improvements in printing machinery.
Year: 1899

page_text: Date of Application, 18th July, 1899-Accepted, 10th Mar., 1900
improvements in printing machinery.
I, HENRY EDWARD NEWTON, of the Office for Patents, 6, Bream's Buildings,
Chancery Lane, in the County of London, Patent Agent, 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 printing machinery.
It is a well known fact that a rotary movement of the several parts is
advantageous in all heavy machinery, and particularly so in printing machines.
In machines which print upon a web, there is no difficulty in making use of
the rotary principle, because, since the paper to be printed is supplied to the
machine in web form, it can be presented thereto at a rate of speed which is
practically unlimited. The speed at which the machine is run, therefore, is in
no way dependent upon the rate of feed of the material to be printed. All parts
of the machine may, if thought desirable, therefore, be constructed upon the
rotary principle, and run at high speeds. When, however, attempts are made to
apply the rotary principle to machines for printing on sheets certain practical
difficulties immediately present themselves. The speed at which the sheets can
be fed is necessarily limited, and this limitation is increased by the difficulty
experienced in feeding sheets to a continuously moving sheet-taking member with
that accuracy which is necessary in order to preserve register and produce good
printing.
It has been heretofore proposed to construct sheet-printing machines in which
the sheet-receiving member has been brought to a stop in order to enable the
sheets to be fed thereto, the said member being kept in continuous motion at
other times, and these proposed constructions have embraced machines in which
the co-operating members of the printing couple have, in some cases, both been
rotating cylinders, and in other cases rotating cylinders and reciprocating beds.
In some of these constructions, the impression cylinder has been the sheet
receiving member, and in other constructions an additional sheet-receiving
member, such as the ordinary feeding in cylinder, has been added to the machine.
In all cases, however, these proposed constructions have necessitated the use of
complicated and expensive devices, and difficulty has been experienced in so
constructing the operating mechanisms as to enable the sheet-receiving member
to be brought to an easy and gradual stop, and then speeded up again to the speed
of the other continuously running parts of the machine, without producing shocks,
jars, and undue strains upon the operating mechanisms.
Furthermore, so far as has been ascertained, these proposed constructions
have been confined to machines employing but a single printing couple, and
are, therefore, adapted to deliver but a single impression on the sheet.
The invention which forms the subject of this application has for one of its

page_text: objects to provide improved devices by which a movable member, such, for
instance, as the sheet-receiving cylinder of a printing machine, may be coupled
to and uncoupled from a moving member, the engagement being effected in
such a manner as to gradually start the movable member, and cause it to move
with a constantly accelerating speed, until its surface movement becomes uniform
with the member to which it is connected, to maintain this uniform movement
of both members during a desired period of time, and then to gradually retard the
movement of the movable member, and, if it be desired, as will usually be the
case, to bring it to a full stop, uncoupling it from its cooperating moving member.
It will be seen that a mechanism such as has been referred to, may be used to
control the movement of the sheet-receiving cylinder, varying it, preferably by
stopping and starting it, so that a sheet may be fed thereto, after which the
said sheet-receiving cylinder may be brought up to the speed of the remainder
of the machine, and that it is applicable not only to construction in which the
sheet-receiving cylinder is a member of the printing couple, but also to con-
structions in which an independent sheet-receiving member, such as the ordinary
feeding cylinder, is used. By the use of constructions such as above outlined,
it is obvious that all parts of the printing machine in which it is employed may
be constructed on the rotary principle. The invention may, however, be applied
to machines in which all the members are not constructed on the rotary prin-
ciple, as, for instance, machines in which the printing couple consists of a cylinder
and a reciprocating bed.
A further object of the invention is to produce a printing machine in which
the idea of a sheet-receiving member having a varying speed, to enable the
sheet to be fed thereto, is applied to constructions which employ more than a
single printing couple, and are, therefore, adapted to deliver more than a single
impression upon the sheet. This part of the invention embraces constructions
in which the sheet-receiving member is either one of the members of one of the
printing couples, or an independent member, such as the ordinary feeding
cylinder.
While the mechanism by which this part of the invention is carried into
effect will preferably include, as one of its features, the controlling mechanism
which has been referred to in the preceding statement of the objects of the
invention, this part of the invention is not confined to the use of that particular
mechanism. While, also, the printing machines constructed in accordance with
this part of the invention will preferably be of the purely rotary type, the
invention is broad enough to include machines in which some of the couples, or
parts of some of the couples, may be constructed on other than the rotary prin-
ciple, as, for instance, reciprocating beds, and also to include, in some instances,
constructions in which a single rotary member as, for instance, the form carrier,
will cooperate with more than a single member, as, for instance, two impression
cylinders.
This part of the invention includes also constructions by which a sheet may be
caused to receive a plurality of impressions on one side, or may receive one
impression upon one side, and another or perfecting impression on the opposite
side.
A further object of the invention is to produce an improved tripping machine
by which one of the members of a printing couple, preferably the impression
cylinder, may be caused to remain at rest, while the movement of the remainder
of the machine proceeds as though the printing operation were actually in pro-
gress. This part of the invention also includes generally mechanism for locking
the member thus tripped, which is usually the impression cylinder, and a safety
device for preventing the operation of the tripping mechanism, except at specified
time.
A further object of the invention, which relates more particularly to the inking
devices, is to produce an improved mechanism by which the form-inking rollers
may, when desired, be moved away from the position which the occupy when they

page_text: are applying ink to the form, in order to prevent the said rollers from becoming
flattened by remaining in contact with the form when the machine is not being
used, and also to prevent the rollers from producing a stain upon the form by
continued contact therewith, while the machine is at rest, as would happen
when the printing surface with which they cooperate was a planographic surface.
This branch of the invention includes means by which the devices may be
operated by hand, or automatically, from the starting and stopping mechanism of
the machine, as may be found desirable.
A further object of the invention is to produce an improved mechanism by
which the inking rollers may be allowed to run in contact with each other, and
with the distributing surface, but be held out of contact with the form, whereby
the machine may be run prior to the time when the printing operation is begun,
for the purpose of "inking up." By this operation, the ink becomes thoroughly
mixed and broken up on the rollers and distributing surface, and is evenly applied
to the inking rollers before they apply it to the form.
A further object of the invention is to so arrange the inking devices, through
improved means, that a greater amount of ink is supplied to those form rollers
which the form first meets in its movement, than to the other rollers, whereby a
more even and better distribution of the ink on the form is attained.
When the plate-carrying member of the printing couple of a printing machine
is a rotary member, as will preferably be the case with the mechanisms which
are embraced in this invention, the form surface will preferably be of a plano-
graphic character, and will consist either of aluminum or zinc plates. The
invention also includes, therefore, improved devices by which printing plates of
aluminum or zinc may be strained to their seats, the particular object of this
part of the invention being to produce simple, cheap, and compact devices by .
which all parts of the plates may be evenly strained, and which devices, at the
same time, require but narrow openings in the cylinder for their manipulation,
whereby a very large proportion of the surface of the cylinder may be utilized
for plate carrying purposes.
While the devices which are embraced in this part of the invention are par-
ticularly intended for use in securing printing plates upon cylinders, they are
also adapted for use in connection with supporting surfaces which are not
cylinders, as, for instance, flat beds. It is to be understood, therefore, that the
devices embodying this part of the invention are not limited to use with cylin-
drical plate-carrying surfaces.
In the accompanying drawings which form a part of this invention, and in
which like characters of reference indicate the same parts:-
Figure 1 is a side view of a printing machine having a continuously rotating
plate cylinder and a rotary stop impression cylinder, said machine illustrating
more particularly the improved devices for stopping and starting said impression
cylinder, by coupling it and uncoupling it from the continuously-rotating plate
cylinder.
Figure 2 is a plan view of the construction shown in Figure 1.
Figures 3 to 8, inclusive, are diagrammatic end elevations of the impression
and form cylinders, showing their parts in various relations during the printing
operation and the operation of stopping and starting the impression cylinder.
Figure 9 is a diagrammatic super-imposition of the coupling levers.
Figure 10 is a side elevation of a machine generally similar to that shown in
Figure 1. illustrating more particularly the improved devices for manually con-
trolling the inking mechanism for regulating the supply of ink and for tripping
the impression cylinder.
Figure 11 is a plan view of the machine shown in Figure 10.
Figures 12. 13 and 14 are detail views illustrating more particularly the con-
struction and operation of the tripping mechanism before referred to.
Figures 15 16. and 17, are detail views illustrating more particularly the devices
relating to the inking mechanism.

page_text: Figure 18 is a side view of a machine generally similar to that shown in
Figure 10, but with certain parts there shown omitted, the purpose of the figure
being more particularly to illustrate the application of an automatic means for
raising the inking rollers away from the form when the machine is stopped.
Figures 19 and 20 are detail view of the machine illustrating in Figure 18.
Figure 21 is a side view of a printing machine of the rotary type, having a
plurality of printing couples, and embodying devices whereby the sheet-receiving
member of one of the couples is stopped to receive the sheet.
Figure 22 is an end elevation, looking from the left hand, of the construction
shown in Figure 21.
Figures 23 and 24 are detail views illustrating the operation of said machine.
Figure 25 is a side view of a machine somewhat similar to that illustrated
in Figure 21, but having its parts arranged to deliver two impressions on the
same side of the sheet.
Figure 26 is an end elevation looking from the left hand, of the construction
shown in Figure 25.
Figure 27 is a side view of a printing machine having a plurality of couples,
and in which an intermittently stopped and started feeding cylinder is used to
supply the sheets to the couples which, in this machine, are intended to be
continuously operating.
Figure 28 is a back view, looking from the right hand, of the construction
shown in Figure 27.
Figures 29 and 30 are detail views illustrating more particularly the devices
for controlling the feeding cylinder.
Figure 31 illustrates a machine generally similar to that shown in Figure 27,
constructed to deliver two impressions on the same side of the sheet.
Figure 32 is a sectional elevation of the construction shown in Figure 31.
Figure 33 is a side view of a multicolor printing machine, in which the forms
are carried on a single rotary member, which has cooperating with it a plurality
of impression members, means for transferring the sheet from one member to the
other, and includes devices by which the sheet-receiving member is stopped to
receive the sheet, the remainder of the members of the machine being continuously
rotated.
Figure 34 is an end elevation, looking from the left hand, of the construction
shown in Figure 33.
Figures 35, 36, 37, and 38, are detail views illustrating successive positions of
the parts of the machine during the printing operation.
Figures 39 and 40 are detail views illustrating the devices for controlling the
operation of the inking rollers.
Figures 41 to 64 are detail views illustrating various forms of devices for
holding flexible printing plates in position on their form carriers.
Referring more particularly to the constructions shown in Figures 1 to 9,
the machine consists of a form, plate-, or type-cylinder B, and a sheet-receiving or
impression cylinder C, which cylinders are so mounted in the side frames A, as
to suitably revolve, and coact in producing the impression. In this instance,
the form, plate, or type cylinder B is twice the diameter of the impression
cylinder C, but this may vary, as is well understood.
The cylinder B is provided at one end with a gear 12, which meshes with a
gear 11 mounted upon a cam shaft 3. and which latter gear 11 meshes with a
pinion 10 on the driving shaft 2, and which shaft is provided with driving pulleys,
as is usual motion thus being imparted from the driving shaft through pinion 10
and gears 11. 12, to the form cylinder B.
The cylinder C is provided at one end with a segment 30, and the form o
plate cylinder B is provided at the same end with a segment 31, which segments 30
and 31 are caused at proper times to intermesh, and thus enable the cylinder B
to drive cylinder C, and the two to move in unison during a portion of a rotation
of the latter, or while the printing operation is effected. At its opposite end,

page_text: the cylinder C may, if desired, and as is shown, be provided with a similar seg-
ment, which will, in like manner, coact with the gear 12 on cylinder B.
The shaft of the impression cylinder C is provided with a gear 40 fast upon it,
which meshes with, and drives a gear 41, fast on the shaft of the delivery
cylinder 44, by which the latter moves concertedly with the impression cylinder
for the delivery of the sheets, and these sheets are, in the instance shown,
delivered to tapes 42, whereby they are carried over fly fingers 43, by which they
are laid upon a piling table in the ordinary way.
The impression cylinder C is provided with sheet-grippers 33, that are operated
to receive the sheet fed to them from the table 50, and to carry the same around
with said cylinder, and into contact with the form, plate, or type on the cylinder B,
and to release the printed sheet to the delivery cylinder 44, as is common, the
latter, of course, having receiving grippers, or to equivalent transferring device,
or a guiding device for accomplishing the smooth and effective passage of the
sheets from the cylinder B to the final delivery device.
The plate or form cylinder B, in the machine which has been selected to illus-
trate the invention, is double the size of the impression cylinder C, and is pro-
vided with a plate or form-carrying portion equal in circumferential extent
to that of the impression surface of the cylinder C. It also has an ink-distributing
surface, and is equipped with suitable ink-supplying devices, and may have
associated with it plate-damping appliances, in case the machine is designed to
print from planographic surfaces. The damping appliances are, or may be, of
any suitable construction, and it is not deemed necessary to show them. The
machine is further provided with form-rollers R2, which are supplied with ink
from the distributing surface, and which act to ink the form in the usual manner.
In order that the impression cylinder C may be brought into, and remain, in
a state of rest, at which time a sheet is fed to it, and then be started in its
revolution, and have its movement accelerated to that of the form or plate
cylinder B, have its segment 30 moved into gear with the segment 31 of the
said cylinder B, so as to be driven thereby at uniform surface speed therewith,
and, after having thus been rotated during the making of the impression, have
its movement gradually slowed down, when the segment 31 runs out of
gear with
the segment 30, and then brought to a state of rest in its normal position, for
the reception of another sheet, and be uncoupled from said cylinder B, without
diminishing the normal movement of the latter cylinder, the cylinder B is pro-
vided with two coupling levers 20, 21, which levers are respectively pivoted to
the head of cylinder B, at its non-gear end, by means of suitable studs 4, 5.
The inner or actuating arm of each of these levers 20, 21, is provided with an
antifriction roll, as 6, 7, which runs in a path cam 60, which is bolted to the
side frame in a stationary position, and suitably curved to produce the requisite
movements of said levers. The forward ends of these levers 20, 21, are slotted,
so as to properly enter over, engage, and withdraw from, studs or rolls 8. 9.
that are carried by, and project beyond, one end of the impression cylinder C, at
suitable distances apart between the ends of the segment 30.
The function of the lever 20 is to engage with the roll 8, to start the im-
pression cylinder C from its state of rest, and move it to such an extent that its
segment 30 shall be in position to gear with the segment 31,-its corresponding
segment, if that be used, being simultaneously brought into position to mesh
with the gear 12.
The function of the lever 21 is to engage the roll 9, as the segment 30 is
running out of gear with the segment 31, while both cylinders are moving at
the same speed, and cause the impression cylinder C to complete its necessary
rotary movement, but at a diminishing speed, and leave it in its proper position
of rest, for the reception of the sheet to be printed.
The exact operation of these mechanisms will be more fully hereinafter
described, but, first, since it is desirable, though not essential, that the stopping
of the rotation of the cylinder C shall be aided by a mechanism for overcoming

