History of the Typewriter
Forfatter: Geo. Carl Mares
År: 1909
Forlag: Guilbert Pitman
Sted: London
Sider: 318
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— 150 —
Groton, New York, and the Crandall Machine Company,
who control the patent rights, have offices at New York,
Chicago, and various other places throughout the United
States.
Fig. 117
Two models of the machine are made. One termed
the Model Crandall No. 2 (of which we present an
illustration herewith) being an exceedingly pretty machine,
having a specially arranged keyboard, as follows :—
ZPRCHMILFESDBK
JVXUNW.,TOAGYQ
and selling at fifty dollars.
The other model is termed The Universal Crandall
No. 3 and has the standard keyboard.
This machine present a different outline to the other,
is fitted with latest developments of the machine, and sells
at seventy-five dollars.
The general mechanism of both models is practically
the same. The types are described as being printer’s
faces, mounted on a type-sleeve, three and a half inches
long, and half an inch in diameter. The lower portion
of this sleeve is bevelled out into a series of cog-like grooves,
and when a key is depressed, and the lever actuates a
twirler arm, the teeth in which engaging in the grooves,
cause the type-sleeve to revolve. In the type-sleeve, just
below the letters, are a series of holes, and when, by means
of continued pressure on the finger key, the sleeve is forced
to descend and meet the paper, a locking pin enters the
hole, corresponding with the letter or sign about to be
printed, and so holds it firmly during the act of impression.
It is in this system of locking that the possible weakness