Improvements in Printing and Bookbinding Machinery.
Year: 1891

page_text: Date of Application, 7th Mar., 1891
Complete Specification Left. 5th Dec., 1891-Accepted, 5th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Printing and Bookbinding Machinery.
I, THOMAS GIBSON of the Feister Printing Co. 35 Snow Hill in the City
of London Engineer, do hereby declare the nature of this invention to be as
follows:-
:―
My invention relates to printing and bookbinding machinery and is designed to
improve the construction of the same.
My said invention relates more especially to machinery or apparatus of that
kind or class described in the Specification accompanying former Letters Patent
granted to Henry P. Feister dated the 11th August 1885 No. 9571 and to
William Robert Lake (a communication from Henry P. Feister) dated the
18th April 1882 No. 1865.
Some of my improvements are however also applicable to other printing machines.
The form-cylinders heretofore in use have been usually fitted with wooden
lagging secured to suitable beds provided with setting up or adjustment screws, and
the plates containing the type or other matter to be printed are secured to this
lagging by means of pins or the like. This is objectionable owing to the said
lagging becoming full of pin holes and otherwise damaged and consequently requiring
frequent renewal and for other reasons.
According to one part of my said invention 1 dispense with the said wooden
lagging, and setting up or adjustment device, and I provide segmental pieces of
metal or other suitable material adapted to be secured in position upon the form
cylinder by means of set screws bolts or by any other convenient means so as to
be readily removable therefrom. I prefer to pass the said bolts through circum-
ferential or longitudinal elongated holes or slots formed in the form cylinder, or I
otherwise provide for the circumferential adjustment of the said segmental pieces to
or from one another. The plates containing the types or other matter or printing
plates are secured in position upon the segmental pieces by means of clamps which
grip the edges of the said plates; the said clamps moreover are attached to the said
segmental pieces by means of screws or bolts, the heads or nuts of which are arranged
to engage in T shaped or other suitable grooves in the said segmental pieces, or
otherwise, and arranged below the printing surfaces of the said plates.
The above mentioned arrangement admits of the matter to be printed by the
form cylinders being very rapidly altered as several sets of the above mentioned
segmental pieces may be provided thus enabling fresh matter to be set up upon a
spare set whilst the machine is in operation.
I sometimes dispense with the segmental pieces and form T shaped or other
suitable grooves in the surface of the form cylinder itself and attach the printing
plates thereto by means of suitable clamps or in any other convenient manner.
Instead of a skeleton or frame to carry the beds and type plates the beds are
preferably carried on a hollow cylinder supported by webs or cross pieces upon a
shaft or arbor. At one end of the form cylinder is a spur wheel attached to the
end of the cylinder by means of bolts passing through circular slots in the wheel.
By this means the wheel is adjustable upon its axis in relation to the cylinder.
At each end of the cylinder is a ring or bearer raised above the level of the part
on which the type is fixed. These bearers may be part of the cylinder itself or be
fitted so as to revolve on the axle.
Instead of constructing the machine with one form cylinder as heretofore I
prefer to employ two form cylinders mounted at a convenient distance apart, and
to so arrange two impression cylinders in combination therewith that the paper or
other material is first delivered to one impression cylinder and printed upon one

page_text: .
side thereof by one form cylinder and subsequently delivered to the other
impression cylinder and printed upon the other side thereof by the other form
cylinder. This arrangement is advantageous in that it enables different sheets to
be printed at the same time and also in that the sheets are handled at the same
edge on both cylinders.
The transfer apron heretofore in use is dispensed with.
A double set of inking devices is employed. The amount of the ink supplied to
the form cylinder can be varied in accordance with the different matter thereon,
and moreover a greater amount of work can be carried out by the machine in a
given time.