page_text: its momentum, and with a locking device, when the cylinder is to be stopped, the
means for accomplishing these objects, and adopted herein, will first be explained.
The shaft of the impression cylinder C is provided, outside of the framework,
with a brake wheel 61, around which a friction band 62 is stretched, said band
having its ends attached at different points to the outermost arm of a bell-crank
63, that is pivoted at 64 to the side frame, said bell-crank having its inner arm
pivoted to a rod 65, that is guided over the cam shaft 3, and has a roll that is
pressed upon by the cam 66 on the cam shaft 3, which cam is so shaped as to
tighten and loosen the friction band 62 at suitable intervals.
In order that the cylinder C may be locked in a position of rest, suitable to
hold its sheet-receiving grippers 33 in position to receive the sheet, and its roll 8
in position to be engaged by the lever 20, said brake wheel 61 is provided with
a stud 1 projecting from its inner face, with which cooperates a stop lever 70, thas
is pivoted to the side frame 71, and has its upper end forked to engage with said
stud 1, and its lower arm 72 is provided with a stud that runs in the groove of
a cam 73 fast on the cam shaft 3.
If the brake mechanism and the stop lever 70, each or both, are used, it
will be understood what when the cylinder C is to be started into rotation, the
brake mechanism will be released, and the stop lever will be disconnected from
said cylinder, so that it may be set into rotation by the action of the lever 20,
carried by the continuously-moving cylinder B, geared thereto, and after making
nearly a revolution, be slowly retarded, and brought to a state of rest by the
lever 21, the slowing down operation being aided by the brake mechanism,
and the stopping action being rendered positive by said stop lever 70. It will
be understood that when the brake mechanism and stop lever 70 are present,
they are thrown out of action slightly before, or simultaneously with, the com-
mencement of the operation of rotating the cylinder C, the performance of
which operation will be understood by the following description thereof, taken in
connection with the diagrams Figures 3 to S inclusive.
In Figure 3 the parts are shown in the position which they have, when the
constantly rotating cylinder B is bringing its coupling lever 20 into engagement
with the roll 8, carried by the sheet-receiving cylinder B, to start the same.
As the cylinder B moves continuously in the direction of its arrow, and the
cam 60 is properly shaped therefor, said cam will cause the lever 20 pivoted to
the cylinder B to so move onwardly and outwardly, that its outer bifurcated or
slotted end will pass over the roll S, and thus securely couple the two cylinders
together, so that they will thereafter revolve in unison. The outer end of this
coupling lever 20 first meets the roll 8, as is shown in full lines in Figure 3,
when the cylinder C is stationary, and in moving from this position with the
cylinder B the distance shown by the dotted lines in said figure, this lever is not
only passed over that roller, but has, in so doing, started the cylinder C with an
accelerating motion, by the engagement of the rear or driving face of its slotted
end with the roll S. In moving with said cylinder B to the extent shown by
full lines in Figure 4, the lever 20 remains fully compled with the roll 8.
It thus smoothly engages the roll 8, and thus not only starts the impression
cylinder C into rotation from its state of rest, but moves it with a gradually
increasing speed until its movement is uniform in speed with that of the cylinder
B, at which time the segment 30 of cylinder C will be engaged with the seg-
ment 31 of the cylinder B, which latter thereupon drives the cylinder C, at
which time the coupling lever 20 will have been so moved inwardly by the shape
of the cam 60, as to withdraw said coupling lever from engagement with the
roll. 8, as seen in full lines in Figure 4, thus admitting of cylinder C being
wholly driven by the gearing.
When this meshing of the two segments is effected, and constitutes the means
for rotating cylinder C from cylinder B, the lever 20 has, by the shape of the
cam 60, been so far withdrawn from engagement with the roll S, as to enable the
two to pass out of engagement during the continued rotation of the cylinders.

page_text: Lever 20 thereafter takes the position shown in Figure 6, ready to repeat its
operation just described. The cylinder then makes the major part of its
rotation, driven by the segments, to perform the printing operation, as is seen in
Figure 5, and when during this rotation, the segments are about to run out of
gear, as is seen in Figure 6, the coupling lever 21 is brought into engagement
with the roll 9, in like manner as was lever 20 in connection with roll 8, thus
causing the cylinder C, when it ceases to be driven by the segments, to be further
moved from its position in Figure 6, to that of Figure 7.
This coupling lever 21 first engages the roll 9, as shown in full lines, Figure 6,
and fully engages the roll, as shown in dotted lines therein, and operates to
gradually slow down the movement of the cylinder C, until the position shown
in Figure is reached, at which time the stop lever 70, if used, is brought into
action to engage with the stud 1 on the brake wheel 61, whereupon the cylinder C
is locked in its normal or sheet receiving position, the arresting of said cylinder
having been aided, if desired, by the brake mechanism. The lever 21 is there-
after, by the further rotation of the cylinder B, withdrawn from the roll 9, as is
seen in Figure 7 in full lines in like manner, as was the lever 20.
The cylinder C is thus stopped in its normal or sheet-receiving position, as in
Figure 8, while the cylinder B, continuously rotating, completes its rotation ;
the lever 21 is withdrawn to its inward position, as in Figure 4; and the
mechanisms are again brought into position to repeat the operations described.
The relative shapes of the cam 60, lever 20, and the slot in its end, are such
that, while the slotted end of the lever 20 is just approaching, and meets the
stud 8, the line of motion of its slotted end is parallel with the sides or bearing
surfaces of its slot, but as the cam 60, acting upon the stud 6 of this lever, rocks
the same, it causes the slotted end of said lever to constantly deviate angularly
from this parallelism, which angular movement, in conjunction with its forward
movement, constantly imparts increasing speed to the roller S, and, through it,
to the cylinder C, until it leaves the roller 8, when the angle at which it is then
related to the roller 8 is such, that the result of the outward and forward move-
ments of the lever will impart a uniform surface speed to cylinder
cylinder B, at which time the segments 31 and 30 will be engaged to drive this
cylinder C, whereupon said lever will have ceased its driving action.
with
The segments 30, 31, then drive the cylinder C through nearly one rotation, and
bring the lever 21 into position to couple with roll 9, to enable the cylinder C
to be brought gradually to a state of rest. This lever 21 operates in a manner
the opposite to that of lever 20, that is, engages the roll 9 of cylinder C at its high
or normal speed, and constantly diminishes the same until said cylinder is
arrested. The operation will be best understood from Figure 9, where the
levers 20 and 21 are illustrated in their first contact with the rolls 8, 9, with
which they co-act, the single roll marked 8, 9, in said figure representing both
rolls. The levers, superposed in this figure to show this operation at such time
have their bearing sides in the same relation to said rolls, though in reversed
position, that is to say, the angles a and b are equal. The parallel sides of the
slot of this lever 20 will first engage the stud 8 at the least operating angle of
this lever (Figure 3), which is parallel with its movement, and leave it at its
greatest operating angle (Figure 4), which is when both cylinders are moving at
the same speed.
But under the same operating conditions, that is, when the stud 7 of lever 21
is in the same position on the cam as the stud 6 of lever 20 was (compare
Figures 3 and 6, or see Figure 9), it will be perceived that the
lever 21 will engage
the stud 9 while said lever 21 is at its
greatest operating angle, in which it will impart a motion equal
to the surface speed of the cylinders, and, by comparing Figures 4 and 7, it will
be apparent that this lever 21 will leave said roll 9 when this lever is at its least
operating angle (Figure 7), or when the parallel bearing sides or actuating sur-
faces of this lever are parallel with its movement. It will be noticed that the

page_text: operating surfaces of the lever 20 and the lever 21 are inclined to the path of
movement of the cylinder B, by which they are carried.
Various changes can be made in the construction for operating the coupling
levers which have been before described. Thus, for instance two cams might
be provided at opposite ends of the cylinder B, one for operating the lever 20, and
the other for operating the lever 21.
Devices other than cams might also be used for directly operating these levers.
Referring to the construction illustrated in Figures 10 to 17 inclusive, which
illustrate more particularly that part of the invention relating to the inking and
tripping mechanisms, the form and impression cylinders are preferably pro-
vided with the segmental gears 30, 31, and the coupling levers 20, 21, for trans-
mitting intermittent and graduated motion from the cylinder B to the cylinder C,
and causing the latter cylinder to come to a stop during each revolution of the
former cylinder, this mechanism being the same, and operating in the same
manner, as set forth in connection with the description of the construction shown
in Figures 1 to 9. The cam-actuated brake and stop for arresting the motion of
the impression cylinder, and locking it in a position of rest, are also generally
similar to the constructions previously described though inasmuch as the driving
connections of the machine shown in Figures 10 to 17 are somewhat different
from that shown in Figures 1 to 9, the arrangement of these parts is also some-
what different.
A
In order that the rotation of the impression cylinder may be stopped when
desired, without interfering with the operation of the remainder of the machine,
the segment 30 is formed on a wheel or short cylinder I, detached from the
cylinder C, and rotating freely on the cylinder shaft J. The wheel I has a
flange projecting within the cylinder, and provided with a notch
shaft K is journaled in the two ends of the cylinder, and carries, keyed upon it,
an arm K, provided with a lag K", adapted to fit the notch 21 at the other end
of the shaft K, and beyond the end of the cylinder is a bell-crank lever L, on one
arm of which is a stud 7, and to the other arm of which is connected a spring
which exerts a pressure upon the shaft K, to force the lug k" into the notch ¹¹.
Projecting from the end of the cylinder is another stud 7. Keyed upon the
short shaft M, journaled in the frame, is the hand (or foot) tripping lever m.
The shaft M is in line with the shaft K, and carries on its end, inside the frame,
a three-armed lever N. One arm n of this lever carries two lugs, which are
adapted to engage with the stud 1, as shown in Figure 13. The second arm n¹
carries two lugs adapted to engage with the stud 1, as shown in the same figure.
The third arm has pivoted thereto a link 0, the other end of which is slotted,
and rides over a pin o, projecting inward from the press frame, opposite the
plate cylinder. This link carries a lozenge-shaped stop o¹ which is adapted to
engage with a segmental rib ol, projecting from the end of the plate cylinder.
The operation of this mechanism is as follows:-In normal operation, the
impression cylinder is locked to the wheel I by the lug entering the notch ",
and the two move together in all respects as though a solid cylinder. When
it is desired to trip the cylinder, the lever m is elevated, whereupon the lug kl
is withdrawn from the notch ", the shaft K being rocked by the engagement of
the lugs on arm n' with the stud 7. At the same time, the lugs on arm n engage
with stud, and the cylinder is thereby held fast in the position it then occupies.
The wheel I now revolves alone in connection with the plate cylinder, leaving the
impression cylinder at rest. When it is desired to prevent the revolution of
the cylinder for some time, a pin may be inserted under the tripping lever,
as shown in Figure 13. When the cylinder is merely tripped because of the
failure to feed a sheet, and it is desired to lose but one revolution, the tripping
lever is released at once, after being thrown, as described, and the spring
forces the lug kl into the notch, when this notch next comes opposite the
lug, thereby again locking the cylinder to the wheel I.
It is necessary to prevent attempting to trip when the impression cylinder is

page_text: in motion, as by so doing the mechanism would be subjected to probable injury,
and to this end the safety device, consisting of the link o and connected parts,
provided. The segmental rib ol is of such length and position as to lie in
front of the lozenge o, when the impression cylinder is in motion, and prevent
movement of the tripping lever, as shown in Figure 12. When the impression
cylinder has come to rest, the rib ott is out of the way, and the link O is free to
move to the position shown in Figure 13.
It will be observed that the wheel 1, owing to the extension on which are
placed the studs or rollers 8, 9, with which the coupling levers engage, may not
have sufficient weight to, of itself, accurately preserve its position, when dis-
connected from the impression cylinder, its brake and stop, and from the plate
cylinder. To cause it to hold its position when disconnected, the outer surface
of the extension P is made to concave in about the curvature of the plate cylinder,
and the latter is provided with a segmental abutment P, which is of such a
length, and so placed, as to be opposite to, and in contact with, the extension P,
during that part of the revolution of the plate cylinder during which the cylinder
is disconnected from the wheel I. The curvature of this abutment is the same as
that of the extension P, and it prevents displacement of the wheel I during this
time.
The mechanism for manipulating the ink rollers will next be described.
When the ink is first put in the fountain, it is desirable to make several revolu-
tions of the press, in order to get sufficient ink on the ink plate and rollers, and
during this time the rollers should not come in contact with the forms. To
provide for accomplishing this, the ink rollers R² are mounted upon brackets R R¹
sliding in the frame of the press, and each provided with a stud r. On each end
of the cylinder shaft is mounted a cam S, having a raised portion. On each end
of the shaft, between the cam S and the end of the cylinder, is pivoted a lever s,
which carries pivoted levers s', s, having rollers which run upon the cams S.
In the position of levers s, shown in Figure 15, these levers s¹, s, are in radial
line with the studs r, and when their rollers ride on the raised portion of the
cams S, they push the ink roller brackets outward, so that the plate may pass
under them without contact. The raised portions of cams S correspond in length,
of course, with the portion of the circumference of the cylinder occupied by the
forms.
When the press is to be used for printing, the levers s are carried to the
position shown in Figure 10, the studs r being, in that position, out of range
of movement of levers $1 $11
When the press is stopped it is desirable to lift the ink rollers clear of the
plates, and to do this, the levers s are provided with raised inclines s, which
make contact with studs r, when the levers s move to the position shown in
Figure 16, and push up the brackets R, R. The levers s are each preferably
provided with a segment 75, which may be operated by two segnients 751, one
on either side of the machine, connected by a shaft, which is operated by a
handle 75, as shown.
This part of the invention also includes an improvement relating to the ink
rollers, as follows:-The ductor roll Y oscillates between the fountain roller U
and the distributing cylinder V in the usual manner, it being journalled in arms
fixed to the rock shaft u. From the cylinder V, roller V₁ conducts the ink to
a group of ink rolls on the side next to the impression cylinder, and roller V
conducts the ink to a group on the opposite side. Now it is plain that if the
roller runs constantly in contact with cylinder V and its group of form
rollers, the larger part of the ink will be carried by roller VI to the group of ink
rollers nearest the impression cylinder. This is detrimental to good printing,
since the ink does not have sufficient distribution. It would be better if part of
the ink could be sent to the other group of ink rollers, when it would be better
distributed before printing. To accomplish this, the roller V₁ is mounted on
brackets swinging on the shaft of distributing cylinder V. On each bracket is

page_text: .
formed a toothed segment, which gears with seguients placed on each end of the
shaft u.
Therefore, when the shaft u rocks, to throw the roller Y into contact
with cylinder V, it lifts roller VI out of contact with its group of ink rollers.
The first, and larger part, of the ink thus passes onto the roller V and the
other group of ink rollers, and is more thoroughly distributed, before reaching the
plates, than it otherwise would be. At the same time, the roller V₁ is kept in
contact with cylinder V, and its full distributing power preserved. Of course,
any other suitable form of mechanism may be used for causing the vibration of
roller, without departing from the invention.
In the mechanism which has just been described, the inking rollers are lifted
clear of the forms by means of a manual operation. In some cases, however, it
is desirable to so arrange the construction that the lifting of the inking rollers
will be automatically accomplished when the machine is stopped. In Figures 18
to 20, inclusive, improved devices are shown, by which, when the machine is
stopped, the loose pulley, acting through a suitable train of connections, operates
the ink-roller lifting levers, and causes the cam faces to raise the slides, and
the ink rollers supported thereon, away from the forms. Referring to Figure 18,
it will be seen that the mechanism which has been selected to illustrate this part
of the invention, is generally similar to that shown in Figure 10, that is to say,
there is provided a continuously rotating form cylinder B, and a rotary stop
impression cylinder C. The rotating form cylinder is preferably provided with
the pivoted hooks 20 and 21, which stop and start the impression cylinder, these
hooks being controlled by the cam 60, and engaging suitable studs on the im-
pression cylinder. Intermeshing segments will be located on the plate and
impression cylinders, in order to rotate these cylinders in unison during the print-
ing operation. These segments have, however, been omitted from these figures of
the drawings, in the interest of clearness of illustration.
The plate or form cylinder B is carried on a shaft 13, which is mounted in
suitable journal boxes, and is rotated from the driving shaft by any suitable
form of connections. The main shaft 2 is mounted in suitable standards or
bearings 15, only one of which is shown, and is provided with a loose pulley 16
and a fast pulley 17. The fast and loose pulleys, in connection with the bolt,
shifter, to be hereafter referred to, constitute a convenient and well-known form
of stopping and starting mechanism. Many other forms of stopping and starting
mechanism may, however, be substituted for this form, as this part of the
invention is not primarily concerned with any specific form of such mechanism.
The shaft 2 is operated by a belt running to any convenient source of power,
and is further provided with the usual balance wheel 18.
On the shaft 2 is mounted a loose gear 19, this gear being connected to the
loose pulley in any suitable manner, as by bolts. Meshing with the gear 19
is an intermediate 22, which is mounted on a short stud 23, which is supported
in a bearing 24 on a bracket 25, projecting from the frame. At the other end of
the bracket 25, there is located a short shaft 26, which has bearings both in
the bracket 25 and in the frame of the machine. This shaft 26 supports a gear
wheel 27, which meshes with the intermediate 22 before described.
The shaft 26 also carries a sliding toothed clutch collar 28, which is splined
to the shaft in the usual manner. This clutch collar 28 has a groove 29, which
is engaged by a pin 32, mounted on lever 33, the said lever 33 being pivoted on
a bracket 34, which is suitably supported on the frame of the machine. The
lever 33 has a projection 35 extending from its side near the bottom, and it has
its upper end bent to form an extension or nose 36, the purpose of which will
hereafter appear.
The shaft 26 supports a loose gear 37, the hub of which is toothed, to form a
clutch member 38, which at certain times is engaged by the clutch member 28
before described.
The machine is provided with the usual belt-shifting lever 39, which is pivoted
to a bracket 44 on the frame of the machine, and carries an extension 45, by

