. History of the cotton manufacture in Great Britain : with a notice of its early history in the East, and in all the quarters of the globe : a description of the great mechanical inventions, which have caused its unexampled extension in Britain, and a view of the present state of the manufacture and the condition of the classes engaged in its several departments. ouldhave required the application of the block 448 is this all. Two, three, four, and even fivecylinders may be used at the same time in one press,each cylinder having engraved upon it a differentportion of the pattern, and
. History of the cotton manufacture in Great Britain : with a notice of its early history in the East, and in all the quarters of the globe : a description of the great mechanical inventions, which have caused its unexampled extension in Britain, and a view of the present state of the manufacture and the condition of the classes engaged in its several departments. ouldhave required the application of the block 448 is this all. Two, three, four, and even fivecylinders may be used at the same time in one press,each cylinder having engraved upon it a differentportion of the pattern, and being supplied with adifferent colour. The piece passes over them suc-cessively, and receives the entire pattern almost in thesame moment. To produce the same effect by handblock printing, would have required 896, 1344, 1792,or 2240 applications of the blocks, according as 2, 3, 4,or 5 cylinders may have been employed. The savingof labour, therefore, is immense: one of the cylinderprinting machines, attended by a man and a boy, isactually capable of producing as much work as could beturned out by one hundred block printers and as manytear-boys ! In consequence of the wonderful facilitygiven to the operation, three-fourths of all the printsexecuted in this country are printed by the cylindermachine. (PL 14.) But the course of improvement did not stop THE COTTON MANUFACTURE. 267 Another admirable invention, analogous to that justdescribed, multiplied the advantages of cylinder process of engraving itself, instead of being executedby the graver on the whole surface of the copper cylinder,is noAv performed by mechanical pressure, which transfersthe pattern from a very small steel cylinder, only aboutthree inches in length and one in diameter, to thecopper cylinder three or four feet in length. The prin-ciple of this invention is the same which Mr. JacobPerkins applied to the multiplication of plates for theprinting of bank notes, and Mr. Perkins has the repu-ta
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