IMPROVEMENTS IN PRINTING MACHINES
Year: 1865

page_text: PROVISIONAL SPECIFICATION left by William Rock at the Office of
the Commissioners of Patents, with his Petition, on the 8th August
1865.
I, WILLIAM ROCK, of Walworth, in the County of Surrey, Printer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN PRINTING
MACHINES," to be as follows:-
My Invention consists in constructing machines for printing on one or both
sides of sheets, and in a new arrangement and combination of machines
whereby many colors may be printed.
My Invention also consists in means of securing curved stereotype and other
blocks upon type cylinders, and in apparatus for cutting-paper after having.
been printed when the feed is from a continuous web of paper; also in a
frisket or apparatus for filing paper; all as hereafter explained.
I form my type cylinders, or those on which the curved blocks carrying the
matter to be printed are fixed, with bearers at the ends, that is, with collars,
between which the cylinders are of less diameter, to allow of the insertion of
the curved blocks. These blocks are secured by the overlapping edges of
frames adjustable round and across the blocks; they are secured to the
cylinders by screw bolts, and are slotted to allow of their position being
altered as required. The screwing down of the bolts fixes the frames until
readjustment or removal of the blocks becomes necessary. Over the type
cylinder I fix an inking or coloring apparatus, which consists of two diagonally
grooved rollers, the grooves in one roller run in the contrary direction to those

page_text: in the other; these receive the ink or color and pass it to small rollers, which
in turn transmit it to an interior wooden distributing roller, from whence two
rollers transmit it to the face of the curved blocks. Under the type roller is
the impression or blanket roller, and for paper to be printed on one side only,
and in one color, the machine is complete. For printing on both sides, the
paper on being printed on one side is received on another blanket cylinder,
which also serves as a carrying roller, and the paper passes between it and a
second type cylinder constructed similarly to that described.. A similar ink or
color apparatus at the side of the machine supplies the last-named type
cylinder.
For printing in, many colors I use a separate color apparatus for every
pair of type and blanket cylinders, and use between every such pair a carrying
roller for carrying the paper from pair to pair. The paper or other fabric to
be printed may be supplied in separate lengths, or from a continuous web,
and in the latter case, when the printing is finished, the paper passes between
a pair of rollers, at the back of which there is a straight edge, in order to its
being cut or severed from the rest of the web. A shaft carries a cutting blade;
the revolutions of this shaft are so regulated as to bring this blade in contact
with the straight edge, and so sever the paper at the proper moment. On the
same shaft as the blade I fit one or more fingers of vulcanized" caoutchouc,
which follow the blade and direct downwards the paper between the lower
roller and another roller where the paper is taken by a web or tape, and is
carried down to a frisket, whereby it is piled; or it may be passed over drying
cylinders.
The frisket consists of a light metal or wire frame, the parts of which are
hinged together; and act in such manner that upon the sheet of paper reaching
the end of its course a cam' causes the frisket to move, bringing it down on
the sheet, thereby laying the sheet flat and piling successive sheets upon it;
the sides of the frisket are so hinged that on coming in contact with a stop
they fold and rise without interfering with the next descending sheet.