page_text: which the belt 46 is shifted from the fast to the loose pulley, or vice versu, as the
occasion requires.
The belt-shifting lever 39 carries a small swivel bearing 47, which is con-
nected to the lever by a nut 48, and this swivel bearing supports one end of a
rod 49. The other end of the rod 49 carries a short bar 51, which is provided with
a shoulder 52 and a latch 53. The rod 49 is surrounded by a spring 54, which
bears at one end against the swivel bearing 47, and at the other end against the
shoulder 52 of the bar 51.
The latch end 53 of the bar 51 normally rests on a small bell-crank 55, which
is pivoted on a bolt 56, which is supported on the bracket 34. A spring 57 bears
against one of the arms of the bell-crank 55, and keeps the bell-crank normally
in an upright position.
The pinion 37, which has been heretofore described as carried on the shaft 26,
meshes with a gear 58 on a shaft 59, which is suitably mounted in the frame of
the machine, and which may extend through the machine from side to side, in
case it is desired to duplicate the lifting mechanism to be hereafter described.
The gear wheel 58 carries an angular cam projection 74, which cooperates with
the extension or nose 36 of the lever 33, to disengage the parts of the clutch, as
will be hereinafter described.
The gears, clutch, and clutch-operating lever, which have been described, form
an efficient means by which the mechanism for moving the inking rollers, which
will be hereafter described, is connected to and disconnected from the stopping
mechanism, so that the moving mechanism may be automatically operated from
the stopping mechanism. Various other forms and kinds of connections may,
however, be used.
The cylinder B has been before described as mounted on a shaft 13, which is
supported in boxes. This shaft 13 supports the lever s, which is substantially
the same in construction as that described in connection with the construction
illustrated in Figures 10 to 17. It is provided with the segment rack 75, which,
in this construction, meshes with the gear 58 before referred to. The lever is also
provided with the series of cam faces or inclines 11, the whole forming a simple
and effective means for moving the inking rollers away from the path of the
form. Other mechanism might, however, be used for this purpose.
The form rollers R2 may be mounted in any convenient way, so as to be moved
by the mechanism before described. Preferably, however, said rollers are carried,
as in the modification before referred to, by a series of slides R,
these slides being suitably supported and guided in the frame of the
machine. The slides R are preferably provided with pins r, which,
when the form rollers are in operative position, come opposite depressions between
the cam faces 111, and thus allow the form rollers to come in contact with the
forms. When, however, the machine is not running, these pins r are engaged
by the cam faces sill, and the form rollers are lifted clear of the form, as will be
hereinafter described.
The operation of this construction is as follows:-So long as the belt 46 is on
the fast pulley 17, the impression cylinder will be operated through the shaft 2,
and there will be no operation of the mechanism which has been heretofore
described.
When, however, the belt-shifting lever is operated to shift the belt from the
fast to the loose pulley, the rod 49 is caused to move the bar 51 forward. This
causes the shoulder 52 to engage the projection 35 on the lever 33, and throws
the said lever. causing the clutch member 28 to engage the clutch member 38,
and locking the loose gear 37 to the shaft 26. The spring 54 permits a yielding
action between the clutch lever and the rod 49. and thus prevents any jamining
or breaking of the parts, in case the teeth of the clutch do not come accurately
into mesh as soon as the rod is thrown. As soon as the bar 51 has been advanced,
its latch portion 53 drops behind the bell-crank 56, and thus releases the pro-
jection 51 from the shoulder 52.

page_text: In the meantime, the belt having passed fairly onto the loose pulley 16, turns
the same, and causes the gear 19 to rotate the intermediate 22 and the gear 27.
The gear 27, in its turn, operates the shaft 26, and the gear 37, having been
locked to the shaft by the engagement of the clutch members 28 and 38, turns
with the shaft. The gear 37 operates the gear 58, which in its turn, by reason
of its engagement with the segment rack 75, rocks the lever s, and causes the cam
faces to engage the pins on the slides R. The engagement of the cam
faces with the pins r operates the slides in which the inking rollers are
mounted, and raises them clear of the form.
By the time the gear 58 has rotated sufficiently far to operate the lever s and
raise the slides, the cam projection 74 which is carried by the gear, is brought into
engagement with the bent nose 36 of the lever 33, and rocks the said lever back-
ward, thus disengaging the parts of the clutch 28, 38. The disengagement of
the parts of the clutch releases the gear 37, and no further movement of this
gear, or the parts operated by it, takes place. The shaft 59 is provided with a
suitable handle, and when it is desired to drop the form rollers into their inking
position, the shaft 59 may be rocked by the pressman by means of this handle.
This returns the gear 58 to the position it occupied before it was operated by the
gear 37, restores the cam faces 11 to their original position, and permits the
slides carrying the form rollers to move downward, thus bringing the said rollers
again into inking position.
When the pressman operates the belt shifter, to shift the belt from the loose
to the fast pulley, the rod 49 is drawn backward. This rocks the bell-crank 55
sufficiently to allow the latch 53 to become disengaged from the bell-crank, and
as soon as this happens, the spring 57 returns the bell-crank to its normal position.
The parts are now ready to be again operated, to automatically raise the form
rollers when the machine is stopped.
In the machine shown, the rollers are lifted at one end only, sufficient move-
ment being given them to cause them to clear the forms. Should it be desired
to lift them at both ends, and in actual practice this will usually be required,
it is only necessary to provide a set of slides for the opposite ends of the rollers,
and mount a second lever s on the opposite end of the impression cylinder shaft.
The shaft 59 will carry two gears 58, one on each side of the machine, there
being also two segment racks 75. This modification is an obvious one and is
not, therefore, illustrated.
While the mechanism which has been heretofore described is an effective means
for carrying this branch of the invention into effect, it may be widely varied.
Nor is this part of the invention confined to a rotary printing machine, nor to any
particular style of printing machine, nor to the particular means for carrying it
into effect.
18
In printing machines in which a plurality of couples is employed, it has been
usual heretofore, either to have both sides of couples rotate constantly, or to have
both members of both couples come to a stop when a sheet is fed to
the first couple. The first form of machine referred to, namely,
that in which both members of both couples rotate constantly,
open to the objection that the sheets
are presented to the sheet-
receiving cylinder of the first couple when said cylinder is in motion, and,
therefore, there is great liability of inaccurate feeding. In the second form of
machine. namely, that in which both couples come to a stop when the sheet is
fed to the sheet-receiving cylinder of the first couple, the danger of improper
feeding is avoided, but there is a great waste of power in stopping and starting
the two heavy printing couples.
This part of the invention has for its object to produce a machine in which two
. couples are employed to print on the sheet, and in which the impression member
of the first couple has its speed varied either by slowing down its movement, or
bringing it to a full stop, in order that the sheet may be fed thereto, and to do

page_text: this without stopping the movement by which the other couple effects the printing
operations.
This part of the invention, therefore, includes the provision of means by
which the impression cylinder of a printing press employing two printing couples
printing on a sheet, the sheet being fed to said impression cylinder, has its
speed varied in order that the sheet may be fed thereto, the mechanism used being
preferably such that the impression cylinder will be driven at full speed during
the printing operation, will be slowed down or brought to a stop while the sheet
is being fed thereto, and then will be again driven at full speed, to print and
deliver the sheet to the cooperating printing couple.
This part of the invention also includes mechanism for gradually accelerating
the speed of the sheet-receiving cylinder, after the sheet has been fed thereto,
until it is brought up to the speed of its cooperating printing member, after which
the two members are driven in. unison until the sheet is printed. After the
printing of a sheet, the mechanism then acts to slow down the cylinder, in order
that it may receive a fresh sheet, the printed sheet having been in the meanwhile
delivered to the second couple.
This part of the invention is best shewn in Figures 21 to 24, inclusive. It will
be observed that the particular mechanism shown for giving the movements to the
sheet-receiving impression cylinder before referred to, consists of the cam operated
levers before described. It is, however, obvious that other means than these
cam-operated levers might be employed for giving the necessary movements to the
sheet-receiving impression cylinder, and it is to be understood, therefore, that this
part of the invention is not limited to any special form of mechanism for per-
forming this function, nor to a mechanism for giving motion to the receiving
impression cylinder which connects the receiving impression cylinder with the
form cylinder.
Referring to Figures 21 to 24, A is the frame of the press, 50 the feed board,
C the receiving impression cylinder, and B a plate or form cylinder. The plate
cylinder shaft is provided at one end with the gear wheel 12, which in this form
of machine meshes with a pinion 77 on the driving shaft. On each end of the
plate cylinder is the toothed segment 30, which gears, during the time in which
the sheet is being printed, with the corresponding segment 31 on the cylinder C.
While the sheet is being fed thereto, the sheet-receiving impression cylinder C
stands in the position shown in Figure 21, being locked therein by a cam-actuated
stop lever of ordinary construction. This cam-actuated stop lever, while differing
somewhat in details, operates in substantially the same manner as the stop lever
which has been heretofore described in connection with Figure 1.
The form-carrying cylinder is, as has been stated, preferably provided with two
coupling levers 20 and 21, which are pivoted thereto, each of these levers being
controlled in the manner herein before described by the path cam 60. The sheet-
receiving cylinder C carries the two studs 8 and 9. The operation of the starting
and stopping levers upon these studs is precisely the same as that described in
the foregoing part of this specification, and there is, therefore, no necessity for
a further description of the same.
In order to assist in bringing the receiving impression cylinder to a stop, it is
provided with a brake wheel 61, mounted on its shaft which is surrounded by a
brake strap 62, said strap being controlled by a cam-operated lever 63. This cam
lever is operated through a rod 78, which in turn is operated from a cam on an
auxiliary cam-shaft 79
In order to perfect the sheet, a second plate or form cylinder 80 is provided,
and a second impression cylinder 81, which latter is geared to the plate cylinder 80,
and revolves continuously. This second impression cylinder receives the sheet
from the first impression cylinder, and, in cooperation with plate cylinder 80,
causes it to be printed on its second side. It is then stripped from the impression
cylinder, and carried off by the delivery tapes 82 to the fly 83. To prevent contact
between the impression cylinder 81 and the ink plates on cylinder 80, the

page_text: cylinder 81 is mounted on vertically-sliding-journal boxes. The journal boxes are
raised by means of springs 84, which act against collars 85 on sliding rods 86,
which pass through the journal boxes. The boxes are lowered by means of toggle
levers 87, the lower levers of each pair being mounted on a rock shaft 88. This
rock shaft is actuated by means of an arm 89, this being connected to a rod 90,
which extends down to, and is actuated by, a cam located on the auxiliary shaft 9.1.
The mechanism just described is a common form of throw-off mechanism, and is
effective for the purpose, but the cylinder may be controlled by any other suitable
or well-known form of throw-off mechanism. The cylinder 81 is thus lifted
to clear the ink plates, and to bring the grippers thereon into position to take
the sheet from cylinder C.
Instead of raising and lowering the cylinder 81 by means of a throw-off
mechanism, this cylinder may be mounted in fixed bearings. In this case, the
ink plates on the cylinder 80 will be so mounted as to be nearer the axis of the
cylinder than the form-carrying surface, and means will be provided for moving
the form rollers to and away from said plates as the cylinder revolves. It is,
of course, obvious how the ink plates may be mounted, and the mechanism for
controlling the form rollers may be similar in construction to that shown in
Figures 38 and 39. Again, when the cylinder 81 is mounted in fixed bearings,
the ink distributing plates on the cylinder 80 may, if desired, be omitted, in which
case the ink will be delivered directly from the ink distributing cylinder to the
form rollers. This modification being obvious, it is not illustrated.
The mechanism which has been described is intended to deliver two impressions,
one on each side of a sheet. It may, however, be desired to construct the machine
so that the two impressions will be delivered upon the same side of the sheet, and
in different colors, if so desired.
When it is desired to so arrange the machine that it will deliver two impressions
on the same side of the sheet, the construction will preferably be that shown in
Figures 25 and 26. The construction of printing couples shewn in these figures,
and the means for operating them, are substantially the same as that shown in
Figures 21 to 24. A transfer cylinder 92 is, however, preferably arranged between
the two impression cylinders C and 81, though other devices might be used, the
office of the transfer cylinder being to take the sheet by means of the usual grippers
from the grippers on the cylinder C, and transfer it the same side out to the
cylinder 81, after which it receives its second impression in the usual manner.
general construction of the machine shown in Figures 25 and 26 differs in certain
minor details from that shown in Figures 21 to 24. Thus, for instance, a delivery
cylinder 93 of ordinary construction is provided, which takes the sheet from the
cylinder 82 and delivers it to the delivery tapes.
The
In the modifications of the invention herein before described, the sheet has been
delivered directly from the feed-board to one of the impression cylinders, and
means have been provided by which said cylinders were caused to rotate in unison
with the form-carrying members of the machine during the printing operation,
and after that were slowed down and brought to a stop to receive the sheet. After
the sheet has been fed thereto, the sheet-receiving impression cylinder is started,
and moved with a constantly accelerating speed, until it is again brought up to the
speed of the form carrying member, after which they again run in unison, and
the printing is accomplished. In some cases, and particularly in cases employing
a plurality of printing couples, it is desirable to construct the machine so that
both members of the several printing couples will rotate continuously. In such
constructions, it is desirable to provide an additional feeding member, which shall
operate to receive the sheet from the feed-board or other source of supply, and
transfer it to one of the impression cylinders of one of the couples. This part of
the invention relates to the construction of such machines. The machines embody-
ing it are preferably, though not necessarily, provided with a plurality of printing
couples, both members of which rotate continuously, and there is provided a
feeding cylinder which receives the sheet from the feed-board, and transfers it

