The
very first experiment proved that the principle was right. Mr.
Cowper was asked by Mr. Walter to alter Koenig's machine at The
Times office, so as to obtain good distribution. He adopted two
of Nicholson's single cylinders and flat formes of type. Two
"drums" were placed betwixt the cylinders to ensure accuracy in
the register,--over and under which the sheet was conveyed in it
s progress from one cylinder to the other,--the sheet being at
all times firmly held between two tapes, which bound it to the
cylinders and drums. This is commonly called, in the trade, a
"perfecting machine;" that is, it printed the paper on both sides
simultaneously, and is still much used for "book-work," whilst
single cylinder machines are often used for provincial
newspapers.
After this, Mr. Cowper designed the four cylinder machine for The
Times,--by means of which from 4000 to 5000 sheets could be
printed from one forme in the hour. In 1823, Mr. Applegath
invented an improvement in the inking apparatus, by placing the
distributing rollers at an angle across the distributing table,
instead of forcing them endways by other means.
Mr. Walter continued to devote the same unremitting attention to
his business as before. He looked into all the details, was
familiar with every department, and, on an emergency, was willing
to lend a hand in any work requiring more than ordinary despatch.
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