Improvements in Multicolor Printing Machines.
Year: 1893

page_text: Date of Application, 3rd Oct., 1893-Accepted, 4th Nov., 1893
COMPLETE SPECIFICATION.
Improvements in Multicolor Printing Machines.
I, WALTER SCOTT, of 418 East Front Street, in the City of Plainfield in the
County of Union, and State of New Jersey, United States of America, Manufac-
turer of Printing Machinery, 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, reference being had to the
accompanying drawings and to the letters and figures marked thereon, that is
to say:-
My invention relates to stop-cylinder and other printing machines in which the
cylinder makes two revolutions to each forward stroke of the bed, and is at rest on
the return stroke, and my invention consists in the combinations of the devices
hereinafter described, and is particularly pointed out in the appended claims.
In the accompanying drawings forming part of this Specification,
Figure is a side elevation of one form of the invention, the figure being in two
sections, to be joined end to end,
Figure 2 is a view, partly in section, of one end of the cylinder and a part of
the bed,
Figure 3 is a side elevation of a modification of the cylinder moving mechanism,
Figure 4 is a sectional view, on the horizontal plane indicated by line 4-4 in
Figure 3, of the same,
Figure 5 is a sectional view, on the vertical plane indicated by line 5-5 in
Figure 3, of the same,
Figure 6 shows a side elevation of a second modification of the cylinder moving
mechanism,
Figure 7 is a vertical sectional view on the plane indicated by line 7-7 in
Figure 6,
Figures 8 and 9 are elevations and central vertical sections, respectively, of
devices for moving the cylinder,
Figure 10 is a side view showing the stopping and starting mechanism for the
impression cylinder at the moment the bed begins its forward stroke, and the
cylinder is started,
Figure 11 is an end view showing a detail of the last named mechanism,
Figure 12 is a plan view of part of the bed, one set of inkers and both sets of
dampeners, and
Figure 13 is a view showing the mutilated gear of the impression cylinder and
the segment, separated.
The type bed T runs on suitable guides and is reciprocated by any suitable means
(not shown) commonly used for that purpose. Upon this bed I have shown two
color forms or stones 10 and 11 of a lithographic press, but it must be understood
that my invention is not limited to such a press, since the stones can be replaced by
type forms for polychromatic or other printing..
Each form (and by this term, I include the type form of the letter press and the
color forms or stones of the lithographic press) is inked by its own color rolls. The
form 10 is inked by the rolls I, and the form 11 by the rolls K. A fountain 12,
ductor roller 13, distributing rollers 14, and table 15 supply ink of one color to the
rollers I, while fountain 16, ductor 17, distributing rollers 18 and table 19 supply
ink of another color to the rollers K.
Since the form 10, in one position, is under the inner two of the ink rolling rolls K,
it is necessary to lift these two rolls to prevent them from inking that form and
means for so lifting them will be described hereinafter. The form 11 runs under
two of the inking rolls 1, and these are lifted in a similar manner to prevent them
from inking that form. When the bed is in the position shown in full lines, the

page_text: inner two of the rolls K are in the raised position shown in full lines, and when the
bed has moved far enough to the right to get the form 10 from under them, they
may be lowered into the position shown in dotted lines. When the bed is in the
position to the right shown in dotted lines, the inner two of the rolls I are in the
raised position shown in dotted lines, and may be lowered when the form 11 has
moved enough to the left to be clear of them. It will be understood that in each
case, the rolls are lifted just before the form they should not ink comes under them,
so that they ink their own form as it moves in each direction.
When using the machine for lithographic purposes, water rolls for each stone are
used. The stone 10 is supplied with water by rolls 20, ductor roll 21 and roller and
fountain, 22. The stone 11 supplied with water by rolls 23, ductor 24, and roll
and fountain 25. The rolls 23 are lifted so that they will clear the form 10, and
the rolls 22 are lifted so that they will clear form 11. Rolls 23 are shown in full
lines in their raised positions, while the dotted lines indicate their lower positions.
The full lines show the lower positions of rolls 20, and the dotted lines, their raised
positions. These water rolls may be lifted by any suitable means, such as those
below referred to in connection with the lifting of the ink rolls.
.
In Figure 12, I show devices which raise and lower the inkers and dampeners for
the above named purposes, as follows: The shafts of the inkers K are fitted at each
end with disks l, the shafts of dampeners 23 with disks m, and shafts of dampeners 20
with disks n.
The shafts of inkers I are provided with like disks (not shown).
