Printing Telegraphy... A New Era BeginsKleinschmidt, Edward E.
History
Printing Telegraphy... A New Era Begins
Kleinschmidt, Edward E.
SCM Corporation. Kleinschmidt Division; Telegraph -- Equipment and supplies; Teletype -- History
The instrument is provided with a Baudot 5-key keyboard, and has a
step-by-step distributor which is mounted inside the casing. The
standard Baudot alphabet is used, but each letter or character is
prefixed by a positive starting impulse. Every time a key is depressed
a universal bar is actuated which closes contacts giving the starting
impulse and the distributors at both ends of the line step through six
spaces. The combiner is of the electrical type invented by Baudot, and
is similar to that used in Siemens’ new automatic printing telegraph.
Five relays of the class used for telephone purposes are set at the
receiving end, according to whether some of the stepping impulses are
positive or negative. The distributor is a trunk hunting switch as
used in automatic telephony, and consists of a ratchet wheel and
stepping electromagnet. On the shaft of the ratchet wheel is fixed a
wiper which sweeps over a semi-circular bank of contacts in response
to the stepping impulses. Two-way working is secured by means of the
differential balance.
(The article ends with the statement that a typewriter keyboard is
being constructed to replace the five keys.)
It appears that all of these telegraph engineers and inventors
envisioned a start-stop system and experimented with the idea of
operating all transmitting and receiving apparatus at identical speeds
by inserting a start signal before each group of letter code signals, to
start both transmitter and distant receiver at the same time, and a stop
condition between code groups.
In the following chapters will be shown the contributions made by both
the Kleinschmidt and the Morkrum companies in the printing telegraph
field, and finally their joint efforts which were to lead up to the
establishment of that now worldwide intercommunicating system, the
TELEX.
CHAPTER 2
KLEINSCHMIDT
Edward E. Kleinschmidt’s first direct contact with telegraph apparatus
was during his employment as a young man, in 1893, by John E. Wright,
whose firm had developed and was then manufacturing printing telegraph
equipment known as the Wright-Negron bulletin printer for the Havas News
Agency in Paris. These printers operated on the step-by-step principle
at 30 words per minute. (To attest to their ruggedness, as late as 1951
some of these machines were reported to be still in use!)
Public-domain text, read in full here on John Shaqi.
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