An Improved Rotary Colour Printing Machine.
Year: 1893

page_text: Date of Application, 8th Apr., 1893
Complete Specification Left, 8th Feb., 1894-Accepted, 10th Mar., 1894
PROVISIONAL SPECIFICATION.
An Improved Rotary Colour Printing Machine.
I, WILLIAM READER, of Bethune Villa, 11 Brownhill Road, Catford, in the
County of Kent, Publisher's Clerk do hereby declare the nature of this invention
to be as follows:-
This invention relates to an improved rotary colour printing machine whereby
any desired number of colours may be printed at one operation.
My improved machine is composed of a number of cylinders corresponding to
the number of colours to be printed, each of these cylinders carrying a form or
block and being in gear with a suitable pressure roller.
I prefer to place the form cylinders around a horizontal central axis upon which
is a spur wheel imparting motion to the cylinders. Each cylinder is provided with
its own ink duct and distributing roller operated by a cam on the axle of the
cylinder and is also furnished with two or more composition rollers for inking the
block or form on the cylinder. The paper or other material to be printed upon is
carried between the cylinder and pressure roller by means of endless bands or
tapes passing over suitable rollers and with means of adjusting the tension thereof.
Motion is imparted to the main driving wheel by any available power and is
communicated to each of the cylinders by pinions upon the axles with which the
driving wheel is in gear.
Dated this Eighth day of April 1893.
COMPLETE SPECIFICATION.
An Improved Rotary Colour Printing Machine.
I, WILLIAM READER, of Bethune Villa, 11 Brownhill Road, Catford in the
County of Kent, Publisher's Clerk, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement
My invention relates to an improved rotary colour-printing machine whereby
any desired number of colours may be printed at one operation.
Upon reference to the accompanying sheet of drawings, upon which Figure 1
represents a side elevation of a machine arranged to print 4 colours, and Figure 2
an end elevation of the same, it will be seen that any improved machine is composed
of a number of cylinders A corresponding to the number of colours to be printed,
each of these cylinders carrying a form or block and being in gear with a suitable
pressure roller B.
I prefer to place the form cylinders A around a horizontal axis C upon which is
a spur wheel D imparting motion to the cylinders A by means of the pinions E.
Each cylinder is provided with its own ink duct F and distributing roller G,
operated by a cam H on the axle I of the cylinder A, and is also furnished with
two or more composition rollers K K for inking the block or form on the cylinder A.
The paper or other material to be printed upon is carried between the cylinder A
and pressure roller B, either by means of endless bands, tapes or pitch-chains L L,
Q. |

page_text: or alternatively by use of a pitch-chain in combination with a tape, passing over
suitable rollers M, and with means of adjusting the tension thereof.
Motion is imparted to the main driving wheel D by the pinion N secured on
shaft O, which is driven by the pulley P or by other available power, and is
communicated to each of the cylinders A by the pinions E upon the axles I with
which the driving wheel D is in gear.
The tapes, bands or pitch chains 1. L for carrying the paper are operated by
means of the driving wheels Q, which are driven from the last cylinder A by
means of the gear wheels R and S with which they engage. These tapes are
connected together at intervals by means of a cross-bar or rail carrying a suitable
gripping device for holding the paper, the intervals between each bar corresponding
in length to the circumference of one of the cylinders A. The grippers are so
constructed that upon the tapes or pitch-chains L carrying them over the rollers T
and U, they are automatically opened to permit of the paper being inserted and
released in succession for the purposes of feed and delivery, this action being
effected by means of springs which are compressed when the grippers pass over
the rollers T and U.
In operation the paper to receive the colour is fed on to the table Y from which
it is carried by means of the gripper between the first cylinder A and pressure
roller B where it receives its first colour; it then travels between the remaining
cylinders and pressure rollers whereby the several colours are successively printed
upon it, until it arrives at the table Z, at which point the grippers are automatically
released and the paper delivered on to the table Z.
In lieu of carrying the cylinders A around a horizontal axis, I may arrange
them in a horizontal line and parallel to each other, the pressure rollers being in
this case arranged immediately beneath the cylinders; or, I may arrange for the
cylinders to revolve around a vertical-in lieu of a horizontal axis.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A rotary colour-printing machine capable of printing any desired number of
colours at one operation, constructed, combined and arranged substantially as
-described and illustrated upon the accompanying sheet of drawings.
Dated this Eighth day of February 1894