Page:History of American Journalism.djvu/427

 r. Tucker and

Campbell produced the rotary folder which made possible the great speed in creasing the web sheets transversely. The latter also gave the stationary longitudinal folder and perfected the rotary delivery of the printed sheets. Another inventor added the sheet-turning bar by which two parts of different webs were brought together. Later, Hoe produced the mechanical marvel which gathered together several streams of paper and united them into one printed product. Mergenthaler so improved his linotype that newspaper publishers were forced by the saving in cost of composition to adopt his machine. Then came a new process of stereotyping, known as the "autoplate," which trans- formed the old and laborious hand process into automatic opera^ tions. The introduction of the autoplate closed the period.