improvements in Continuous Rotating Impression Cylinder Perfecting Printing Machines.
Year: 1894

page_text: .Date of Application, 27th Nov., 1894
Complete Specification Left, 27th Aug., 1895-Accepted, 5th Oct.,
1895
PROVISIONAL SPECIFICATION.
improvements in Continuous Rotating Impression Cylinder
Perfecting Printing Machines.
We, WILLIAM HENRY DAWSON and ALLAN PARKER DAWSON of Ashfield
Foundry, Otley, in the County of York, an1 JAMES STOTT of the same place,
Printers Engineers, do hereby declare the nature of this invention to be as
follows:-
This invention relates to certain improvements in that class of machines known as
continuous rotating impression cylinder perfecting machines, and has for its object,
the arrangement and combination of the cylinders in such a manner that, should the
machine not be required for perfecting, it can readily be changed so that each
cylinder will print a separate sheet on one side, thus converting the machine into,
or making it equivalent to, a two single cylinder one sidel machine, enabling two
sheets of the same or different sizes to be printed at the same time on one side, thus
doubling the output.
In carrying out our invention, we monnt in any convenient manner, two
impression cylinders of suitable sizes, each provided with grippers and geared
together in such a manner that, they revolve in opposite directions.
Each impression cylinder is provided with a feed board, and above the centre of
each impression cylinder, is another cylinder with grippers fitted thereto, and
grooved or the like so that flyers may be utilized for removing the sheets.
One of the last mentioned cylinders is larger in circumference than the length of
the sheet to be operated upon, and this cylinder is so placed that it can be used
either as a transferring or detainmg cylinder. When the machine is used as a
perfecter, it acts as a transferring cylinder, and when used as a two cylinder
machine, it is utilized as a delivering cylinder. The other cylinder mounted above
the centre of the impression cylinder may be of any convenient size.
With perfecting machines having four cylinders, our object may also be
accomplished by combining with one of the ordinary transfer or detaining
cylinders, an addition al cylinder provided with grippers, for removing the sheet
from the said transferring cylinder and delivering it to an ordinary flyer, switch or
set of delivery tapes, or the additional cylinder may be combined with the flyer
cylinder of such machine, and our object accomplished, in which case the flyer
cylinder is converted into a transmitting cylinder.
Dated this 24th day of November 1894.
JOHN WAUGH,
Agent.
improvements in Continuous Rotating Impression Cylinder
Perfecting 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 relates to certain improvements in that class of machines known

page_text: as continuous rotating impression cylinder perfecting machines and has for its
object, the arrangement and combination of the cylinders in such a manner that
should the machine not be required for perfecting it can be readily changed so that
each impression cylinder will print a separate sheet on one side thus converting the
machine into or making it equivalent to a two single cylinder one sided machine
enabling two sheets of the same or different sizes to be printed by the machine at
the same time on one side thus doubling the output.
In carrying out our invention we mount in any convenient manner two impression
cylinders of suitable size each provided with grippers and geared together so that
they revolve in opposite directions.
In describing our invention in detail reference is made to the accompanying
drawings representing the outline of perfecting printing machines in which the
cylinders are arranged in accordance with our invention.
In carrying out our invention, we mount in any convenient manner two impression
cylinders of suitable diameter, each provided with grippers of the ordinary
construction operated by "shapes or inclines in the ordinary manner.
"
The impression cylinders are geared together so that they revolve in opposite
directions all the cylinders revolving in the direction indicated by the arrows and
all geared together by spur wheels of equal diameter to that of the respective
cylinders to which they are secured at the end thereof in the ordinary manner.
The cylinders for transferring and delivering the printed sheets may be arranged
as shown by Fig. 1. and when the machine is used for perfecting, the grippers are
operated for holding and releasing the sheets in the following manner.
The sheets are fed from the feed board A. to the grippers 1 of the cylinder C.
and receive the first impression from the type in the ordinary manner, and when
the leading edge of the sheet arrives at or about the point indicated by D. the
grippers 1 release the sheet, which is taken up by the grippers 2 of the cylinder E.
which is larger in circumference than the length of the sheet the said cylinder in
this case acting as a transferring cylinder, and on making one revolution transfers
the leading edge of the sheet to the grippers 3, which convey and deliver it to the
grippers 4. on cylinder C' for receiving the second impression; after which it is
taken off by the grippers 5. on fly cylinder F. and removed by flyers G₁ operated
in the usual manner.
By arranging the "shapes" or inclines for operating the grippers on the cylinders
to open and close at the required times, the machine may be readily converted into
one for printing two different sheets on one side only, and when utilized for this
purpose, each impression cylinder C. and C¹ is fed from the respective feed
boards A and A¹ the grippers 1 on cylinder C taking the sheets over the type
reciprocated in the usual manner, and delivering them to the cylinder E. which
now acts as a delivering or flyer cylinder, and is grooved for the reception of
the ends of the flyer bars G. or the cylinder may be provided with tapes H.
running over the cylinder E. and a series of pullies K. for guiding the sheets to
the flyer G. so that they may be removed and deposited on delivery board L.
The sheets fed from board A¹ to cylinder C' after receiving the impression, are
transferred to cylinder F. and deposited on delivery board L₁ by flyer G¹ operated
in the usual manner.
With perfecting machines having four cylinders such as shown by Fig. 2. our
object may be accomplished by combining an additional cylinder with one of the
ordinary transfer or detaining cylinders, and when using the machine as a perfecter,
the sheet is fed from board B' to cylinder C, after the sheet receives the impression
it is transferred to the grippers 6 of cylinder C, then it is transferred to the
grippers 7 of cylinder M. which makes a complete revolution and transfers the sheet
to the grippers 8. on cylinder C+ for receiving the impression on the opposite side,
after which it is delivered to the grippers 9 of cylinder N and stripped by the
tapes and ordinary flyer G and deposited on the delivery board L'.
"
When the "shapes or inclines are arranged for operating and converting the
machine into an equivalent to a two single cylinder one sided machine, the sheets