Disks m are in the same vertical planes as the grooves p, p and disks n (and the
disks of inkers I) are in the same vertical planes as the grooves q, q. The bed T
is provided with grooves p, q, at the sides of and parallel to the forms 10, 11. The
grooves p, q, are not in the same longitudinal vertical planes, but are placed as
shown. Grooves pp, are adjacent the form 10 and grooves 9 g, are adjacent the
form 11. The disks, l, m, n, are of such-size that when they rest on the bed T their
rollers K, 23, 20 (and 1) are lifted clear of the forms, and the grooves p, q, are of
such depth that when they are under the disks l, m, n, the rollers K, 23, 20 (and 1)
rest on the forms.
By this arrangement, the inkers I, K, and the dampeners 20, 23 always coact
with their proper form and are always out of the path of the other, as above set
forth.
The impression cylinder C makes two revolutions to each forward stroke (to the
right in Figure 1), and is at rest or stopped during the return stroke, of the bed.
The impression or drum surface, shown in dotted lines, of the cylinder C extends
nearly all the way around, there being, preferably, a clear space or longitudinal
slot 26, which is at the under side of the cylinder when the cylinder is at rest after
the second revolution and also when it has made one revolution on the forward
stroke of the bed. This slot permits the bed and forms to move back on the return
stroke without touching the cylinder. In this slot I place the grippers 27.
Guides 28 and 29 hold the paper from falling away from the cylinder as the latter
revolves. Brushes 30, common in this class of machines, may be used to smooth
the paper against the impression surface.
Figures 1 and 2 show one form of my new mechanism for turning the cylinder C
during the forward stroke of the bed. place a mutilated gear 31 on one end of
the cylinder C with its cut away portion in juxtaposition to the slot 26. This cut
away or mutilated portion is opposite the bed when cylinder C is at rest after the
second revolution and also when it has made one revolution during the forward
stroke of the bed. On the bed is a rack 32, with the end portions of which the
mutilated gear 31 meshes, after the cylinder C has been started and also carried
by the dead point where the mutilated portion of the gear 31 is down when the
bed is in the middle of its forward stroke. In the form of my invention shown
in Figure 1, it is not material whether the rack 32 be continuous or in two sections
each as long as or a little longer than the gear 31, the sections being placed
the side of the bed and towards the ends. To carry the cylinder over and
beyond the said dead point, I place a segment of a gear 33, on the cylinder C
on

page_text: in juxtaposition to the slot 26, and in a plane different from that of the gear 31,
and on the bed at its middle section I place the movable rack portion 34 to
mesh with the segmental gear 33 on the forward stroke of the bed. Rack
portion 34 is guided by lugs 35, 36 on the bed in its up and down movement.
This portion 34 is supported by two crank levers, 37 and 38, and links 39, 40,
each pivoted at one end to the portion 34, and at the other end to one of the
crank levers, as shown. The upper ends of the levers 37, 38 are connected together
by the link 41, pivotally joined to each. The levers 37, 38 each have a roller at
the lower end for co-operation with one of the cams 42, 43, on the framework, of
the machine. In the position shown in Figure 1, the rack portion 34 is in its raised
position ready to co-operate with the segment 33. In this position the link 40
rests against a stud 44, on the bed, so that the knuckle joints formed by the levers
and links cannot be moved further to the right, and the portion 34 cannot be moved
down except by swinging the upper end of lever 38 to the left, moving the joint of
lever 38 and link 40 to the left of the imaginary line forming the fulcrum points of
said lever and link. When the bed has moved to the right until the roller
of lever 37 has run up the cam 42 and lowered the portion 34 by moving the
levers, the lever 38 abuts against a stud 45, which limits the motion in that
direction. When the bed moves to the left, the roller of lever 38 runs up cam 43,
operates the levers and raises the portion 34.
The devices thus far described only rotate the cylinder C and carry it over the
dead point after the cylinder has been started. To start the cylinder, and bring its
mutilated gear 31 iuto mesh with the rack section, and to stop it when the bed has
reached its right hand position, the starting and stopping devices shown in
Figures 10 and 11 can be used. The arm a, having a toothed rack b on its free
end moves on or with shaft or stud c in the frame of the machine. Rigidly fixed
to or integral with arm a are the arms d, c, carrying rollers f, g, respectively. A
shaft (which may be the main driving shaft of the machine) carries two cams i, k,
for co-action respectively with the rollers fand g. (It is obvious that a closed cam
co-acting with one roller, as f, or one cam, a roller and a spring, may replace the
rollers and cams shown.)