page_text: to one of the impression cylinders of the several couples. This sheet-feeding
cylinder has its speed varied in order that the sheet may be fed thereto, preferably
by bringing it to a stop. Preferably, also, the mechanism for controlling this
sheet-receiving cylinder will be similar to that which has been described for con-
trolling the sheet-receiving cylinders in the modifications of the invention herein-
before referred to, that is to say, one of the form cylinders will carry cam-actuated
levers which, through suitable connections, will start and stop the sheet-receiving
cylinder, said cylinder being maintained in motion by suitable gearing. It is to be
understood, however, that the invention is not limited to this mechanism for
starting and stopping the sheet-receiving feeding cylinder, but many other forms
of mechanism may he employed for this purpose, and these mechanisms may be
entirely independent of the form carrying cylinder.
One form of a machine embodying this part of the invention is illustrated in
Figures 27 to 30, inclusive.
Referring to said drawings, A is, as before, the frame of the machine, provided
with the usual feed-board 50, or other source of sheet supply. C indicates the
impression cylinder of the first couple to print upon the sheet, and B indicates
its cooperating form cylinder. The second form and impression cylinders are
lettered 80 and 81 respectively. The sheets are fed to the impression cylinder C
by a sheet-feeding member, which is preferably in the form of an ordinary sheet-
feeding cylinder 94. Loosely mounted on the shaft of the impression cylinder, is
a gear wheel 95, which meshes with a gear upon the end of receiving cylinder 94.
This gear also meshes with a segment 96 on the form cylinder B. The gear' 95
is provided with two sets of studs or rollers 97, 97, and 98, 98, with which engage
the coupling levers 20, 21, which are, as in the other modifications, pivoted to the
end of one of the cylinders, said levers being controlled, as before described, by the
path cam 60. This mechanism differs from that before described, in the fact that
the segment 96 is shorter, and the gear wheel 95 is provided with two sets of studs
or rollers 97, 97, and 98, 98, instead of one set, as is the case in the mechanism
before described, for the reason that as the receiving cylinder is given but one
revolution during each revolution of the form cylinder, and consequently, as the
gear 95 (in the form of machine which has been selected for illustration) has double
the number of teeth that there are on the gear on the receiving cylinder, it is only
necessary to cause the gear 95 to make half a revolution, in order to cause the
receiving cylinder to make a complete revolution.
In order to stop the receiving cylinder accurately in its receiving position, and
hold it there firmly during the time it is intended to remain stationary, a stop
lever 99 is provided, engaging with a stop pin 100 on the receiving cylinder. The
lever 99 is operated by a cam 101 on the cam shaft 91 through a connecting rod 102,
which carries a fork provided with a stud and roller 103, which bears on the
cam 101. The roller is held against the cam by a spring 104, which bears against
à collar 105 on the rod, and also against a guide 106 on the frame through which
the rod passes.
The construction which has just been described is arranged to perfect sheets,
that is, to print upon both sides. It may, however, be desired to arrange the
construction so as to cause the machine to deliver its impressions on the same
side of the sheet, as, for instance, when it is desired to print a sheet in more than
one color. A. construction of machine similar to that just described, but which
is arranged to deliver both its impressions on the same side of the sheet, is illus-
trated in Figures 31 and 32.
The construction shewn in these figures is the same in all substantial respects
as that which has just been described, except that a transfer cylinder 107 is located
between the two impression cylinders. The function of this transfer cylinder
is to take the sheet, after it has been printed from the first impression cylinder,
and deliver its printed side out to the second impression cylinder.
The machine shown in Figure 31 and 32 is also provided with an ordinary form
of delivery cylinder. Inasmuch as the operation of this machine is precisely the

page_text: same as that described in the preceding construction, with the exception of the
transfer cylinder, a detailed description of it is believed to be unnecessary.
The construction illustrated in Figures 33 to 40, inclusive, shows a multicolor
machine adapted to print in two colors, in which both the forms are mounted on a
single rotating carrier, which is preferably, though not necessarily, continuously
rotating. The machine is provided with a plurality of impression members, which
are preferably cylinders, and also with means for varying the speed, preferably by
stopping and starting, of that impression member which receives the sheet in the
first instance, so that the sheet may be fed thereto. Suitable means, preferably
a transfer cylinder, is provided for transferring the sheet, after printing, from
one impression cylinder to the other..
Referring to Figures 33 to 40, the form-carrying cylinder may be rotated in
any convenient or desirable way. In the machine shown, a shaft 205 is mounted
in the frame, said shaft being driven by suitable fast and loose pulleys 206, 207,
from any suitable source of power. The shaft 205 is provided with a pinion 208,
which meshes with a large gear 209, mounted on the shaft 203 of the impression
cylinder.
In the machine shown, the form-carrying cylinder is provided with two form-
carrying surfaces 210, 211. The invention is not, however, limited to this par-
ticular number of form-carrying surfaces, as more might be used, if desired.
These surfaces may be provided with any suitable printing form, as, for instance,
an aluminum sheet, or a stereotype plate.
In the machine shown, there are two impression cylinders, C, 81, which
cooperate with the form surfaces on the form carrier before described, the
cylinder C being arranged to cooperate with the form-carrying surface 210, and
the cylinder 81 being arranged to cooperate with the form-carrying surface 211.
These cylinders C and 81 are carried by the shafts 214, 215, suitably mounted in
journal boxes located in the upper part of the frame.
After the sheets have been printed, therefore, by the form surface 210 on the
cylinder 204, cöoperating with the impression surface of the cylinder C, it is
necessary that they be transferred with the printed side out, so as to receive a
second impression on the same side from the form surface 211, cöoperating with
the cylinder 81.
The transfer of the sheet may be effected in various ways. In the machine
shewn, the transfer is effected by means of a transfer cylinder 216, located between
the cylinders C and 81,-this cylinder being carried on a shaft 217, suitably
mounted in the frame of the machine.
The transfer and impression cylinders may be driven in any suitable manner.
In the machine shewn, the cylinders 81 and 216 are provided with intermeshing
gears 218, 219, and the gear 218 meshes with the gear 209 before described as
mounted on the shaft 203 of the "form" cylinder. The cylinders 81, 216 will,
therefore, be continuously driven, and, in the machine shown, the gears by which
these cylinders are driven are so related that the cylinder 81 makes three revolutions
for one revolution of the form carrying cylinder 204 and the cylinder 216 makes
four revolutions during one revolution of the form carrying cylinder.
The cylinder C has its speed varied in order that the sheets may be fed thereto,
and is preferably stopped for that purpose, the sheets being fed in any suitable
way, as from a feed-board 50, suitably mounted on the frame of the machine.
The cylinder C may be stopped, started, and driven, by any suitable form of
mechanism. Preferably, however, this cylinder will be controlled by means of
the cam-operated levers which have been described in the foregoing part of this
specification, their hooks being controlled by the path cam 60.
The stopping of the cylinder C may be assisted, and the cylinder may be held
in stationary position, by any suitable form of brake and locking mechanisms.
The mechanisms shown for this purpose are similar in all essential respects to
those shown in Figure 21, and described in connection with that figure.
Any suitable form of inking mechanism may be used to supply ink to the forms

page_text: on the surfaces 210 and 211. In the machine shown, two groups of inking
rollers 239, 240, are used, the group 239 cöoperating with the surface 210, and the
group 240 cooperating with the surface 211. As the machine shown is a multi-
color printing machine, it will be understood, of course, that the inking
mechanisms before referred to supply different colored inks to the forms. Means,
therefore, must be provided to keep each group of inking rollers out of contact
with the form which is intended to be inked by the other group. Various means,
widely different in character, may be used for keeping the inking rollers out of
contact with the forms which they are not intended to ink. In the machine
shown, the inking rollers of the two groups are shown as mounted in sliding
brackets 241. The brackets 241 are slidably held to the frame by pins 242,
which engage with diagonal slots 243 in the said brackets. The brackets 241 are
arranged in pairs, & the diagonal slots before referred to are so arranged that the
slots of each pair of brackets are at an angle to each other. The sliding brackets
are held down in their inking position by springs 244, and they are moved away
from this position by cam-lifting slides 245. Each of these lifting slides are pro-
vided with two cam faces, and operates to move a pair of the ink-roll supporting
slides, as will be readily understood from the drawings, more particularly Figure 39.
Sets of slides, such as have been before described, are located at each end of the
inking rolls, and the shaft 203 of the cylinder 204 is provided, at each end, with
a pair of cams 246, 247, by which the lifting slides of each group of rollers are
operated, the slides 245 being suitably provided with friction rolls, which run
upon said cams. The cam 246 operates in connection with the group of, inking
rolls 240, and holds them out of contact with the printing surface 210. In the
same way the cam 247 operates in connection with the group of inking rolls 239,
and holds them out of contact with the surface 211.
The second impression cylinder 8.1 is arranged so that it will not contact with
the form 210. Various constructions may be devised for this purpose. In the
machine shown, the said cylinder is controlled so that it will not contact with the
form surface 210, but will contact with the form surface 211, by means of lifting
mechanism of the ordinary form, which need not be herein specifically described.
The operation of the machine is as follows:-
A sheet having been fed down the feed board 50, is taken by the grippers on the
cylinder C, the cylinder being stationary at the time that the sheet is fed thereto,
being held in its stationary position by the locking lever. The rotation of the
cylinder 204 brings the starting lever 20 into position to engage the starting stud
on the cylinder C. The position of the parts just described is shown in Figure 33.
Just as the lever engages the stud, the cam operates to release the locking lever,
and the further movement of the cylinder 204 causes the starting lever 20,
coperating with the stud, to impart to the cylinder Can easy starting movement
which is gradually accelerated, until the speed of the cylinder C is the same as
that of the cylinder 204. At this time, the mutilated gear 228 of the cylinder 204
engages the gear 227 on the cylinder C. When the gears 228 and 227 come into
engagement. and the two cylinders are moving at the same speed, the form
surface 210 will meet the impression surface of the cylinder C, and the sheet upon
said surface will receive an impression from the said form surface.
The mutilated gear 228 is of such a length as to cause the impression cylinder C
to make two revolutions, the first being made in order to print the sheet, and the
second in order that the sheet may be delivered to the transfer cylinder 216. In
the position of the parts shown in Fig. 36, the impression cylinder C is trans-
ferring its printed sheet to the cylinder 216. In effecting the transfer, the
eylinder C will continue its revolutions until it reaches the position of the parts
shown in Fig. 37. At this time, the said cylinder has completed its revolution,
and its other pin has been engaged by the stopping lever 21. whereby the cylinder
is brought to a stop, and released by said lever. At this time the form-carrying
cylinder 204 has made about two-thirds of a revolution. It will be understood,
therefore, that during one part of a revolution of the form-carrying cylinder,

page_text: the impression cylinder C makes two revolutions, and then remains stationary
while the form-carrying cylinder completes its revolution.
After the transfer cylinder 216 has taken the sheet from the cylinder C, it
makes four revolutions, carrying the sheet, and, on its fourth revolution, the
timing of the parts is such that it delivers its sheet to the second impression
cylinder 81, and takes a fresh sheet from the first impression cylinder C, the first
sheet being of course transferred to the second impression cylinder, with its printed
side out. It will be remembered that, in the machine shown, the second impres-
sion cylinder, as well as the transfer cylinder, is a continuously rotating cylinder.
After receiving its sheet, therefore, this cylinder makes an idle revolution, and
then makes a revolution during which the sheet is printed and delivered. Its
third revolution (it being remembered that it makes three revolutions to one
revolution of the cylinder 204) is an idle revolution, and on its next revolution
it receives a sheet, and operates it as before described. The lifting mechanism is
preferably so arranged that the cylinder will be held up away from the path
of the forms on the cylinder 204, except during the passage of the form with
which it cooperates in the printing operation.
Various modifications may be made in the mechanism by which this part of the
invention is carried into effect.
That branch of the invention which is illustrated in Figures 41 to 64, inclusive,
relates more particularly to certain improved devices for holding flexible printing
plates in printing position. Inasmuch as such Hexible printing plates àre
ordinarily mounted on rotary carriers, this branch of the invention has been
lustrated in connection with cylinders. It will be understood, however, that some
of the devices which are embodied in this branch of the invention may be used
in connection with sheet carriers which are not rotating cylinders, and they are
also applicable to other purposes than that of holding printing plates. They
might, for instance, be used to hold blankets in position in printing machines.
The particular object of this part of the invention is to provide devices which
may be used in very narrow openings in the cylinders, whereby a very large pro-
portion of the surface of the cylinder may be used for plate-carrying purposes.
A further object of this part of the invention, is to produce devices which may
be manipulated to strain certain parts of the plate independently of other parts,
so as to obviate any buckling or unevenness in the plate, for it sometimes happens
that certain parts of the plate need to be placed under greater tension than others,
in order to cause to plate to lie smoothly upon its surface.
In the construction illustrated in Figures 41 to 48, inclusive, B indicates a
portion of a sheet carrier, which is, as has been before indicated, a form cylinder.
The cylinder is provided with the pair of side plates 300, one of these plates being
shown in elevation in Figure 41, and in section of Figure 42. These side plates are
secured to the cylinder by bolts, or in any other suitable way. The cylinder is
provided with the usual gap in which the plate-holding devices are located, and
supported beneath this gap is a shaft 301, this shaft finding its bearings on the
side plates 300. The shaft 301 carries the holding devices to be hereinafter
described, such devices being made adjustable around the shaft. The holding
devices may be of various kinds, and various means may be provided for adjusting
them. They will, however, preferably consist of holding jaws, and will be arranged
and adjusted as hereafter described.
Located on the shaft 301 are a series of jaws 303, which are provided with curved
extensions, which partially embrace the shaft 301, and also preferably carry per-
forated lugs or eyes 304. The shaft 301 is preferably provided with a series of
lugs 305, which are in vertical alignment with the lugs 304, and are preferably
threaded. Passing through the perforations in the lugs 304, and engaging the
threaded portions in the lugs 305, are bolts 306. The perforations in the lugs 304
are larger than the diameter of the bolts, and it will be seen that as the bolts
are screwed in or out, the jaws 303 will be given an angular adjustment around
the shaft.

page_text: In order to hold the sheet of material S, there is provided a cooperating holding
means, such as the jaws 307. These jaws may be supported, so as to cooperate
with the jaws 303 in various ways. They are shown in one modification, namely,
that illustrated in Figures 41 to 45, as pivoted to the jaws 303 by a hinged joint,
while in the modification illustrated in Figures 46 to 48, they are shown as
carried on the jaws 303, being secured thereto by an ordinary threaded bolt.
Other methods of mounting these jaws may be used, some of which are herein-
after described, it being only necessary to so arrange them that they will cooperate.
with the jaws 303 in holding the sheet of material, and, at the same time, permit
the said jaws to be adjusted with respect to the support.
Various means may be provided for rotating the shaft 301 in its bearings, and
thus adjusting the jaws, or series of jaws, mounted thereon. A simple and effective
means is that shown in which the shaft is provided with a squared head 302, and
a ratchet wheel 308. The plate 300 carries a spring holding pawl 309, which
co-operates with the said ratchet wheel, and prevents backward rotation thereof.
The operation of the modification so far described is as follows:-The edge of
the sheet of material having been inserted between the jaws 303 and 307. the bolts
which connect the two jaws are screwed down, so that the sheet is firmly clamped
between the jaws. The bolts 306 are then turned by a suitable wrench, to adjust
the various sets of jaws along the shaft away from the shoulder of the gap, in
order to produce an even tension on all parts of the sheet of material. It some-
times happens, especially where the device is used to hold and strain metallic
printing plates to their seats on the cylinder, that certain parts of the plate,
because of buckling, or for some reason, need a greater tension than other parts
of the plate. When this is the case, certain of the jaws will be given a greater
angular adjustment than the others. When the several sets of holding devices
have been suitably adjusted, a wrench is placed on the squared end 302 of the
shaft, and the shaft is revolved in its bearings, so as to simultaneously move all
the sets of holding devices away from the shoulder of the gap, thus straining the
plate to its seat. The holding pawl 309, cooperating with the ratchet 308, will
prevent any backward movement of the shaft 301, and the plate will thus be
securely held in position.
The opposite edge of the plate may be held in various ways.
It is here shown
as held by a set of clamping arms 310, mounted on a shaft 311, which is parallel
to the shaft 301. The shaft 311 is provided with an arm 312, to which is con-
nected a hook or eye 313. This hook 313 is connected to a spring 315, the other
end of the spring being connected to a block 314, carried on the cylinder. The
spring 315 draws the arm 312 toward the block 314, thus holding the arms 310
against the shoulder of the gap, and clamping the plate in position. The arms 310
are perforated, and engage pins 316, which are secured in the edge of the cylinder.
The sheet or plate is provided with perforations which are placed over the pins.
In the construction shown in Figures 46, 47, and 48, a device embodying this
part of the invention is shown as holding a sheet of cardboard, which acts as
a backing on an impression cylinder, the edges of the cardboard being clamped
between the jaws 303 and 307. The jaws shown in this modification are different
in shape to those shown in the other modification, but the action of the device, as
a whole, is the same. In this modification, the impression cylinder is further
provided with a shaft 17, provided with a ratchet wheel 318. upon which the
muslin or other material forming the blanket is wound and held. Co-operating
with the ratchet wheel 318, is a spring pawl 319, of the usual construction, the
same being used to prevent any backward rotation of the shaft. The impression
cylinder, in this case, is shown as provided with the usual sheet-taking and holding
grippers, and the means for manipulating the same. These grippers and their
co-operating devices, being of common and well-known construction; are not.
specifically described.
The modifications illustrated in Figures 49 to 54, inclusive, are generally