According to another part of my said invention I construct the cutting or
perforating device as follows, that is to say, I provide two segments each of which
is mounted upon a shaft or arbor by means of suitable arms or discs in such a
manner as to be adjustable radially to or from the axis thereof. One of the said
segments is adapted to receive a suitable cutting or perforating blade, and the other
is provided with a slit or groove adapted to receive the said blade when the said
segments approach each other as they rotate. To vary the distance between the
cuts I adjust the above mentioned segments to or from their axes, so that the
periphery of the cylinders of which the said segments form part are equal to
the lengths of the pieces of paper or other material to be cut off. The segments
are arranged to rotate constantly at the same speed and are geared by means of
suitable changed wheels or otherwise with the feed rollers so that the surface speed
of the latter is kept the same as the surface speed of the cutting cylinders irrespective
of the radial distance of the said segments from their axis. The shafts or arbors
carrying the said segments are supported in bearings arranged to slide in grooves,
or are otherwise arranged so as to be adjustable to or from each other in accordance
with the radial distance of the said segments from their axis. The said segments are
moreover geared together, or suitable idle wheels or gearing is provided between the
said segments to cause them both to rotate at the same speed irrespective of their
distance apart.
Another part of my invention is with reference to grippers or nippers for
holding or retaining the paper in position. Those hitherto employed in printing
machines of the kind or class hereinbefore referred to are provided with eyes through
which are passed suitable rods or bars, the said grippers or nippers being secured
in position upon the latter by means of set screws or in any other convenient way.
This arrangement is objectionable for the following amongst other reasons, viz.,
should one of the grippers or nippers become damaged or broken, the rod or bar
upon which it is placed must be removed from the machine in order to replace the
said damaged or broken gripper or nipper, thus entailing considerable labour and
loss of time and consequently expense. Moreover should the said damaged broken
gripper or nipper be situated toward the centre of the rod or bar all the other
grippers or nippers thereon at one side of the said broken or damaged one, must be
first removed before the latter could be replaced.
According to my said invention I so construct the said grippers or nippers
that they can be very readily placed in position upon the said rod or bars
or removed therefrom without the necessity for disconnecting the latter from the
machine.
In carrying this part of my said invention into practice, I form the gripper or
nipper in two parts which are joined together by one or more screws in such a way
as to clamp the bar upon which it is carried between them and thereby fix the
gripper upon the bar in any desired position.
I also modify the inking arrangement as follows. In place of three inking
rollers I employ four or more and cover all these with a single hinged clamp in
place of the separate covers hitherto used.
It has been found with practice that the paste fountain as at present constructed
is liable to spread the line of paste and cause it to run into the printed matter;
moreover owing to the construction of the paste fountain it is only capable of being

page_text: used for books of a limited size, thus necessitating the employment of a different
paste fountain for books of widely different dimensions. According to my invention
I provide an improved paste fountain which will not spread the line of paste and
which can be readily altered or adjusted for books of varying dimensions. My
improved paste fountain is capable moreover of containing a much larger supply of
paste than those heretofore in use. In carrying this part of my invention into
practice I place the adjustable plates or blades for regulating the slit or aperture
through which the paste is delivered at a much acuter angle with each other than
has hitherto been done thereby avoiding the rolling contact which occurs when
they are placed at a less acute angle or flatter, and which tends to spread the line
of paste into the printed matter. Moreover I form the body of the said paste
fountain circular or approximately circular in transverse section, instead of square
as heretofore. By forming the ends of the said paste fountain circular & providing
a groove around the circumference I am enabled to secure the bar carrying
fingers or projections for holding or gripping the sheet whilst it is being transferred
from the collecting to the retaining grippers in such a manner that it can be
adjusted around the circumference of the said paste fountain and thus brought as
close as may be desirable to the slit or aperture through which the paste is
delivered, thus rendering one paste fountain suitable for books of widely different
dimensions.
Although I have more particularly described my said improvements as applied
to a printing machine of the kind or class herein before referred to; it is obvious
that the said improvements or some of them are also advantageously applicable to
other printing machines.
1
1 1001
COMPLETE SPECIFICATION.
