History of the Typewriter
Forfatter: Geo. Carl Mares
År: 1909
Forlag: Guilbert Pitman
Sted: London
Sider: 318
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— 29 —
the 1851 exhibition, and he then let the matter rest for
a while. Afterwards he took the matter up again, and
between the years 1855 to i860, he had (with Mr. Pickier,
of Buda Pesth) completed no less than six different machines,
of which three remained in a complete form. Although they
would not by any means meet the requirements of the
present day, yet they were marvels of ingenuity, and are
still in more or less working order...... They are now in
the South Kensington collection.”
We now illustrate and describe, as briefly but as clearly
as possible, these early machines.
WHEATSTONE’S FIRST MACHINE.
In this machine there was a keyboard somewhat re-
sembling the manual of a piano. There were thirty keys
in all, twenty-nine of which were employed for the imprint-
ing of letters, etc. and the other was a space key. The
type were mounted on flexible tongues of metal resembling
Fig. 14
the teeth of a comb, which is at the top of the machine
and is segmental in shape. Each key forms one arm of a
bell-crank lever, and when depressed forces the other
arm into a horizontal slotted plate, connected with the
comb, and so arranged as to slide the latter sideways until
the particular type is brought under a hammer, which
then delivers the blow. After each impression the comb
is brought back into its position of rest by means of two
springs. As the key rises, means are provided to ensure
the paper travelling the required distance.
We present two illustrations of this machine, the one
showing the completed instrument, and the other being an
outline only, very much simplified and with portions
omitted, but which will show the operative portions much
more clearly' than the other and more finished illustration.