с
The shaft h makes one complete turn to one forward and one backward stroke of
the bed, T, and the cams i, k, are so shaped that at the beginning of a forward
stroke (that is, the position shown in Figure 10) of the bed, cam i, through roller f,
and arms d, a, starts the segment 33, and so causes the gear 31 to mesh with the
rack 32. Cams i, k, are so shaped that, when the bed T is at the middle of its
forward stroke, the rack is clear of the segment 33, and rolls into mesh with the
said segment at the end of said forward stroke. During the return (or non-
printing) stroke of the bed, the rollers f, g, rest on the circular parts of the cams i, k,
and the arm a, segment 33, and cylinder C are at rest in the position shown in the
drawing.
The feeding cylinder F and delivery cylinder D are geared with the impression
cylinder at the end opposite that where the gear 31 and segment 33 are placed, the
gear on cylinder C being a full wheel. These cylinders are or may be also geared
to cylinder C at the end and by the gearing shown; the mutilated gear 31 meshing
with gear 46 on cylinder F and with gear 47 on cylinder D.
The feeding cylinder F is placed above the cylinder C, and is of the same size,
so that it makes two revolutions on the forward stroke of the bed, and is stopped
on the return stroke. Grippers 48 on the feed cylinder take the sheets from the
feed board 49 and gauges 50, or other suitable feeding apparatus, and guides 51
hold the paper to the feed cylinder.
The delivery cylinder D is geared to the impression cylinder C in the manner
described, and makes three revolutions during the forward stroke of the bed and is
stopped during the return stroke thereof. The grippers 52 on the delivery cylinder
take the sheets from the impression cylinder as hereinafter described, and deliver
them to fliers 53. Tapes 54 about the cylinder D and rollers 55 in connection with
presser rolls 56 run the sheets upon the fliers, which deliver them to the board 57.

page_text: A tension roll 58 on pivoted arms 59 is used to obtain a proper tension of the tapes.
The arms 59 may be counter-weighted or be held up by suitable springs.
The grippers of the feed, impression and delivery cylinders are opened and closed
at the proper time (hereinafter referred to) by any suitable mechanism commonly
used for that purpose. I have not deemed it necessary to show such mechanism as
it may be of well known forms. The feed gauges 50 are operated at the proper
times by any means commonly used for that purpose.
The operation of the above described devices when used for lithographic purposes
is as follows:-
In practice, there would be a sheet of paper held by the grippers 27 of the
cylinder C, the said sheet extending partly around the cylinder C and partly
around the cylinder F. Then as the type bed moves to the right in Figure 1, the
cylinder C is started by suitable devices, such as above referred to, for instance;
and the rack 32 and gear 31 mesh to rotate the cylinder C which now takes an
impression from the form 10. The inner two of the ink rolls K drop down as
described when the form 10 is out of the way. The water rolls 23 drop down after
form 10 has passed, in time to wet the form 11.
The grippers of the cylinder C remain closed as they pass the delivery cylinder D
the first time, and open as they pass by the second time, so that the sheet takes
impressions from forms 10 and 11 in succession.
The form 11 is inked by the rolls K, is next wetted by the rolls 23, and then
passes under the cylinder C which takes an impression on the paper. It will be
noticed that the form 11 may be wetted by the rolls 23 just previous to the second
impression, so that all danger of set off from the first impression on the paper to the
second form is avoided.
When the grippers 27 come the second time to the delivery cylinder D, they
open, releasing the sheet, which is grasped by the grippers 52 of the cylinder D.
After passing the rolls 56 the grippers 52 open and the sheet is run on to the fliers 53
by the tapes 54 and rolls 56, and the fliers throw the sheet on the board 57 with the
printed side up.
In the positions shown in Figure 1, the grippers 48 of the feed cylinder F are
closed (without grasping a sheet on the board 49) and remain closed until after
they have passed cylinder C, opening before reaching the board 49. They then
close and grasp a sheet from the board, and open as they approach the imaginary
plane passing through the axes of cylinders C and F in time for the grippers 27 of
the cylinder C to close and grasp the sheet which is thus transferred to the
cylinder C, on the second revolution thereof. When the bed T has reached its
extreme right hand position, all the cylinders are in the position shown, and a sheet
extends partly around cylinders C and F as herein before described.
During the forward stroke of the bed, and just after the form 10 has passed them
and before form 11 has reached them, the rolls 20 are lifted into the positions shown
in dotted lines to clear the form 11 and remain up until that form has moved to the
left far enough to be clear of them, when they may be lowered if desired. The
inner two of the rolls I are lifted after form 10 has passed them and before form 11
has reached them, and remain up until form 11 has moved to the left far enough to
be clear of them, when they are lowered.