Improvements in Printing and Bookbinding Machinery
I, THOMAS GIBSON, of the Feister Printing Co., 35 Snow Hill, in the City of
London, do hereby declare the nature of this invention and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement:—
My invention relates to printing and bookbinding machinery and is designed to
improve the construction of the same.
My said invention relates more especially to machinery or apparatus of that
kind or class described in the Specifications accompanying former Letters Patent
granted to Henry P. Feister dated the 11th August 1885, No. 9571, to William
Robert Lake (a communication from Henry P. Feister) dated the 18th April 1882,
No. 1865 and to Henry P. Feister dated the 20th September 1886, No. 11953.
Some of my improvements are however also applicable to other printing machines.
Instead of constructing the machine with one form cylinder as heretofore I
employ two form cylinders mounted at a convenient distance apart, and so arrange
two impression cylinders in combination therewith that the paper or other material
is first delivered to one impression cylinder and printed upon one side thereof by
one form cylinder and subsequently delivered to the other impression cylinder and
printed upon the other side thereof by the other form cylinder. This arrangement
is advantageous in that it enables different sheets to be printed at the same time
and also in that the sheets are handled at the same edge on both cylinders.
The form cylinders heretofore in use have been usually fitted with wooden
lagging secured to suitable beds provided with setting up or adjustment screws,
and the plates containing the type or other matter to be printed are secured to this
lagging by means of pins or the like. This is objectionable owing to the said
lagging becoming full of pin holes and otherwise damaged and consequently
requiring frequent renewal and for other reasons,

page_text: I dispense with the said wooden lagging, and setting up or adjustment device,
and I provide segmental pieces of metal or other suitable material adapted to be
secured in position upon the form cylinder by means of set screws bolts or by any
other convenient means so as to be readily removable therefrom or I make so much
of the periphery of the cylinder as may be desired of segmental pieces supported
on two end plates. I pass the said bolts through circumferential elongated holes
or slots formed in the form cylinder, or I otherwise provide for the circumferential
adjustment of the said segmental pieces to or from one another. The printing
plates are secured in position upon the segmental pieces by means of clamps which
grip the edges of the said plates; the said clamps moreover are attached to the
said segmental pieces by means of screws or bolts; the heads or nuts of which are
arranged to engage in T shaped or other suitable grooves in the said segmental
pieces, or otherwise, and arranged below the printing surfaces of the said plates.
The above mentioned arrangement admits of the matter to be printed by the
form cylinders being very rapidly altered as several sets of the above mentioned
segmental pieces may be provided .thus enabling fresh matter to be set up upon a
spare set whilst the machine is in operation.
At one end of the form cylinder is a spur wheel attached to the end of the
cylinder by means of bolts passing through circular slots in the wheel. By this
means the wheel is adjustable upon its axis in relation to the cylinder.
At each end of the cylinder is a ring or bearer raised above the level of the
part on which the type is fixed. These bearers may be part of the cylinder itself
or be fitted so as to revolve on the axle.
The transfer apron heretofore in use is dispensed with.
The cutting or perforating device I construct as follows:-I provide two
segments each of which is mounted upon a shaft or arbor by means of suitable arms
or discs in such a manner as to be adjustable radially to or from the axis thereof.
One of the said segments is adapted to receive a suitable cutting or perforating
blade, and the other is provided with a slit or groove adapted to receive the said
blade when the said segments approach each other as they rotate. To vary the
distance between the cuts I adjust the above mentioned segments to or from their
axes, so that the periphery of the cylinders of which the said segments form part
are equal to the lengths of the pieces of paper or other material to be cut off.
segments are arranged to rotate constantly at the same speed and are geared by
means of suitable change wheels or otherwise with the feed rollers so that the
surface speed of the latter is kept the same as the surface speed of the cutting
cylinders irrespective of the radial distance of the said segments from their axis.
The
The shafts or arbors carrying the said segments are supported in bearings
arranged to slide in grooves, or are otherwise arranged so as to be adjustable to or
from each other in accordance with the radial distance of the said segments from
their axis. The said segments are moreover geared together, or suitable idle
wheels or gearing is provided between the said segments to cause them both to
rotate at the same speed irrespective of their distance apart.
