7100 STRAND

This frame swings Torward and s downward, and, depositingits sheetson the bench standin for therr reception, returns for more. There are two such hames, depositing cach simul- tancoushy two shects ol sixteen pages cach, and the machine can print 1,250 such sets of sixty-four pages noan hour, Fhisis a bald deseriptionof themain features of the machme, which, wonderfully compact as it s, neverthe less is o mass of ingenuities, There is o deal move skill required ine the printing of such Hlustrations as these pages contam than many arc apt to imagine. For instanee, there s the

process of over-daving e anart motselfoand Tt consists i addmye varous

a ditticult one.

M AGAZINE

OL1ICLS, (03

second plate evlinder, proviaed with ancther hateh of thirtv-two plates, which print upon it, exactly behind the original pages, thirty- two more. So far, the process has oceupied less than two sceonds. Sull the paper travels on, and passes under aosmall eyvhinder with o hidden knife, which cuts the primted papet mio strips four leaves long and leavies wide, Sull on these eal shects are carvicd - between endless bands of tape Various comphicated and unesplamable devices oive cach alternate shoet o quicker progress, carrving it over that which went before o under creasing blades and crreular knives the paper passes,and inthe end emerges

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ik Pl s

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THI PACK

thicknesses m paper to the impression evlin- der, moorder that the mmpression on cach plate shall be varied - -the darkest shadows of the cngravings receiving the heaviest prossure, the finest hines the hightest, and all intermediate shades in proportion,

The Web Pressis a wonderful construction. At one end 15 observed an immense roll of paper unwinding mto the machine at the rate ol nearly two hundred feet a mainute. This paper [irst passes over a jet of steam, which shghtly softens —does not wet - its surface next 1t passes under a eviimder covered with thirty-two curved printing plates, inked by seven rollers. 'T'his prints thirtv-two pages on one side. Then it travels to a reversing cylinder, and presents 1ts other side to a

‘\“w“ 1. .

U .

NGO ROOM,

i four-folded sections of cight pages cuch. [Light such scetions emerge at cach revolution of the evhinders all accurately printed; cut, folded and registered, and ready for the binder. At the side of the machime 1s a brass plate with glazed holes, behind which constantly changing figures denote the number of sheets turned out. T'wo lads arc kept busily at work seizing the folded parts and packing them 1 boxes on trollevs ; and yet, marvellously fast as the machinc doces 1ts work, it s all with a recular, deliberate movement which scems almosi slow.

The Stop Cyhinder Press is a smailer machine, printing, as has been scen, at a com- paratively slow rate, upon one side of the

Vol. iv —78.