The rack portion 34 is in its upper position during the forward stroke of the bed,
and meshes with segmental gear 33 at the proper time to continue the rotation of
cylinder C. As the bed approaches the end of the stroke, the lever 37 is operated
by the cam 42 and lowers the rack portion 34.
As the bed approaches the limit of its throw to the right, and as the rack 32
runs out of mesh with mutilated gear 31, the cylinder C is stopped by any suitable
means, such as are above referred to.
On the return stroke of the bed, the three cylinders remain at rest. The inner
two of inking rolls I are dropped as soon as the form 11 has moved from under
them; dampening rolls 20, with the form of roll lifters shown, will be dropped
(after form 11 has moved from under them) to wet form 10 after it is inked.

page_text: The rack 32 is clear of gear 31, and rack portion 34 is down out of its operative
position. As the bed approaches the left hand limit of its throw, the lever 38 is
operated by cam 43, and the rack portion 34 is raised to its operative position.
In Figures 3, 4 and 5, I have shown a modification of the devices for carrying
the cylinder C over the dead point between its first and second revolutions; these
devices are used, also, for starting and stopping it. The cylinder C has the
mutilated gear 31 and the segment of a gear 33", which is preferably in the same
plane as gear 31 and completes the circle thereof when moved outward. The
segment 33 is part of a sliding plate 60, held to and guided on the end of the
cylinder C by lugs 61, 62 that overlap it as shown. The sliding plate has an
elongated slot through which the shaft S of cylinder C passes, so that there is no
interference between the two. The plate 60 has a roller 63, on a stud 64 which
engages with a circular groove 65 in a plate 66. The plate 66 is guided by lugs 67
on the frame of the machine, as shown, and has an elongated slot 69 through which
the shaft S of the cylinder C passes, thus avoiding interference. A rod 69 is
pivoted at its upper end to the slide or plate 66, and at its lower end is pivoted to
a guide link 70. Link 70 is pivoted at 71 to the frame work of the machine. The
rod carries a roller 72 at its lower end to engage in and be operated by the grooved
cam 73 on shaft 74. The arrow indicates the direction of motion of cam 73.
In the positions shown the bed is just starting on the forward stroke, and the
roller 72 is entering that part 75 of the cam 73 that holds the plate 66 downward
to engage segmental gear 33 with rack 32 to start the cylinder C. The segment 33ª
is held down until the bed reaches its farthest right hand position when the roller 72
enters that part 76 of cam 73 that holds plate 66 in its upper position, and so moves
segment 33* up out of mesh with rack 32. The cylinder is thus stopped.
The cam 73 makes one turn to each two strokes (forward and return) of the
bcd.
In the modification of my invention shown in Figures 6 and 7, the cylinders C, F,
and D, bed T, are arranged as hereinbefore described. The cylinder C, the
mutilated gear 31, the sliding segment of a gear 33", and the rack 32 are placed
relatively to each other as in the modification just described. The sliding
segment 33 is guided by suitable lugs as shown, and has an elongated slot for the
shaft of cylinder C for the purposes above noted. The segment 33 is moved and
held inward by a spring 77, on the cylinder, acting under a lug 78 on the plates 60
carrying the segment, when the plate is not otherwise influenced. The plate 60
carries the roller 63 on a stud as before. It will be noted that the plate 60 is
dished or cut out on its outer face; this allows the spring 77 and lug 78 to be
within the outer face of the plate, so that they in no wise interfere with the plate
having the cam 79. This plate having the cam 79 is loosely hung on shaft S, and
when turned to the left from the position shown, the cam pushes the roller 63, and
segment 33 outward and causes the segment to mesh with the rack 32 and start
the cylinder C. The cam 79 has a seginental gear 80 rigid with its sleeve or plate
by which it is hung on shaft S. A gear segment 81 on arm 82, pivoted at 83 to
the frame, meshes with segmental gear 80. The arm 82 is lifted by the rod 84,
pivoted to it, and by the cain 85 on shaft 86. The cam 85 engages with a roller 87
on rod 84 to move the same. The rod 84 is forked and straddles shaft 86, and is
held close to cam 85 by the collar 88, held in place by a set screw. The weight of
the parts 82, 84, &c. causes them to move down when the cam 85 permits of it, and
this turns the cam 79, through the described gearing, to the left in Figure 6. Or
the cam 85 may be of such form that it will move the rod both up and down. In
turning to the left, the cam 79 forces plate 60 down, causing segment 33 to mesh
with rack 32 and start cylinder C. When the plate 60 and segment 33* are moved
down to complete the circle of gear 31, a spring pressed latch 89, sliding in a lug
on the cylinder moves inward and engages with a shoulder 90 on the plate and
holds it in its outward position, relatively to the gear 31, until the cylinder has
made two revolutions. The segment 33" is thus caused to mesh with the middle
portion of rack 32. When the cylinder has about completed its two revolutions,

page_text: the latch 89 is withdrawn; the plate 60 is then moved inward by the spring 77.
