This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1863 edition. Excerpt: ...cloth, and partly of paper, or firm card board, reduced in those parts requiring the over laying, by cutting or scraping, according to the thickness required. The ink is carefully spread over a circular invert opposite to the type, and connected to the vertical spindle of the type cylinder by hinged arms ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1863 edition. Excerpt: ...cloth, and partly of paper, or firm card board, reduced in those parts requiring the over laying, by cutting or scraping, according to the thickness required. The ink is carefully spread over a circular invert opposite to the type, and connected to the vertical spindle of the type cylinder by hinged arms resting on an upright bar, which is terminated by a pulley. This pulley acts upon a circular undulating railway fixed below the type cylinder, and from which the distributing surface receives a slight up and down motion as it revolves. The distributing surface is fed with ink by means of vibratory rollers, which continue in action between it and the upright ink boxes placed under the copper reservoirs. The contact of the inking rollers with the type is regulated by long coiled springs connected with the bearings, so that they merely touch the surface of the letters, which is one of the great advantages of the vertical portion of the machine. To shew the advantage of the arrangement, it is only necessary to mention, that in the case of the Times machine, 40,000 impressions have been taken without any difference being discovered between the first and the last. Another advantage of the vertical machine is that the dust or small particles adhering to the paper are taken from it when suddenly stopped, and fall to the floor, instead of being deposited upon the form or distributing table, as in the case of horizontal machines. In the London " Times" printing office is another vertical machine which was erected by Messrs. Little and Applegath, from designs of the former gentleman. The drum, or cylinder of this machine is 64 inches in diameter, and to it the columns of type are fixed. The "forms" are made segments of its surface, just...
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