page_text: similar in construction and operation to those which have just been described.
In these modifications, however, the shaft 301 is preferably provided with a series
of abutments, which are stationary with respect thereto. These abutments are
preferably in the form of collars 411, which are secured to the shaft by means
of keys 412, and having projecting ribs 413.
The gripping devices (as in the modifications of this part of the invention before
described), of which there are preferably a series, and which may be of any suit-
able form, preferably consist of pairs of jaws, which are mounted on the shaft 301.
The lower jaw 303 of the gripping devices, in this modification, is provided with
a pair of collars 415, which may be located at each end of the jaw, and which
loosely embrace the shaft. These jaws have downwardly projecting portions 416,
which lie in front of the ribs 413 of the abutments 411, said projections being pro-
vided with threaded apertures. 416, for a purpose to be hereinafter described.
The collars 415 have thickened portions 417, which are also provided with threaded
apertures 4171.
In this form of the construction. the jaw which co-operates with the jaw 303
consists of a plate 307. This plate rests against the side of the jaw 303, and has
an overhanging portion 3071, which forms the upper jaw. The plate is provided
with projecting portions 419, having suitable apertures therethrough. Located
in the threaded apertures 4171 before referred to, are apertured projections which
preferably take the form of threaded screw-eyes 420. The threaded screw-eyes
pass through apertures 421 in the plate 307, these apertures being sufficiently
large to allow the plate.307 to have a slight vertical movement.
The jaws are drawn together by means of screws 422, which pass through the
aperture in the projection 419, and engage the threaded aperture in the projection
420, these screws having squared heads, to enable them to be engaged by
a suitable wrench introduced through the gap in the cylinder. It is apparent
that, by turning the screws 422, the jaw 307 will be caused to move downward
with respect to the jaw 303, and that the plate S, or other sheet of material to be
held, will be clamped between the jaws. Screws 423 are preferably provided for
securely locking the jaws in their adjusted position, these screws passing through
suitable apertures in the plate 307.
These screws 423, in connection with, the screw eyes 420, also serve to guide
the plate 307 in its movement.
Means are provided as in the previous modifications, for forcing the jaws away
from the shoulder of the sheet-supporting surface. In this modification the
means act to force the jaws away from the abutment in front of which they are
located, and these means may be of various kinds. Preferably, however, they
will consist of screws 424, which pass through the jaw plate 307, engage the
threaded aperture 4.16 in the jaw 303, and bear against the rib 413 of the abut-
ment 411.
It being remembered that there are a series of clamping devices mounted on the
shaft 301, the operation of the straining and holding mechanism, as a whole, will
be obvious. The edge of the sheet is introduced between the jaws 3071 and 303.
The said jaws will then be forced together by means of the screws 422, and when
the plate has been securely clamped, the screws 423 are adjusted to hold the jaws
in position The screws 424 are then turned by any suitable means, and each
pair of jaws is thus adjusted away from the stationary abutment, the loose
engagement of the collars 415 with the shaft 301 permitting the jaws to turn about
the axis of the shaft. By adjusting the screws 424 of each pair of jaws a greater
or less amount, the tension on the various parts of the plate can be varied as
desired. When the adjustment of the several jaws along the shaft has been
effected, the shaft is turned by a wrench. or other suitable means, thus carrying
the abutments and the jaws away from the edge of the plate-supporting surface
of the cylinder, and drawing the plate securely to its seat on the cylinder.
The other end of the plate may be held in any desired manner. It is here

page_text: shown as held by means of arms 425 mounted on a shaft 426, which is parallel
to the shaft 301, said shaft being kept in position to hold the arm against the
edge of the cylinder by any suitable means, as by a spring, not shown.
In the modification illustrated in Figures 53 and 54, the upper jaw, instead of
consisting of a plate, is formed from a block or casting 427, which has an off-set
portion thereon engaging an off-set portion on the jaw 303, the said jaw being
forced down on the lower jaw by screws. In other respects, this modification is
the same as that heretofore described, and the operation is the same.
In the modifications which have just been described, the upper jaw of the gripping
jaws has been the movable jaw, and it has been given a downward movement,
in order to seize and clamp the plate In the modification illustrated in Figures 55
to 57, inclusive, a construction is shown in which the under jaw is the movable
Jaw, and means are provided which are independent of the jaw, which cause it to
move upward with a right-line movement into its clamping position.
In this modification, the form cylinder or carrier B is provided with two shafts
or rods 510, 511, which preferably extend through it from side to side. Mounted
on these rods are a series of sleeves 512, which are provided with outwardly-pro-
jecting short arms or projections 513, said arms preferably having their upper
surfaces curved, as shown at 514.
Secured to the projecting arms 513 by means of bolts 515, or in any other suit-
able manner, are a series of jaw plates 516, which are formed to provide over-
hanging plate-holding jaws 517.
The jaws which cooperate with the jaws 517 may be formed and supported in
various ways; preferably, however, the jaw plates 516 are provided, near their
upper ends, with perforations 518 (see dotted lines in Figure 57), and through
these perforations. pass pins or bolts 519. The inner ends of said pins or bolts are
secured to jaws 520, which jaws cooperate with the jaws 517, to hold the plate.
It will be noticed that the perforations 518 are larger than the pins or bolts 519,
so that the jaw 520 is a loosely-mounted jaw, the size of the perforations being
such as to allow the necessary movement of this jaw away from the jaw 517, in
order to permit the insertion of the edge of the plate between the jaws, and toward
the jaw 517, in order that the plate may be clamped between the jaws.
Various devices may be used for forcing the under jaw 520 against the co-
operating jaw, in order to cause the plate to be properly gripped between the jaws.
Preferably, however, the under-side of the jaw 520 is slightly curved, as shown
at 521, in Figure 57, and between this curved under-face and the curved face 514
of the arm 513, is located a rocking block 522, which preferably has its edges
curved or rounded, as shown. This block is preferably secured to the plate 516
by means of a bolt 523, provided with a wing nut 524. It is obvious that, by
turning the wing-nut 524 in the proper direction, the block 522 will be forced
towards the jaw plate 516, and the block is of the proper width, so that, by this
movement, the jaw will be forced up against the jaw 517, the block having a kind
of wedge or toggle action. It will also be noted that the jaw 520 moves upward
in substantially a right line, under the action of the rocking block, There is
no tendency, therefore, for the jaw to slip on the plate, as the clamping is effected.
In order to force the rocking block 522 away from the plate 516, so as to permit
the jaws 520 and 517 to separate, and the plate to be disengaged therefrom,
springs 525 are preferably provided, though other means might be used if desired.
These springs may be arranged in any desired manner; preferably, however, they
will surround the bolt 523, the plate 516 and the rocking block 522 being provided
with recesses to receive the ends of the spring.
After the jaws have been caused to grip the plate, it is necessary, as in the other
modifications, that they be forced away from the edge of the plate-supporting
surface, in order to strain the plate to its seat, and cause it to lie evenly and
smoothly on the surface of the cylinder. This result may be effected in several
A convenient means of effecting this result is, however, that shown. A
ways.

page_text: screw 526 provided with a lock-nut 527 engages a threaded hole in the plate 516,
and passing through a perforation in the rocking block 522, bears against the
edge of the plate-supporting surface.
It may sometimes happen (usually where the cylinder has a plurality of plate
supporting surfaces), that all the straining and holding devices will not be in
use, and in order to prevent pounding and rattling, means are preferably provided
to hold the jaws against the edge of the plate-supporting surface, when they are
not being utilized for holding a plate. In order to effect this result, the
sleeves 512 are preferably provided with arms 528, to which is connected a spring
529, the other end of the springs being secured in eyes 530, which are fast on the
cylinder. The springs 529 act in opposition to the bolts 526, and will act to hold
the device snugly against the edge or shoulder of the plate-supporting portion of
the carrier, and thus prevent any rattling, in case the carrier is revolved, when
some or all of the holding devices are not in use.
The sheet-carrier might be constructed to employ only a single set of jaws at
each end, in which case the rods 510 and 511 would be provided with a long
sleeve 512, the jaws 520 and 517 being made long enough to securely hold the
edges of the plate. The preferable construction, however. is that shown, in which
the rods 510 and 511 each carry a series of sleeves 512, since each of the series of
gripping jaws is thus made independently adjustable. If, therefore, certain por-
tions of the plate require greater straining action than other portions, this result
can be effected by adjustng the particular set of jaws which acts upon that portion
of the plate, independently of the other jaw.
While, too, the plate is shown in this modification as held at each ead by sets
of jaws of the peculiar construction herein before described, it is obvious that only
one set of such jaws may be used, the plate being held at the other end in any
desired manner.
In the modification illustrated in Figures 58 to 61, inclusive, a construction is
shown in which the form cylinder or sheet carrier itself is arranged to assist in the
clamping action. This is effected by bevelling or under-cutting a side of the gap
or opening in which the straining devices are located, and by so arranging the
straining devices, that the edge of the plate or sheet will be drawn down into
the opening over the sharp edge formed by the undercut. Referring to these
figures, Bis, as before, the form cylinder or sheet carrier, which, in this instance,
is constructed to carry two metallic printing plates. It will be understood that
in this and in the other modifications described, the cylinder may be arranged to
carry any number of printing plates which is thought desirable.
In this modification, the cylinder B is provided with two gaps or openings, in
which the plate holding and straining devices' are located. Each gap or opening
preferably has its two sides bevelled or undercut to form inclined faces 601, and
these inclined faces preferably terminate in straight faces 602. Only one side of
the opening need be formed, to provide these faces. Located beneath each of the
openings, are a pair of rods 603. 604, which are suitably supported in the cylinder.
Pivoted on these rods are a series of jaw plates, these plates preferably consisting
of a straight portion 605 and an inclined portion 606. The inclined portion of
the jaw plates is arranged so as to be substantially parallel to the undercut face
of the opening to which it is adjacent, when the jaw plate rests against said
undercut face, and the straight portion is substantially parallel to the straight face
of the opening. The upper or outer edges of the jaw plates are also formed to
provide jaw faces 610. these jaw faces being preferably, though not necessarily,
slightly inclined. The jaw plates are further provided with inclines 611, and it
will be noted that these inclines, and the jaw faces 610, form two sides of a salient
angle (see Figure 61). The straight and inclined portions are preferably formed
by arranging the two parts of the plate at an angle to each other.
Cooperating with the jaw plates before referred to, are jaw-plates 607. These
jaw-plates 607 are preferably carried on the inclined parts 606 of the other jaws,
being secured thereto by means of bolts 608, and are provided with jaw faces 612,

page_text: preferably, though not necessarily, slightly inclined, which cooperate with the jaw
faces 610, and inclines 613, which cooperate with the inclines 611. It will be
noted that the faces 612 and inclines 613 form two sides of a re-entrant angle.
The straight portion 605 of the jaws first referred to, have tapped openings therein,
and located in these openings are bolts 609, these bolts bearing against the straight
faces 602 of the opening before referred to. The operation of the device is obvious.
The edges of the plate or other sheet of material which it is desired to hold and
strain, are inserted between the jaws of each pair of jaw plates, and the plates 607
are forced inward by the bolts GOS. As the jaw plates 607 move inward, under
the action of the bolts 608, the inclines 611 and 613 cause the plates to move
downward, the inclines having a wedge or cam action, and the jaw face 612 is
thus forced downward toward the jaw face 610, clamping the plate firmly and
securely between the jaws. Each set of jaws is then adjusted by turning the
bolts 609, which cause the jaws to turn about the rods 603, 604, and draw the
plate to its seat.
By making the openings in the cylinder with bevelled or inclined sides, and con-
structing the jaw plates with an angle of inclination which corresponds to that of
the inclined sides, it will be seen that the opening in which the straining devices
are located can be made very narrow at the outer circumference of the cylinder,
thus having a large amount of plate-supporting surface, and, at the same time,
sufficient space is afforded in the opening itself to accommodate the holding and
straining jaws and the means for manipulating them.
By arranging the bolts 609 on the opposite sets of jaws in a slightly staggered
position, as shown in Figure 60, space may be still further economized, and yet the
bolts can be readily reached and adjusted by a suitable wrench or spanner.
It will be furthermore noted, that the movement of the said jaw plates on the
rods tend to draw the edge of the plate down into the opening, and across the sharp
edge formed by the bevelled or undercut side of the opening in the cylinder, thus
enabling the holding devices to more securely retain the plate in position.
The cylinder is shown as provided with two openings, and with sets of holding
devices in each opening, so that the plate is held at each end by the same devices.
It is obvious, however, that one of these sets of devices might be omitted, and
the plates held on the cylinder, at one edge, in any other suitable manner.
Various modifications of the device are possible. For instance, the straight
faces of the openings might be omitted, the inclined faces being continued clear
across the opening. So, too, instead of constructing the jaws, of the straight
portion 605 and the inclined portion 606, they might have a single inclined part
lying against the inclined face of the opening, in which case, of course, the
rods 60, 604, will be located somewhat further apart than they are illustrated
in the drawing.
In the modification illustrated in Figures 62 to 64, a construction is shown in
which two plates on a cylinder may be simultaneously adjusted. In this con-
struction, the cylinder B is provided with a gap between two of the adjacent ends
of the plate-holding surfaces, and is further provided with a pair of rods 701
and 702, extending through the cylinder fiom end to end, said rods being located
near the gap. The rod 701 carries a series of pivoted arms 703, and the rod 702
carries a series of pivoted arms 704, though in some cases a single wide arm may
be carried by each rod. The upper end of the arms 703 are formed to provide
holding jaws 705, and the upper ends of the arms 704 are formed to provide similar
jaws 706.
Cooperating with the jaws 705 and 706, are jaws 707 and 708, the jaws 705
and 707 acting to hold the edges of one plate and strain it to its seat, and the
jaws 706 and 708 performing a similar office for the other plate. These jaws may
be supported in any suitable or desired manner, but they are preferably secured
to the arms 703 and 704 by bolts 709 and 710, the edge of the plate being inserted
between the jaws, and clamped by screwing up the said bolts..
Various means may be used for simultaneously adjusting the arms 703 and 704

page_text: and the jaws carried by them. In the construction shown, the arms are provided
with recesses 11 and 712, these recesses being preferably circular. In these
recesses are located cylindrical pieces 713 and 714, which are free to turn in the
recesses, and are provided with threaded apertures.
Located between the arms, and engaging each threaded aperture in the cylin-
drical pieces 713, 714, is a reversely-threaded rod 715, having a central squared
mut thereon. It is obvious that, by turning the rod by means of a suitable wrench.
the arms and jaws can be adjusted towards and from each other, and if the edges
of a pair of plates be secured between each series of jaws, it will be strained to its
seat, or released, as may be desired.
The opposite ends of the plates may be held in any desired manner; preferably,
however, they will be held by the device illustrated in the drawings, which consists
of a dove-tailed block 716, which is located in a similarly shaped recess formed in
the cylinder. The block 716 has a recess 717 therein, and is provided with
shoulders 718, which are preferably bevelled, as shown. Located in the recess 7.17
is a block 719, which is provided with shoulders 720, which co-operate with the
bevelled shoulders 718 of the block 716. This block 716 may be held in place in
any suitable way, as by a screw 721, which passes through it, and into a threaded
recess in the block 716.
The operation of the device is obvious; the plates being placed upon the cylinder
with their edges held between the blocks 716 and 720, the opposite edges of the
plates are inserted between the jaws 706 and 708, and 707 and 709, being secured
therein by screwing up the bolts. A wrench is then placed on the squared central
projection of the reversely-threaded rod, 715, and the same is turned. This causes
the arms 702 and 703 to approach each other, and strains the plate to its base,
the cylindrical pieces 7.13 and 714 moving in their recesses sufficiently to permit
the arms to adjust themselves as they are drawn together, the openings in the
arms through which the threaded rod passes being slightly enlarged, to allow
this movement of the nuts, to adjust themselves,
Sets of arms similar to the arms 703 and 704 might, if desired, be substituted
for the blocks 716, 719, for holding the opposite ends of the plates. The cylinder
might also be provided with more than two sets of plates, if desired. So, too,
the construction of the arms which carry the jaws, and the means for opening
them may be widely varied.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed (as communicated
to me from abroad), I declare that what I claim is:-
-
1. In a printing machine, the combination of two members, means for inter-
mittently driving the members in unison, and means for varying the speed of
one of the members with relation to the other, said means consisting of engaging
surfaces having paths of movement corresponding to those of the menibers, and
one of said surfaces being inclined to its path of movement, and means for
giving one of the surfaces a movement independent of its driven movement,
substantially as described.
2. In a printing machine, the combination of two members, means for inter-
mittently driving the members in unison, means for varying the speed of one
member with relation to the other, said means consisting of engaging surfaces
having paths of movement corresponding to those of the members, one of the
surfaces being inclined to its path of movement, and means for varying the
inclination of said surface substantially as described.
3. In a printing machine, the combination with a pair of rotating members,
of two pairs of rotating engaging devices intermediate of the two members,
the engaging surface of one of the devices of each pair being inclined to its
path of movement, and means for giving one device of each pair a movement
independent of its rotating movement, substantially as described.
4. In a printing machine, the combination with a pair of rotating members,

