Printing; a textbook for printers' apprentices, continuation classes, and for general use in schools (1917)
Henry, Frank Souder, 1867- · New York, John Wiley & sons, inc.; [etc., etc.] · leaf 42
n the form is inked, covered with a sheetof proof-paper, the tympan lowered, and the bed moved underthe impression-plate. A hand-lever exerts a downward motionand gives the impression. The bed is then withdrawn, thetympan lifted, and the sheet removed. (Fig. 20.) 32. The Poco Proof-press.—This… … Fig. 21.—The Poco Proof-press. the aid of a crank. The bed need not be returned for the nextproof, as it can be worked from both ends. (Fig. 21.) If desired,the sheet may be slipped under a rod tttaX acts as a gripper, andthe sheet run around the cylinder. 33. The Potter Proof-press.—There are…
Printing
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