The grippers or nippers hitherto employed for holding or retaining the paper in
printing machines of the kind or class hereinbefore referred to are provided with
eyes through which are passed suitable rods or bars, the said grippers or nippers
being secured in position upon the latter by means of set screws or in any other
convenient way.
This arrangement is objectionable for the following amongst
other reasons:-vz., should one of the grippers or nippers become damaged or
broken the rod or bar upon which it is placed must be removed from the machine
in order to replace the said damaged or broken gripper or nipper, thus entailing
considerable labour and loss of time and consequently expense. Moreover should
the said damaged or broken gripper or nipper be situated toward the centre of the
rod or bar all the other grippers or nippers thereon at one side of the said broken
or damaged gripper or nipper must be first removed before the latter one could be
replaced.
I so construct the said grippers or nippers that they can be very readily placed

page_text: in position upon the said rod or bars or removed therefrom without the necessity
for disconnecting the latter from the machine.
In carrying this part of my invention into practice I form the gripper or nipper
in two parts which are joined together by one or more screws in such a way as to
clamp the bar upon which it is carried between them and thereby fix the gripper
upon the bar in any desired position.
It has been found with practice that the paste fountain as at present constructed
is liable to spread the line of paste and cause it to run into the printed matter;
moreover owing to the construction of the paste fountain it is only capable of being
used for books of a limited size, thus necessitating the employment of a different
paste fountain for books of widely different dimensions. According to my inven-
tion I provide an improved paste fountain which will not spread the line of paste
and which can be readily altered or adjusted for books of varying dimensions. My
improved paste fountain is capable moreover of containing a much larger supply of
paste than those heretofore in use. In carrying this part of my invention into practice
I place the adjustable plates or blades for regulating the slit or aperture through
which the paste is delivered at a much acuter angle with each other than has
hitherto been done thereby avoiding the rolling contact which occurs when they
are placed at a more acute angle or flatter, and which tends to spread the line of
paste into the printed matter. Moreover I form the body of the said paste
fountain circular or approximately circular in transverse section, instead of square
as heretofore. By forming the ends of the said paste fountain circular and pro-
viding a T groove around the circumference I am enabled to secure the bar
carrying the fingers or projections for holding or gripping the sheet whilst it is
being transferred from the collecting to the retaining grippers in such a manner
that it can be adjusted around the circumference of the said paste fountain and
thus brought as close as may be desirable to the slit or aperture through which the
paste is delivered, thus rendering one paste fountain suitable for books of widely
different dimensions.
Although I have more particularly described my said improvements as applied
to a printing machine of the. kind or class herein before referred to, it is obvious
that the said improvements or some of them are also advantageously applicable to
other printing machines.
Figure 1 is a diagram longitudinal section of the machine shewing the position of
most of its parts.
Figure 2 is a transverse section of the cylinder that carries the cutting blades.
Figure 3 is a longitudinal section of one end of the same.
Figure 4 is a transverse section of the female cutting cylinder.
Figure 5 is an elevation of a portion of one end of one of the segments.
Figure 6 is a side view and Figure 7 an edge view of the gauge used for setting
the cutting segments at the required distance from the shafts of the cutting
cylinders.
Figure 8 is a longitudinal section on a larger scale than Figure 1 of a portion of
the machine shewing the cutting cylinders the rollers for feeding forward the web
paper and the mechanism for detaching one sheet from the next.
of
Figure 9 is a front elevation of the same.
Figure 10 is a section shewing one of the segments of each of the two impression
cylinders.
Figure 11 is a back view of one of the segments.
Figure 12 is a section of one of the segments shewing a modified way of giving a
slow travelling movement to its canvas covering.
Figure 13 is a back view of a portion of this segment.
Figure 14 is a cross section, Figure 15 a longitudinal section of one of the form
cylinders, Figure 16 is a face view of one of its removable segments.
Figure 17 is a cross section on a larger scale of one of the segments, Figure 18 is
a face view of one end of the same.

page_text: Figures 19 are sections of one of the screws and nuts used for pressing the
clamping bars of the segments against the edges of the printing plates.
Figure 20 is a plan of the nut.
Figures 21 and 22 are cross sections of the pasting cylinder.
A A' are the two form cylinders to which the printing plates are attached.
B B are the two impression cylinders. CC are the cutting cylinders D D
and DD' are the pairs of rolls for feeding forward the web of paper-one pair D D
E is
in front of the cutting segments and the other pair D' D' in rear of them.
the axis which carries a series of radial detacher pins which serve to nip the paper
between their own forward ends and the circumference of the impression cylinder B
and as they and the impression cylinder travel faster than the paper is fed forward
they then detach from the end of the web of paper the sheet which has been
partially severed off by the cutting blade of the cutting cylinders. F are the
inking rollers for inking the plates on the form cylinder A and F the rollers for
inking the plates on the form cylinder A'. G is the roller on which the several
sheets printed at each revolution of the form cylinders are collected one above the
other. His the paste roller for applying a line of paste across the centre of each
sheet as it is being carried round by the collecting roller G.
The construction of the cutting cylinders is shewn at Figures 2 to 5.
There are two segment bars C parallel with and on opposite sides of the axis C₁
by which they are carried. At each end the bars are secured to collars (2 fixed
on the axis C. Each bar at its end is for this purpose formed with an arm C×
extending from it. Each collar has projecting from its face two straight parallel
projections C³. The arm C× of one bar C is bolted by a bolt C to one of these
projections and the arm of the other bar C is bolted by another bolt to the
other projection. The heads of the bolts are received in T headed slots formed
lengthwise of the arms so that the bars C can be moved towards or away from the
axis C¹ and locked at any desired distance from them.
To facilitate the setting of the two bars at equal distances from the axis C¹ a
gauge shewn at Figures 6 and 7 is used. At its centre the gauge bar is formed to
fit to the axis C¹ as shewn. Each end carries a sliding block which can be slidden
along and set to any desired line of a scale marked upon the bar and then clamped
to the bar by a clamping screw. Each bar C near each of its ends has a pin C
projecting from it as shewn at Figure 5. To set the ends of the segment bars Cat
the desired distance from their axis C¹ the gauge bar is held against the axis C¹
and the bars are moved outwards until the pins C come against the blocks of the
gauge bar.
The segment bars C have each a longitudinal groove formed in them. The
groove of each female cutting segment receives and has fixed within it the wearing
portion as shewn at Figure 4. The groove in each male cutting segment has fixed
within it a T shaped bar Co to the stem of which the cutting blade C' is secured.
On each side of the blade is a sliding bar C8 pressed outwards by coiled springs C³.
Each spring C surrounds a screw pin C10 which serves not only to hold the bar C
to the bottom of the groove in the bar C but also to restrain the bars CB from
being pressed outwards too far from the groove in the bar C.
The way in which the cutting cylinders are driven is shewn at Figure 8. This
figure also shows how that the bearings of the axes of the cutting cylinders can be
moved towards or away from one another according as the distance of the segments
from their axes is increased or diminished. A spur wheel B' on the shaft of the
impression cylinder B and of the same diameter as this cylinder drives a toothed
wheel H. A change wheel H' on the axis of this wheel gives motion to a pinion H'
which gears with a pinion H³ that drives a pinion Cxx on the axis of the lower
cutting cylinder C.
The upper cutting cylinder is similarly driven from the pinion H³ through an
intermediate pinion H.
Two change wheels H¹ are provided of different diameters-with the smaller one

page_text: the cutting cylinder is driven at a ratio of 4 to 1 of impression cylinder-with the
larger one the ratio is 5 to 1 and as the cutting cylinders cut twice for each
revolution-one would furnish 8 cut sheets for each revolution of the impression
cylinder and the other 10 sheets.
The lower roller of each pair of feed rollers D D' is driven by a pinion D² which
gears into a change wheel C*** on the axis of the lower cutting cylinder. The
upper and lower rollers of each pair gear together so that they always revolve at
the same speed.
The size of each of the 8 or 10 sheets cut at each revolution of the impression
cylinder will depend upon the diameter of the cutting cylinders; they can be set to
any diameter required. The surface speed of the feed rollers has to be the same
as that of the cutting cylinders-a number of wheels C*** of different diameters
are therefore provided- one for each of the several speeds required.
The partially severed web of paper as it passes from the feed rollers D' is
conveyed by tapes I on to a guide plate J which conducts it on to the surface of
the impression cylinder-just as the foremost end of the web passes beyond the end
of this guide plate the ends of detacher rods E' carried by the axis E come against
the paper and nip it between themselves and one of the rigid cross bars B3 of the
impression cylinder see Figures 10 to 13 and drag away the foremost sheet com-
pleting its severance from the remainder of the web the partial line of severance
previously formed across the sheet being then at some point between the feed
rollers Di and guide plate J.
At the same time grippers B carried by a gripper bar B see Figures 10 to 13
are allowed to close down on to the foremost edge of the paper and nip it between
themselves and the bar B³ and so carry forward the severed sheet on the impression
cylinder. The grippers are closed by springs acting against arms on the bar Ba
and are opened at the required times by an arm on the bar coming against a fixed
cam projection in the ordinary manner.
As it is necessary that the line of partial severance across the paper shall have
passed the feed rollers D' before the severance is made complete and that whatever
be the size of sheet that is being printed there shall only be one such partial line of
severance between the feed rollers D' and the detacher rods E' the whole of the
feed and cutting rollers and the gearing which drives them is carried by a frame
which can be moved towards or away from the detacher and fixed to the main
frame in any desired position.
The construction of the impression cylinder is shewn at Figures 10 and 11—a
nodification is shewn at Figures 12 and 13.
When 8 sheets are being printed the circumference of each impression cylinder
has affixed to it parallel with its axis and at equal distances apart around its
circumference eight metal beds B. These beds at their ends rest against and are
bolted to the periphery of discs or wheels on the axis of the impression cylinder.
Each metal bed has also bolted to it near the ends of its foremost side a bar B³-
distance pieces being interposed between them at the ends so that in the centre
there is a narrow space between the side of the bed and the bar. The bars carry
bearings for the finger or gripper bars B and the fingers themselves close down on
to the bars' outer edges. Each metal bed B' carries on its inner side 4 rollers.
Two of these B have secured to them the ends of a thick sheet or blanket B' of
elastic material which is led over the outer surface of the bed. The rollers can be
turned from their ends in opposite directions and the blanket so stretched over the
bed and can be retained in its stretched condition by pawls engaging with ratchet
wheels fast on the rollers. Outside the blanket is a canvas sheet B8 similarly
secured at its ends to rollers B. On the first impression cylinder B there are
ratchet wheels on the rollers and pawls to retain these wheels from turning back
after they have been turned to wind the canvas on to themselves and so keep the
canvas taut.
On the second impression cylinder B' means are provided for slowly and con-
tinuously winding the canvas off from one roller and onto the other so that the

page_text: canvas coverings of the blankets on this cylinder which receive more or less "set
off" from the printed sides of the sheets which rest against them may gradually
and continuously be replaced by fresh clean canvas coverings.
In the construction shown at Figures 10 and 11 this is effected by impeding one
roller from turning too freely by a spring friction brake B and by turning the
other a short distance each time that the fingers B* open. An arm B₁ on the
shaft B which carries the fingers is at each movement of the fingers caused to
strike against a lever B and rock this lever-the lever carries a pawl which
engages with a ratchet wheel B³ that can turn loosely around the roller B. In
this way a slow revolving movement is given to the ratchet wheel. As the ratchet
wheel is revolved a pin B3 which projects out from its side comes against and rocks
a lever B¹³ which by another pawl gives a slow revolving motion to a ratchet
wheel B16 which is fast on the roller B. Another pawl B" engaging with the
ratchet wheel prevents it turning in the opposite direction.
In the modification shown at Figures 12 and 13 an arm Bx on the gripper
bar B₁ is each time that the grippers are opened caused to strike against one end of
a rod B18 and move it endwise. The other end of the rod is jointed to a lever B¹
which is free to turn round the axis of a ratchet wheel B. The lever carries a
pawl B2 which engages with the ratchet wheel and gives to this axis a slow
revolving motion as the lever is rocked to and fro. On the axis of the ratchet
wheel is a pinion B" which engages with a pinion B23 on the axis of a worm B".
The worm B² is made to gear with a worm wheel 132 on the roller B' and so gives
a slow revolving motion to this roller and causes it to wind the canvas on to itself
and to unwind it from the other roller B°.
The way in which I make provision for being able to remove any one or other of
the several grippers on any gripper bar is shewn at Figures 10 and 12. The boss
of each gripper is made in two halves-with projections standing out from each on
opposite sides of the finger bar. On one side a projection B2 on one half of the
boss is made to fit to and overhang a projection B on the other half. On the
other side of the axis the projections on the two halves are drawn together by a
screw bolt B28 and the two halves are so made to grip the bar between them and
are thereby locked to it. By taking out the bolt B2 and slipping the two halves of
the boss endwise in opposite directions the gripper can readily be removed from
the bar and be as readily replaced by a fresh one.
The construction of the form cylinder is shewn at Figures 14 to 20.
The cylinder is composed of two end wheels A2 which have each a circumferential
flange A projecting outwards around them and are stayed together at intervals
near their circumference by stays A. The remainder of the circumference of the
cylinder is composed of removable seginents A'. These at their ends rest upon the
circumference of the cylinder and are secured to it by bolts A. Each segment is
provided with removable eye-bolts A' by which it can be lifted from the
cylinder.
Each segment has parallel undercut grooves A³ formed along it into which fit
projections A on a series of clamp bars A which are at right angles to the
grooves A. The sides of the clamp bars are undercut, the printing plates formed
with correspondingly sloping sides are placed between the clamp bars and are held
to the cylinder by the clamp bars overlapping their edges and are clamped and
held tightly by the last clamp bar at one end of the segment being forced towards
the opposite end of the segment by the head of a bolt A being made to bear
against it. This bolt as shown at Figure 19 screws into a nut A¹-the nut is fixed
in the required position to the circumference of the cylinder by a screw A. A" is
a lock nut on the bolt A" to lock it when it has been screwed up.
The way in which the several sheets printed at each revolution of the form and
impression cylinders are collected one above the other on the collecting roller G
and then all simultaneously delivered from this roller is the same as described in
the Specification of my before mentioned Patent No. 11953 of 1886. The collecting
roller is driven by a pinion on its axis gearing into an intermediate pinion driven

page_text: by a toothed wheel on the axis of the impression cylinder B.
When 10 sheets are
being printed instead of 8 the size of the pinion on the axis of the collecting roller
would be altered or intermediate gearing be provided for this purpose so that it
should make 10 revolutions instead of 8 for each revolution of the impression
cylinder.
The fly or detacher K would be driven just in the same way as described in the
Specification of Patent before mentioned No. 119538.
The paste cylinder always revolves at the same speed as the collecting cylinder.
The way in which I now construct the pasting cylinder H is shewn at Figures 21
and 22.
As will be seen 1 make the paste reservoir in such manner as to surround the
shaft which carries it.
The bearings Hin which the pin bar is carried are secured to the exterior of
the reservoir by bolts.
Around the ends of the exterior of this reservoir are T grooves in which are
received the heads of these bolts so that the pin bar may be set nearer to or further
from the mouth of the reservoir according to the size of sheet that is being printed
or the pin bar may if so desired be adjusted in circular grooves made in the sides
of the bearers at the ends of the paste fountain.
The pins on the bar are as heretofore for holding or gripping the sheet as the
grippers of the collecting cylinder momentarily release their hold of the sheets.
The paste roller H2 is made of smaller diameter than heretofore-this I am able
to do by supporting it at intervals by fixed cross ribs or bearers H³ extending
across the paste delivery opening of the reservoir. At its ends the roller is carried
in bearings which can be adjusted towards or from the axis of the paste reservoir
as may be desired.
The roller being of smaller diameter-the scrapers H* which prevent too much
paste being carried out by the paste roller can be set at a much acuter angle to
one another than heretofore.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The construction of cylinder printing machinery substantially as herein before
described and illustrated in the drawings annexed to adapt them to print sheets of
different sizes.
2. The combination of the four cylinders A A' B B each impression
cylinder B B having across it at equal distances apart around its circumference
lines of grippers and cam surfaces for opening the grippers and allowing them to
close in such manner that the forward edge of each sheet of paper fed on to the
first pression cylinder is seized by a line of grippers on that cylinder and the
sheet brought into contact with a printing plate on the first form cylinder then
the forward edge of the sheet of paper is seized by a line of grippers on the second
impression cylinder at the same time that it is released from the grippers of the
first and the sheet then carried by the second impression cylinder into contact with
a printing plate on the second form cylinder.
3. The combination of mechanism for feeding sheets of paper to printing
machines, consisting of two pairs of rollers for feeding forward a continuous web of
paper a pair of cutting cylinders or segments between the pairs of feed rolls-
detaching gripping mechanism which takes hold of the forward edge of the
at a time when a partial line of severance formed across the paper by the cutting
paper
segments has passed beyond the second pair of feed rolls and then moves away from
these rollers at a higher speed than the paper is being fed forwards by them and
thereby completes the severance of the sheet of
paper.
4. Mechanism for cutting a continuous web of paper into sheets consisting of
segment bars carried by and parallel with parallel revolving axes-the bar or bars
on one axis carrying a cutting blade and the bar or bars on the other having a
B

page_text: narrow slit formed in them for the knife to enter-and the bars movable radially
towards or from their axes and capable of being locked at different distances from
them and the bearings for the axis also capable of being moved towards or from
one another so that they may always be retained at such a distance apart that the
knife on a bar carried by one shall enter the slit in a bar carried by the
other.
5. The combination of the two pairs of feed rolls-the cutting cylinders between
the pairs of rolls for partially dividing into sheets a web of paper fed forward by
the feed rolls and gripper rods carried by a revolving axis which grip the forward
edge of each sheet against a cylinder which is revolving at a higher surface speed
than the feed rolls and grippers upon the revolving cylinder which then take hold
of the forward end of the sheet and hold it to the cylinder.
6. The impression cylinder carrying at equal distances apart around its circum-
ference removable beds which pass across it from one side to the other-the outer
surface of each bed covered with thick blanket which at its ends is secured to two
rollers at the back of the bed and means for turning these rollers to wind up and
stretch the blanket and for preventing the rollers from turning back and allowing
the blanket to slacken and with canvas covering attached at its end to other rollers
at the back of the bed-one impeded by friction from revolving too freely--the
other caused to revolve slowly and wind canvas onto itself.
7. The form cylinder with removable beds at equal distances apart around its
circumference each bed having undercut grooves formed longitudinally in its
outer face and having bars lying across it each bar having projections upon it
which enter and fit into the undercut grooves-and the sides of the bars being
undercut so that they may overlap the sides of printing plates placed on the bed
and hold the plates.
8. The form cylinder with removable beds at equal distances apart around its
circumference and having a projecting flange around it at each of its ends for the
impression cylinder to bear against.
9. The construction of the pasting cylinder substantially as herein before
described with the pin bar which it carries capable of being set nearer to or further
from the slit through which paste is delivered.
10. The construction of the grippers in two halves substantially as described so
that any gripper in a row of grippers can be removed from the axis which carries it
without interfering with the others.
Dated this 5th day of December 1801
CARPMAEL & Co.,
Agents for the Applicant.