page_text: of engaging devices having a path of movement corresponding to that of the
members, and intermittently operating to alternately gradually increase and
gradually reduce the speed of one member with respect to the speed of the other
member, and means for giving one of said devices a movement independent of
its rotating movement, substantially as described.
5. In a printing machine, the combination with a pair of rotating members,
of two pairs of rotating devices intermediate of the members, means for giving
one of the devices of each of the pairs a movement independent of its rotating
movement, by which it is caused to be engaged with, and disengaged from, its
cöoperating device, one pair of said devices operating to alternately gradually
increase, and the other pair to gradually reduce, the speed of one member with
respect to the speed of the other member, substantially as described.
6. In a printing press, the combination with a sheet-receiving cylinder of a
cylinder cooperating therewith, means for intermittently driving the cylinders
in unison, means for varying the speed of the sheet-receiving cylinder with
relation to the other cylinder, said means consisting of engaging surfaces having
a movement corresponding to that of the cylinders, and one of said surfaces
being inclined to its path of movement, and means, for giving said inclined
surface a movement independent of its rotating movement, whereby it is carried
into and out of engagement with its cooperating surface, substantially as
described.
7. In a printing machine, the combination with a sheet-receiving cylinder,
of a second cylinder cooperating therewith, rotating engaging devices inter-
mediate of the two cylinders, the engaging surface of one of the devices being
inclined to its path of movement, and means for varying the inclination of said
surface, substantially as described.
8. In a printing machine, the combination with a sheet-receiving cylinder,
of a cylinder cooperating therewith, a pair of rotating engaging devices inter-
mediate of the two cylinders, the engaging surface of one member of the pair
being inclined to its path of movement, and means for giving one of the
members a movement independent of its rotating movement, substantially as
described.
9. In a printing press, the combination with the impression cylinder, of a
rotary printing couple, said cylinder having sheet-receiving means, of a printing
member cooperating therewith, engaging surfaces moving with the members of
the couple for varying the movement of the impression cylinder with relation. to
the other member of the couple, and means for giving one of said surfaces a
movement independent of its rotary movement, substantially as described.
10. In a printing press, the combination with a rotating printing or form
cylinder, of an impression cylinder, means for driving the two cylinders in
unison during a part of their rotation; means, rotating with the cylinders, for
varying the rotation of the impression cylinder with relation to the form cylinder;
and means for giving said last-named means, a movement independent of its
rotating movement, substantially as described.
11. In a printing press, the combination of a continuously rotating plate or
form cylinder, an impression cylinder, means for rotating the impression cylinder
intermittently, so that it shall stop during each revolution of the form cylinder,
and mechanism mounted upon and rotating with the plate cylinder, and engaging
with the impression cylinder, for giving the impression cylinder a graduated
rotatory motion from its position of rest, to even motion with the form cylinder,
and again from even motion with the form cylinder, to a position of rest, sub-
stantially as described.
12. In a printing press, the combination of a continuously rotating plate or
form cylinder, an impression cylinder, means for rotating the impression cylinder
intermittently, so that it shall stop during each revolution of the form cylinder,
segmental gearing for connecting the two cylinders while the printing operation
is in progress, and mechanism mounted upon and rotating with the plate

page_text: cylinder, and engaging with the impression cylinder, for giving the impression
cylinder a graduated rotatory motion between its position of rest and its position
when geared to the form cylinder, and again between its latter position and its
position of rest, substantially as described.
13. In a printing machine, the combination of an impression cylinder, pro-
vided with a segmental gear, two studs or rolls, a larger cylinder provided with
a driving gear, and two pivoted cam-actuated coupling levers, whereby a
graduated motion is transmitted from the larger cylinder to the impression
cylinder, on starting the same, and bringing it to rest, substantially as described.
14. In a printing machine, the combination of an impression cylinder, two
studs or rolls carried thereby, a form cylinder of larger diameter than the
impression cylinder, provided with two pivoted cam-actuated coupling levers
adapted to successively co-act with said studs or rolls, and means for continuously
rotating said form cylinder, whereby the impression cylinder is engaged while
stationary, and started into rotation, and is engaged while running at speed,
and has its rotation retarded, to bring it to rest, substantially as described.
15. In a printing machine, combination with two cylinders, the first of which
is driven, of a stud or roll carried by the second cylinder, mechanism mounted
upon the first cylinder provided with a driving face for engaging with the stud
or roll, and thereby giving motion to the second cylinder, and means for chang-
ing the inclination of the driving face with reference to the stud or roll, whereby
a graduated motion is transmitted from the first cylinder to the second cylinder,
substantially as described.
16. In a printing machine, the combination with two cylinders, the first of
which is driven, of a stud or roll carried by the second cylinder, a coupling lever
pivoted upon the first cylinder provided with a driving face for engaging with
the stud or roll, and thereby giving motion to the second cylinder, and means
for moving the coupling lever on its pivot, to change the inclination of the
driving face with reference to the stud or roll, whereby a graduated motion is
transmitted from the first cylinder to the second cylinder, substantially as
described.
17. The combination with an impression cylinder, of two studs or rolls
carried thereby, a form cylinder of larger diameter than the impression cylinder,
two coupling levers pivoted to the form cylinder, and each provided with a
driving surface adapted to engage with one of the studs or rolls, and means
for moving the coupling levers on their pivots, to change the inclination of the
driving faces with reference to their respective studs or rolls, whereby graduated
motion is transmitted from the form cylinder to the impression cylinder, on
starting and stopping the impression cylinder, substantially as described.
18. In a printing machine, the combination with a sheet-receiving cylinder
and two studs or rolls carried thereby, of a larger cylinder provided with two
pivoted coupling levers adapted respectively to engage said studs or rolls, a cam
acting to vibrate said levers, means for continuously rotating said larger cylinder,
whereby said sheet-receiving cylinder is engaged, while stationary, by the larger
cylinder, caused thereby to rotate, is disconnected therefrom, retarded, and again
left stationary, and a brake mechanism whereby the stopping of said receiving
cylinder is aided, substantially as described.
19. In a printing machine, the combination with a sheet-receiving cylinder,
and two studs or rolls carried thereby, of a larger cylinder provided with two
pivoted cam-operated coupling levers adapted to successively co-act with said
studs or rolls, and means for continuously rotating said larger cylinder, whereby
the sheet-receiving cylinder is engaged while stationary and started into rotation,
and is engaged while running at speed, and has its rotation suspended to bring
it to a state of rest, substantially as described.
20. In a printing machine, the combination with a sheet-receiving cylinder,
having a segment and two studs or rolls carried thereby, of a larger cylinder
provided with a driving segment and two pivoted cam operating coupling levers

page_text: adapted to successively engage said studs or rolls, and means for continuously
rotating said larger cylinder, whereby the sheet-receiving cylinder is engaged
while stationary, and started into rotation, which is continued as the segments
intermesh, and said rotation is suspended as the segments run out of mesh, to
bring the receiving cylinder to a state of rest, substantially as described.
21. In a printing machine, the combination with a printing couple, of a
member intermittently rotated in unison with one member of the couple, con-
nections between said member and the other member of the couple, and means
for interrupting said connections at will, substantially as described.
22. In a printing machine, the combination with a rotating form-carrying
cylinder, of a rotating impression cylinder, a member intermittently rotating
in unison with the form cylinder, connections between said member and the
impression cylinder, and means whereby said connections may be interrupted
at will, substantially as described.
23. In a printing machine, the combination with a pair of rotating members,
of two pairs of engaging surfaces having paths of movement corresponding to
the paths of movement of the members, means for giving one of the surfaces of
each pair a movement independent of its rotating movement, a third member,
connections between it and one of the pair of members, and means for inter-
rupting said connections at will, substantially as described.
24. The combination with a printing couple, of a gear, means whereby said
gear has a variable movement imparted to it by one of the members of the
couple, connections between said gear and the other member of the couple, and
means for interrupting said connections at will, substantially as described.
25. The combination with a printing couple, of a gear, means whereby the
gear has its movement gradually increased until it runs in unison with one
member of the couple, and then gradually decreased until it is brought to a stop,
connections between said gear and the other member of the couple, and means
whereby said connections may be interrupted at will, substantially as described.
26. The combination with a constantly rotating form-carrying cylinder, of a
gear, means intermediate of the form cylinder and the gear, whereby the gear
has its movement constantly increased from a position of rest, until it runs in
unison with the form cylinder, and then gradually decreased until it is brought
to a stop, an impression cylinder, connections between the impression cylinder
and the gear, and means whereby said connections may be interrupted at will,
substantially as described.
27. In a printing machine, the combination with a form-carrying cylinder,
of a member intermittently rotated from the form-carrying cylinder, and when
not so rotated is at rest, means for maintaining the member in a position of
rest, an impression cylinder, connections between said member and the impres-
sion cylinder, and means for interrupting said connections at will, substantially
as described.
28. In a printing machine, the combination with a constantly rotating form
cylinder, of an impression cylinder, means whereby the impression cylinder is
given a graduated rotary motion from the form-cylinder, and brought to a
position of rest once during each revolution, a trip mechanism for interrupting
the driving connection between the two cylinders, and means for locking the
trip mechanism against operation, except when the impression cylinder is in
a position of rest, substantially as described.
29. In a printing machine, the combination with a constantly rotating form-
cylinder, of an impression cylinder, a gear, means intermediate of the gear and
the form-cylinder, whereby said cylinder imparts a variable movement to the
gear, connections between the gear and the impression cylinder, a trip for
interrupting said connections, and means for preventing the operation of the
trip, except at specified times, substantially as described.
30. In a printing machine, the combination with a constantly rotating form-
cylinder, of an impression cylinder, a member intermediate of the two cylinders,

page_text: devices whereby the member is intermittently rotated by the impression cylinder,
and, when not so rotated, is at rest; means for locking the member in its
position of rest; connections intermediate of the member and the impression
cylinder; a trip mechanism for interrupting said connections; means for
venting the operation of the trip mechanism, except at specified times; and
means for locking the impression cylinder when the trip mechanism has dis-
connected it from the member, substantially as described.
pre-
31. In a printing machine, the combination with a constantly rotating form-
cylinder, of an impression cylinder, means whereby the impression cylinder. is
driven from the form-cylinder, and brought to a position of rest once during
each revolution, a trip mechanism for interrupting the driving connections
between the form and impression cylinders, means for preventing the operation
of the trip mechanism, except at specified times, a locking mechanism for holding
the impression cylinder in a position of rest when tripped, and means for simul-
taneously operating the trip and the locking mechanisms, substantially as
described.
32. In a printing machine, the combination with a rotating form-carrier
and the shaft upon which it is mounted, of .an inking mechanism, supports in
which the inking mechanism is mounted, a cam mounted on the shaft of the
form carrier, and acting to move the supports, machine-stopping devices, and
means whereby the cam is automatically operated, to move the supports, and
lift the inking mechanism away from the path of the form, when the machine
is stopped, substantially as described.
33. In a printing machine, the combination with a rotating form-carrier,
and the shaft on which it is mounted, of an inking mechanism, supports on
which it is mounted, a rocking cam mounted on the shaft of the form-carrier,
an arm for rocking the cam, having a segmental rack thereon, a normally inopera-
tive gear meshing with the rack on the arm; means, including a clutch mechanism
for rendering the gear inoperative; machine-stopping devices; and connections,
including a clutch operating device between the machine stopping devices and
the gear, substantially as described.
34. In a printing machine, the combination with a form-carrier, of inking
mechanism therefor; normally-inactive means for moving the inking mechanism
away from the path of the form; machine-stopping devices; a train of gearing
between the stopping devices and the moving devices, one of said gears being
provided with a cam; a clutch in said train of gearing: a lever for operating
the clutch; means operated by the machine-stopping devices for causing the lever
to connect the two parts of the clutch, said clutch-operating lever having a
nose or extension lying in the path of the cam on the gear, whereby the cam
operates to disconnect the parts of the clutch after the moving devices have been
operated, substantially as described.
35. In a printing machine, the combination with a rotating form-carrier and
the shaft upon which it is mounted, of inking mechanism, a cam on the shaft
of the form carrier for moving the inking mechanism away from the form, an
arm carrying a segment for operating the cam, a shaft, normally stationary
gear on said shaft, machine-stopping devices, means whereby the gear is thrown
into operation by the machine-stopping devices, to cause the segment-carrying
arm to operate the cam, and a handle on the shaft of the gear for operating
the same and the segment-carrying arm, to restore the cam and inking mechanism
to their normal position, substantially as described.
36. In a printing machine, the combination with a rotating form-carrier, of
operating devices therefor, including a shaft carrying fast and loose pulleys, a
belt shifter, a train of gearing operated from the loose pulley, a clutch in said
train, an operating lever for shifting the clutch, a latch rod carried by the belt
shifter, for operating the lever, inking mechanism, a normally inactive cam for
moving the inking mechanism away from the path of the form, connections
from the cam to the train of gearing, whereby, when the belt shifter is operated,

page_text: the operating lever is caused to throw the clutch into engagement and operate.
the cam to move the inking devices, and means, carried by the gear train, for
throwing the clutch out of operation when the inking mechanism has been moved,
substantially as described.
cam
37. In a printing machine, the combination with a rotating bed carrying a
printing surface and a distributing surface, of a set of form rollers, a
rotating with the bed, devices intermediate of the cam and the form rollers,
and mounted independently of the roller shafts, whereby the cam is caused to
move the rollers out of contact with the form, and into contact with the
distributing surface, and means whereby said devices are rendered operative,
substantially as described.
38. In a printing machine, the combination with a rotating bed, of a series
of form-rollers, a cam rotating with the bed, devices intermediate of the cam
and the form-rollers, and mounted independently of the roller shafts, whereby
the cam is caused to raise the form rollers away from the path of the form, and
manually operated means whereby said devices are rendered operative, substan-
tially as described.
39. In a printing press, the combination of the form cylinder, with a suit-
able stand or frame movable with relation to the cylinder, form-inking rollers
carried in the stand or frame, a cam on the form cylinder, operating means
operated by said cam for moving the stand or frame toward and away from the
cylinder, and manually-operated controlling means for throwing the stand-
operating means into and out of action, substantially as described.
40. In a printing press, the combination of a form-cylinder, a vertically
movable stand or frame, comprising movable side frames sliding in guides on
the press-frame, the inking rollers carried in said vertically movable stand or
frame, rock-arms engaging the side frames of the vertically movable stand or
frame, for moving the same vertically, a cam on the form cylinder, and suitable
operating connections between said cam and rock-arms, substantially as
described:
.
41. In a printing machine. the combination with a rotating bed carrying
printing and distributing surfaces, of a set of form-rollers, a cam rotating with
the bed, devices intermediate of the cam and the form rollers, and mounted
independently of the roller shafts, whereby the cam may be caused to move the
form-rollers away from the path of the form and into contact with the distri-
buting surface during each rotation of the bed, and manually-operated means
whereby said devices are rendered operative, substantially as described.
42. In a printing machine, the combination with a rotating bed, of a slide
mounted in proximity thereto, a set of form-rollers mounted in the slide, a
cam mounted on the shaft of the bed, a movable support, also mounted on the
shaft, and a lever carried by the support, and operated by the cam, to raise the
slide when the support is in one position, said lever being inoperative in
another position of the support, substantially as described.
43. In a printing machine, the combination with a bed and means for operating
it, of a set of form rollers, a cam a movable support, means carried by the
support whereby the cam is caused to move the form-rollers toward and away
from the path of the form for each movement of the bed, and means, also
carried by the support, for holding the form rollers continuously away from
the path of the form, substantially as described.
44. In a printing machine, the combination with a rotating bed, of a set of
form-rollers acting in conjunction therewith, a cam mounted on the shaft of
the bed, a moving support, devices carried by the support, which. in one position
of the support, cause the cam to raise the form rollers away from the form
during each rotation of the bed, and means, also carried by the support, and
acting in another position of the support, to hold the form rollers continuously
away from the path of the form, substantially as described.
45. In a printing machine, the combination with a rotating form-carrying