The latch is withdrawn by means of a pin 91 thereon and a rocking lever 92; the
lever has a lug on its side that engages the pin and pulls it out against the force
of the spring 93, until the latch is clear of the shoulder 90, when the lever 92 stops.
When the cylinder C starts to move, the pin rolls downward, clears the lug on the
lever, and the spring forces the latch inward as described. The lever 92 is moved
into the position shown in dotted lines before the latch gets around the second
time. The spring 93 surrounds latch 89 and abuts against its enlarged head and
against the lug through which the latch passes.
The lever 92 is operated by the rod 94, pivotally connected thereto, and a
suitable cam 95 on shaft 86, which engages a roller 96 on rod 94. The rod 94 is
forked at its lower end, straddles the shaft 86, and is held against cam 95 by a
collar 97 and its set screw.
The shaft 86 makes one turn to each two strokes (forward and return) of the
bed. The cam 79 and arm 82 may be returned to the positions shown as soon as
the latch 89 engages behind shoulder 90. The lever 92 pulls out the latch about
the moment the bed comes to a dead stop to the right. The lever 92 may pull
out the latch by its own weight and that of the rod 93, or the last may be moved
in both directions by a grooved cam engaging with the roller on the rod.
The cams 85 and 95 being of well known forms, I have not deemed it necessary
to show them by detail views.
Concerning the devices shown in Figures 3, 4, 5, 6 and 7, it will be noted that
the end portions of the rack mesh with the mutilated gear 31 and that the middle
portion meshes with the segment 33*.
In Figures 8 and 9 is shown means for revolving the cylinder C in one direction.
The gear wheel 31 is loose on the shaft S of the cylinder C and meshes with the
rack 32 on the bed T. A disk 97, fast on the shaft S, confines the gear 31*
between itself and the end of the cylinder C. There is a circular groove 98 in the
face of the wheel 31ª next the disk 97, said groove having a single tooth 99 on its
outer wall. A pawl 100 on the disk 97 lies in the groove 98 and is pressed against
the outer wall thereof by a spring 101, and is engaged by the tooth as the gear
turns in the direction indicated by the arrow.
The operation of these devices is as follows (it being understood that the
cylinders C, F, D, bed, forms, etc. are as above described).
As the bed moves on its forward stroke it turns the cylinder through the
gear 31, its tooth 99, the pawl 100, the disk 97, and the shaft S. On the return
stroke, the cylinder C is at rest, the pawl riding up the inclined back of the tooth
as the latter moves around, until the pawl engages as shown at the end of the
second turn of the gear 31ª.
The positions of the pawl 100 and tooth 99 may be inverted if desired, in which
case each would point just opposite to what it now does.
It will be understood that the ductor rolls of the ink and water fountains are
moved by the usual means and in the usual manner.
It is obvious that the sliding plate 60 may be operated by a system of levers,
links, and a crank, without departing from my invention. For instance, the link or
lever 70 can be replaced by a bell crank lever, and the latter be connected to a
crank by a rod. Or it may be operated by an eccentric or cam on shaft S.
The sheets may be fed to the impression cylinder C by other devices than those
shown, as by hand from a feed board; or feed tapes may be used; and the sheet
may be delivered by other means than those shown, such as throw offs, guides and
tapes; all without departing from my invention.
The grippers of cylinder F, instead of operating as described, may grasp the
sheet from the feed board while the cylinder F is at rest, and remain closed during
the first revolution and until they meet the grippers of the impression cylinder on
the second revolution, when they open and the grippers of the cylinder C grasp the
sheet, as herein before set forth."
Sometimes it may be desirable to dampen the stone 11 after it has been inked

page_text: and before the impression so as to prevent more effectually the ink already on the
once printed sheet from adhering to the stone of the second color.
If the cylinder C were larger and the bed T had more throw, the ink rolls would
not require to be raised and lowered, since the forms would be farther apart, the
inking rolls could be placed further away from the cylinder C, and the wetting
devices could be placed outside the inking rolls.
