Excerpt from The Principles and Progress of Printing Machinery In the following short series of chapters an attempt, necessarily of a slightly desultory character, it must be con fessed, will be made to show the evolution of the chief parts of modern machines; to describe the principles on which their design has been settled, and to point out the progress accomplished as each successive step in advance has been achieved. Merely historical facts will be omitted, except when it is found that the1r bearing is of special importance. To this general matter are added accounts in detail of most of the printing machines now in use - this matter being chiefly reprinted, with additions, bringing it as far as possible up to date - from Mr. F. J. F. Wilson's Typo graphic Printing Machines and Machine Printing recently forming one of the volumes of Wyman's Technical Series. The work of revising this matter has been chiefly done by Mr. J. C. Millington, a former Honours Medallist of the classes of the City and Guilds of London Institute for the promotion of Technical Education, and now one of the registered teachers of that excellent organisation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.