History of the Typewriter

Forfatter: Geo. Carl Mares

År: 1909

Forlag: Guilbert Pitman

Sted: London

Sider: 318

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Side af 333 Forrige Næste
— 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