The water rolls 20 dampen the form 10 before it is inked, and may be lifted
from its path as the bed moves to the left-in Figure 1, so as not to dampen that
form after it is inked.
Although I have described the feed and impression cylinders as stop cylinders, it
is evident that in certain of its branches my invention is not limited to stop cylinders.
The impression cylinder taking two impressions on the same sheet from different
forms may rotate continuously and be lifted on the return stroke of the bed, and
the wetting devices described be used therewith. Nor is it necessary to my
invention that the feed cylinder be of the same size as the impression cylinder.
It will be observed that the distance from the point where the grippers 27 of
the cylinder C grasp the leading edge of the sheet when the cylinder is at rest
back around said cylinder and the cylinder F to where the grippers 48 take the
sheet from the feed board is equal to the length of the stroke of the bed, in the
construction shown.
Many changes may be made in the details of the various parts, their relative
sizes, and so on, without departing from my invention.
Instead of having both colors impressed on the sheet during one forward stroke
of the bed, the parts may be so timed that the first color is impressed during one
printing stroke and the second color during the next printing stroke of the bed, as
this allows a short time for the first color to dry between strokes.
In such case
the first and second color forms become second and first color forms.
Having now particularly described and ascertained the nature of niy said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
1. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a segment of a gear thereon, and a rack portion
at the middle portion of one side of the bed to mesh with the said gear segment to
continue the rotation of the cylinder at that point, one of said segmental gear and
rack portion parts being movable, and being in its operative position during the
forward stroke (or a part thereof) of the bed, and in its inoperative position during
the return stroke of the bed, substantially as described.
2. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a movable segment of a gear thereon, a rack
portion on the bed at the middle section thereof, and cam controlled mechanism
operating the said movable segmental gear, substantially as and for the purposes
described.
3. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a movable segment of a gear thereon, a rack
portion on the bed at the middle section thereof, a cam on a shaft on the frame-
work, a movable plate, and connections therefrom to the segmental gear and the
cam, whereby the segmental gear is moved, substantially as and for the purposes
described.
4. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a movable segment of a gear thereon, a rack
portion on the bed at the middle section thereof, a cam on a shaft on the framework,
a sliding plate, and connections therefrom to the cam and the segmental gear,
whereby the last is moved, substantially as and for the purposes described.
5. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a mutilated gear thereon, the mutilated portion
of the gear being opposite the bed when the cylinder is at rest and when it has
made one revolation, eud rack portions on the bed to mesh with the mutilated gear,

page_text: and mechanism substantially as described continuing the rotation of the cylinder
when the bed is in and near the middle of its forward stroke, substantially as
described.
6. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a segment of a gear thereon, a rack portion on
the bed at the middle section thereof, a cam on a shaft on the framework, a sliding
plate having a circular groove, a roller on the segmental gear engaging the groove,
and a rod pivoted to the plate and engaging the cam, substantially as and for the
purposes described.
7. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a segment of a gear and a mutilated gear
thereon, the mutilated portion of the gear being opposite the bed when the cylinder
is at rest and has made one revolution, end rack portions on the bed to mesh with
the mutilated gear, and a rack portion at the middle section of the bed to mesh
with the said gear segment to continue the rotation of the cylinder at that point on
the forward stroke only of the bed, one of said gear segment and middle rack
portion parts being movable into and out of its operative position, substantially as
described.
8. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a segment of a gear and a mutilated gear
thereon, the mutilated portion of the gear being opposite the bed when the cylinder
is at rest and when it has made one revolution, end rack portions on the bed to
mesh with the mutilated gear, a rack portion at the middle section of the bed to
mesh with said segment gear to continue the rotation of the cylinder at that point
on the forward stroke only of the bed, one of said segment gear and middle rack
portion parts being movable, and cam-controlled mechanism for moving the movable
part into and out of its operative position.
9. In a printing machine, the combination of a reciprocating type bed, its rack,
a two revolution impression stop cylinder, a movable segment of a gear and a
mutilated gear thereon, the mutilated portion of the gear being opposite the bed
when the cylinder is at rest and when it has made one revolution, and cam-controlled
mechanism for moving the segment gear into its operative position, substantially as
described.
10. In a printing machine, the combination of a reciprocating type bed, its rack,
a two revolution impression stop cylinder, a movable segment of a gear and a
mutilated gear thereon, the mutilated portion of the gear being opposite the bed
when the cylinder is at rest and when it has made one revolution, a cam on a shaft
on the framework, a movable plate, and connections therefrom to the cam and the
segmental gear whereby the last is moved into operative position, substantially as
and for the purposes described.
