Evening star. [volume] (Washington, D.C.) 1854-1972, 1896-08-08
A LONG-DIsTANCE TYPEWRITER.
Instead of Printing Dots md Dnsbe.
II Typewrftes n Messave.

| The ''zerograph," the invention Of Lon
| karum, is, 1t is said. being tested by the
British post office department with a yi.w
10 introducing it into the national tele-
graphic system. The peculiarities ara
achievements of the device which is prac-
ucally a typewriter whose keyboard act
oates type bars miles away, may be learn
Gu from the Following paragraphs taken
IRON an Interview with Mr.. Karum by n
reporter of Black and White 1.ondon)-
Inc inventor describes 1t as follows:
1T Ia Geographic instrument that In
stead OF printing dots and dashes on a
strip or paper, typewrites a message on a
sneet OF letter paper at both ends of rba
wire simultaneously. The two machines
are identical In every respect and cap
ne USED lndlnerently as transmitters or as
receivers. The operator depresses the
Keys as in ordinary typewriting, and this
causes current from a local battery 70
aisehsase balanced pendulum in both
,naehhes. Ihere are thirty-six signs for
letters, numerals and spaces You oh
serve this circular framework CONSISTING
or thirty-six upright bars? The machine
Is constructed so that IL takes half &C.
ond for the pendulum to travel from "a
10 end of this framework and fractions of
nalt second down to a thirty-sixtb1 ,or
II 10 move between various Intervening
bars. Now, the letter or mineral printed
Will depend upon the space moved bv his
pehuuium- In other words, upon the
length OF time which elapses betwean ,u,o
successive electrical impulses There are
saIious automatic devices for moving the
paper, adjusting the alignment, mixing The
ietters, and 50 on. The fundamental nrin
cipie whereon the machine is worked Is
the absolute synchronism between The TWO
instruments. But for this absolute syn-
-isochronism is the precise term
1t would be impossible to produca The
ssme symbols at both ends because the
olnerence between one sign and anothar
resolves itself into minute difference OF
time" VI
In answer TO a question regarding IN.
advantages of his Invention over existtne
FERNS Of printing telegraph, the Inventor
said: e'oi
MY invention has certain advantages
~ prihts on an ordinary sheet of paper
IN lines and paragraphs. Instead OF re-
curing an experienced telegram onerator
II can be used by any one who tyrewrites
IT can be used in private offices like The
telephone, and worked at all times OF the
uay or hgn1 without the Intervention Of
telegraph officials. The machine is auto-
matte, and delivers its message whether
elere is or Is not some one at the receivine
end. 1t also has the advantage 81 ais
pensing with clockwork, motors and other
cumbersome and costly devices. In can he
worked on the exchange system In fact
IL combines the functions of Typewriter
telegraph and telephone.
III Is quite equal to anything hitherto
obtained, If not faster-more particularly
Tor long distances, the electrostatic capac-
lily to be overcome being considerably less
In the case Of Zerograph. Whereas other
ir struments operate at a speed of twenty
nve to thirty words a minute. / can see
my way to increase my present speed to
forty words minute
1T can be turned out a column writer
at about the same cost as a standard REM
fngton-say from f15 to f20"