IMPROVEMENTS IN PRINTING MACHINES OR PRESSES
Year: 1884

page_text: I WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co, Patent Agents,
Southampton Buildings in the County of Middlesex do hereby declare the nature
of my invention for "IMPROVEMENTS IN PRINTING MACHINES OR PRESSES" 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 printing machines or presses and comprises improve-
ments in the sheet delivery apparatus whereby the printed sheets are taken from
the front of the cylinder after printing and are carried from the cylinder above
and beyond the inking apparatus to a receiving table arranged at the further end
of the press. In thus delivering the printed sheets it is necessary that the head
of the sheet should be grasped by delivery grippers at short intervals in its width
and that it should be carried quickly or floated over the inking apparatus to deliver
its head first and printed side up upon the pile without smutting or rubbing tho
printed matter, as is apt to be done by delivery apparatus comprising flys and
tapes for supporting the sheet. To this end the invention consists partly in the
combination with an impression cylinder capable of rotation in one direction only
for printing and a feed board at the back of the cylinder, of chain wheels arranged
above and at the front of the cylinder, a receiving table at the further end of the
press, chain wheels adjacent to the said receiving table, endless chains passing
around said chain wheels, and one or more gripper bars and gripper rods extending
between and connecting the chains and provided between the chains with gripper
fingers, said chains being capable of movement in one direction only to take the
printed sheet from the cylinder and carry it over the inking apparatus and to the
receiving table.
In order to enable the delivery grippers to take the printed sheet from the
cylinder properly and without tearing it and to deliver it on the pile in a smooth
condition and without rumpling, it is desirable that the endless chains which
constitute a carrier for the delivery gripper should come nearly or quito to a stand
still in a stop cylinder press to take the printed sheet from the cylinder, and that
they should be slowed down to deliver the sheet on the pile and to enable the sheet,

page_text: "
to be "kited or floated over the inking apparatus and moved to the receiving
table in the time available, it is desirable that the carrier should be moved rapidly
in carrying the sheet from the cylinder to the receiving table. To these ends the
invention further partly consists in the combination with an impression cylinder,
of an endless carrier provided with delivery grippers, arranged at the front of the
cylinder and having an alternately accelerated and retarded movement whereby
the carrier is moved quickly to carry the printed sheets from the cylinder to the
receiving table and is slowed to deliver the printed sheets; and whereby the
carrier in a stop-cylinder press is also slowed or stopped to take the printed sheets
from the cylinder.
The endless carrier might be provided with a single set of delivery grippers but
in such case the delivery grippers would have to make the complete circuit of the
carrier at each delivery operation. To obviate or avoid such unnecessarily quick
movement of the carrier the invention further partly consists in the combination
with an impression cylinder, of an endless carrier provided with two sets of delivery
grippers arranged at equi-distant points in the carrier the said carrier being
arranged at the front of the cylinder and having a movement which is alternately
accelerated and retarded.
The invention also partly consists in the combination with an impression
cylinder, of an endless carrier provided with delivery grippers and arranged at the
front of the cylinder, a shaft having a uniform speed of rotation and variable
transmitting mechanism for imparting to said carrier from said shaft a movement
which is alternately accelerated and retarded.
It also partly consists in the combination with an impression cylinder, of an
endless carrier, provided with delivery grippers arranged at the front of the
cylinder, having a movement which is alternately accelerated and retarded, and
receiving motion from the cylinder while it is so retarded in order that the cylinder
grippers and delivery grippers shall be caused to move in proper relation with
each other during the transfer of the sheet from the cylinder grippers to the delivery
grippers.
It also partly consists in the combination with an impression cylinder and an
endless carrier arranged at the front thereof and provided with delivery grippers,
of shafts adjacent to the cylinder and at the further end of the press carrying
wheels for supporting and operating said carrier, a bevel pinion and a disc on one
of said shafts the pinion being loose and the disc fast on said shaft and the pinion
and disc being connected by a pin and segment slot, whereby the pinion is enabled
to turn within certain limits independently of the shaft, an upright shaft having
an alternately accelerated and retarded movement and geared with said pinion, and
short toothed sectors, on the cylinder and one of the wheel shafts whereby move-
ment is imparted from the cylinder to the last said shaft while the speed of the
carrier is retarded.
It also partly consists in the combination with the aforesaid impression cylinder
an endless carrier with delivery grippers, shafts and wheels for supporting and
operating the currier, and an upright shaft geared with one of the wheel shafts, of
a horizontal shaft geared with the upright shaft and provided with a pinion, a
reciprocating rack-bar and a cam for producing a variable movement thereof, and a
swinging frame or hanger carrying wheels which are constantly in gear with the
said pinion, and which are alternately moved to impart from the reciprocating rack
bar a variable rotary motion to said upright shaft. Also in combination with the
foregoing, of a second can and rod, whereby the swinging frame or hanger is
operated to move its wheels alternately into and out of engagement with the
reciprocating rack-bar.