11. In a printing machine, 'the combination of a reciprocating type bed, its rack,
a two revolution impression stop cylinder, a movable segment of a gear and a
mutilated gear thereon, the mutilated portion of the gear being opposite the bed
when the cylinder is at rest and when it has made one revolution, a cam on a shaft
on the framework, sliding plate, and connections therefrom to the segmental gear
and the cam, whereby the segmental gear is moved into and out of its operative
position, substantially as described.
12. In a printing machine, the combination of a reciprocating type bed, its rack,
a two revolution impression stop cylinder, a sliding segment of a gear and a
mutilated gear thereon, the mutilated portion of the gear being opposite the bed
when the cylinder is at rest and when it has made one revolution, a cam on a shaft
on the framework, a sliding plate and connections therefrom to the segmental gear
and the cam, whereby the segmental gear is moved into and out of its operative
position, substantially as and for the purpose described.
13. In a printing machine, the combination of a reciprocating bed carrying two
forms, a set of color rolls for each form, a two revolution impression stop cylinder
taking an impression on the same sheet from each form, feed devices, means

page_text: receiving the sheet from the impression cylinder during the second revolution'
thereof and delivering the same, and mechanism substantially as described connecting
the cylinder and the bed, whereby the cylinder is caused to revolve in one direction
and only during the forward stroke of the bed, substantially as described.
";
14. In a printing machine, the combination of a reciprocating bed carrying two'
lithographic forms, a set of color rolls and a set of water rolls for each form, a
two revolution impression stop cylinder taking impressions on the same sheet from
each form, feed devices, delivery means receiving the sheet from the cylinder during
the second revolution thereof, and mechanism substantially as described connecting
the bed and cylinder and rotating the last in one direction and only during the
forward stroke of the bed, substantially as and for the purposes described.
15. In a printing machine, the combination of a reciprocating type bed carrying
two lithographic forms, a set of color rolls and a set of water rolls for each form,
the water rolls for the form giving the second impression, being between one set of
color rolls and the impression cylinder, and wetting it after it is inked and before
the impression, a two revolution impression stop cylinder taking impressions on the
same sheet from each form, feed devices, delivery means, and mechanism connecting
and operating the parts, substantially as described.
16. In a printing machine, the combination of a reciprocating type bed carrying
two forms, a set of color rolls for each form, a two revolution impression stop
cylinder taking impressions on the same sheet from each form, a two revolution feed
cylinder, delivery means receiving the sheet from the impression cylinder during
the second revolution thereof, and mechanism substantially as described connecting
the bed and impression cylinder, and rotating the last in one direction and only
during the forward stroke of the bed, substantially as and for the purposes
described.
17. In a printing machine, the combination of a reciprocating type bed carrying
two forms, a set of color rolls for each form, a two revolution impression stop
cylinder taking impressions from each form on the same sheet, feed devices, a three
revolution delivery cylinder receiving the sheet from the impression cylinder
during the second revolution thereof, and mechanism substantially as described,
connecting the bed and impression cylinder, and rotating the last in one direction
and only during the forward stroke of the bed, substantially as and for the purposes
described.
18. In a printing machine, the combination of a reciprocating type bed carrying
two forms, a set of color rolls for each form, a two revolution impression stop cylinder
taking impressions from each form on the same sheet, a two revolution feed cylinder,
a three revolution delivery cylinder receiving the sheet from the impression
cylinder during the second revolution thereof, and mechanism substantially as
described connecting the bed and impression cylinder and rotating the last in one
direction and only during the forward stroke of the bed, substantially as and for
the purposes described.
19. In a printing machine, the combination of a reciprocating type bed carrying
two lithographic forms, a set of color rolls and a set of water rolls for each form,
the water rolls for the form giving the second impression being between one set of
color rolls and the impression cylinder and wetting it after it is inked and before
the impression, a two revolution stop cylinder taking an impression on the same
sheet from each form, a two revolution feed cylinder, delivery means receiving the
sheet from the impression cylinder during the second revolution thereof, and
mechanism substantially as described connecting the bed and impression cylinder
rotating the last in one direction and only during the forward stroke of the bed,
substantially as described.
