. First century of national existence; the United States as they were and eing turned, caused the platen to descend,and the impression was made. The screwwas then raised, the form slid back, the frameraised, and the paper lifted and examined bythe pressman to see if his impression wasgood. If it satisfied him, lie proceededto ink his types for a new impression. Theink employed in printing is very differentfrom that employed for writing, and muchskill is required in the manufacture. Itmust be soft, adhesive, and easily trans-ferred ; it must dry quickly, and be durable,and not liable to
. First century of national existence; the United States as they were and eing turned, caused the platen to descend,and the impression was made. The screwwas then raised, the form slid back, the frameraised, and the paper lifted and examined bythe pressman to see if his impression wasgood. If it satisfied him, lie proceededto ink his types for a new impression. Theink employed in printing is very differentfrom that employed for writing, and muchskill is required in the manufacture. Itmust be soft, adhesive, and easily trans-ferred ; it must dry quickly, and be durable,and not liable to spread. The usual mate-rials are linseed oil, rosin, and coloring mat-ters, lamp-black being used for black inLThe peculiar mode of the best makers issomewhat of a secret. The old mode of ap-plying it was by two ink balls, about thesize of a mans hat, made of soft leather, andstuffed with cotton, the leather being nailedround a wooden handle. The pressman,taking one in each hand, daubed them withink, and worked them together until he hadspread the ink. He then applied them to. MATLi: 01 Kl: ^\\\ iX IKIMISi; IKH > K SCilAlli:. NKW YORK. PRINTING-PRESS HAND POWER LIGHTNING. 287 the types as evenly as possible; then, layingthem aside, ho proceeded, as before, to layhis paper evenly upon the frames, slide itup, work the screw, etc. By this process,an active man could work fifty sheets in anhour; by ten liours steady industry, hecould get off an edition of 500 copies forthe carriers in the morning;. There was lit-tle room for much expansion under such astate of printing. The first great advance inthe direction of speed, was when the leverwas substituted for the screw in making theimpression. This was introduced by Mr. JohnClymer, and called the Columbian, or Clymerpress, in which there was no screw, but thehead itself was a large and powerful lever,acted on by proportionate levers, thus bring-ing to perfection, f >r presses of a l;nge size,certain principles of l
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Keywords: ., bookauthorhodgejam, bookcentury1800, bookdecade1870, bookyear1874
