Improvements in and relating to Printing Machines.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Printing Machines.
I, WILLIAM EDWARD EVANS, of Lonsdale Chambers, 27, Chancery Lane,
London, W.C., Consulting Engineer (being a communication from abroad by
The Campbell Printing Press and Manufacturing Company, of 1, Madison Avenue
New York, in the United States of America, Manufacturers), do hereby declare
the nature of this invention to be as follows:-
The aim of this invention is to improve that class of printing presses which are
known in the art as reciprocating cylinder web printing machines, and the in-
vention consists in the combination in a perfecting form of this machine, of two
impression members, which are mounted in separate carriers, and which are
reciprocated in opposite directions.
The ordinary perfecting machine of this class consists of a single set of carriers
in which the two impression cylinders are mounted. As this single set of
carriers is reciprocated, it has been found that the jar of one cylinder will be
transmitted to the other cylinder, thus affecting the impression of the other
cylinder.
It has also been found that the loop of web extending from one cylinder to the
other will be slackened as the cylinders are moved in one direction, and will be
tightened as the cylinders are moved in the opposite direction. This tends to
break the web, and to effect the register of the two impressions. These objections
are done away with by the present improvement.
The improvement may be practiced in connection with any of the ordinary
forms of reciprocating cylinder printing machine; as for example, the form in
which the two type beds are arranged one over the other.
In applying the improvement, a set of guideways is provided in connection
with each bed.
On these guideways two separate sets of carriers are mounted.
An impression cylinder, and the usual web guides, and inking rollers are
journalled in each of said sets of carriers.
The two sets of carriers are reciprocated oppositely by any suitable means, as
by the use of a double crank mechanism, which may consist of two sets of crank
wheels, which are rotated in the same direction, but which have the wrist-pins
oppositely set thereon.
Any of the ordinary web manipulating mechanism, such for example, as the
one which consists of rolls which continuously feed the web in and out of the
press, and a looping frame which carries two loopers, which frame is actuated
by cams, may be employed to shift the web around the surface of the impression
cylinders relatively to the type beds when the cylinders are out of impression.
Web guides are arranged in the framing of the machine, so that the web is led
around the cylinders in the usual way so as to be perfected in its passage through
the machine.
By the above described improvement, the jar of one cylinder will not be trans-
mitted to the other, and substantially an even tension will be put upon the loop of

page_text: web extending from one cylinder to the other, no matter which way the cylinders
are moved..
Dated this 29th day of November 1899.
EDWARD EVANS & Co.,
27, Chancery Lane, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Printing Machines.
I, WILLIAM EDWARD EVANS, of Lonsdale Chambers, 27, Chancery Lane,
London, W.C., and 105, Colmore Row, Birmingham, Consulting Engineer, (a
communication from the Campbell Printing Press and Manufacturing Co., 1,
Madison Avenue, New York, United States of America), 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:-
The aim of this invention is to improve that class of printing machines, which
are known in the art as reciprocating cylinder web printing machines; and the
invention relates to the combination in a perfecting form of this machine, of
two impression members, which are mounted in separate carriages and which
preferably move in opposite directions, whereby the tension of the web will always
be in the same direction, and whereby the jar of the machine will be counter-
balanced.
To this end, this invention consists of the device described and claimed in this
specification, and illustrated in the accompanying two sheets of drawings, in which
Fig. 1 is a side elevation of one form of machine embodying the invention, and
Fig. 2 is a sectional diagramatic elevation illustrating the arrangement of parts
Referring to the drawings, and in detail, A A represents the usual side-frames,
between which are secured the form-beds B and C; and these form-beds B and C
are shown as arranged over one another, although this arrangement is not necessary
to the invention.
Coacting with the bed B is the reciprocating impression cylinder D; and co-
acting with the bed C is the reciprocating impression cylinder E, and these im-
pression cylinders are connected to move in opposite directions, as hereafter
described.
The impression cylinders may have gears on the sides of the same, which may
mesh with stationary racks in the usual manner, so that as the cylinders are
reciprocated they will be kept in proper register with the form-beds.
