The record-union., 1898-06-01

" one and reproduced in the receives
To telegraph a picture occupied. as the
instruments were regulated. about
twenty-five minutes.
Accepting Mr. Hummers word that
the machines were in good working
order. and after three or four pictures
had passed over the wire, said:
Mr. Hummel, 1 want one of the
"Heralds" artists to prepare ones Of the
pictures now. 1t will be that of a man
with whom you are unacQuainted.
"All right, sir" Mr.. Hummel replied.
Il have no objections whatever
The inventor handed me a square
piece of tin. 1t measured four inches
| and a half
All you have to do" Mr.. Hummel
| said, turning to the artist, lis to draw
the picture you want Autographed on
| that piece Of tin. Leave a margin of
about half an inch on all sides of the
| drawing. You may take a pen or q
| brush for your work, but instead Of ink
| use an alcohol solution of shellac."
The solution was quickly made and
| the artist sat down with a photograph
of Mayor Van Wyck at his left side for
a copy, and with a small brush painted
an excellept likeness Of the Mayor en-
the tin The plate was carried to Mr.
Hummel, who placed it in it's proper
place in the transmitter and started
| the machine. In twenty-five minutes
the machine stopped automatically
| The picture was completed and out Of
! the receiver" or the companion piece
| of mechanism. The paper was re-
moved with perfect reproduction Of
the original drawing. Then other pic
lures We're prepared for transmission
and accurately reproduced. The in
ventor's claim had proved true, the ma
chine had substantiated everything that
! mad been said of it. The experiment
had been closely watched by those who
are VerSed in the present uses of cleo
triciay, and they marvelled at the in
| geniousness of the quiet young man
VINO TODD at one side while his work
was being examined
The machine had worked in perfect
harmony, and there was no need of ad-
Justment from the time the instruments
| were started until the experiment had
stopped, period of probably two hours
| or more. Not thumbScreW had to be
/ turned on relay or anywhere else in
the complicated mechanical parts. This
! showed that under ordinary conditions
ana with good wire it mattered not
wnether the distance the electricity had
10 travel was eight miles or eight hun
dred miles. The voltage on the main
wire used yesterday was about fifty
| or seventy-five volts. Mr. Hummel
claims, and very honestly. too. that
| there is no limit to the distance over
! winch pictures may be sent and that
MS instruments will work over a tele-
srapn WIRE as long as any now in oper-
alton for the carriage of messages.
| REMARKABLE INVENTION.
III should not be magined that all that
was necessary for the transmission of a
| photograph was to drop it in a Slot and
photograph similar to it would appear
at the other end of the telegraph line In
the nrst place, the reproduction made
py the receiver would prove disappoint-
ing, because it would be found to be
| composed of small lines running later
| ally across the paper
| In order to explain this it must be
understood that the picture to be trans
. mitted is first drawn on piece of tin
four and half inches square. That
piece of tin is placed on a stationary
! bed In the transmitter and locked in.
The drawing is uppermost There is a
similarly constructed bed on the receiy-
ing instrument, but locked in this bed
are two pieces of white paper. also four
and half inches square, between which
is laid piece of carbon paper of the
same size. An arm on the transmitter
reaches ever the cture. This arm looks
like half of a walking beam such as is
seen on side wheel steamboat.
At the extreme or outer end of this
or fc, Nl<,%s
the tin plate. The arm is attached to
d carriage that works forward and back
ward on slides and is kept in movement
y a complicated piece of clockwork
which in turn is kept wound by a No
: Porter motor. The little motor is sup
piled by storage batteries for local use.
AS the arm passes backward and
forward the platinum point encounters
the drawing, the lines Of which are in
shellac. AS the point passes over the
shellac-a non-conductor of electricity
the circuit is opened. The opening Of
receiving instrument at the other end
OF the wire. While the local circuit is
closed the receiver is at work
AT the receiving end of the line, or. in
other words, when the machine is print
ing the picture on the pieces of paper
between which the carbon paper is
placed, there is an arm extending over
the paper somewhat imilar in construc-
| tlon TO the arm over the tine plate This
arm carries an electro magnet which
operates hard steel point which is al
most as sharp as a pin
When the circuit is opened by the
transmitter il draws the needle in the
receiver down on the paper. Wherever
a shellac line occurs in the original
drawing the steel point in the receiver
records a black line. The arm in the
receiver is moved backward and for
ward by the same construction Of clock
work as in the transmitter.
The instruments at first appearance
look like two miniature printing presses
with their carriages shooting backward
and forward over the fat beds where the
pictures show. This lateral motion, il
VIII be remembered, produces in the re-
ceiver simply straight line. the length
OF which is regulated by the length Of
over it.
The clockwork in both instruments
must Of necessity be so nicely regulated
that both carriages will work together
to a nicely. At the end Of every trip
made by the carriage on the receiver the
time Of its beginning another trip is cor
rected by the transmitter.
AS matter of illustration and for the
better understanding of the telegraphing