-
quired point the said shifting frame will be allowed to move by the

page_text: electric current being applied at the distant station; and by the shifting
of the said frame the letter or symbol will be impressed on-the material
prepared to receive it; the inking of the type is done by causing the
type to revolve in contact with a roller prepared with printing ink.
An improved key frame or pedal is attached to the said electric
printing instrument, in wich each key or pedal makes the required
number of breaks and contacts to allow of the passage of the electric
current, each key or pedal, coming, in contact with a break, wich regu-
lates the speed of working, or the required contacts and breaks can be
made by a vibrating handle. The call signal or alarum consists in
placing aney number of weights or balls at aney required heigth; an
electric current sent from a distant station "will act upon a lever, and
release the weights or-balls, wich, falling-on-aney-sounding material, or
raising a hammer, to do the same, will call attention, the weights to be
replaced, as may be required. This makes a very cheap.telegraphi
alarum. It is a very important point in. the electric telegraph that the
permanent magnets should retain their power to do this readily and
efectually the points or ends of the moving-permanent magnets are
tipt with iron; these iron points are carried into the electric coils, so that
the electric current will act upon the iron points or ends. These iron
points or ends can be bent at right angles, or otherwise, as may best
suit for keeping the electric current from the permanent magnet.
.1
Instead of centers or pivots, as now generally used; a piece of silk or
other like yielding substance is passed through or over the permanent
magnet, and this silken or other substance is streched and kept tight
by a spring or weight at one or either end, and thus the silken or other
like substance formes an axis on wich the magnetised body is allowed
to move. By twisting the thread on one side or the other the pointer
is put in exact position.