In order that the printed sheet shall meet with no obstacle to its transfer from
the cylinder grippers to the delivery grippers, it is desirable that the cylinder
grippers should be withdrawn entirely within the gripper recess of the cylinder at
the time of transferring the sheet, and to this end the invention further partly.
consists in the combination with an impression cylinder, of a rock-shaft arranged

page_text: in the gripper-recess of the cylinder and provided with arms wherein is journalled-
a gripper shaft provided with delivery grippers, a spring for closing the grippers
and an arm upon the rock shaft adapted to engage with a stationary cam for
effecting the opening of the cylinder grippers."
It also partly consists in the combination with an impression cylinder, of an
endless carrier provided with delivery grippers and having a movement which is
accelerated and retarded, cylinder grippers and a gripper shaft supporting said
grippers and having a rocking movement to release the printed sheet and a bodily
movement to withdraw the grippers within the gripper recess of the cylinder.
It also partly consists in the combination with the endless delivery chains, of
small heads or discs connected by necks or posts with certain links of the chains,
a gripper shaft journalled in said heads or discs and provided with gripper fingers,
a gripper bar fixed in said heads or discs and provided with gripper rests, a gripper
closing spring and a catch carried by one of the heads or discs and engaging with
the gripper shaft or a collar thereon, whereby the grippers may be held open.
The invention further comprises improved means for cutting or slitting the printed
sheet while upon the cylinder and in a direction circumferential thereof and which,
in a press having the front delivery apparatus above described, is arranged at the
back of the cylinder and below the feed-board.
"
This part of the invention consists partly in the combination with a rotating
impression cylinder, of a stationary blade or cutter arranged close to or against >
periphery of the cylinder to be introduced under the paper thereon and a rotary
blade or cutter for acting on the paper from the outside thereof and operating in
conjunction with the stationary blado or cutter with a shearing action, the rotary
blade or cutter preferably having its rotary motion in the same direction as the
adjacent portion of the cylinder and at a greater speed than the cylinder, whereby.
the effect of the stationary and rotary cutters is to cut or divide the sheet by
a slitting or shearing action, whereby even very thin or tissue paper may be cut
cleanly and without tearing.
It also partly consists in the combination with a rotating impression cylinder,
of a stationary blade to be introduced flatwiso-under the paper and having a vertical
slot and a rotary blade or cutter arranged opposite the slot and acting-on-tho-
outside of the paper with a shearing action in conjunction with the edge of the
blade at one side of the slot, the said stationary blade having a thin supporting
shank whereby it is attached to an arm or support and which is in the same vertical
plane with the slot, whereby the pieces of paper which have been formed by the
cut are allowed to pass said shank.
In the accompanying drawing
Figure 1 is a side elevation of such parts of a press as are necessary to illustrate
the invention, portions of the press, between the cylinder and receiving table being
broken away to reduce the length of the drawing.
Figuro 2 is an end elevation looking from the end at which the receiving table
is located towards the cylinder.
Figure 2* is a side view of a cam, also shown in Figure 2.
Figure 3 is a vertical section on the line, x, Figure 2 of portions of the press;
Figure 4 is a side view of the end portion of the delivery apparatus which is
adjacent to the receiving table.
Figure 5 is an end view of a portion of the cylinder and a side view of the end
portion of the delivery apparatus which is above the cylinder, a hood which covers
one side of the delivery apparatus being removed to enable the chain-wheel and .
chain to be shown in full lines.
T
Figure 5, is a view of the cylinder corresponding to Figure 5, but showing the
position of the gripper mechanism when the cylinder is stopped and the grippers.
are ready to take the sheet.
Figure 6 is vertical section on the dotted line y, y, Figure 5 of the delivery.

page_text: Figure 7 is a section of that portion of the delivery apparatus which is over the
cylinder, on the plane of the dotted line, 5, 2, Figure 6.
Figure 8 is a similar section in the plane of the dotted line 1, 1, Figure 6.
Figure 9 is a vertical section of a portion of the delivery apparatus at one side
of the press and at the end of the press at which the receiving table is located, 5
looking away from the cylinder; and
Figure 10 is a vertical section corresponding to Figure 9, of the portion of the
delivery apparatus at the other side of the press.
Figure 11 is an end view of certain of the parts shown in Figure 9, looking
towards the left of said Figure;
-
Figure 12 is a plan of a portion of one of the endless delivery chains and gripper
mechanism connected therewith.
Figure 13 is a sectional view on the dotted line 2, 2, Figure 12.
Figure 14, is an end view of the impression cylinder and the cutting apparatus
applied thereto.
Figure 15 is a horizontal section of a portion of the cylinder and a plan of the
cutting apparatus.
]
Figure 16 is a sectional view drawn to an enlarged scale illustrating the cutting
apparatus and adjacent edge portion of the cylinder with its tympan grippers, the
stationary blade being introduced flatwise under the sheet.
Figure 17 is a horizontal section on the dotted line *, Figure 16, illustrating
the flat stationary blade and rotary cutter.
