Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 531
Improved Utliographic^ress.—Fig. S117. This is believed to be the best press in use for lithographicprinting. The side-rods and top beam are made of wrought-iron; the bed and stone are raised to thetcraper by a lever and steel cam, working on a steel friction-roller; the impression is reg.Uatcd by a … olEgle screw through the top beam; the scraper is hung on a pivot, that it may accommodate itself toinequalities in the smface of the stone; the bed is made of the toughest ash plated vs ith iron, witli iro« PROJECTION. 520 I runners, ■which run on frictioii-roUprs; the tympan-frame ia…
Mechanical engineering · Mechanics · Engineering
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