The mountain Democrat., 1865-09-02
The PAnteleGraph.

We have several tunes had occasion to
mention the Able CASsali's wonderful in
ventiOn, by which be not only transmits
from one place to another the words of q
dispatch, but the very handwriting Of the
person who sends It. As this new tele
graphic system is nov beginning to re-
celve a practical application on a large
scale, description OF the apparatus may
not be uninteresting to our readers. =
Imagine Cast-lrOn frame, shaped like an
A, and . pendulum suspended from It's
apex. AT each foot of the frame there is
an electro magnet, through the action Of
which the pendulum, which is two me.
tres IN length, oSciIlates between them,
according asran electric current passes
lrom one to another. About the midole
Of the sGait Ot the pendulum there is a
sort of arm or cam, which, at each OScil-
lation, causes q lever, fixed at the cross.
bar Ol the A, to describe y circular arce.
AT the first stroke the metallic vibration
is interrupted, and at the second fork ls
Net IN motion, the pIOngS Of which alter
nately ACT ON the teeth OF the ratch,
which is thus forced to turn, anu IN So
doing communicates motion tO an endleAS
screw cut into Its OWN Shsft This end
lrsS screw causes two snall charIOts 10
move simultaneously each chariot car
les a tine steel point, Ut stylus. Now ,as
III vlItue ol the en- iieSs screw, thrse twu
points move unltOr,uly in the Sainc uirec-
tlon - the III OgresS vi the one not dltfri. &.
l"g from that VI the Other even by hair's
brcATth it io.lOwS that whatever stroke
l. described Ly the one, will he imItaled
With iuathen'atlcAi txaCtneaS by the 9th
er. Now, suppose metallic plate To b.
placed under +ach p int, these plat, be
ing carved like The cITcutur arcs described
by the pulntS; then. after \ certain nun
ber Of OSCILLATIONS ot the p,udulum, these
points IN moving along will have de>crib
Ell upon the plates as many parallel ineA
Infinitely close TO each 9th, Is there have
been OscIilatI0nN; hence the whole sur
face If the plate will huve been gone over.
! he plates are in direct communication,
ith the ground by mcSns Of chains one
Of the plates we will call the transmitter,
the other the recipient.
The sender of the dispatch writes it
with common INK on sheet Of tInned
paper, aud places it on the transnitter
On the recipient we place sheet Of chem
ical paper, impregnated. with solution oi
cyanide Of potassium. Let us now sel
the apparatus in motion. The current
being established. 10 long as the point O
the tran>mitter only touches upon the tin
the electric fluid will escape into the earth
but no A"Oner does ii meet the ink Of tn,
| writing, which is = non conductor, thar
the fund, not finding an escape there, wi II
seek 1t along the wire which connects the
two points together. ThpS the point
which works on the chemical paper OF
the recipient will produce a blue strok,
on the latter for every black stroke on
the dispatch for steel in contact with
ryan'dr # potassium, and under the in
tiacnce "f positive current, produces
thu. Hence, snproSing the dispatch to
'.Se ben written IN black in Paris, and
transmitted to Lyons, the correspondent
at the latter place will receive, in blue.
the lac Slnir Of the Sender'S hand wri
ting. An order to pay a certain SUN may
thus he tnn,mitted with perfect safety.
Gaiignani.