Figure 18 is a rear view of the flat stationary blade and a sectional view of its
supporting shank.
2
Figure 19 is a sectional view drawn to an enlarged scale similar to Figure 16, 2
and illustrating a pointed blade which is introduced edgewise under the printed
sheet; and
Figure 20, is a plan of the parts shown in Figure 19.
Similar letters of reference indicate corresponding parts in the several figures.
In the drawings there are represented only snch parts of a stop-cylinder press 3
as are necessary to illustrate the invention, and all the parts not shown may be of
the usual or any other suitable construction.
A indicates the main side frames of the press; A¹ the standards which support
the impression cylinder B, and A² the standards which support the receiving table
or bonid C.
Between the cylinder B, and receiving table or board C, is arranged the inking
apparatus of which there is only shown an arbitrary illustration C** but which
may be of any suitable or well known character, and in delivering printed sheets
from the front of the cylinder they have to pass clear over the inking apparatus.
I will first describe the construction and arrangement of two endless chains D, 4
which in this example of the invention form the carrier for the delivery grippers.
Over the cylinder B is arranged a shaft, D¹, extending parallel with the axis of
the cylinder, and at the further end of the press adjacent to the receiving table or
board C, is a similar shaft D³, upon the shaft D' are secured chain wheels D³ which
are provided with teeth or projections to engage positively with the chains; and
upon the shaft D are similar chain wheels D, provided with projections_which
engage with the chains and so impart motion to them.
The chains D, are
composed of links of two forms, indicated by the letters a, b. Alternate links are
milled, recessed or channelled on the top and bottom to form flanges a' on opposite
sides, and between the links, a, there extend pairs of links, b, The-links, a are so i
formed that the space between the flanges, a¹, is about equal to the thickness or
width of the chain wheels D³, D'; they will therefore embrace the wheels, as shown
in Figures 9 and 10 and will be held against side movement thereon.
Between the chain wheels D³, D', there extend long straight guides or ways b',
which are of about the same width as the aforesaid chain wheels and which are i
also embraced by the pairs of flanges a¹ on the links, a. By this means the two

page_text: .
chains are maintained at a proper and uniform distance apart and are provented
from spreading.
On the outer side of each link a is pivotted a roller a³, as shown best in
Figure 12; and these rollers serve to guide the chains on the inner sides of the
flanges a³, which are formed at the top and bottom of hoods D³ which partially
enclose the chains and the chain whee's D³, at the cylinder end, as best shown in
Figures 5 and G and dotted in Figures 9 and 10.
Two belts or bands of metal or other material might bo substituted for the
chains.
The chains have attached to them two sets of delivery grippers which are equi
distant or arranged at opposite points in the chains, as indicated in Figure 1.
Obviously a single set of delivery grippers could be employed, but in such case the
chains would have to make a complete circuit at each delivery, in order to bring the
single sot of grippers round to the point of taking the sheet at the proper time.
The distance from the cylinder to the receiving table is considerable, and in
order to make the complete circuit the grippers would have to travel at a very
high speed, I therefore find it desirable to employ two sets of delivery grippers,
set equidistant from each other in the chains, and the chains will then effect the
delivery of two sheets in each circuit. More than two sets of delivery grippers
might be employed, but the particular mechanism here shown for operating the
chains is adapted for two sets only a description of one set of delivery grippers
will apply to both.
Connected with opposite links a in the two chains D, are heads or discs, c, which
are here shown as formed integral with such links, they being connected by
necks, cl, the form of which is shown in Figures 12 and 13. The two heads or
discs,.c, are connected by a gripper rod or shaft, c², adapted to turn in them and a
gripper bar, c, which is incapable of turning. To the rod or shaft, c³, are rigidly
attached the delivery grippers C' and to the bar c³ are rigidly attached the gripper
rests C³ all as best shown in Figures 12 and 13.
:
The gripper rod or shaft, c, is turned by a spring co, applied to it, as shown in
Figures 6 and-9, to close the grippers, on the rests c, and hold the printed
sheet.
On the outer side of the head or disc, c, at one end of the gripper rod c³ is a
hub, c, notched at cs, and to the head or disc is pivotted a catch c, adapted to
engage with the notched hub c', as shown in Figure 13, and serving thereby to hold
or lock tho gripper rod c³ and keep the grippers, c, open. This catch c³ is held in
engagement with the notched hub c' by a spring co, as shown in Figure 13, and to
release the catch it is only necessary to press on the tail-end thereof, whereupon
the grippers will close automatically by the force of the spring, co.
On the gripper rod or shaft, c, at the inner side of the disc or head. c, is fixed a
toothed hub or sector cl, having a long tooth or projection c¹; and to open the
grippers c', it is only necessary to turn the hub or sector o¹¹ until the catch c³ snaps
into the notched hub c' on the end of the rod c².
