Mr. König’s next feat was the construction of a machine for printing
both sides of the newspaper at each complete traverse of the forms. This
resembled two single machines, placed with their cylinders towards each
other, at a distance of two or three feet; the sheet was conveyed from
one paper cylinder to another, as before, by means of tapes; the track
of the sheet exactly resembled the letter S laid horizontally, thus,
[S]; and the sheet was turned over or reversed in the course of its
passage. At the first paper cylinder it received the impression from the
first form, and at the second it received it from the second form;
whereby the machine could print 750 sheets of book letter-press on both
sides in an hour. This new register apparatus was erected for Mr. T.
Bensley, in the year 1815, being the only machine made by Mr. König for
printing upon both sides. See _fig._ 916.
[Illustration: 917