page_text: cylinder, of a cam, a set of form rollers, a support means controlled by the
support, and operating in one position of the support to hold the form rollers
continuously away from the cylinder, and in another position of the support
to permit the form rollers to be continuously in contact with the cylinder:
devices carried by the support, and operating in connection with the cam, in
a third position of the support, to cause the form rollers to be moved away from
the cylinder once during each rotation of the cylinder, and means for moving
the support, substantially as described.
46. In a printing machine, the combination with a rotating form-carrier, of
two groups of form-rollers, a source of ink supply, means for constantly sup-
plying ink to that group of form-rollers which the form first meets in its
rotation, and intermittently operating means for supplying ink to the second
group of form-rollers, substantially as described.
47. The combination with two groups of inking rollers, of a moving form
which always comes in contact with the groups of inking rollers in the same
order, means for continuously supplying ink to the group which the form first
meets, and means for intermittently supplying ink to the other group, substan-
tially as described.
48. In an inking apparatus, the combination with two groups of form-rollers
of a distributor, a transferring roll continuously connecting the distributor and
one set of form rollers, and a second transferring roll intermittently connecting
the distributor and the other set of form rollers, substantially as described.
49. In an inking apparatus, the combination with two groups of form rollers,
of a distributing roll, an ink fountain, a ductor for transferring ink from the ink
fountain to the distributing roll, a transferring roll operating to continuously
connect the distributing roll and one set of form rollers, a second transferring
roll, and means operated by the movement of the ductor whereby the second
transferring roll acts to intermittently connect the distributing roll and the
other set of form-rollers, substantially as described.
50. In a printing press, the combination of a continuously rotating plate
or form cylinder, an impression cylinder, means for rotating the impression
cylinder intermittently, so that it shall stop once in each revolution of the
plate cylinder, a second and continuously rotating impression cylinder, and a
second plate cylinder cooperating therewith, substantially as described.
51. In a printing press, the, combination of a continuously rotating plate or
form-cylinder, an impression cylinder, means for rotating the impression cylinder
intermittently, so that it shall stop once in each revolution of the plate cylinder,
means for locking it in such position until the time arrives for it to again
rotate, a second and continuously rotating impression cylinder, and a second
plate cylinder cooperating therewith, to perfect the sheet, substantially as
described.
52. In a printing press, the combination of a continuously-rotating plate or
form cylinder, an impression cylinder, means for rotating the impression
cylinder intermittently, so that it shall stop once in each revolution of the
plate cylinder, segmental gearing for connecting the two cylinders while the
printing operation is in progress, means for communicating a graduated rotatory
motion to the impression cylinder between its position of rest and its position
when geared to the plate cylinder, a second and continuously-rotating impression
cylinder, and a second plate cylinder cooperating therewith to perfect the sheet,
substantially as described.
53. In a printing press, the combination of an impression cylinder, a plate or
form-cylinder, means for connecting the two cylinders, so that the former
cylinder shall receive motion from the latter during a portion only of each
revolution of the plate cylinder, means for graduating the motion transmitted
to the impression cylinder, so that the same shall gradually increase from a
position of rest to equality with the plate cylinder, and shall gradually decrease
from such equality to a position of rest, a second and continuously rotating

page_text: impression cylinder, and a second plate cylinder cooperating therewith, to perfect
the sheet, substantially as described.
54. In a printing press, the combination with a printing couple having a
rotating member, of a second couple having a continuously rotating member,
and means whereby the speed of the first rotating member is varied, in order
that a sheet may be fed thereto, substantially as described.
55. The combination with a printing couple having a rotating member, the
couple acting to print a sheet on one side, of a second printing couple having
a continuously rotating member, and acting to print the sheet on the opposite
side, and means whereby the speed of the first rotating member is varied, in
order that a sheet may be fed thereto, substantially as described.
56. In a printing press, the combination with a printing couple, consisting
of an impression cylinder and a continuously-rotating form cylinder, of a second
printing couple consisting of two continuously rotating cylinders, and means
whereby the rotation of the impression cylinder of the first couple may be
varied with respect to the speed of its form cylinder, in order that a sheet may
be fed thereto, substantially as described.
57. In a printing press, the combination of a continuously-rotating plate or
form cylinder, an impression cylinder which rotates to print the sheets, and
stops to receive the sheets, a second and continuously-rotating impression
cylinder, a second plate cylinder cooperating therewith, and means for trans-
ferring the printed sheet from the first impression cylinder to the second impres-
sion cylinder printed-side out, substantially as described.
58. In a printing press, the combination of a continuously-rotating plate or
form cylinder, an impression cylinder, means for rotating the impression
cylinder intermittently, so that it shall stop once in each revolution of the
plate cylinder, means for giving the impression cylinder a graduated rotary
motion from its position of rest to even motion with the plate cylinder, and
again from even motion with the plate cylinder to a position of rest, a second
and continuously rotating impression cylinder, a second plate cylinder co-operat-
ing therewith, and means for transferring the printed sheet from the first
impression cylinder to the second impression cylinder, with the printed-side out,
substantially as described.
59. In a printing press, the combination of a continuously-rotating plate or
form cylinder, an impression cylinder, means for rotating the impression
cylinder intermittently so that it shall stop once in each revolution of the plate
cylinder, a second and continuously rotating impression cylinder, a second plate
cylinder cooperating therewith, means for transferring the printed sheet from
the first impression cylinder to the second impression cylinder, with the printed-
side out, and means for lifting the journal boxes of the continuously rotating
impression cylinder during a portion of each revolution of the second plate
cylinder, substantially as described.
a
60. In a printing press, the combination with a printing couple having
rotating member, of a second printing couple having a continuously-rotating
member, means whereby the speed of the first rotating member is varied, in
order that a sheet may be fed thereto, and means for transferring a sheet,
printed-side out, from the first printing couple to the second printing couple,
substantially as described.
61. The combination with a printing couple having an impression cylinder,
of a second printing couple consisting of two continuously rotating cylinders,
means for varying the rotation of the impression cylinder of the first couple, in
order that a sheet may be fed thereto, and means for transferring a sheet, with
the printed side out, from the first printing couple to the second printing
couple, substantially as described.
62. The combination of a printing couple, consisting of an impression cylinder
and a continuously rotating form cylinder, of a second printing couple having a
continuously rotating impression cylinder, means for varying the rotation of

page_text: the impression cylinder of the first couple, in order that a sheet may be fed
thereto, and means for transferring a sheet from the first to the second couple,
with its printed side out, substantially as described.
63. In a printing machine, the combination with a printing couple, of two
members, one of which is a member of the printing couple, means for inter-
mittently driving the members in unison, means for varying the speed of one
member with relation to the other, and a feeding member, driven from the
member having the variable speed, substantially as described.
64. In a printing machine, the combination with a constantly rotating printing
couple, of a member intermittently driven in unison with one member of the
couple, means whereby the speed of said member is varied with respect to the
rotation of the couple, and a feeding member driven from said second member,
substantially as described.
65. In a printing machine, the combination with a printing couple, of a
member intermittently driven in unison with the couple, means for varying the
speed of said member with relation to the couple, said means consisting of
engaging surfaces, means for giving one of the surfaces a movement independent
of the movement which it has when driven in unison with the couple, and a
feeding member driven from the member having the variable speed, substantially
as described.
66. In a printing machine, the combination with a constantly rotating printing
couple, of a gear carried on the shaft of one member of the couple, means whereby
said gear is intermittently driven in unison with the couple, and a feeding
cylinder driven from said gear, substantially as described.
67. In a printing machine, the combination with a printing couple, of a gear
mounted on the shaft of one member of the couple, means whereby the gear is
intermittently driven in unison with the couple, means for varying the rotation
of the gear with respect to the movement of said member, said means con-
sisting of engaging surfaces carried by the gear and the member, means for
giving one of the surfaces a movement independent of the movement which it
has when it is driven in unison with the couple; and a feeding cylinder driven
by the gear, substantially as described.
68. In a printing machine, the combination with a printing couple, of a
member, means moving with the member and one member of the couple, whereby
said member has its speed gradually increased, until it is intermittently driven
in unison with the member of the couple, and then gradually decreased until
it comes to a stop, said means consisting of two pairs of engaging surfaces,
and means for giving one surface of each pair a movement independent of the
movement which it has when driven in unison with the member of the couple,
a feeding cylinder driven from said member, and a stopping mechanism for
holding the feeding cylinder in its position of rest, substantially as described.
69. In a printing machine, the combination with a constantly rotating print-
ing couple, of a member, means carried by the member and one member of
the couple, for gradually increasing the speed of said member until it is driven
in unison with the member of the couple, and then gradually decreasing its
speed until it comes to a position of rest, a feeding cylinder driven from said
member, and a stopping mechanism acting to hold the feeding cylinder in its
position of rest, substantially as described.
70. In a printing machine, the combination with two constantly-rotating
printing couples, of a gear carried on the shaft of one member of one of the
couples, means carried by the gear and a member of that couple, for gradually
increasing the speed of the gear, until it is driven in unison with said couple,
and then gradually decreased until it is brought to a position of rest, a feeding
cylinder driven from said gear, a stopping mechanism for holding said feeding
cylinder in its position of rest, and means for transferring a sheet from one
couple to the other substantially as described.
71. In a printing machine, combination of a cylinder provided with a seg-

page_text: mental gearing, a gear wheel adapted to engage with said segmental gearing,
coupling levers mounted on the cylinder, studs or rollers mounted on the gear
wheel, with which the coupling levers engage, and a second cylinder in gear
with said gear wheel, substantially as described.
72. In a printing machine, combination of a cylinder provided with a seg-
mental gearing, a gear wheel adapted to engage with said segmental gearing,
coupling levers mounted on the cylinder, two sets of studs or rollers mounted
on the gear wheel, with which the coupling levers engage, and a second cylinder
in gear with said gear wheel, substantially as described.
73. In a printing machine, the combination with two members, one of which
is a member of the printing couple, of means for intermittently driving the
members in unison, means for varying the speed of one member with relation
to the other, a feeding member driven from the member having the variable
speed, and a second couple printing on the same side of the sheet as the first
couple, substantially as described.
74. In a printing machine, the combination with two members, one of which
is a member of the printing couple, of means for intermittently driving the
members in unison, means for varying the speed of one member with relation
to the other, said means consisting of engaging surfaces, and one of said surfaces
being inclined to its path of movement, means for varying the degree of inclina-
tion of said surface, a feeding member driven from the member having the
variable speed, and a second couple printing on the same side of the sheet as
the first couple, substantially as described.
75. In a printing machine, the combination with a printing couple having a
constantly rotating member, of a second rotating member, means whereby the
speed of the second member is varied with respect to the constantly rotating
member, a feeding member driven by the member having the variable speed,
and a second couple printing on the same side of the sheet as the first couple,
substantially as described.
76. In a printing machine, the combination with a constantly-rotating print-
ing couple, of a gear carried on the shaft of one member of the couple, means
whereby said gear is intermittently driven in unison with the couple, a feeding
cylinder driving from said gear, a second couple, and means for transferring
a sheet from the first to the second couple, with the printed side out, substan-
tially as described.
77. In a printing machine, the combination with a printing couple, of a gear
mounted on the shaft of one member of the couple, means whereby the gear
is intermittently driven in unison with the couple, means for varying the
rotation of the gear with respect to the movement of said member, said means
consisting of engaging surfaces carried by the gear and one member of the
couple, one of said surfaces being inclined to its path of movement, a feeding
cylinder driven by the gear, a second couple, and means for transferring a sheet
from the first to the second couple with the printed side out, substantially as
described.
78. In a printing machine, the combination with a printing couple, of a
member, means moving with the member and one member of the couple, whereby
said member has its speed gradually increased until it is intermittently driven
in unison with the member of the couple and then gradually decreased until
it comes to a stop, said means consisting of two pairs of engaging surfaces,
means for giving one surface of each pair movement independent of the move-
ment which it has when driven in unison with the member of the couple, a
feeding cylinder driven from said member, a stopping mechanism for holding
the feeding cylinder in its position of rest, a second couple, and means for trans-
ferring a sheet from the first to the second couple with the printed side out,
substantially as described.
79. In a printing machine, the combination with two constantly rotating
printing couples, of a gear carried on the shaft of one member of one of the

page_text: couples, means carried by the gear and a member of that couple, for gradually
increasing the speed of the gear until it is driven in unison with said, couple,
and then gradually decreased until it is brought to a position of rest, a feeding
member driven from said gear, a stopping mechanism for holding said feeding
cylinder in its position of rest, and means for transferring a sheet from. one
couple to the other, with the printed side out, substantially as described.
80. In a printing machine, the combination with a printing couple having a
constantly rotating member, of a second, rotating member, means whereby the
speed of the second member is varied with respect. to the constantly rotating
member of the printing couple, a feeding member driven by the member having
a variable speed, a second printing couple having a constantly rotating member,
and-means for transferring a sheet from the first couple to the second, with
the printed side out, substantially as described.
81. The combination with a rotating form carrier having a plurality of forms,
of a plurality of impression members, stopping and starting mechanism by which
one of said members is stopped, to receive a sheet, and then started, means for
rotating said member at a constant speed, and means whereby the sheet is trans-
ferred from said impression member to a succeeding member, substantially as
described.
82. The combination with a rotating form carrier having a plurality of forms,
of a plurality of impression members, means. by which one of these members
is brought to a gradual stop, to receive the sheet, means for gradually starting
said member, and bringing its speed up to the speed of the form-carrier, means
for rotating the impression member at the speed of the form-carrier during
the printing operation, and means for transferring the sheet from said impres-
sion member to a succeeding member, substantially as described.
83. The combination with a continuously rotating form-carrier having a
plurality of forms, of a plurality of impression cylinders, stopping and starting
mechanism by which one of said cylinders is stopped to receive a sheet and then
started, means for rotating said cylinder at a constant speed, and means whereby
the sheet is transferred from said impression cylinder to a succeeding cylinder,
substantially as described.
84. The combination with a rotating form-carrier having two forms, of two
impression cylinders, one cöoperating with each form, means whereby the speed
of one of the cylinders is varied, to receive a sheet, and a transfer cylinder
operating to transfer the sheet from one impression cylinder to the other,
substantially as described.
85. The combination with a continuously rotating form carrier, of a con-
tinuously rotating impression cylinder, a rotating impression cylinder, means
whereby said rotating cylinder is stopped, to receive the sheet, and a continuously
rotating transfer cylinder operating to transfer the sheet from one impression
cylinder to the other, substantially as described.
86. The combination with a rotating form-carrier having a plurality of forms,
of a plurality of impression cylinders, means carried by the form-carrier for
gradually stopping and starting one of said impression cylinders, means also
carried by the form-carrier for rotating said cylinder at a constant speed, and
means whereby the sheet is transferred from one of the cylinders to another,
substantially as described.
87. The combination with a rotating form-carrier having a plurality of forms,
of an impression cylinder, means whereby said cylinder is stopped and started,
a second continuously-rotating impression cylinder, raising and lowering devices
for said cylinder, and means for transferring the sheet from one impression
cylinder to the other, substantially as described.
88. The combination with a single form cylinder having a plurality of forms,
of two impression cylinders cooperating therewith, means intermediate of the
form cylinder and one of the impression cylinders, whereby said impression
cylinder is brought to a gradual stop to receive a sheet, and is then started with

