Improvements in Rotary Printing Machines.
Year: 1891

page_text: Date of Application, 20th July, 1891
Complete Specification Left, 30th Mar., 1892-Accepted, 7th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in Rotary Printing Machines.
I, JULES MICHAUD, of 96 Rue d'Assas, Paris, France, Engineer, do hereby
declare the nature of this invention to be as follows:-
The present invention relates to improvements applicable to rotary printing
machines generally. I shall proceed to describe such improvements as applied to
different arrangements of machines for colour printing; they may be applied
irrespective of the number of printing cylinders employed.
Fig. 1 is a general view in elevation of the whole machine.
Fig. 2 is a side elevation of a modification of the means employed for delivering
a packet or pile of sheets.
Fig. 3 is a side elevation and Fig. 4 an end view of a further arrangement for
delivering packets or piles of sheets.
the
Fig. 5 is an elevation of the means employed for ensuring the regular feed of
paper from the reel, and
Fig. 6 is a similar view of a modified form of such means.
Fig. 7 is a side elevation of an arrangement for increasing the output of a
machine for printing works or publications part of the pages of which require to be
printed in one colour only, and the remainder in several colours.
Fig. 8 is a side elevation of a modified form of the machine shown in Fig. 7.
Fig. 9 is a plan view and Fig. 10 an end elevation of a further modification of
the machine shown in Fig. 7.
Fig. 11 is a side elevation showing another arrangement of cylinders producing
impressions in one colour only.
Fig. 12 is a side elevation of a modified form of the machine shown in Fig. 11,
and in which a single reel only of paper is employed.
Fig. 13 is a side elevation of a machine showing suitable means for obtaining a
correct register of the impressions produced by the different printing cylinders, and
also means for preventing off-set or blurring of the printed sheets.
Fig. 14 is a side elevation of the means employed for drying the sheets after
they have received all the impressions.
1, 2, 3, 4, 5, are the blanket or impression cylinders; 6, 7, 8, 9, 10, 11, 12, 13, are
the printing cylinders. Each of the latter is provided with an inking apparatus;
14, 15, 16, are the cutting and folding cylinders.
Blanket cylinder 1 prints one side of a sheet in two colours by contact with the
printing cylinders 7, and 6; the others serve for printing the other side of the
sheet.
I have shown 4 blanket cylinders 2, 3, 4, 5, for the second side of the sheet, but
there may be more, and to each I may apply one or more printing cylinders, but,
no matter what the number of these cylinders, as shown in Fig. 1, I arrange them
so that by means of the space left between them each cylinder may be reached and
the blanket readily removed, and the make-ready effected with ease.
The printing cylinders being outside the line formed by the paper passing round
the blanket cylinders, these operations will in no way be interfered with.
The result of this arrangement of cylinders and the manner in which the paper
travels, is that the removal of the blankets and the make-ready may be effected on
the cylinders for printing the second side of the sheet and for colour printing,
without having to cut the paper.
The reel of paper to be printed is shown at 17; 18 is a reel of paper for the

page_text: off-set, the object of which is, by its interposition between the blankets of
cylinders 2, 3, 4, 5, and the printed sheet, to prevent the soiling of the blankets on
such cylinders.
The web of off-set paper is rewound on spindle 19 under the action of the
rollers 20, 21; an examination of Fig. 1, will show that by this arrangement the 5
off-set web as well as the web to be printed can remain engaged in the machine and
have no need to be cut to enable the make-ready to be effected on the blanket
cylinders 2, 3, 4, 5, nor for changing the blanket.
As the roll 19 increases in diameter the spindle on which the off-set web is
rewound ascends between two guides of which the one 22 is movable to facilitate 1
the removal of the roll. The movable part 22 can be raised and brought to the
position 22'; 23 is a screw or bolt by loosening which this can be effected.
In the case where the employment of an off-set web is not indispensable I may
apply cleaning rollers 60 to each of the blanket cylinders, such rollers, either coated
with paraffin or not, serving to clean the blankets.
the
1
The printed sheets are cut and folded by the cylinders 14, 15, 16, and are then
received by the flyers 24; 25 is an endless web of linen, leather belt, or metallic
sheet passing over two rollers 26, 27; pins or stops 28, 281, etc., are fixed to this
strap or web, and are the same distance apart as the size of the folded sheet;
parts 29 which correspond with recesses made in the rollers 26, 27, ensure the strap 2
being carried forward, but this may be effected by any other suitable means. By
means of the mechanism consisting of the cam 30, lever 31, connecting rod 32, the
pawl lever 33, pawl 34 and the ratchet 35, for a given number of revolutions of the
printing cylinders I obtain a forward travel of the web equal to the length of
the sheet, such travel occurring between two movements of the flyers, whereby the
packet or pile of sheets previously received advances from 36 to 37, where it may
be readily removed, and which pile consists of a given number of sheets.
Figs. 2, 3 and 4 show two other arrangements for obtaining the same result.
In Fig. 2, 38 is a prism each side of which is equal to the size of the sheet; on
one of its faces it receives a given number of sheets and when such number is
attained it is turned by means of the same mechanism as previously described, to the
position to present a new face to the flyers.
In Figs. 3 and 4 the sheets are delivered on to a table 39, through hollow spaces
or recesses in which pass rods 40 attached to levers 41 and supported by a bar 42 on
which they slide; the levers 41 are keyed to a shaft and have an oscillating move-
ment imparted to them by cam 47 through the intermediary of lever 46 and
connecting rod 45.
The levers being in the position 41, when the desired number of sheets is received
at 49, the cam acts and the levers are moved to 41'.
The rods 40 are connected together by a stop 51; they are raised and carry
forward the packet or pile which has been received, carry same to 50 and then
return to their original position before the flyers descend again; a stop 52 prevents
the paper being forced too far forward.
In all rotary machines in general and particularly in that class to which the
present invention is specially applicable, it is of very great importance to ensure a
regular travel of the paper no matter what resistance is offered by the breaks to
the unwinding of the reels. In machines as at present constructed it may happen
that at a given moment the blanket cylinders all cease to bear on the printing
cylinders, and that then a slipping of the paper may occur which may produce a
failure in either the register of the impressions on the opposite sides of the sheet,
or in the register of the different colours. In this case the balls bearing against
the cylinders or rollers in the blank or white parts may not prove sufficient to
prevent such slipping.
I ensure the feed of the paper from the reel not only by rollers and balls and by
the pressure of the printing cylinders on the blanket cylinders, which pressure is
necessarily intermittent on account of the spaces between the printing plates, but
by the pressure before any impression of a roller clothed with india rubber or other

