Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . ,book, and cuppn plate paper. It is usually bibulous,the oily and viscid ink not being subject to run uponthe wet paper, toiiperplate-paiier is of the qualityof (/TO!/!H</-paper, luinus the sizing. See Papeu. Printing-press. A machine to take an impres-sion on paper or parchment from type, electrotype,or stereotype forms, steel or
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . ,book, and cuppn plate paper. It is usually bibulous,the oily and viscid ink not being subject to run uponthe wet paper, toiiperplate-paiier is of the qualityof (/TO!/!H</-paper, luinus the sizing. See Papeu. Printing-press. A machine to take an impres-sion on paper or parchment from type, electrotype,or stereotype forms, steel or cojiper plates, litho-graphic stones, etc. Presses for book or newspaper printing are broadlydirided into jlitoi and cijlindcr machines, and thelatter again into such as have a Hat type-bed recip-rocating at the same speed as the surlace speed ofcylinder, and those wliich carry the type or printingjilates on a revolving cylinder. See list on page1793. ^ ° The first printing-press was a common scre\y-presswith a bed, standards, a beam, a screw, and a mov-able platen. A contrivance for running the form inand out was afterward added. Blaew of Amsterdam made a number of improve-ments iu 1620, which entitle him to the rank of the. Franklin^s Pfesx. PRINTING-PRESS. 1796 PRINTING-PRESS. first great improver of the iiriiiting-press. His presshad a traveling lied, a [ikiteii depressed by a screwwhieh was niowd by a lever, and by a spring to raisethe screw and platen after the delivery of the inipres-aou. The condition of the press in the time of theaiost illustrious printer on record is shown by cut, uliich is taken from the original pressused by Franklin in London, and now iji the muse-um of the United .States Patent-(JHice. It is stillthe Blaevv press, with niinoj- niodiKcations. Itoperates on the screiv principle, the horizontal sweepjf the handle rotating the screw which traversesthrough a nnt in the cross-beam above, raising orlowering the platen, the center of whose u
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