page_text: a gradually accelerating motion, until it reaches the speed of the form-cylinder,
means on the form-cylinder for continuing the rotation of said cylinder, and
means for transferring a sheet from one impression cylinder to the other, sub-
stantially as described.
89. The combination with a continuously rotating form cylinder having two
forms thereon, of an impression cylinder cooperating with one of the forms,
means intermediate of the form cylinder and the impression cylinder, whereby
said impression cylinder is started with a gradually accelerating motion, is
rotated at the same speed as the form-cylinder, and is gradually stopped, a second
continuously-rotating impression cylinder, raising and lowering devices therefor,
and a continuously-rotating transfer cylinder, for transferring the sheet from
one cylinder to the other, substantially as described.
90. In a holding and straining device for surfaces used in printing machines,
the combination with a support, of a pair of jaws for acting on one edge of a
sheet, means for adjusting the jaws with respect to the support, means for
adjusting the support and the jaws simultaneously, and means for holding the
sheet in opposition to the jaws, substantially as described.
91. In a holding and straining device for surfaces used in printing machines,
the combination with a support, of a pair of jaws for acting on one edge of a
sheet, means for adjusting the jaws angularly about the support, means for
adjusting the support and the jaws simultaneously, and means for holding the
sheet in opposition to the jaws, substantially as described.
92. In a holding and straining device for surfaces used in printing machines,
the combination with a shaft, of a pair of jaws for acting on a sheet supported
on the shaft, means for adjusting the jaws around the shaft, means for rotating
the shaft, and means acting to hold the sheet in opposition to the jaws, sub-
stantially as described.
93. In a holding and straining device for surfaces used in printing machines,
the combination with a shaft, of a pair of jaws, means for causing the jaws to
clamp a sheet, means carried by the shaft and one of the jaws, for adjusting
both jaws about the shaft, and means for rotating the shaft, substantially as
described.
94. In a holding and straining device for surfaces used in printing machines,
the combination with a shaft, of a pair of hinged jaws surrounding the shaft,
means for causing the jaws to clamp the plate between them, and means for
adjusting the jaws about the shaft, substantially as described.
95. In a holding and straining device for surfaces used in printing machines,
the combination with a shaft, of a jaw partially embracing the same, a pro-
jection on the jaw, a projection on the shaft, means engaging both projections,
for adjusting them toward and from each other, and thus adjusting the jaw
about the shaft, means cooperating with the jaw to hold a sheet, and means for
rotating the shaft, substantially as described.
96. In a holding and straining device for surfaces used in printing machines.
the combination with a shaft, of a jaw partially encircling the shaft, a pair of
perforated eyes extending from the shaft and jaw, one of said perforations being
threaded, a headed bolt passing loosely through one of said eyes, and engaging
the threaded portion in the other, and holding means cooperating with the jaw,
substantially as described.
97. In a holding and straining device for surfaces used in printing machines,
the combination with a shaft, of a pair of hinged jaws embracing the shaft,
means for forcing the jaws together to produce a clamping action, a pair of
perforated eyes extending from the shaft and one of the jaws, one of said eyes
being threaded, a headed bolt passing loosely through one of the eyes, and
engaging the threaded perforation in the other, and means for rotating the
shaft, substantially as described.
98. In a sheet-holding and straining device, for surfaces used on printing

page_text: machines, the combination with a sheet-supporting surface, of an under jaw, a
plate resting against said jaw, and having an overhanging portion which forms
an upper jaw, and means for giving the plate a sliding movement with respect
to the under jaw, whereby the two jaws are forced together, substantially as
described.
99. In a sheet-holding and straining device for surfaces used on printing
machines, the combination with a sheet supporting surface, of an under jaw, a
plate resting against said jaw, and having an overhanging portion forming an
upper jaw, a projection on each of the jaws, means engaging the projections,
and co-operating therewith, to give the plate a sliding movement with respect
to the under jaw, to force the jaws together, and means for forcing the jaws
away from the sheet-supporting surface, substantially as described.
100. In a sheet-holding and straining device for surfaces used on printing
machines, the combination with a sheet-supporting surface, of a series of pairs
of jaws, means for forcing the jaw together to grip a sheet, a series of abut-
ments, means for forcing the jaws away from the abutments, means for adjusting
the abutments and the jaws with respect to the supporting surface, and means
for holding the other edge of the plate in opposition to the movement of the
jaws and abutments, substantially as described.
101. In a sheet-holding and straining device for surfaces used on printing
machines, the combination with a series of pairs of jaws, of means for forcing
the jaws together, to grip a sheet, a shaft upon which the pairs of jaws are
mounted, a series of abutments on the shaft, and stationary with respect thereto,
means whereby the jaws are forced away from the abutments, means whereby the
shaft may be rotated, to adjust the abutments and the jaws, and
holding the opposite edge of the plate in opposition to the movement of the
jaws and abutments produced by the rotation of the shaft, substantially as
described.
means for
102. In a sheet-holding and straining device for surfaces used on printing
machines, the combination with a shaft, of a series of collars secured thereto,
and having projections which form abutments, a series of jaws provided with
a pair of collars which loosely surround the shaft on each side of the stationary
collars, means for forcing the jaws away from the abutments, a second series
of jaws, means for forcing the jaws together, to grip the sheet, and means
whereby the shaft may be rotated, substantially as described.
103. In a sheet-holding and straining device for surfaces used on printing
machines, the combination with a sheet-supporting surface, of a series of abut-
ments, a series of jaws mounted so as to be movable with respect to the abutments,
means for forcing the jaws away from the abutments, a second series of jaws
carried by the first-named jaws, projections connected to the jaws of each series,
means engaging such projections, for forcing the jaws together, means for
moving the abutments and the jaws away from the sheet-supporting surface,
and means for holding the other edge of the plate in opposition to the move-
ment of the jaws and abutments, substantially as described.
104. In a holding and straining device for surfaces used on printing machines,
the combination with a stationary upper jaw, of a moveable lower jaw, and means
independent of the jaws, and acting on the under jaw, for forcing it against the
upper jaw, whereby said jaw is given a substantially right-line movement as
the clamping action is effected, substantially as described.
105. In a holding and straining device for surfaces used on printing machines,
the combination with a stationary jaw, of a movable jaw, and means independent
of the jaws, for forcing them together, said means having a wedge or toggle
action, whereby the moveable jaw is forced against the stationary jaw with a
substantially right-line movement, substantially as described.
106. In a holding and straining device for surfaces used on printing machines,
the combination with an arm having a shoulder, of a stationary jaw-plate

page_text: carried by the arm, a loosely-mounted jaw, and means, independent of the jaws,
acting against the loosely-mounted jaw and the shoulder, for forcing the jaws
together, substantially as described.
107. In a holding and straining device for surfaces used on printing machines,
the combination with an arm having a curved shoulder, of a rocking block
having a rounded edge resting on the shoulder, a jaw plate having an over-
hanging jaw, a loosely mounted jaw between the block and the overhanging
jaw, and means for rocking the block, to force the said jaw against the over-
hanging jaw, substantially as described.
108. In a holding and straining device for surfaces used on printing machines,
the combination with an arm having a shoulder, and carrying the jaw plate
having an overhanging jaw, of a loosely mounted jaw carried by the jaw plate,
a rocking block also carried by the plate, and means for rocking the block, to
force the loosely-mounted jaw against the overhanging jaw, substantially as
described.
109. In a holding and straining device for surfaces used on printing machines,
the combination with an arm having a curved shoulder, of a jaw plate having
an overhanging jaw secured thereto, a jaw having a curved underface, a pin
connected thereto and extending through an aperture in the overhanging jaw,
a rocking block having a curved edge resting on the curved shoulder, and con-
nected to the overhanging jaw by a bolt and nut, whereby the block may be
rocked, to force the jaws together, substantially as described.
110. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder having a sheet-supporting surface, of a rod
mounted therein a sleeve mounted on the rod, an arm extending from said
sleeve, a jaw plate carried by the arm, a loosely mounted jaw connected to the
jaw plate, a rocking block acting between the loosely mounted jaw and arm,
means whereby the arm and jaws are forced away from the sheet-supporting
surface, and means acting in opposition to said means for forcing the arm and
jaws toward said suface, substantially as described.
111. In a holding and straining device for surfaces used on printing machines,
the combination with a sheet support, of a pair of holding jaws mounted near
the support, means for forcing the jaws away from the sheet support, and means
acting in opposition to the jaws, to force them toward the sheet-support, sub-
stantially as described.
112. In a holding and straining device for surfaces used on printing machines.
the combination with a sheet support, of a rod, a sleeve mounted on the rod, a
pair of jaws carried by the sleeve, means for forcing the jaws away from the
sheet-support, an arm connected to the sleeve, and a spring connected to the
arm and to a part carried by the cylinder, for forcing the jaws toward the
plate-carrying surface, substantially as described.
113. In a holding and straining device for surfaces used on printing machines,
the combination with a sheet support, of a series of sets of sheet-holding jaws,
each set consisting of an overhanging upper jaw and a moveable lower jaw,
means for forcing the lower jaw against the upper jaw, means for independently
adjusting each set of jaws with respect to the sheet-support, and automatic
means for forcing each set of jaws toward the sheet support, substantially as
described.
114. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder having an opening therein, forming a gap,
one side of the opening being bevelled or undercut, of a sheet-holding and
straining device located in the opening, and means for adjusting it toward and
from the undercut face of the opening, to draw the sheet into the opening and
over the sharp edge fromed by the undercut, substantially as described.
115. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder having an opening therein forming a gap, one
side of the opening being bevelled or undercut, of a rod carried by the cylinder,

page_text: a series of plate holding devices pivoted on the rod, said devices having faces
which are substantially parallel to the bevelled or undercut face of the opening,
and means for independently adjusting each of the series of devices about the
rod, and away from the face of the opening, to draw the edge of the sheet over
the sharp edge of the cylinder formed by the undercut, and downward into the
opening, substantially as described.
116. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder having an opening therein forming a gap, one
side of the opening being bevelled or undercut, of a pivoted plate-holding and
straining device pivoted on the centre which lies between the circumference of
the cylinder and its axis, having a face parallel to the bevelled face of the
opening, and means for adjusting said device about its centre, whereby the plate
or sheet of metal held thereby will be drawn over the edge of the opening, and
downwardly into the gap, substantially as described.
'
1
117. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder having an opening therein provided with
bevelled or undercut faces and straight faces, of a pair of rods supported in the
cylinder beneath the opening, a series of jaw plates supported on the rods, said
jaw plates consisting of straight and inclined parts, the inclined parts being
substantially parallel to the undercut faces, and the straight parts being sub-
stantially parallel to the straight faces of the opening to which they are adjacent,
cooperating jaw plates carried by the inclined parts of the first-named jaw
plates, means for forcing the jaw plates together, to grip the material to be held
between them, and means for independently adjusting each pair of jaw plates
about the rods, substantially as described.
118. In a holding and straining device for surfaces used on printing machines,
the combination with a pair of sheet-supporting surfaces having a narrow
opening between them, of straining and holding devices located on each side
of the opening, and devices for forcing the straining devices away from the
edges of the opening, said devices being staggered with respect to each other,
substantially as described.
119. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder provided with a pair of sheet-supporting
surfaces having an opening between them, the edges of the opening being
undercut, of a pair of straining jaws located on each side of the opening, means
for causing each pair of jaws to grip the plate, and bolts acting to force each
pair of jaws away from the undercut edges, said bolts being staggered with
relation to each other, substantially as described.
120. In a holding and straining device for surfaces used on printing machines,
the combination with a sheet-support, of a jaw plate having a jaw face, and
provided with an incline, said face and incline forming two sides of a salient
angle, the base of which is adjacent to the sheet support, a cooperating jaw plate
having a jaw face and an incline, said jaw face and incline forming two sides
of a re-entrant angle, and means for forcing the jaw plates together with 'the
salient angle of the one entering the re-entrant angle of the other, substan-
tially as described.
121. In a holding and straining device for surfaces used on printing machines,
the combination with two sheet-supporting surfaces having an opening between
them, of holding and straining devices located in the opening. and means for
simultaneously adjusting said devices. substantially as described.
122. In a holding and straining device, the combination with a cylinder
having a gan, of a pair of sheet-holding iaws located on each side of the gap,
and means for simultaneously adjusting the jaws, substantially as described.
123. In a holding and straining device for surfaces used on printing machines,
the combination with two sheet-supporting surfaces having an opening between
them. of sheet-holding jaws located on each side of the opening, means for
simultaneously adjusting said jaws, said means consisting of a bolt having

page_text: reversely threaded ends, and means carried by the jaws, by which said ends
are engaged, substantially as described.
124. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder having a gap, of means located in the gap,
for holding and straining a plate to its scat, means for holding the opposite
ends of the plate, said means consisting of a dove-tailed recessed block fitted
in a groove in said cylinder, and provided with shoulders, a block fitting in the
recess of the dove-tailed block, and having shoulders co-operating with the
shoulders of said block, and means for holding said block in position, substan-
tially as described.
125. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder having a gap, of a pair of rods supported
beneath the gap, a series of pairs of pivoted jaws supported on each of the rods,
and means for simultaneously adjusting the opposite pairs of jaws of each series,
said means consisting of a bolt having reversely threaded ends, and means
carried by the jaws, by which said ends are engaged, substantially as described.
126. In a holding and straining device for surfaces used on printing machines,
the combination with a cylinder having a gap, of a pair of rods supported
beneath the gap, a series of pairs of pivoted jaws supported on each of the rods,
one jaw of each pair having a cylindrical recess, cylindrical parts located in,
and free to turn in, said recesses, and having threaded apertures, and reversely
threaded bolts engaging the cylindrical parts of each opposite pair of jaws,
substantially as described.
127. In a printing machine, the cylinder-controlling mechanism substantially
as herein shown and described, and more particularly as shown in Figures 1
to 9, inclusive.
128. The tripping mechanism for printing machines substantially as herein
described, and more particularly shown in Figures 10 to 14, inclusive.
129. The manually-operated mechanism for controlling the inking rollers, so
that the machine may be run to ink up, substantially as herein described, and
more particularly shown in Figures 15, 16, and 17.
130. The manually-operated mechanism for lifting the inking rollers away
from the form, when the machine is stopped, substantially as herein described,
and more particularly shown in Figures 15, 16, and 17.
131. The automatic mechanism for lifting the inking mechanism away from
the form, substantially as shown and described in connection with Figures 18
to 20, inclusive.
132. The mechanism for controlling the distribution of the ink, whereby a greater
amount of ink is sent to the group of rollers with which the form first comes
in contact, substantially as described, and shown in connection with Figures 15,
16, and 17.
133. The herein-described printing machine, having a plurality of printing
couples, arranged to print either in colors, or deliver their impressions on opposite
sides of the sheets, the sheet-receiving member of one of said couples having
its speed varied with relation to the rest of the machine, so that a sheet may
be fed thereto, substantially as described, and as shown, particularly in
Figures 21 to 20, inclusive.
134. The herein-described printing machine, containing a plurality of printing
couples, arranged to print in colors, or deliver their impressions, on the opposite
side of the sheet, and having a feeding member the speed of which is varied
with relation to the rest of the machine, to receive the sheet, substantially as
described, and as shown particularly in Figures 27 to 32, inclusive.
135. The herein-described multicolor printing machine substantially as
described, and more particularly shown in connection with Figures 33 to 38,
inclusive, substantially as described.
136. The plate-holding device to be used in a printing machine substantially
as described, and shown in connection with Figures 41 to 45.

page_text: 137. The plate-holding device to be used in a printing machine substantially
as described, and shown in connection with Figures 46 to 48.
138. The plate-holding device to be used in a printing machine substantially
as described, and shown in connection with Figures 49 to 52.
139. The plate-holding device to be used in a printing machine substantially
as described and shown in connection with Figures 53 and 54.
140. The plate-holding device to be used in a printing machine substantially
as described and shown in connection with Figures 55 to 57.
141. The plate-holding device to be used in a printing machine substantially
as described and shown in connection with Figures 58 to 61.
142. The plate-holding device to be used in a printing machine substantially
as described and shown in connection with Figures 62 to 64.
Dated this 18th day of July 1899.
NEWTON & SON,
Agents for the Applicant.