The National Encyclopaedia a Dictionary of Universal Knowledge volume 10
The National Encyclopaedia a Dictionary of Universal Knowledge volume 10
Darwin Erasmus
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Konig contrived to print both sides. The sheet was conveyed from one cylinder to the other by means of tapes; the course of the sheet resembling a couple of abrupt curves, as shown in fig. 7, the sheet being turned over as it moved. - This machine turned out 750 sheets per hour, printed on both sides, and was considered by the patentees to be incapable of further improvement. In a machine constructed by Messrs. Donkin & Bacon, inking rollers, covered with a composition of treacle and glue, were... first used. The rollers had formerly been covered with leather, and had never answered properly. In 1818 Messrs. Applegath & Cowper took out a patent for improvements in cylindrical printing machinery the chief being the application of two drums placed between the cylinders to secure accurate registering, over and under which the sheet is conveyed in its progress from one cylinder to the other ; and the mode of distri- buting the ink upon fiat movable iron tables. Plate 3 represents one of Applegath & Cowper's ordinary per- fecting machines, as originally patented.
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