The cylinder D is mounted in suitable carriages or frames F, which are mounted
on the guide-ways 10, formed on the frames A; and the impression cylinder E
is mounted in similar frames or carriages G, mounted on the ways 11, secured
to the main frames A.
The carriages, F and G also carry the ordinary form or inking-rollers K, to
which ink is supplied in any of the usual manners, and by which the forms on
the bed are inked, as the cylinders are moved to and fro.
H represents the web-roll, which is mounted at one end of the frame, in any
of the usual manners; and referring to the diagram, it will be seen that the web
from this roll is led around the rolls 12, 13, and 14, then around the looping
feeding roller 15, around the stationary roll 16, then around the rolls or guides 21
and 22, carried by the carriages or frames F, and thus around the impression
cylinder D; then around the stationary rolls or guides 23 and 24, one of which
may be adjustable for the purpose of obtaining register, then around the rollers
or guides 25 and 26, carried by the frames G, to the stationary roll 27, up over
the looping-roll 28, and then around the delivery rollers 29, 30, and 310.

page_text: This course of the web will cause the same to be perfected by the impression
cylinders from forms placed on the two beds.
30 represents a shaft, which may be the driving shaft, and on the same is
arranged a pinion 31, which meshes into and drives the two gears 33 and 35,
whereby the two gears 33 and 35 will turn in the same direction.
These gears 33 and 35 are mounted on the ends of shafts 34 and 32, and on the
other ends of these shafts are arranged cranks 330 and 350, as shown in the
diagramatic figure.
The gear 33 and the crank 330 are connected by pitmen 36 and 360 to the shaft
of the impression cylinder D; and the gear 35 and the crank 350 connected by
pitmen 37 and 370 to the shaft of the impression cylinder E; and these pitmen,
as shown are arranged oppositely or at 180° to each set, whereby as the gearing
is revolved, the impression cylinders D and E will be reciprocated in opposite
directions.
From the gear 35, a gear 50 is driven, which gear 50 is mounted on the short
shaft 51 journalled in the main frame, and on this shaft is arranged a bevel-
gear 52 which meshes with and drives gear 53 fastened on the shaft 54. Arranged
on this shaft 54 is a hevel-gear 55, which meshes with and drives a bevel-gear 56;
and on the same shaft with this bevel-gear 56 are arranged cams 57 which have
shoulders 570, and which are designed to impart any proper rising and falling
movement to the looping-rolls.
The looping-rolls 15 and 28 are mounted in suitable arms 63, which are mounted
in the main. framing in any desired manner, and have connected to the ends
thereof pitmen 62 which connect to arms 58, pivotted on a shaft 59, which arms 58
have rollers 60 bearing on the cams 57.
This mechanism will impart to the looping rollers 28 and 15 the desired up
and down motion; and the gearing is so proportioned that the cams 57 will turn
twice for each complete reciprocation of the impression cylinders; and so pro-
portioned that the looping rollers will be raised when the impression cylinders
are off the form-beds in either direction, whereby the web will be shifted, when
the impression cylinders are reversing in either direction; whereby the web will
be fed into, and fed out of the press continuously and during the printing opera-
tion the web between the rollers 16 and 27 will remain stationary. Of course
the cams can be designed and proportioned so that the shift of the web will take
place as desired while the cylinders are not in impression.
The shaft 54 is continued, and has on the end thereof a bevel-gear 65, which
meshes with and drives a pinion 66 fast on the shaft 67; and on this shaft 67
is arranged a bevel-gear 68, which meshes with a bevel-gear 69, arranged on the
end of the roll 30, and the rolls 29, 30 and 310 are geared together as shown,
whereby they will be continuously turned.
Also, arranged on the shaft 67 is a bevel-gear 70, which meshes with and drives
a gear 71 fast on the shaft of the roll 13; and the rolls 12, 13, and 14 are geared
together as shown, whereby they will continuously turn to draw the web from
the roll, and feed the same to the looping roller 15.