page_text: suitable substance, and even by the pressure of an unclothed roller, against a
cylinder travelling at exactly the same speed as the circumference of the blanket
cylinders.
This arrangement is shown in Figs. 5 and 6. In Fig. 5 a roller 53, made of a
yielding material or not, turns in contact with the blanket cylinder 1 against which
it can be caused to bear, the bearings or blocks in which it is mounted being
movable. A second roller 54 bears against the former and it is between this rolle:
and roller 55, which may be of yielding material or not, that the paper passes; the
rollers 54 and 55 being also mounted in movable bearings, by these means I obtain
between the rollers 53, 54, 55, sufficient pressure to ensure the travel of the paper
at exactly the same speed as that of cylinder 1, as it is this cylinder which drives
the rollers.
So as to avoid the stoppage which might occur in the travel of the paper at the
moment when the roller 53 passes over the gaps made in cylinder 1, I take care to
place this roller in contact with the cylinder so that at the moment when the gaps
pass under same, the printing plates on cylinder 6 are pressing against the cylinder 1
and ensure the feed of the paper.
I may effect the same result by placing the roller in contact with two rollers 53
and 53 bearing on the blanket cylinder as shown in Fig. 6, such rollers 53 and 53¹
being arranged so that when one is opposite the gap the other bears against the
cylinder.
By means of either of these arrangements the paper is fed forward with great
regularity and the creasing of the paper which always occurs during the passage of
the gaps of the cylinders when the feed of the paper is effected by pressing it
directly against the blanket cylinder, is avoided.
In Fig. 1 another arrangement is shown for producing the same result. 55 is a
roller driven by gearing and revolving at a surface speed exactly equal to that of
the printing cylinders; against this roller bears another roller 56, which may be
of yielding material or not; in this case the pressure on the paper between the
two rollers always remains constant. This method of feeding the paper is
employed in machines for printing sheets of different sizes, but it may happen that
by reason of very slight variations in the covering of the blanket cylinder, the
speed of roller 55 does not exactly correspond with the surface speed of the blanket
cylinder, which might produce either an advance or a delay in the unwinding and
consequently cause the paper to break or impair the register. In order to avoid
this difficulty between the blanket cylinder 1 and the roller 55, I place a roller 57
mounted on spring supports. If roller 55 supplies too much paper, the spring of
roller 57 ensures the proper tension by raising this roller; if on the contrary
roller 55 does not supply sufficient paper, roller 57 will be lowered, the paper
compressing the spring; the breaking of the paper is thus avoided while its regular
feed is ensured.
The machine above described is constructed so as to be able to print one side of
all the pages of a work or publication in two colours and the other side of all the
pages of such work in six colours.
It may happen that only a part of the pages of a work or publication requires
to be printed in several colours, the remainder being in oue colour only.
Suppose, for example, that a publication has 8 pages and that there are only
4 pages of one side to be printed in one colour only and two pages of the other to
be printed in 4 colours, the two other pages of this same side being printed in one
colour only.
If the cylinders of the machine carry on their surface four pages of the publica-
tion, it will be seen that in this case there will only be one half of the surface of
the cylinders to produce the printing in colours which will be utilized. I have
therefore invented the arrangement shown in Fig. 7 which enables me to double
the output of the machine without increasing its speed, by utilizing the whole of
the surface of the cylinders for printing in colours to make the impressions in
colours twice.

page_text: To obtain this result I add a second reel 77 and two sets of cylinders 73, 74, 75, 76,
for producing the pages which are to be in black or in one colour only, twice.
Suppose, for example, that the work being an 8 page publication, only the
pages 1 to 8 are to be printed in several colours on one side, the other side of these
pages, that is to say the pages 2 and 7, having to be printed in one colour only
and all the other pages the same, that is to say pages 3, 4, 5 and 6 being also in
one colour only.
I then place two printing plates of each of the pages 2 and 7 cn cylinder 62,
then in succession two printing plates of each of the colours for pages 1 and 8 on
the cylinders 65, 66, 68 and 69.
I then place on the printing cylinders 73 and 76 two printing plates of each of
the pages 3, 4, 5 and 6 and I cause the paper from the two reels 61 and 77 to pass
as shown in Fig. 7.
For each revolution of the printing cylinders I thus obtain twice four pages,
that is to say twice the pages 1, 2, 7 and 8, and twice the pages 3, 4, 5, and 6, and
by providing two cutting apparatus and two folding apparatus on the cylinders 70
and 71, it will be seen that the two parts of four pages will be inserted in each
other and folded together; the output is thus doubled without increasing either the
speed, the number of inking apparatus for the colours, nor the number of colour
distributing rollers.
It will be seen that if the publication has 12 pages of which 10 are in one colour
only, I may, by adding another set of printing cylinders and a third reel, produce
not only twice 8 pages per revolution of the cylinders but twice 12 pages.
I might obtain the same result for publications of 12 pages by doubling the
diameter of the cylinders 73, 74, 75, 76, and causing them to still make the same
number of revolutions as the cylinders printing the colours; the surface speed
being doubled they will then print twice 8 pages, and I should give one fold to
these parts of 8 pages, and then direct them by a set of tapes to join and receive a
last fold with the 4 pages printed in colours.
This arrangement presents very great advantages:-
The adjustment of the colour inking apparatus,
The adjustinent of the colour distributing rollers,
The cleaning of these rollers, and
The loss of ink resulting from such cleaning, will be the same as in the original
machine although the output will be doubled.
Fig. 8 shows another arrangement of machine for producing the same result, in
which arrangement the set of cylinders belonging to reel 79 is arranged at the
delivery end of the machine instead of the opposite end thereof.
Figs. 9 and 10 illustrate another arrangement; the original machine is shown
at 80 in plan in Fig. 9 and in end elevation in Fig. 10; the real is at 81, the
delivery at 82, the auxiliary cylinders have their axes perpendicular to those of the
cylinders of the original machine described. The web from the reel 83 having
been printed once is caused to turn over the bar 84 which then enables it to be
superposed on the other web as in the preceding cases.
The different arrangements above described and those which are hereinafter
described may be employed irrespective of the number of printing cylinders with
which the machine is provided.
In Fig. 11 I have shown another arrangement of cylinders producing impressions
in one colour only.
The machine shown in this fig. like those shown in Figs. 7 and 8 is intended for
printing colours on one side and a single colour on the other side of a sheet, but
the arrangement might be exactly the same for a machine to produce any other
number of impressions.
In the machine shown in Fig. 11 the additional cylinders are introduced in the
machine itself, instead of forming a set separated therefrom.
The two reels instead of being placed on the same side or end of the machine
might be arranged one at one side and one at the other,