page_text: are fed to the impression cylinders C and C+ from the respective feed boards B'
and B2, the sheet from board B' receives its impression on cylinder C it is the.
transferred to the grippers 6 of cylinder C conveyed a short distance an
delivered to the grippers 9 of cylinder N and stripped by the tapes O and ordinary
flyer G³.
The sheet fed from board B2 receives its impression on cylinder C and is
delivered to the grippers 7 on transfer cylinder M. which convey and deliver it to
the grippers 10 on Hyer cylinder P. the tapes O₁ and ordinary flyer G stripping
and delivering the sheet on board L*.
It will be obvious to persons skilled in printing machinery that by arranging the
"shapes "
or inclines the sheets fed from the board B' to cylinder C³ may be
transferred direct to cylinder N in case the latter cylinder is geared with
cylinder C³.
The additional cylinder may be arranged as shown by Fig. 3, in which case when
the grippers are operated for each impression cylinder C and C to print separate
sheets the sheets fed from board B³ to cylinder C after receiving an impression
are delivered to the grippers 11 on cylinder Co and transferred to grippers 12. on
cylinder N and finally delivered to the grippers 13 on fly cylinder P and removed
by tapes O and flyer G operated in the usual manner, or if required, the sheet
may be delivered by the flyer G' on to board LA. The sheets fed from board B
are received by grippers 14. and receive the impression on cylinder C, then it is
transferred to the grippers 12. on cylinder N₁ and may be stripped by the flyers
from cylinders N' or PT as required in accordance with the setting of the "shapes'
or inclines for operating the grippers on the respective cylinders N' and P¹.
"
By gearing the cylinders C and N₁ together, instead of as shown on drawing,
the same result is accomplished, but another set of grippers at S. will be required.
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. In a perfecting printing machine the combination of the impression cylinder C.
with a grooved transferring or detaining cylinder E. and the cylinder C' with a
linder F. the cylinders and C' revolving in opposite directions and the
cylinders E and F. working in conjunction with the respective flyers G and G'all
airanged in the manner substantially as shown and described.
cy
2. In a perfecting printing machine the combination of the cylinders C. Cand F
with a grooved cylinder E and the flyers G and G¹ or equivalent known mechanism
for delivering the printed sheets.
3. In a perfecting printing machine the combination of the cylinders C³ C and
cylinders N and M. with the additional cylinder P. and Ayer G' arranged
and operated substantially in the manner as shown and described."
4. In a perfecting printing machine the combination of the cylinders C C
and M' with the cylinders N and P working in conjunction with the respective
dyers all arranged substantially in the manner as shown and described in reference
to Fig. 3.
Dated this 26th day of August 1895.
JOHN WAUGH,
Agent.