The means employed for tripping the catch and for opening the grippers are
simple and will be readily understood. On one of the hoods D, which shield the
chain wheels D³, is an inwardly projecting pin c¹³, best shown in Figures 6 and 8,
but also in Figure 5; and near the chain wheels D, at the receiving table or
board C, is a rack c", which is fixed to one of tho guides or tracks b', as best
shown in Figures 4 and 5.
Just before the grippers c' reach the position shown in Figures 5 and 8, the tail
of the catch co strikes against the pin c¹³, thereby removing the catch from the
notched hub c', and allowing the grippers to close on to and take the printed
sheet. The grippers hold the sheet by the pressure of the spring until the
receiving table or board C is reached, at which place the toothed hub or sector c¹¹,
with its long tooth c¹³, comes into engagement with the rack c, whereupon the
grippers c are swung open until the catch a snaps into the notched bub to hold
the grippors open, in which position they remain until they reach. the position at

page_text: which they take the sheet. As shown at Figure 4 the sector c¹ is just leaving the
rack c¹, the grippers c having been opened sufficiently far to enable the catch c
to snap into the notched hub c' and hold the grippers c* open.
I will now describe the construction and arrangement of the cylinder grippers,
shown in Figures 5, 5*, 6 and 7.
In Figure 5 the cylinder B. is shown in the position it occupies at the time the
cylinder grippers E have just been raised to release the printed sheet and allow it
to be taken by the delivery grippers ; and the cylinder rotates in the directions
indicated by the arrow 3, Figure 5, and comes to a stop when the receiving edge d
of the gripper-recess B' reaches the position indicated by the line 4-4 Figure 5,
where it remains until the printed sheet has been carried past the cylinder by the
movement of the delivery grippers, c' and a new sheet has been taken from the
feed board B**. After the cylinder grippers E have released the printed sheet, it
is necessary to remove them from in front of d in order that they will not be in
the way of the sheet as it is carried off by the delivery grippers, and to effect such
removal I withdraw the cylinder grippers into the gripper recess B¹.
The cylinder grippers E are fixed upon a gripper-shaft E' which, instead of being
mounted in fixed bearings as is usual, is so mounted that it may be moved or swung
towards or from the centre of the cylinder to withdraw the grippers into the
gripper recess.
E indicates a rock-shaft mounted in bearings d³, and carrying arms E³ in the
outer ends of which the gripper shaft E' is journalled.
To the end of the rock-shaft E' is fixed an arm E carrying a bowl or roller d
which makes contact with a cam E³ on the cylinder standards A' as the cylinder
rotates. This cam E³ has a section or portion d³, which yields under the roller d³
when the latter moves backward over it, for a purpose hereinafter explained.
On the end of the gripper shaft E' at the side of the press opposite the side on
which is the arm E, is fixed an arm E, to which is connected one end of a rod E³,
having a gripper closing spring Es, coiled upon it, and provided or fastened to the
cylinder at the other end d', as shown in Figure 1. The outward movement of
the arms E³ and gripper shaft El, away from the centre of the cylinder, are limited
by a stop which may consist of a shoulder d on the arm E³, bearing against a
pin t, fixed in the cylinder as shown in Figure 5.
G indicates a cam which is fulcrummed at do, and has connected with it a rod d'
whereby it is raised at the proper time to release the grippers and allow them to
close as hereinafter described.
Just as the cylinder reaches the position shown in Figure 5, the roller d³, on the
arm F, has come in contact with the point of the cam G, and has turned the
gripper shaft, E' sufficiently to raise the grippers from the cylinder.
Just as the grippers E are raised, the roller d³ on the arm E' comes in contact
with the stationary cam E³, and the continued rotation of the cylinder swings the
arms E, and gripper shaft, E, towards the centre of the cylinder and thereby
withdraws the grippers E into the gripper recess B¹; the roller d³ meanwhile
running down on the inclined surface d' of the cam G. When the receiving edge d
of the gripper recess comes to the point marked d* in Figure 5, which is half way
from the position indicated in full lines in said Figure, to the stopping point 4,
the several parts of the gripper mechanism occupy the positions indicated by dotted
lines in Figure 5, and at that time the roller d² of the arm E' is just passing the
greatest projection of the cam E. During the remaining part of the movement
to the stopping point 4 4 the roller ds on the arm F dwells on the surface d¹º of the
cam, and the arm E being released from the action of the cam E³, the gripper-
shaft E' and arms E³, are swung outwards, and the several parts assume the
positions shown in Figure 5*, with the grippers E, in proper position to take the
sheet but raised as in Figure 5. The grippers remain raised until the sheet is fed
to them, whereupon the cam G rises and the grippers are at once closed by the
action of the gripper closing spring E³.

page_text: The yielding section d³ of the cam E³ is pivotted at a, and is held up in the
position shown in Figures 5 and 5*, by a spring S'. When it is necessary to back
up the press the roller d', moving backward over the section d³, will depress it,
and hence the cam-section will not prevent the backing-up of the press, as it would
do if made rigid and unyielding.