20. In a printing machine, the combination of a reciprocating type bed carrying
two lithographic forms, a set of color rolls and a set of water rolls for each form,
the water rolls for the form giving the second impression, being between one set of
color rolls and the impression cylinder, and wetting it after it is inked and before
the impression, a two revolution impression stop cylinder taking impressions from
L
"

page_text: each form on the same sheet, feed devices, a three revolution delivery cylinder
receiving the sheet from the impression cylinder during the second revolution
thereof, and mechanism substantially as described connecting the bed and impression
cylinder and rotating the last in one direction and only during the forward stroke
of the bed, substantially as and for the purposes described.
21. In a printing machine, the combination of a reciprocating type bed carrying
two lithographic forms, a set of color rolls and a set of water rolls for each form,
the water rolls for the form giving the second impression, being between one set of
color rolls and the impression cylinder, and wetting it after it is inked and before
the impression, a two revolution impression stop cylinder taking impressions from
each form on the same sheet, a two revolution feed cylinder, a three revolution
delivery cylinder receiving the sheet from the impression cylinder during the second
revolution thereof, and mechanism substantially as described connecting the bed
and the impression cylinder and rotating the last in one direction and only during
the forward stroke of the bed, substantially as and for the purposes described.
22. In a printing machine, the combination of a reciprocating type bed carrying
two lithographic forms, a set of color rolls and a set of water rolls for each form, a
two revolution impression stop cylinder taking an impression on the same sheet
from each form, a two revolution feed cylinder, delivery means receiving the sheet
from the impression cylinder during the second revolution thereof, and mechanism
substantially as described connecting the bed and impression cylinder rotating the
last in one direction and only during the forward stroke of the bed, substantially as
described.
23. In a printing machine, the combination of a reciprocating type bed carrying
two lithographic forms, a set of color rolls and a set of water rolls for each form,
a two revolution impression stop cylinder taking an impression on the same sheet
from each form, feed devices, a three revolution delivery cylinder receiving the
sheet from the impression cylinder during the second revolution thereof, and
mechanism substantially as described connecting the bed and impression cylinder
rotating the last in one direction and only during the forward stroke of the bed,
substantially as described.
24. In a printing machine, the combination of a reciprocating type bed carrying
two lithographic forms, a set of color rolls and a set of water rolls for each form,
a two revolution impression stop cylinder taking an impression on the same sheet
from each form, a two revolution feed cylinder, a three revolution delivery cylinder
receiving the sheet from the impression cylinder during the second revolution thereof,
and mechanism substantially as described connecting the bed and impression cylinder
rotating the last in one direction and only during the forward stroke of the bed,
substantially as described.
25. In a printing machine, the combination of a reciprocating type bed, a two
revolution impression stop cylinder, a segment of a gear thereon, a rack section at
the middle portion of one side of the bed to mesh with said gear segment to continue
the rotation of the cylinder at that point on the forward stroke of the bed, one of
said segmental parts being movable, and cam-controlled mechanism operating said
movable part, substantially as and for the purposes described.
26. In a printing machine, the combination of a reciprocating type bed carrying
two lithographic forms, a set of color rolls and a set of water rolls for each form,
a two revolution impression stop cylinder taking an impression from each form on
the same sheet, feed devices, delivery means, mechanism connecting the bed and
the impression cylinder rotating the last in one direction and only during the
forward stroke of the bed, and devices substantially as described, for lifting the
water rolls for one form from the path of the other form, substantially as and for
the purposes described.
27. In a printing machine, the combination of a reciprocating type bed carrying
two forms, inking devices, wetting devices for each form, and an impression
cylinder taking an impression from each form on the same sheet, the wetting devices
for the form giving the second impression being between one set of color rolls and

page_text: the impression cylinder and wetting the said form before and after it is inked and
before the impression, substantially as described.
28. In a printing. machine, the combination of a reciprocating bed having two
forms thereon, an impression cylinder taking an impression on the same sheet
from each form, and inking and wetting devices on each side of the cylinder,
one of each for each form, the wetting devices for the form giving the second
impression being between the inkers for that form and the cylinders, substantially
as described.
29. In a printing machine, the combination of an impression stop cylinder and a
feed stop cylinder, the grippers of the feed cylinder taking the sheet while the
cylinder is at rest, substantially as described.
30. In a printing machine, the combination of an impression stop cylinder and a
feed stop cylinder, the grippers of the feed cylinder taking the sheet while the
cylinder is at rest, and the grippers of the two cylinders, when the latter are at
rest, being relatively located so that lines drawn from that part of each gripper
grasping the sheet through the center of its cylinder intersect on the common tangent
to the cylinders, substantially as described.
Date: : 11
1000
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicant.