Improvements in Printing Presses.
Year: 1897

page_text: Date of Application, 29th June, 1897-Accepted, 31st July, 1897
Improvements in Printing Presses.
I, WILLIAM HENRY REYNELL TOYE, of 1335 Clearfield Street, in the City and
County of Philadelphia, in the State of Pennsylvania, United States of America,
Printer, 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 printing presses, and especially to multicolour printing
presses, the object of my invention being to provide a press of this description
which shall be capable of exceptionally rapid work and shall be, at the same time,
of simple and effective construction.
The nature of my improvements will be best understood as described in
connection with the drawings in which they are illustrated, and in which
Figure 1 is a side elevation of a press embodying my improvements,
Figure 2 an end elevation thereof, and
Figure 3 a view illustrating a detail of construction.
.
A indicates the frame of the machine, B the main driving shaft supported ou
said frame and carrying fast and loose pulleys B' B upon which works the driving
belt B3; one or more spur pinions 13 secured to the shaft B, engage with and
drive gear wheels CC secured to a shaft C which carries also cams C2 and C³.
The gear wheels C and C+ engage with gear wheels D ) secured to a shaft D and
carrying sprocket wheels D D around which sprocket wheels and similar
wheels D³ ³ secured on a shaft d lying in the same plane as shaft D pass sprocket
chains E E said sprocket chains carrying the pivot of a pivot block E, which said
block is free to move vertically in the slot of a slotted arm F, said arm depending
from a platform or carriage F, supported and moving upon rollers F¹ which rest
in guides A secured to the frame. Along one side of the carriage F is secured a
rack, indicated at F3, while upon the surface of the carriage are secured a series of
type forms, indicated at G, G¹, G and G³; H, H³, H and H³ indicating inking
rollers corresponding to the various type forms on the carriage. I and i indicate
the shaft supporting the impression cylinders, said shafts also carrying gear
wheels II' formed so as to engage with the rack J³, but each having its teeth cut
away or intermitted at one point, as indicated at ¹¹, so that when this cut away
pertion registers with the rack, the shafts I and are disengaged therefrom.
Each shaft also carries supporting and driving sheaves for flexible carriers, said
sheaves being indicated at II and being cut away, as indicated at, where the
gripping bars of the carriers come in contact with the sheaves. The impression
cylinders are indicated at I" and the impression surfaces at J, J, J and J³, each
impression surface corresponding and being adapted to register with one of the
type forms on the carriage. K is the flexible carrier supported and driven as
before mentioned by the sheaves I2 between the two impression cylinders and is
carried up and over sheaves L and L³, these sheaves being supported upon shafts
to which are connected spur wheels said gear wheels being each in mesh with
one of the gear wheels I; the gear wheels 7 also drive a gear and through
another gear motion is imparted to a gear 3, which last mentioned gear is