The mechanism for operating the chains D with a movement which is alternately
accelerated and retarded, as shewn in Figures 1, 2 and 3, and parts of such
mechanism, are shewn in Figures 4, 9 and 11.
Upon one end of the chain-wheel shaft D is a bevel pinion e, which is loose
upon the shaft, and adjacent thereto is a disc e¹ which is fast on said shaft, and
carries a pine which enters a segmental slot e³ in a hub or disc formed on the
pinion. This slot is shewn dotted in Figure 11.
The shaft D' always turns in the direction indicated by the arrow in Figures 9
and 10, and the connection of the loose pinion e and fast disc, e¹, by the pin and
slot, enables the shaft to be turned in advance of the pinion for a time, while
allowing of the shaft being turned by the pinion as soon as the rear end of the
slot comes against the pin. The purpose of this connection will be hereinafter
explained.
H indicates an upright shaft mounted in bearings e, and having at its upper end
a bovel wheel e" which gears with and operates the pinion e.
This shaft should
turn in the direction indicated by the arrows Figures 2, 3 and 9, and it carries at
its lower end a bevel pinion f, which gears with and receives motion from a bevel
wheel f¹, secured to a short horizontal shaft f*.
I indicates a shaft having a continuous and uniform rotary motion, and from it
an alternately accelerated and retarded motion is transmitted to the horizontal
shaft by the mechanism next described.
A horizontal bar J extends across and is capable of being reciprocated in
bearings f³. At one end its upper and lower edges are toothed to form racks g, g¹,
and at the other end it is provided with bowls or rollers h, h.
A frame or hanger J' is loosely mounted on the shaft, f³, and provided with
pivots or studs i, above and below the bar J. On the pivot or stud i are loosely
imounted a pinion j and wheel k and on the pivot or stud are loosely mounted a
similar pinion and wheel k¹. Each pinion and wheel are connected together so
as to rotate as one, and both wheels k, are in constant engagement with a
pinion, on the shaft f, while the pinions j, j' are adapted to be alternately
engaged with the racks g, g', by the swinging of the frame or hanger J, to receivo
motion from the reciprocation thereof.
When the hanger J' is swung into the position shewn in Figure 2, the pinion j'
is engaged with the rack gl, and the pinion j is disengaged from the rack g, but
when the hanger is swung into the other position, the pinion j is engaged with the
rack g, and the pinion j is disengaged from the rack, g².
The rack bar J is slotted so as to straddle the shaft I, and on said shaft is a
cam I which engages with the rollers h h on the rack bar J. The form of this
cam is clearly shown in the view Figure 2*, the position of the cam being the
same as in Figure 2, and this cam serves to reciprocats the rack bar J at a
variable speed.
On the shaft I as shown in Figure 2, in front of the cam I is a cam I², having
the groove l
I indicates a rod which is forked to straddle the shaft, I, and is connected with
the lower portion of the swinging frame or hanger J. On the rod I³ is a roller l',
which engages with the groove of the cam 12 and imparts motion to said rod.
Each rotation of the cam I produces a forward and backward movement of the
rack bar J, and each rotation of the cam I produces a forward and backward
movement of the rod 1*.
At opposite points in the cam I' are two portions m, m, which are concentric to
the shaft I. and at each end of its movement the rack-har J dwells while the

page_text: portions concentric with the shaft I, but these portions form the principal
portions of the groove, and between them are steps or off sets 13 in the groove l,
which effect the movement of the rod I first in one direction and then in the
other.
The cams II are shown in Figure 2 in the positions which they occupy when i
the cylinder B and the chains D with their delivery grippers c are in the positions
shown in Figure 5, and it will be understood that the cam 1 has just moved the
rod 13 in the direction of the arrow 5, Figure 2, and, by swinging the frame or
hanger J, has moved the pinion into engagement with the rack g', and the
pinion out of engagement with the rack g. The swinging frame or hanger and
the pinions j,jaro held in the positions just described while the portion of the
cam 12 which is of least radius passes the roller . During the time that the
pinions j, were being shifted into and out of engagement with the respective
racks, as just described, the concentric portions m, m of the cam I have been
passing the rollers h, h, and the rack-bar J has had a short dwell; but as soon as
the pinions j, j have been thus shifted, the cam I¹ commences to act upon the
roller h, and so moves the rack bar J towards the left, as indicated by the arrow G
in Figure 2, at an accelerated and comparatively quick speed. The rack g¹ being
now in engagement with the pinion, the latter is rotated and through the
wheel, pinion f, shaft f, and bevel wheel and pinion f¹, fa, imparts a
corresponding rotation to the shaft H in the direction indicated by the arrow
thereon.
At the termination of its movement in the direction of the arrow 6, the bar J dwells
while the concentric portion m of the can I¹ which has the larger radius passes the
roller hand during this dwell the cam I' moves the rod I³ towards the left hand
of Figure 2, in order to shift the swinging frame or hanger J' and thereby to move
the pinion into engagement with the rack g, and the pinion 1 out of engagement
with the rack g¹. When the pinions j, j' are so moved, the rack bar J is moved
towards the righthand of Figure 2. at an accelerated and comparatively quick
speed. The rack g being now in engagement with the pinion j, the latter is rotated
and through the wheel k, pinion f, shaft fand bevel wheel and pinion f¹, f,
imparts a corresponding rotation to the shaft H in the direction of the arrow shewn
thereon in Figures 2 and 3.
The dwells of the rack-bar J at each end of its movement are to enable the
toothed pinions j, j to be moved into and out of engagement with the racks g, g¹,
and during such dwells of the rack-bar the shaft is stationary and does not
impart any movement to the chains D.
From the above description it will be seen that one rotation of the cam I' produces
a complete circuit of the chains D.
It is of importance that the movements of the chains D and delivery grippers c
should be absolutely synchronous with the speed of the cylinder at the time the
gripper takes the printed sheet, and that the delivery grippers should always have
the same relation to the cylinder grippers E at the time the said cylinder grippers
are raised to release the sheet as shown in Figure 5. On the cylinder B is a
toothed sector or rack n, and on the chain wheel shaft D¹ is a sector n', both of
which are best shewn in Figures 6 and 7 but also in Figure 5. Just at the time
the cam I' has nearly completed the movement of the rack bar J in one direction,
the chains D then having a very slow movement, the sector ell, on one of the
gripper shafts c³, comes into gear with the rack c¹ adjacent to the delivery table C,
and the printed sheet is delivered thereon. Immediately after and when the
chains D are just about to stop, the sector or ruck n, on the cylinder B, comes into
gear with the sector n¹ on the chain wheel shaft D, and the cylinder then carries
the chains along at its own speed until the cylinder grippers have released the
printed sheet and the delivery grippers have taken it. The pin and slot
connection 3, e³, between the loose pinion e and the fast disc c enable such i
forward movement of the chains shafts D' D' and chain wheels D³, D' to be
produced by the cylinder, and the pin moves ahead in the segmental slot e³, but

page_text: just as the cylinder has come to a stop at the line 4.4 and the sector n has moved
out of engagement with the sector n¹, the cam I' has commenced to move the
rack-bar J, and through the intermediate mechanism has-mooved the loose pinion e
ahead, so as to cause the end of the segmental slot to act upon the pin e' and
thereafter the chains D and delivery grippers receive their accelerated movement
from the cam 1 alone until the printed sheet is delivered on the table or board C.
During the time required to transfer the printed sheet from the cylinder to the
receiving table, the cylinder has taken a fresh sheet which has been printed, and
when the chains have completed their circuit the delivery grippers and cylinder
grippers again come to the positions shown in Figure 5 and the printed sheet is
transferred to the delivery grippers to be taken off.
From the foregoing description it will be seen that the delivery grippers take
the sheet when the chains are moving very slowly or stopped after which they
move at an accelerated and comparatively quick speed to "kite" or float the sheet
over the inking apparatus, and finally are slowed down or brought nearly to a
stand-still, to deliver the printed sheet.
In order to support the printed sheet while it is carried by the delivery grippers,
and to prevent its dropping down, I may arrange below the chains D an apron
or tapes K, as shown in Figure 1 and the apron or tapes may be moved by the
passage of the sheet over it, or may have such motion imparted to it that its speed
of movement will be the same as that of the sheet when the sheet reaches it in its
delivery.
The cutting apparatus shewn in Figures 14 to 20 inclusive will now be
described.
As here shewn the apparatus is arranged beneath the feed board B** and after
the paper has been cut it may be delivered by the endless carrier and grippers
above described.
L indicates a fixed or non-rotary bar which is supported by means of arms or
brackets L¹.
As here shewn the said arms or brackets L' are bolted securely to the cylinder-
boxes, and the ends of the bar L are flattened and fit in corresponding U-shaped
bearings o in the arms "L', wherein they are held by pins of or other suitable-
means.
From the bar L arms or hangers L' extend towards the cylinder and support
a rotary shaft L³ which extends lengthwise of the cylinder and parallel therewith.
The full length of the cylinder and the full length of the bar L and shaft L³ are
not here shewn but two hangers or arms L³ may be placed at the ends of the
cylinder and one or more hangers or arms may be arranged between the ends
thereof as shown. A bracket L' is employed at each end of the cylinder to support
the bar L
Upon the shaft L³ is secured a rotary blade or cutter p and said shaft should be
so arranged relatively to the cylinder B that the edge of the rotary cutter p will
barely touch the surface of the cylinder blanket or tympan, and will not cut tho
latter. Adjacent to the cutting edge of the rotary blade p is a stationary cutter
or blade q secured to an arm q' which projects from the bar L. The blade g, shewn
in Figures 16, 17 and 18 is a flat thin strip of steel capable of being introduced
flatwise under the edge of the paper. It is provided with a thin flat shank q
which may be rivetted into it and which is secured by rivets or screws to the
arm q'. In the same vertical plane with the shank q³ is a slot g³, into which the
edge of the rotary cutter p projects, and in conjunction with one side of which
the cutter operates with a shearing action.
The stationary cutter blade q shewn in Figures 19 and 20, is pointed and the
rotary cutter p acts in conjunction with its side.
The stationary cutter or blade is arranged close to or against the cylinder with
its point projecting downwards. As the cylinder B rotates the point of the cutter.
blade-g-or-g*, introduces itself under the paper and lifts it from the cylinder very.
slightly, but sufficiently to hold the paper against the cutting edge of the blade-p

page_text: The two blades or cutters p, q or 9*, act in conjunction to slit or cut the paper,
and this result is attained with a certainty that is impossible where the cutting
is effected by a single knife or cutting disc arranged to press against the paper on
the cylinder.
In order to rotate the knife or cutter p, there may be employed gearing shown
in Figures 14 and 15. The arm or hanger L' employed to support one end of the
shaft L³ not only constitutes a bearing for said shaft, but it is also provided with
bearings for two short shafts 7, 8. On one end of the short shaft is a wheel 1"1
which may be covered with india-rubber or other clastic inaterial and which bears
against the circular bearer at the end of the cylinder, and receives a constant
rotary motion by frictional engagemont therewith. Upon the short shaft, ? is
secured a spur wheel 3, which gears with a pinion s' on the one end of the shaft 8;
and on the opposite end of the said shaft s is a spur wheel 8³, gearing into a
pinion on the shaft L³. By means of the gearing described the rotary cutter ?
is caused to travel in the same direction as the adjacent surface of the cylinder B,
and at a speed faster than that of the cylinder.
In the cylinder B are the usual gripper recesses two being here shown, and
the cylinder blanket or tympan t is confined at the receiving edge of each recess
by the usual tympan bar and grippers 2, 3, as shown in Figure 15 and also in
Figure 16 which represents in detail and on a larger scale a portion of the receiving
edge of the cylinder, and the tympan grippers.
When once the sharp point of the stationary cutter or blade g or q* is introduced
under the sheet of paper at the receiving edge of the cylinder, it will there remain
until the entire sheet is slit or cut in two, but in order to first get said cutter or
blade under the paper the latter must be raised slightly from the cylinder at the
receiving edge of the cylinder, so that the edge of the sheet will pass over and not
under the point of said cutter or blade. This may be effected by attaching little
lumps or projections u to the blanket at the receiving edge and adjacent to those
points where the cutters are to act. Such lumps or projections may be attached
or applied to the ends of the tympan grippers as shown in Figure 15 and whether
they are attached to the blanket, or to the tympan grippers the result will be
substantially the same. The lump or projection u may be formed by a bit
of paper or card-board gummed to the tympan grippers or to the blanket
directly.
The relative arrangement of the cylinder and cutters, 2 g, or q*, will be best
understood from Figures 16 and 17, and 19 and 20.
The lump or projection w, being nearly in range with the point of the blade q
or q*, will hold the sheet of paper v sufficiently away from the cylinder to ensure
the introduction of the cutter q or q*, under it.
When the rotary cutter is made to travel at a higher speed than the 4
peripherical velocity of the cylinder, it will ensure a drawing cut or action of the
said rotary cutter, and hence the cutting is effected smoothly and without tearing
the paper although it is damp and hard to cut.
The direction of rotation of the cylinder B and rotary cutter, 2 are indicated by
arrows in Figures 16 and 19.
Only one pair of blades or cutters p and q or 9*, are shown, but another pair or
other pairs may be arranged along the cylinder and the one pair shown may be
adjusted and secured in any position desired.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I Claim is
4
First. The combination with an impression cylinder capable of rotation in ono
direction only, for printing, and a feed board at the back of the cylinder, of chain-
wheels arranged above and at the front of the cylinder, a receiving table at the further
end of the press, chain wheels adjacent to said receiving table, endless-chains passing i
around said chain-wheels and one or more gripper-bars and gripper rods extending
between and connecting the chains and provided between the chains with gripper

page_text: fingers, said chains being capable of movement in one direction only to take the
printed sheet from the cylinder and carry it over the inking apparatus and to the
receiving table, substantially as herein described.
•
Second. The combination with an impression cylinder, of an endless carrier
provided with delivery grippers arranged at the front of the cylinder and having
an alternately accelerated and retarded movement,- substantially as, and for the
purpose, herein described.
Third. The combination with an impression cylinder, of an endless carrier
provided with two sets of delivery grippers arranged at equi-distant points in the
carrier, the said carrier being arranged at the front of the cylinder and having a
movement which is alternately accelerated and retarded, substantially as, and for
the purpose, herein described."
Fourth. The combination with an impression cylinder, of an endless carrier
provided with delivery grippers and arranged at the front of the cylinder, a shaft
having a uniform speed of rotation, and mechanism substantially such as described
for imparting to said carrier, from said shaft a movement which is alternately
accelerated and retarded, for the purpose herein set forth.