Springs 61 are arranged as shown, and are adapted to keep the rolls 60 against
the cams 57.
In the drawings the impression cylinder D is shown as moving to the right,
and the impression cylinder E as moving to the left. This will put all the strain
on the web in a direction to pull the same from the roll 16, whereby no slack
will be created between the impression cylinders, to affect the negister.
In the other movement of the cylinders, the cylinder E will move to the right,
as the cylinder D moves to the left, and therefore all the pull will come on the
roll 27.
The feeding, of course, takes place when the impression cylinders are off the
forms, and it is immaterial, so far as the feeding is concerned, that the impression
cylinders are off the forms in opposite directions.
It is not necessary to the broad scope of my invention to arrange the beds one

page_text: over the other, as they could be arranged in any of the well-known manners;
but I have shown that arrangement as embodying one form of machine to which
my invention may be applied.
"Of course the web could be led over the lower bed first and then over the upper
bed.
An especial advantage of my invention consists in the fact that a separate
driving mechanism is used to positively reciprocate each set of carriages in the
opposite directions over the stationary form-beds.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:
1. The combination in a printing press of two stationary form-beds, a recipro-
cating impression cylinders co-acting with each form-bed, means for leading a
web around said impression cylinders, and form one to the other, and a recipro-
cating mechanism for the impression cylinders, adapted to move them alternately
in opposite directions, substantially as described.
2. The combination in a web printing press, of two stationary form-beds, a
travelling impression cylinder co-acting with each form-bed, means for recipro-
cating said impression cylinders oppositely relative to one another, and suitable
web guides and web manipulating mechanism, substantially as described.
3. The combination in a web-perfecting printing press of the side frames, two
form-beds secured thereto, two sets of guides arranged on said frames, two sets
of carriers independently mounted on said guides, an impression cylinder journalled
in each of said sets of carriers, means for independently and positively moving
said sets of carriers forwards and backwards on said guides, and suitable web-
guides, and web manipulating mechanism, substantially as described.
4. The combination in a printing press of two stationary form-beds, a recipro-
cating impression cylinder co-acting with each form-bed, and mechanism for
alternately reciprocating said cylinders in opposite directions, consisting of two
oppositely arranged crank mechanisms and gearing for rotating said cranks in
the same direction, substantially as described.
5. The combination in a printing press of two stationary form-beds arranged
one over the other, a reciprocating impression cylinder arranged to co-act with
each of said form-beds, means for moving said impression cylinders alternately
in opposite directions, suitable web guides adapted to lead a web through the
press, and from one impression cylinder to the other, and a suitable web-feeding
mechanism, substantially as described.
6. The combination in a printing press of two stationary form-beds, a recipro-
cating impression cylinder arranged to co-operate with each of said form-beds,
means for moving said impression cylinders in opposite directions, web guides
adapted to direct a web alternately around said impression cylinders, and means
for drawing said web forward around the impression cylinders, substantially as
described.
7. The combination in a printing press of two stationary form-beds, arranged
one over the other, a reciprocating impression cylinder adapted to co-act with each
of said form-beds, oppositely arranged crank-driving mechanisms adapted to
move said impression cylinders alternately in opposite directions, web guides
adapted to direct a web around said impression cylinders, and from one impression
cylinder to the other, and a feeding mechanism adapted to pull forward the web
around said impression cylinders, when they are off their respective form-beds
in opposite directions, substantially as described.
8. The combination in a web printing machine of two stationary form-beds,
a travelling impression cylinder co-acting with each form-bed, means for recip-
rocating the impression cylinders in opposite directions, web guides, and a web
feeding device arranged to shift the web in the press when the cylinders are off
impression in either direction, substantially as described.

page_text: 9. Printing presses constructed and operating substantially
described.
Dated this 29th day of August 1900.
as
hereinbefore
EDWARD EVANS & Co.,
Chartered Patent Agents,
Lonsdale Chambers, 27, Chancery Lane, London, W.C., and
105, Colmore Row, Birmingham, Agents for the Applicants.