A short history of the printing press and of the improvements in printing machinery from the time of Gutenberg up to the present dayHoe, Robert
History
A short history of the printing press and of the improvements in printing machinery from the time of Gutenberg up to the present day
Hoe, Robert
Printing -- History; Printing machinery and supplies; R. Hoe & Company
There, were, however, no feeders and no grippers. The roll of paper
was placed at the end of the press, passed around the impression
cylinders arranged at one side of the form cylinder, and then turned
upside down at the lower part of the machine, thence being carried
upwards. The opposite or unprinted side was presented in turn between
each impression cylinder and the forms. If four impression cylinders
were placed around the central cylinder then at each revolution of
the latter four perfect papers were printed. If eight impression
cylinders were placed around the central cylinder then eight perfect
papers were printed at one revolution of the main or form cylinder.
The speed attained by this machine with four impression cylinders
was about 12,000 per hour, and from machines with eight impression
cylinders 24,000 copies per hour were printed. This press was
especially adapted for afternoon papers when the time or expense
necessarily involved in stereotyping could not be afforded. The
majority of the machines made were provided with four impression
cylinders only. In the machines with eight impression cylinders two
rolls were used, one at either end of the machine, the paper from
each roll passing under the two first impression cylinders on either
side, each web then being turned over, and paper passed between the
two remaining cylinders on either side to print the opposite sides of
the sheets.
In this machine a folding apparatus was placed at each end to receive
the product of the rolls, but in the machine with four impression
cylinders only one folder was placed, at the end of the machine
opposite that at which the paper entered.
The experience gained in the construction of these fast newspaper
machines, and the accumulation of patented devices entering into
them, which were numbered by the score, had their influence in the
improvements which were made upon presses for the printing of weekly
newspapers, periodicals and magazines.
[Illustration: THREE PAGE WIDE PRESS]
In 1888 was introduced a patented Hoe machine called the
“Three-page-wide Press.” It has a capacity of printing, perfecting
and delivering two-page papers, with one fold, at the rate of 60,000
per hour; four-page papers, with two folds, at 24,000 per hour,
six-page papers at 24,000 per hour; eight-page papers, folded twice,
or to carrier size, at 12,000 per hour, and twelve-page papers,
folded in the same manner as the eight-page, at the same speed, viz.,
12,000 per hour; all the supplement sheets being inset and pasted if
desired.
The prominent features of this machine are:
The outside pages may receive the first or the last impression at
will, thus enabling large cuts and other similar work to be printed
without offset.
Grippers and horizontal folding knives and all tapes but short
leaders are done away with in the delivery and folding mechanisms,
the movements being all rotary.
Public-domain text, read in full here on John Shaqi.
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