page_text: This arrangement enables the space occupied by the machine to be diminished,
but it has, however, the disadvantage of rendering the machine less easy to prepare.
A flooring must be placed over the paper proceeding from the reel 87 in order to
permit access to the interior of the machine for the purpose of making ready or
changing the blankets.
I may further construct the machine in the form shown in Fig. 7, that is to say
without employing a second reel and the cylinders belonging thereto, but making
the printing cylinders 62 and 69 of a length double that of the other cylinders, the
blanket cylinders 63 and 67 being of a corresponding length.
The reel is separated into two webs by the disc 88, one of such bands being
printed on one side by cylinder 62, then on the other by cylinders 65, 66, 68, 69.
The other web having been first printed by cylinder 62, passes over the roller 89
to cylinder 67 on which it is printed on the other side by cylinder 69, passes over
roller 90, on to the displacing apparatus 91, over roller 92 and is superposed on the
first web between the cutters and folders 70 and 71. The displacing apparatus
referred to is described in the Specification of my Patent No. 20001 dated
8th December 1890.
It will be seen that by suitably arranging the formes I shall obtain the same
result as in the preceding cases.
I I may also construct a machine of this description so as to produce any desired
number of colours, either on one side only or on both sides.
I may also employ more than four printing plates in the direction of the
development of the cylinders.
I may further increase the number of sets of printing cylinders and the number
of reels employed in a single machine.
The folding apparatus may be modified so as to give a greater number of folds,
or folds in different directions.
From the combination of these elements which may be varied in themselves, or
vary in the manner of combining them together, it results that on a machine, the
novel action of which will be apparent from the above description and from the
accompanying drawings, I am able to print and fold publications composed of a
certain number of sheets which are superposed and folded together and which
have one or more pages printed in colours, so as to effect economy in the time and
in the colours employed.
I may by using a modified form of the machine shown in Fig. 11, and which is
shown in Fig. 12, only employ a single reel and utilize the whole or part of the
additional cylinders 73, 74, 75, 76, to increase the number of impressions on the
paper from such reel.
If I vary the direction of rotation of a part of the printing cylinders and the
direction of entrance of the paper between these cylinders, I may produce the
following combinations with regard to the number of colours to be placed on each
side, and in utilizing the whole of the printing cylinders; it is evident that I
might further only employ a part of these cylinders.
Fig. 12. 1st. The paper from the reel passes to roller 92, then in contact with
the printing cylinder 73 to roller 95, printing cylinder 76, rollers 96, 97, then to
the printing cylinders 62, 65, 66, 68, 69, thus obtaining one colour on one side, and
six on the other.
2nd. The paper passes over the roller 98, to printing cylinder 73, roller 95,
printing cylinder 76, rollers 96, 97, printing cylinders 62, 65, 66, 68, 69, thus
obtaining two colours on one side and five on the other.
3rd. The paper passes between the printing cylinder 62 and blanket cylinder 63,
then over roller 97, in contact with printing cylinder 73, to roller 95, printing
cylinder 76, roller 96, printing cylinders 65, 66, 68, 69, thus obtaining three
colours on one side and four on the other.
Finally by passing the paper over roller 92, then between cylinders 73, 74, over
rollers 93 and 94, to printing cylinder 75, roller 97, printing cylinders 62, 65, 66,
68, 69, the seven colours will be obtained on the same side.

page_text: For impressions in colours which require to be carefully executed it is indis-
pensable that a very good register should be obtained and also that any off-set
on or blurring of the impressions should be avoided, which off-set or blurring may
be produced either by superposing the sheets one on another, or simply in the
handling of these sheets to remove them from the delivery tables.
I may obtain the register of the different colours when adjusting and starting
the machine either by increasing or diminishing the length of paper between two
succeeding impressions by the employment of movable rollers 22*, 23x and 24*, as
shown in Fig. 13, or by applying to the printing cylinders, toothed rim wheels
which are movable on plates secured to the axes of the cylinders, and which wheels
by means of an adjusting screw enable either one cylinder or a set of cylinders
to be slightly turned, the other cylinders remaining stationary. Independent
of these known means I may further cause two succeeding impressions to
register by displacing either a printing cylinder, or a set of cylinders, as the case
may be.
Thus supposing that the impressions obtained on cylinder 8 and cylinder 9 do not
exactly register, it is only necessary to cause cylinder 8, or even cylinder 2 with
which it is connected by gearing, to rise or fall, so as to increase or diminish the
travel of the paper between the two impressions, without having to employ
roller 22*. To cause the impressions produced by cylinders 9 and 10 to register I
may employ the movable crown wheel and make one of the cylinders turn, the
other, as well as cylinder 3, remaining stationary. I may further employ movable
circles or rules the operation of which I have described in the Specification of my
prior application for Patent No. 16012 dated 9th October 1890.
To ensure the register of the two impressions obtained on the blanket cylinder 3
with that of the two impressions obtained on blanket cylinder 4, I may, the set of
cylinders 4. 11 and 12, being mounted on the same frame, cause this set to
approach to or recede from the set formed by cylinders 3, 10, 9, and thus obtain an
exact superposition of the impressions.
To avoid off-set on the sheets or the blurring of the impressions, I may, as I
have already done in machines for printing good work, heat the rollers 22*,
23, 24*, and also the cutting and folding cylinders 14, 15, 16, or the accumulating
cylinders employed if the sheets are not required to be folded.
In order to ensure more perfect drying after all the impressions have been
taken, I may collect the sheets after they leave the printing cylinders if same are
not to be folded in the machine, or after they leave the folding cylinders if the
machine is to fold as well, between two endless bands or webs passing over a series
of drums heated by any suitable means, and afterwards lead such sheets to the
delivery apparatus. Fig. 14 shows an arrangement of such endless bands or webs
situated at the delivery of the folding cylinders; the same arrangement might be
applied to sheets coming directly from the printing cylinders, and I reserve to
myself the right of causing the sheets after they leave the endless bands or webs,
to be either folded mechanically, or mechanically delivered without folding, and in
this case I may further abolish the endless bands or webs, the cutting of the paper
then being effected after it has passed round the drying cylinders 26*, 25*.
In Fig. 13 1 have shown another means of preserving the wet or fresh
impressions from the ill effects resulting from superposing the sheets and from
handling same.
27 is a reel of paper. I may cause the web from this reel to pass directly
over roller 34* and engage between the cylinders 14 and 15 at the same time as
the printed sheet, the two webs being cut and folded together, and the blank paper
from reel 27* will effectually protect the side of the last impression taken on the
printed sheet. If the sheets after having been cut are collected on an
accumulating cylinder the same arrangement may also be employed.
In the machine shown the cylinders 14 and 15 cut the sheet and give it the first
fold, and it then receives a second fold between the cylinders 15 and 16. Suppose,
that the copy thus folded is of 8 pages and that the development of the printing

page_text: cylinders is 4 pages; if only pages 1 and 8 contain coloured prints, it is these
especially which will require protection.
In this case I cause the paper from reel 27* to pass between the cutting
cylinders 32 and 33*, and I produce strips of paper of a development equal to
half that of the printed publication; these strips are conveyed by tapes travelling
at half the speed of that of the paper in the machine up to the cylinders 15
and 14, and when the latter come in contact to cut the printed sheet, at the same
time they seize the head of the blank sheet and carry it forward at their own
speed; the tail of the sheet is engaged by blade 35* under blade 36* and is
carried forward by the latter at the same time that the printed sheet receives its
first fold, then the second fold is made at the same time in both sheets, and from
the direction of the engagement of the blank paper between the cylinders 14
and 15 it results that the printed copy delivered to the delivery box or tray
is enclosed in a cover of blank paper which protects pages 1 and 8.
In the case where the cover itself requires to be printed it will only be
necessary to add the set of cylinders 28×, 29*, 30 and 31*, to the machine.
In this case, in order to more carefully protect the impressions in colour, that
part of the sheet serving for this purpose which faces such impressions may be left
blank.
I may apply the arrangement above described to machines in which the paper is
not folded, in which case the paper from reel 27* will then be interposed between
the different sheets printed in colours or even in black only for good work.
Dated this 10th day of July 1891.
ALLISON BROS.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Rotary Printing Machines.
I, JULES MICHAUD, of 96 Rue d'Assas, Paris, France, Engineer, do hereby
declare the nature of this invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:—
The present invention relates to improvements applicable to rotary printing
machines generally. I shall proceed to describe such improvements as applied to
different arrangements of machines for colour printing; they may be applied
irrespective of the number of printing cylinders eniployed.
My invention is illustrated in the drawings accompanying my Provisional
Specification, and also in the additional sheet of drawings accompanying the present
Specification (Figs. 15, 16, 17, 18, 19 and 20).
Fig. 1 is a general view in elevation of the whole machine.
Fig. 2 is a side elevation of a modification of the means employed for delivering
a packet or pile of sheets.
Fig. 3 is a side elevation and Fig. 4 an end view of a further arrangement for
delivering packets or piles of sheets.
Fig. 5 is an elevation of the means employed for ensuring the regular feed of the
paper from the reel, and
Fig. 6 is a similar view of a modified form of such means.
Fig. 7 is a side elevation of an arrangement for increasing the output of a machine
for printing works or publications part of the pages of which require to be printed
in one colour only, and the remainder in several colours.
Fig. 8 is a side elevation of a modified form of the machine shown in Fig. 7.
Fig. 9 is a plan view and Fig. 10 an end elevation of a further modification of
the machine shown in Fig. 7.
Fig. 11 is a side elevation showing another arrangement of cylinders producing
impressions in one colour only.

page_text: Fig. 12 is a side elevation of a modified form of the machine shown in Fig. 11,
and in which a single reel only of paper is employed.
Fig. 13 is a side elevation of a machine showing suitable means for obtaining a
correct register of the impressions produced by the different printing cylinders, and
also means for preventing off-set or blurring of the printed sheets.
Fig. 14 is a side elevation of the means employed for drying the sheets after
they have received all the impressions.
Fig. 15 is a transverse section of a modified arrangement for actuating the feed
roller, and
Fig. 16 is a longitudinal section of same.
Figs. 17 and 18 are corresponding views to Figs. 15 and 16 showing a further
modification of such arrangement.
Fig. 19 is a longitudinal section of an intermediate wheel for actuating the feed
roller, and
Fig. 20 is a side elevation of a blanket cylinder showing an arrangement for
providing a continuous circle for balls which govern the feed of the paper to bear
upon.
1, 2, 3, 4, 5, are the blanket or impression cylinders; 6, 7, 8, 9, 10, 11, 12, 13,
are the printing cylinders. Each of the latter is provided with an inking
apparatus; 14, 15, 16, are the cutting and folding cylinders.
Blanket cylinder 1 prints one side of a sheet in two colours by contact with the
printing cylinders 7, and 6; the others serve for printing the other side of the
sheet.
'
I have shown four blanket cylinders 2, 3, 4, 5, for the second side of the sheet,
but there may be more, and to each I may apply one or more printing cylinders,
but, no matter what the number of these cylinders, as shown in Fig. 1, I
arrange them so that by means of the space left between them each cylinder may
be reached and the blanket readily removed, and the make-ready effected with
ease.
The printing cylinders being outside the line formed by the paper passing round
the blanket cylinders, these operations will in no way be interfered with.
The result of this arrangement of cylinders and the manner in which the paper
travels, is that the removal of the blankets and the make-ready may be effected on
the cylinders for printing the second side of the sheet and for colour printing,
without having to cut the paper.
The reel of paper to be printed is shown at 17; 18 is a reel of paper for the
off-set, the object of which is, by its interposition between the blankets of
cylinders 2, 3, 4, 5, and the printed sheet, to prevent the soiling of the blankets
on such cylinders.
The web of off-set paper is rewound on spindle 19 under the action of the
rollers 20, 21; an examination of Fig. I will show that by this arrangement the
off-set web as well as the web to be printed can remain engaged in the machine
and have no need to be cut to enable the make-ready to be effected on the blanket
cylinders 2, 3, 4, 5, nor for changing the blanket.
As the roll 19 increases in diameter the spindle on which the off-set web is
rewound ascends between two guides of which the one 22 is movable to facilitate
the removal of the roll. The movable part 22 can be raised and brought to the
position 221; 23 is a screw or bolt by loosening which this can be effected.
In the case where the employment of an off-set web is not indispensable I may
apply cleaning rollers 60 to each of the blanket cylinders, such rollers, either
coated with paraffin or not, serving to clean the blankets.
The printed sheets are cut and folded by the cylinders 14, 15, 16, and are then
received by the flyers 24; 25 is an endless web of linen, leather belt, or metallic
sheet passing over two rollers 26, 27; pins or stops 28, 281, etc., are fixed to this
strap or web, and are the same distance apart as the size of the folded sheet; the
parts 29 which correspond with recesses made in the rollers 26, 27, ensure the strap
being carried forward, but this may be effected by any other suitable means. By

page_text: means of the mechanism consisting of the cam 30, lever 31, connecting rod 32, the
pawl lever 33, pawl 34 and the ratchet 35, for a given number of revolutions of
the printing cylinders I obtain a forward travel of the web equal to the length of
the sheet, such travel occurring between two movements of the flyers, whereby the
packet or pile of sheets previously received advances from 36 to 37, where it may
be readily removed, and which pile consists of a given number of sheets.
Figs. 2, and 4 show two other arrangements for obtaining the same result..
In Fig. 2, 38 is a prism each side of which is equal to the size of the sheet; on
one of its faces it receives a given number of sheets and when such number is
attained it is turned by means of the same mechanism as previously described, to
the position to present a new face to the flyers.
In Figs. 3 and 4 the sheets are delivered on to a table 39, through hollow spaces
or recesses in which pass rods 40 attached to levers 41 and supported by a bar 42
on which they slide; the levers 41 are keyed to a shaft and have an oscillating
movement imparted to them by cam 47 through the intermediary of lever 46 and
connecting rod 45.
The levers being in the position 41, when the desired number of sheets is
received at 49, the cam acts and the levers are moved to 41'.
The rods 40 are connected together by a stop 51; they are raised and carry
forward the packet or pile which has been received, carry same to 50, and then
return to their original position before the flyers descend again; a stop 52 prevents
the paper being forced too far forward.
In all rotary machines in general and particularly in that class to which the
present invention is specially applicable, it is of very great importance to ensure a
regular travel of the paper no matter what resistance is offered by the breaks to
the unwinding of the reels. In machines as at present constructed it may happen
that at a given moment the blanket cylinders ali cease to bear on the printing
cylinders, and that then a slipping of the paper may occur which may produce a
failure in either the register of the impressions on the opposite sides of the sheet,
or in the register of the different colours. In this case the balls bearing against
the cylinders or rollers in the blank or white parts may not prove sufficient to
prevent such slipping.
I ensure the feed of the paper from the reel not only by rollers and balls and by
the pressure of the printing cylinders on the blanket cylinders, which pressure
is necessarily intermittent on account of the spaces between the printing plates,
but by the pressure before any impression of a roller clothed with india rubber
or other suitable substance, and even by the pressure of an unclothed roller,
against a cylinder travelling at exactly the same speed as the circumference of the
blanket cylinders.
This arrangement is shown in Figs. 5 and 6. In Fig. 5 a roller 53, made of
a yielding material or not, turns in contact with the blanket cylinder 1 against
which it can be caused to bear, the bearings or blocks in which it is mounted being
movable. A second roller 54 bears against the former and it is between this roller
and roller 55, which may be of yielding material or not, that the paper passes; the
rollers 54 and 55 being also mounted in movable bearings, by these means I obtain
between the rollers 53, 54, 55, sufficient pressure to ensure the travel of the paper
at exactly the same speed as that of cylinder 1, as it is this cylinder which drives
the rollers.
So as to avoid the stoppage which might occur in the travel of the paper at the
moment when the roller 53 passes over the gaps made in cylinder 1, I take care to
place this roller in contact with the cylinder so that at the moment when the gaps
pass under same, the printing plates on cylinder 6 are pressing against the cylinder 1
and ensure the feed of the paper.
I may effect the same result by placing the roller in contact with two rollers 53
and 53 bearing on the blanket cylinder as shown in Fig. 6, such rollers 53 and 53¹
being arranged so that when one is opposite the gap the other bears against the
cylinder.

page_text: By means of either of these arrangements the paper is fed forward with great
regularity and the creasing of the paper which always occurs during the passage of
the gaps of the cylinders when the feed of the paper is effected by pressing it
directly against the blanket cylinder, is avoided.
In Fig. 1 another arrangement is shown for producing the saine result. 55 is a
roller driven by gearing and revolving at a surface speed exactly equal to that of
the printing cylinders; against this roller bears another roller 56, which may be of
yielding material or not; in this case the pressure on the paper between the two
rollers always remains constant. This method of feeding the paper is employed in
machines for printing sheets of different sizes, but it may happen that by reason
of very slight variations in the covering of the blanket cylinder, the speed of
roller 55 does not exactly correspond with the surface speed of the blanket
cylinder, which might produce either an advance or a delay in the unwinding
and consequently cause the paper to break or impair the register. In order to
avoid this difficulty between the blanket cylinder 1 and the roller 55, I place a
roller 57 mounted on spring supports. If roller 55 supplies too much paper, the
spring of roller 57 ensures the proper tension by raising this roller; if on the
contrary roller 55 does not supply sufficient paper, roller 57 will be lowered,
the paper compressing the spring; the breaking of the paper is thus avoided while
its regular feed is ensured.
I
may further actuate the roller 55 so as to always maintain the tension of the
paper even when there should be a slight difference between its speed and that of
the blanket cylinders, and without employing the roller 57.
$
Firstly, the surface speed of roller 55 is calculated so as to be absolutely the
same as that of the impression cylinders when carrying the normal clothing or
covering, that is to say the blankets and a "make-ready" of a thickness determined
in advance. If, therefore, the surface speed of the roller 55 is greater than that of
the blanket cylinders, it is because the latter are insufficiently clothed; it will be
necessary to apply to the cylinders a sheet of paper beneath the blankets, to
increase their development and consequently their surface speed and thus attain as
near as possible (sooner exceeding it than otherwise) the surface speed of the
roller 55; the paper will then keep stretched between the roller 55 and the
printing cylinders, and it only remains to avoid the breaking of the paper which
might occur from excessive tension if the speed of roller 55 is below that of the
blanket cylinders.
To effect this I may actuate the roller 55 in such a way that it ensures the feed
of the paper at the speed it is calculated it should have, but further if the speed
of the printing cylinders is higher than that calculated (which might occur at
the beginning of an impression when the blankets are not then compressed) it
will be the printing cylinders which draw the roller 55 round at their own speed
by means of the sheet of paper itself.
Several mechanical arrangements may be employed to obtain this result, those
illustrated in Figs. 15 to 19 of the drawings being only shown as suitable examples
of same, and for which I may substitute any other known meaus.
Figs. 15 and 16 show an arrangement which may affect the gearing actuating
roller 55; a is a toothed piece keyed to the shaft of the roller, and on which
is centred and freely turns a gear wheel actuated by the wheels of the machine
itself. Small cylinders or rollers c or balls enter freely in the spaces left between
the parts a and b.
Wheel turns in the direction indicated by the arrow, and there is always a
certain number of the cylinders or balls c wedged between a and band which tend
to drag the roller round.
If at any given moment the speed with which the paper is drawn forward by the
printing cylinders exceeds that communicated to the roller by the wheel b, this
roller will under the action of the paper turn, carrying with it the piece a and
without experiencing any opposition on the part of the wheel b; when the two

page_text: speeds again become the same the cylinders or balls c again become wedged and
the roller 55 turns only under the action of the toothed wheel b.
In Figs. 17 and 18 I have shown another arrangement which the gearing may
assume, 6 being the wheel driven by the machine, a a ratchet wheel on the shaft of
the roller, and d are pawls. The wheel in turning actuates the roller through the
intermediary of the pawls d.
On the speed of the paper exceeding that communicated by b, the roller turns
under the action of the paper; there are several pawls d, and I may if desired
place others at e. They are of different lengths so that when one of them leaves
a tooth of the ratchet wheel, another pawl is in contact with another tooth.
Instead of mounting the gearing in two parts on the roller 55 itself, I may have
an ordinary wheel on this roller and employ a double gear for one of the inter-
mediate wheels serving to actuate the roller. I have shown such a gear wheel in
Fig. 19, where f is the driven wheel, and it actuates the wheel g by the inter-
mediary of pawls or balls, such wheel g, in its turn, gearing with the wheel keyed
to the roller 55, which will be actuated under the same conditions as previously
described.
I might further actuate the roller 55 by means of a cord, belt or strap passing
over a pulley on this roller.
The increase of speed of the roller, due to an excess of draught of the paper
by the printing cylinders would cause a slight slipping of the cord or belt on the
pulley, and thus prevent the rupture or breaking of the paper.
With regard to the drawing of the paper along by balls of metal, india rubber,
or other suitable material bearing upon the blanket cylinder, I have devised means
for avoiding the inconveniences resulting from the passage of the gaps in front of
such balls.
In the case where there is a blank or white corresponding to the middle of the
printed sheet, I may, as indicated in Fig. 20, have in the middle of the cylinder a
circle of which the diameter is equal to that of the cylinder when clothed, which
circle divides the gap into two parts, making two of each one. Separate rods for
hooking and stretching the blankets will then be provided for the right haud and
for the left hand of the machine. This arrangement will further have the advantage
of facilitating the "making-ready" on the cylinder, as the blankets will be in two
parts in the direction of the length of such cylinder.
"
If there were three or more printing plates in the width of the machine, I should
employ as many gaps as there are plates in the length of the blanket cylinder.
The machine above described is constructed so as to be able to print one side of
all the pages of a work or publication in two colours and the other side of all the
pages of such work in six colours.
It
may happen that only a part of the pages of a work or publication requires
to be printed in several colours, the remainder being in one colour only.
Suppose, for example, that a publication has eight pages and that there are only
four pages of one side to be printed in one colour only and two pages of the
other to be printed in four colours, the two other pages of this same side being
printed in one colour ouly.
If the cylinders of the machine carry on their surface four pages of the
publication, it will be seen that in this case there will only be one half of the
surface of the cylinders to produce the printing in colours which will be utilized.
I have therefore invented the arrangement shown in Fig. 7 which enables me to
double the output of the machine without increasing its speed, by utilizing the
whole of the surface of the cylinders for printing in colours to make the impression
in colours twice.
To obtain this result I add a second reel 77 and two sets of cylinders 73, 74,
76, 76, for producing the pages which are to be in black or in one colour only,
Suppose, for example, that the work being an 8-page publication, only the
twice.

page_text: pages 1 and 8 are to be printed in several colours on one side, the other side of
these pages, that is to say the pages and 7, having to be printed in one colour
only and all the other pages the same, that is to say pages 3, 4, 5 and 6 being also
in one colour only.
I then place two printing plates of each of the pages 2 and 7 on cylinder 62,
then in succession two printing plates of each of the colours for pages 1 and 8 on
the cylinders 65, 66, 68 and 69.
I then place on the printing cylinders 73 and 76 two printing plates of each of
the pages 3, 4, 5 and 6, and I cause the paper from the two reels 61 and 77 to
pass as shown in Fig. 7.
For each revolution of the printing cylinders I thus obtain twice four pages,
that is to say twice the pages 1, 2, 7 and 8, and twice the pages 3, 4, 5 and 6, and
by providing two cutting apparatus and two folding apparatus on the cylinders 70
and 71, it will be seen that the two parts of four pages will be inserted in each
other and folded together; the output is thus doubled without increasing either
the speed, the number of inking apparatus for the colours, nor the number of colour
distributing rollers.
It will be seen that if the publication has 12 pages of which 10 are in one colour
only, I may, by adding another set of printing cylinders and a third reel, produce
not only twice 8 pages per revolution of the cylinders but twice 12 pages.
I might obtain the same result for publications of 12 pages by doubling the
diameter of the cylinders 73, 74, 75, 76, and causing them to still make the same
number of revolutions as the cylinders printing the colours; the surface speed
being doubled they will then print twice 8 pages, and I should give one fold to
these parts of 8 pages, and then direct them by a set of tapes to join and receive
a last fold with the 4 pages printed in colours.
This arrangement presents very great advantages :-
The adjustment of the colour inking apparatus,
The adjustment of the colour distributing rollers,
The cleaning of these rollers, and
The loss of ink resulting from such cleaning, will be the same as in the original
machine although the output will be doubled.
Fig. 8 shows another arrangement of machine for producing the same result,
in which arrangement the set of cylinders belonging to reel 79 is arranged at the
delivery end of the machine instead of the opposite end thereof.
Figs. 9 and 10 illustate another arrangement; the original machine is shown
at 80 in plan in Fig. 9 and in end elevation in Fig. 10; the reel is at 81, the
delivery at 82, the auxiliary cylinders have their axes perpendicular to those of
the cylinders of the original machine described. The web from the reel 83
having been printed once is caused to turn over the bar 84 which then enables
it to be superposed on the other web as in the preceding cases.
The different arrangements above described and those which are hereinafter
described may be employed irrespective of the number of printing cylinders with
which the machine is provided.
In Fig. 11 I have shown another arrangement of cylinders producing impressions
in one colour only.
The machine shown in this fig. like those shown in Figs. 7 and 8 is intended
for printing 4 colours on one side and a single colour on the other side of a
sheet, but the arrangement might be exactly the same for a machine to produce
auy other number of impressions.
In the machine shown in Fig. 11 the additional cylinders are introduced in the
machine itself, instead of forming a set separated therefrom.
The two reels instead of being placed on the same side or end of the machine
might be arranged one at one side and one at the other.
This arrangement enables the space occupied by the machine to be diminished,
but it has, however, the disadvantage of rendering the machine less easy to prepare.

page_text: A flooring must be placed over the paper proceeding from the reel 87 in order to
permit access to the interior of the machine for the purpose of making-ready or
changing the blankets.
I may further construct the machine in the form shown in Fig. 7, that is to say
without employing a second reel and the cylinders belonging thereto, but making
the printing cylinders 62 and 69 of a length double that of the other cylinders, the
blanket cylinders 63 and 67 being of a corresponding length.
The reel is separated into two webs by the disc 88, one of such bands being
printed on one side by cylinder 62, then on the other by cylinders 65, 66, 68, 69.
The other web having been first printed by cylinder 62, passes over the roller 89
to cylinder 67 on which it is printed on the other side by cylinder 69, passes over
roller 90, on to the displacing apparatus 91, over roller 92 and is superposed on the
first web between the cutters and folders 70 and 71. The displacing apparatus
referred to is described in the Specification of my Patent No. 20001 dated
8th December :890.
It will be seen that by suitably arranging the formes I shall obtain the same
result as in the preceding cases.
I may also construct a machine of this description so as to produce any desired
number of colours, either on one side only or on both sides.
I may also employ more than four printing plates in the direction of the
development of the cylinders.
I may further increase the number of sets of printing cylinders and the number
of reels employed in a single machine.
The folding apparatus may be modified so as to give a greater number of folds,
or folds in different directions.
From the combination of these elements which may be varied in themselves, or
vary in the manner of combining them together, it results that on a machine, the
novel action of which will be apparent from the above description and from the
drawings, I am able to print and fold publications composed of a certain number of
sheets which are superposed and folded together and which have one or more
pages printed in colours, so as to effect economy in the time and in the colours
employed.
may by using a modified form of the machine shown in Fig. 11, and which is
shown in Fig. 12, only employ a single reel and utilize the whole or part of the
additional cylinders 73, 74, 75, 76, to increase the number of impressions on the
paper from such reel.
If I vary the direction of rotation of a part of the printing cylinders and the
direction of entrance of the paper between these cylinders, I may produce the
following combinations with regard to the number of colours to be piaced on each
side, and in utilizing the whole of the printing cylinders; it is evident that I might
further only employ a part of these cylinders.
Fig. 12. 1st. The paper from the reel passes to roller 92, then in contact with
the printing cylinder 73 to roller 95, printing cylinder 76, rollers 96, 97, then to
the printing cylinders 62, 65, 66, 68, 69, thus obtaining one colour on one side, and
six on the other.
2nd. The paper passes over the roller 98, to printing cylinder 73, roller 95,
printing cylinder 76, rollers 96, 97, printing cylinders 62, 65, 66, 68, 69, thus
obtaining two colours on one side and five on the other.
3rd. The paper passes between the printing cylinder 62 and blanket cylinder 63,
then over roller 97, in contact with printing cylinder 73, to roller 95, printing
cylinder 76, roller 96, printing cylinders 65, 66, 68, 69, thus obtaining three colours
on one side and four on the other.
Finally by passing the paper over roller 92, then between cylinders 73, 74, over
rollers 93 and 94, to printing cylinder 76, roller 97, printing cylinders 62, 65, 66,
68, 69, the seven colours will be obtained on the same side.
For impressions in colours which require to be carefully executed it is indis-
pensable that a very good register should be obtained and also that any off-set on

page_text: or blurring of the impression should be avoided, which off-set or blurring may be
produced either by superposing the sheets one on another, or simply in the handling
of these sheets to remove them from the delivery tables.
I may obtain the register of the different colours when adjusting and starting the
machine either by increasing or diminishing the length of paper between two
succeeding impressions by the employment of movable rollers 22*, 23x and 24*, as
shown in Fig. 13, or by applying to the printing cylinders, toothed rim wheels
which are movable on plates secured to the axes of the cylinders, and which wheels
by means of an adjusting screw enable either one cylinder or a set of cylinders to
be slightly turned, the other cylinders remaining stationary. Independent of these
known means I may further cause two succeeding impressions to register by
displacing either a printing cylinder, or a set of cylinders, as the case may be.
Thus supposing that the impressions obtained on cylinder 8 and cylinder 9 do
not exactly register, it is only necessary to cause cylinder 8, or even cylinder 2
with which it is connected by gearing, to rise or fall, so as to increase or diminish
the travel of the paper between the two impressions, without having to employ
roller 22x. To cause the impressions produced by cylinders 9 and 10 to register 1
may employ a movable wheel and make one of the cylinders turn, the other, as well
as cylinder 3, remaining stationary. I may further employ movable circles or
rules, the operation of which I have described in the Specification of my prior
Patent No. 16012 dated 9th October 1890.
To ensure the register of the two impressions obtained on the blanket cylinder 3
with that of the two impressions obtained on blanket cylinder 4, I may, the set of
cylinders 4, 11 and 12, being mounted on the same frame, cause this set to
approach to or recede from the set formed by cylinders 3, 10), 9, and thus obtain an
exact superposition of the impressions.
To avoid off-set on the sheets or the blurring of the impressions, I may, as I
have already done in machines for printing good work, heat the rollers 22*, 23*, 24*,
and also the cutting and folding cylinders 14, 15, 16, or the accumulating cylinders
employed if the sheets are not required to be folded.
In order to ensure more perfect drying after all the impressions have been taken,
1 may collect the sheets after they leave the printing cylinders if same are not to
be folded in the machine, or after they leave the folding cylinders if the machine is
to fold as well, between two endless bands or webs passing over a series of drums
heated by any suitable means, and afterwards lead such sheets to the delivery
apparatus. Fig. 14 shows an arrangement of such endless bands or webs situated
at the delivery of the folding cylinders; the same arrangement might be applied
to sheets coming directly from the printing cylinders, and I reserve to myself the
right of causing the sheets after they leave the endless bands or webs, to be either
folded mechanically, or mechanically delivered without folding, and in this case I
may further abolish the endless bands or webs, the cutting of the paper then being
effected after it has passed round the drying cylinders 26*, 25*.
In Fig. 13 I have shown another means of preserving the wet or fresh impressions
from the ill effects resulting from superposing the sheets and from handling same.
27 is a reel of paper.
may cause the web from this reel to pass directly over
roller 34* and engage between the cylinders 14 and 15 at the same time as the
printed sheet, the two webs being cut and folded together, and the blank paper from
reel 27* will effectually protect the side of the last impression taken on the printed
sheet. If the sheets after having been cut are collected on an accumulating
cylinder the same arrangement may also be employed.
In the machine shown the cylinders 14 and 15 cut the sheet and give it the first
fold, and it then receives a second fold between the cylinders 15 and 16. Suppose,
that the copy thus folded is of 8 pages and that the development of the printing
cylinders is 4 pages; if only pages 1 and 8 contain coloured prints, it is these
especially which will require protection.
In this case I cause the paper from reel 27* to pass between the cutting
cylinders 32 and 33*, and I produce strips of paper of a development equal to half

page_text: that of the printed publication; these strips are conveyed by tapes travelling at
half the speed of that of the paper in the machine up to the cylinders 15 and 14,
and when the latter come in contact to cut the printed sheet, at the same time they
seize the head of the blank sheet and carry it forward at their own speed; the
tail of the sheet is engaged by blade 35* under blade 36* and is carried forward
by the latter at the same time that the printed sheet receives its first fold, then the
second fold is made at the same time in both sheets, and from the direction of the
engagement of the blank paper between the cylinders 14 and 15 it results that
the printed copy delivered to the delivery box or tray is enclosed in a cover of
blank paper which protects pages 1 and 8.
In the case where the cover itself requires to be printed it will only be necessary
to add the set of cylinders 28×, 29*, 30* and 31%, to the machine.
In this case, in order to more carefully protect the impressions in colour, that
part of the sheet serving for this purpose which faces such impressions may be left
blank.
I may apply the arrangement above described to machines in which the paper
is not folded, in which case the paper from reel 27* will then be interposed between
the different sheets printed in colours or even in black only for good work.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The various improvements in rotary machines for colour printing herein
described.
2. The combination with a pair or set of cylinders for printing one side of a web
of paper, of a number of pairs or sets of cylinders for printing the other side of
such web, the blanket cylinders of the latter being all arranged inside and the
printing cylinders all outside the line of travel of the paper, substantially as and
for the purpose specified.
3. The combination with a rotary printing machine constructed as set forth in
the preceding claim, of an off-set web of paper which passes with the main web
through the cylinders for printing the second side of such web, and between it and
the blanket cylinders, substantially as specified.
4. The arrangement for rewinding the off-set web, consisting in a spindle resting
upon and actuated by two rollers and capable of rising between guides as the roll
increases, one of such guides being movable to enable the spindle to be introduced
and removed, substantially as specified.
5. The use of an endless belt or band receiving a certain number of printed
sheets from a rotary printing machine, and which belt is intermittently actuated so
as to carry forward and deliver the number of sheets it has received, substantially
as described and shown in Fig. 1 of the drawings.
6. The employment of an intermittently actuated reel or prism for receiving a
given number of sheets from a rotary printing machine, and then carrying same
forward and delivering them, substantially as described and as shown in Fig. 2 of
the drawings.
7. The employment of an intermittently oscillating rod or frame for receiving
a given number of sheets from a rotary printing machine, and then carrying same
forward and delivering them, substantially as described and as shown in Fige. 3
and 4 of the drawings.
8. The combination with a printing machine properly so called of two rollers
O serving to ensure the unrolling and carrying forward of the paper, such rollers
being driven by friction by the aid of one or more intermediate rollers in contact
with the blanket cylinder, and therefore rotating at exactly the same speed as this
cylinder, substantially as specified.
9. The combination with a printing machine in which the paper is cut after
5 printing, of two rollers serving to feed the paper, but of which one is driven by
gearing and having a surface speed equal to that of the printing cylinders, and of

page_text: a movable roller mounted on springs and compensating for any slight differences
of speed which variations in the clothing of the cylinders might occasion, substan-
tially as specified.
10. The combination with a printing machine of two rollers serving to carry the
paper forward, one of which rollers is actuated by the printing machine itself and
causes the paper to unwind at a given speed, and which can partake of the exact
speed of the web when the latter increases under the action of the cylinders of the
machine, substantially as specified.
11. In rotary printing machines the employment of blanket cylinders having
several gaps on the same generating line of the cylinder, so as to be able to cause
the balls or rollers serving to carry the paper forward to bear upon a circle which
is continuous and without a recess at the place where the gaps occur, and so as to
be also able to have different blankets separately stretched for each printing plate
arranged side by side in the length of the cylinder, substantially as specified.
12. In a rotary printing machine the combination of printing cylinders serving
to receive the colours with as many sets of cylinders serving to print in black
and as many reels of paper as are requisite to enable the greatest possible portion
of the development of the colour printing cylinders to be utilized, substantially as
specified.
13. The method of changing the direction of rotation of one or several sets of
cylinders of a printing machine, and the engagement of the paper therewith, so as
to be able to produce all combinations, with regard to the number of colours on
either side of the paper, which it is possible to secure with the number of printing
cylinders employed, substantially as specified.
14. In a rotary machine for colour printing the employment of one or more sets
of printing cylinders which can be displaced so as to increase or diminish the
path which the paper has to travel between two succeeding impressions, substan-
tially as specified.
15. The combination with a rotary printing machine properly so called, of a
drying apparatus consisting of endless bands or webs passing over one or more
heated cylinders for drying the paper either before or after same is folded, sub-
stantially as specified.
16. The combination with a rotary printing machine of a drying apparatus con-
sisting of endless bands or webs passing over one or more heated cylinders for
drying the paper after it has been cut, substantially as specified.
17. The combination with a rotary printing machine of a drying apparatus com-
posed of one or more heated cylinders for drying the paper before it is cut from a
web, substantially as specified.
18. The combination with a rotary printing machine of an off-set reel of paper
which unwinds so as to supply sheets serving to prevent off-set or blurring of the
impressions, such sheets being of variable dimensions and being capable of being
introduced between folded sheets and, in this case, serving as a cover to the folded
publication, and also being capable of being simply interposed between unfolded
sheets in the case where the sheets leave the machine unfolded, substantially as
specified.
19. The combination with a rotary printing machine of a reel of paper and of a
set of printing cylinders enabling sheets which are printed all over or only partly,
and which sheets are introduced into and folded with the publication the printing
machine is producing, or are simply interposed between unfolded printed sheets
produced by the machine, substantially as specified.
ALLISON BROS.,
Agents for the Applicant.