Improvements in the Construction of Two Colour Stop Cylinder Printing Machines.
Year: 1894

page_text: Date of Application, 26th Feb., 1894
Comp ete Specification Left, 26th Nov., 1894-Accepted, 29th Dec., 1894.
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Two Colour Stop Cylinder
Printing Machines.
We, WILLIAM HENRY DAWSON, and ALLAN PARKER DAWSON, of Ashfield
Foundry, Otley, in the County of York, and JAMES STOTT of the same place.
Printers Engineers, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object the novel arrangement and combination of
certain parts of printing machines having two impression stop cylinders, so
combined that, two colours, or two impressions of the same colour, may be made on
one side of sheet of paper or the like passing through the machine during each
forward stroke of the table, and in such a manner that the production is increased,
and for the machine to occupy less floor space than when constructed, and the
sheets operated in the manner as hitherto.
We accomplish our object by mounting two impression stop cylinders of equal
diameter above the reciprocating table of a printing machine operated in the usual
manner. The said cylinders are geared with the reciprocating table in a manner
that they rotate in one direction only, and are provided with grippers and placed a
certain distance apart. Between the cylinders we mount another rotating and
stopping cylinder of proportionate diameter, also provided with suitable grippers
operated in a convenient manner.
The sheets may be fed into grippers of an additional cylinder or feed drum,
placed close to and operated in conjunction with the first impression cylinder, to
which the sheets are delivered for receiving the first impression, after which they
are conveyed by grippers of the intermediate rotating and stopping cylinder to the
second impression cylinder, for receiving the second impression, during the travel
of the table in the same direction. The sheets being removed from the last
mentioned cylinder by any well known delivery apparatus.
By arranging the cylinders in the manner described, the length and stroke of the
table is considerably reduced, thereby enabling the speed of the same and other
portions of the machine to be increased, thus proportionately increasing the
production of the machine.
Dated this 23rd day of February 1894.
JOHN WAUGH,
Agent.
COMPLETE SPECIFICATION.
Improvements in the Construction of Two Colour Stop Cylinder
Printing Machines.
We, WILLIAM HENRY DAWSON and ALLAN PARKER DAWSON, of Ashfield
Foundry, Otley, in the County of York, and JAMES STOTT of the same place,
Printers Engineers, 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 :-
This invention has for its object the novel arrangement and combination of

page_text: certain parts of printing machines having two impression stop cylinders, so
combined that, two colours or two impressions of the same colour may be made on
one side of each sheet of paper or the like passing through the machine during
each forward stroke of the table, and in such a manner that, the production is
increased, and for the machine to occupy less floor space than when constructed
and the sheets operated in the manner as hitherto.
In describing this invention in detail, reference is made to the accompanying
sheet of drawings in which
Fig. 1 represents a side elevation of such portions of a stop cylinder printing
machine as are required to illustrate our invention, and
Fig. 2 a view of a modified arrangement of feeding.
Similar letters indicate similar parts where they appear.
The machine bed frame A. driving gear B. and C, reciprocating type table,
inking rollers G. and distributing rollers H. are of the ordinary construction and
operated in the usual manner.
Upon the bed frame A. are secured suitable brackets for supporting the stop
impression cylinders D. and E. of equal diameter, and are geared to the recipro-
cating table in the usual manner, so that, they rotate in one direction only, and are
provided with grippers of the ordinary description, operated by any known suitable
means.
The feed board J. is mounted at an incline, at the bottom of which may be a
feed drum K. with grippers L. for delivering the sheet to the grippers M. of first
impression cylinder D. or the sheet may be fed direct to the grippers M. by
arranging the feed board as shown by Fig. 2, in either case the first impression is
given to the sheet on passing over the type bed or forme N. travelling. in the
direction of arrow.
The sheet is then transferred to the grippers O. of cylinder P. which conveys
and delivers it to the grippers Q. of second impression cylinder E. the sheet
receiving its second impression on the same side on passing over the second type
bed or forme R. on the next outward stroke of the reciprocating table, after which
it is removed and delivered to board S. by cylinder T. and flyer U. operated in the
usual manner.
By arranging the cylinders in the manner described, the length of the stroke of
the table considerably reduced, thereby enabling the number of strokes to be
increased, and thus proportionately increase the number of revolutions of the
cylinders and production of the machine.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is,
1. The method of printing two impressions on one side of sheets of paper or the
like, by a printing machine having two impression stop cylinders of the same
diameter rotating in the same direction.
2. A printing machine with which are combined two stop cylinders of the same
diameter rotating in the same direction and combined with a transferring cylinder
all arranged and operated substantially in the manner as hereinbefore described.
Dated this 24th day of November 1894.
JOHN WAUGH,
Agent.