Evansville weekly journal., 1848-06-01

OCS-We quote the following account of
HOUSES Printing machine, from the N. Y.
Commercial AdUcrtiser:
HOUSE PRINTlNG TELEGRAPH-We have
more than once adverted to this machine, which
is now, we believe, in working order between
this city and Philadel phia, and is capable of
transmitting printed messages al a rate offrom
one hundred and twenty TO one hundred and
thirty letters per minute. So far as lies WITH
in our power, We will give the reader an intel
igent description of its mode of operation,
A part OF the machinery consists OF wheel,
upon the periphery of which are twenty-eighs
types; twenty-six are the letters of the alphabet
one is dot or period, and one hyphon This
wheel revolves by mechanical force, but It's
motion is controlled by the magnet, SO that by
keeping the electric current broken or closed,
it can be stopped By the operator. Near the
type wheel is a cylinder, with paper around
1t. When the type wheel stops, the cylinder is
brought against it and the paper receives an
impression from one of the types. The mag
net controls the type wheel by moving valve
and admitting the atmosphere to press upon
piston. on the other side of which is a partial
vacuum; this piston in turn gives motion to
an escapement, working against pins upon the
side of the type wheel, so that at each motion
of the magnet up or down, as the circuit may
be broken or closed, the escapement liberates
the type wheel and it moves through a space
equal to the distance from one type to the
next.
The operator at the other end of the line sits
at key board having twenty-eight ivory faced
keys, not unlike those of a piano forte. Be-
meath the key board Is a horizontal shaft ex-
tending the whole length of the board. and
having twenty-eight small pins projecti ng
from It's face; these pins are placed one be-
meath each key; and form spiral line about
the shaft, making single turn from end TO end;
upon one end of the shsft is wheel having
fourteen teeth; these teeth, with the fourteen
spaces between them, correspond TO the pins
on the shaft aud serve to break or close the
4 electric circuit; thus, suppose the negative
! pole of the battery in continued contact with
the side of the wheel, the positive pole then
rests or presses upon the end of the teeth; the
shaft and wheel are set in motion by mechani-
cal force, as the wheel revolves, the circuit
is closed whenever the positive pole pass
es over tooth, and is broken whenever it
passes over a space. The motion of the shaft
is controlled BY the operatar thus: from the
under side of each key projects fiat pin against
which, when the key is pressed down, the cor
: responding pin on the shaft will catch as il
comes around III its revolution, and cause the
shaft to stop.
: Now in order to transmit any particular let
ter to the other end of the line it is only neces
sary for The operator-fhe parts of the machine
al the two ends of theli having been put in
coincidence-to press down the key represent
a ing that letter, stop the key shaft. maintain
the circuit broken or closed as the case may be-
$ when the type wheel will be stopped the pa
I per cylinder brought up TO it and the paper
i will receive an impression of the letter repre-
:, set1ted by the KEY pressed down.