page_text: secured to a shaft upon which are carrier sheaves, indicated at L³, over which
sheaves e flexible carriers pass, as indicated in the drawings. K¹ K² K³ K*K³ K6
and K' indicate grippers secured to the flexible carriers K and by means of which
the sheets of paper are carried through the machines and in turn under the action
of each printing couple "M indicates a cam fork, one arm of which is actuated
by the cam C while the other is actuated by the cam C. The cam fork is on the
end of a lever pivoted at M and on the opposite end of which is a device M³, here
indicated as a recess, which is adapted to engage with a device upon the impression
cylinder situated at the point where the teeth of the gear wheels, secured in said
cylinder, or to its sheaves are cut away. The device is here indicated as a
troth N, a similar engaging device n is secured to the other cylinder and engages
with a recess m on an arm m pivoted at m'; the arm m being connected with the
fork lever M by a connecting rod 0. S indicates the feed o delivery board by
which the sheets of paper are fed to the grippers on the flexible carrier. P is the
shaft to which is secured a gear wheel. På engaging with the gear wheel I' on the
shaft I, said shaft carrying a take-off roll P2 by which the printed sheets of paper
are carried away from the flexible carrier and delivered to the fingers Qwhich
Jay them down upon the table Q supported on the arms R which extend up from
the frame A of the machine.
It will readily be seen that a reciprocating motion is given to the carriage F by
the revolution of the sprocket chains E, the pivot block E supported by which
moves up and down in the slotted arm and by means" said arm moves the
carriage backward and forward. The action of the rack is to cause the
revolution of the two impression cylinders when the carriage F is moving forward
in the direction to print and the intermitted or cut away portion of the teeth in
the gear wheels I' is arranged to register with the rack at the end of the forward
stroke, and just before the gear wheels are disengaged from the rack the teeth N N
engage with the slots on the levers M and m, the cams on the shaft C coming into
action at this time and being so shaped as to arrest the motion of the
levers M and m and thereby arresting the motion of the impression
cylinders just at the proper time. These cylinders remain stationary
while the carriage is moving back, and then, as the carriage resumes .its
forward motion, the cams on shaft C actuate the fork lever M and through it
the arm miso as to cause the impression cylinders to revolve until the teeth of the
gear wheels I engage the teeth of the rack G which engagement of course insures
the continued revolution of the impression cylinders.
It will he soon that the flexible carrier bands are carried up over the. inking
rollers between the impression cylinders and, obviously, each sheet of paper is by
the arrangement shown printed upon once by each impression cylinder; thus in
the case shown where each cylinder carries two impression surfaces requiring two
passages through the machine for each sheet. By the devices shown, and herein
above described, a perfectly synchronous motion of all the operative parts of the
machine is insured, and the machine is capable of rapid and at the same.time
exact work.
•
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to bo performed, I declare that what
I claim is:
1
1. In a printing press the combination of a reciprocating carriage adapted to
support a series of printing forms, of two or more impression cylinders each having.
two or more impression surfaces, each surface corresponding to one of the type &
forms and adapted to register and co-act therewith, mechanism for driving the
cylinders at the the same speed as the carriage when said carriage moves in one
direction and arresting the motion of the cylinders during the reverse motion of.
the carriage, a flexible carrier supporting a series of grippers for engaging sheets
of paper and feeding them through the press, said grippers being arranged as 5
specified to come into opérative registry with each printing couple in the press in.

page_text: two or more revolutions of the carrier and said carrier being elevated above the
type forms as it passes between the impression cylinders and two or more sets of
inking mechanisms situated between the cylinders below the carrier.
2. In a printing press the combination of a reciprocating carriage adapted to
support a series of printing forms and carrying a rack, of two or more impression
cylinders each have two or more impression surfaces, each surface corresponding
to one of the type forms and adapted to register therewith, gear wheels secured
to each impression cylinder and in engaging relation to the rack on the carriage,
each gear being intermitted or cut away at one point so as to disengage the
cylinders from the rack, a flexible carrier supporting a series of grippers for
engaging sheets of paper and feeding them through the press, said grippers being
arranged as specified to come into operative registry with each printing couple in
the press in two or more revolutions of the carrier and said carrier being elevated
above the type forms as it passes between the impression cylinders and two or more
sets of inking mechanisms situated between the cylinders below the carrier.
3. In a printing machine the combination with a reciprocating carriage adapted
ta support printing forms and carrying a rack of two impression cylinders cach
having two or more impression surfaces corresponding to the type forms on the
carriage and each carrying a gear wheel adapted to mesh with the rack and having
its teeth cut away at one point so as to clear said rack, a starting, lever M positively
actuated and adapted to act upon one cylinder and engage it with the rack, a
starting lever m adapted to start the other cylinder, a rod O connecting
levers and m so as to operate lever m simultaneously with lever M, a flexible
carrier for supporting a series of grippers for engaging sheets of paper and feeding
them through the press, said grippers being arranged as specified to come into
operative registry with each printing couple in the press in two or more revolutions
of the carrier and said carrier being elevated above the type forms as it passes
between the impression cylinders and two or more sets of inking cylinders situated
between the cylinders below the carrier.
Dated 04 dan of T. 1007
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, WC., Agents for the Applicant.