Fifth. The combination with an impression cylinder and its grippers, of an
endless carrier provided with delivery grippers arranged at the front of the
cylinder and having a movement which is alternately accelerated and retarded, and
receiving motion from the cylinder while it is so retarded in order that the cylinder
grippers and the delivery grippers shall be caused to move in proper relation with
each other during the transfer of the sheet from the cylinder grippers to the
delivery grippers substantially as herein described.
Sixth. The combination with an impression cylinder B and an endless carrier
arranged at the front thereof and provided with delivery grippers, of shafts D¹„D³,
wheels D³, D for supporting and operating said carrier, a pinion loose on the
shaft D³, a disc e¹ fast on said shaft and connected with said pinion by a pin and
slot connection, the shaft H having a rotation which is alternately accelerated and,
retarded, and provided with the bevel wheel e and the toothed sectors n n', whereby
motion is imparted from the cylinder to said shaft D¹ when the speed of the carrier
-is-retarded; substantially-as;-and-for-the-purpose, herein described.
Seventh. The combination with an impression cylinder and an endless carrier
arranged at the front thereof and provided with delivery grippers, of shafts D' D'
and wheels for supporting and moving said carrier, an upright shaft geared with
the shaft D³, a horizontal shaft geared with the upright shaft and provided with a
pinion, a reciprocating rack-bar having a variable movement, and a swinging frame
or hanger and wheels, which are alternately moved to impart from the recipro-
cating rack bar, a variable rotary motion to said upright shaft, substantially as
herein-described.
Eighth. The combination with an impression cylinder and an endless carrier
arranged at the front thereof and provided with delivery grippers, of the
shafts D', D', and their wheels D³, D', the upright shaft H geared to the shaft D³,
tho pinion and wheel f, f¹, the shaft f' and pinion f*, the swinging frame J' with
its pinions j. and wheels k, k', the rack bar J provided with racks g, g¹, and a
cam for reciprocating said bar, all substantially as described.
Ninth. The combination with an impression cylinder and an endless carrier
arranged at the front thereof and provided with delivery grippers, of the
shafts D', D³ and their wheels D³ D', the upright shaft H geared to the shaft D³,
the pinion and wheelf, f, the shaft f² and pinion f, the swinging frame J¹ with
its pinions, and wheels k, the rack bar J provided with racks g,g', the rod I³,
and the cams 1¹ 1ª and shaft I, all substantially as described.
Tenth. The combination with the cylinder B provided with the gripper recess B¹,
of the rock shaft E³, the arms E³, E projecting therefrom, the cam E, the gripper
shaft and grippers E!, E, tho.arm E³, and the rod E7 and gripper-closing spring Es,
all substantially as, and for the purpose, described..
-
I

page_text: Eleventh. The combination with the impression cylinder B provided with the
gripper recess B¹, of the rock-shaft E³, the arms E³, E, the cam E³, the gripper
shaft and grippers E¹, E, a spring for closing the grippers, the arm F, and the
cam G all arranged to operate substantially as described.
Twelfth. The combination of an impression cylinder, an endless carrier arranged
in front thereof and provided with delivery grippers and having a movement which
is alternately accelerated and retarded, cylinder grippers, and a gripper shaft
supporting said grippers and having a rocking movement to release the printed
sheet and a bodily movement to withdraw the grippers within the gripper recess,
substantially as herein described.
Thirteenth. The combination with the chains D, of the heads or discs, c connected
with the chains by necks or portions c³, the gripper-shaft c³ journalled in said heads
or discs and provided with the grippers c, the gripper-bar c³ fixed in said heads or
discs and provided with rests c³, the notched hub c³ and catch c³, and the closing
spring, c, all substantially as described.
Fourteenth. The combination with a rotating impression cylinder, of a stationary
blade or cutter arranged close to or against the periphery of the cylinder to be
introduced under the paper thereon, and a rotary blade or cutter for acting on the
paper from the outside thereof and operating in conjunction with said stationary
blade or cutter with a shearing action, substantially as, and for the purpose, herein
described.
Fifteenth. The combination with a rotating impression cylinder, of a stationary
blade or cutter to be introduced under the paper, and a rotary blade or cutter for
acting on the outside of the paper in conjunction with said stationary cutter or
blade and having its rotary motion in the same direction as the adjacent portion of
the cylinder and at a greater speed, substantially as, and for the purpose, herein
described.
Sixteenth. The combination with a rotating impression cylinder, of a stationary
blade to be introduced flatwise under the paper and having a vertical slot, and a
rotary blade or cutter arranged opposite said slot for acting on the outside of
the paper with a shearing action, substantially as, and for the purpose, herein
described.
Seventeenth. The combination with the cylinder A, of the stationary blade
provided with the thin supporting shank c³ and the slot c* both in the same vertical
plane, and the rotary blade or cutter b, substantially as, and for the purpose, herein
described.
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