. A short history of the printing press and of the improvements in printing machinery from the time of Gutenberg up to the present day . PETER SMITH HAND PRESS \\^ASHINGTON HAND PRESS. a track and is run in and out from under theplaten by turning a crank which has beksattached to a pulley upon its shaft. The im-pression ot the platen is given bymeans of a curved lever acting ona toggle joint, and the platen islifted by springs on either to the bed is a tympan frame coveredwith cloth, and standing in-clined, to receive the sheetto be printed. Anotherframe, called the frisket,is at
. A short history of the printing press and of the improvements in printing machinery from the time of Gutenberg up to the present day . PETER SMITH HAND PRESS \\^ASHINGTON HAND PRESS. a track and is run in and out from under theplaten by turning a crank which has beksattached to a pulley upon its shaft. The im-pression ot the platen is given bymeans of a curved lever acting ona toggle joint, and the platen islifted by springs on either to the bed is a tympan frame coveredwith cloth, and standing in-clined, to receive the sheetto be printed. Anotherframe, called the frisket,is attached to the tympan,and covered with a sheetof paper, having the partswhich otherwise would beprinted upon cut away, so as to prevent the chase and furniture from blacking or soiling the sheet. The frisket is turned down overthe sheet and tvmpan and all are folded down when the impressionis taken. Automatic inking rollers were attached to this machine,operated by a weight raised by the pull of the pressman, the descentof the weight drawing the rollers over the tvpe and returning themto the inking cvlinder while the pressman placed another sheetupon the tympan. Still further im
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectprintin, bookyear1902
