Improvements relating to Colour Printing Machines.
Year: 1897

page_text: Date of Application, 19th May, 1897
1000
PROVISIONAL SPECIFICATION.
Improvements relating to Colour Printing Machines.
I, JULES MEYRUEIS, of 189, Boulevard St. Germain, Paris, in the Republic of
France, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
In the employment of rotary presses for printing at a single operation on the
same machine, several juxtaposed or superposed colours, it is necessary in the first
place to exactly and symmetrically adjust on the various printing cylinders, the
printing blocks or stereotypes corresponding to the different colours, and then,
to regulate the making ready of the printing cylinders opposite to each of the
printing blocks or stereotypes of the corresponding printing cylinder.
This double operation is effected at present on the printing machines, and this
is often rather inconvenient, in consequence of the position of the cylinders
themselves in the machines, and always presents the serious disadvantage of
necessitating the stoppage of the machine for a long time.
The apparatus which forms the subject of this invention is intended to remedy
this inconvenience, by enabling these two operations to be carried out with great
precision on a stand independent of the printing machine. By means of an
arrangement of change cylinders the printing can be carried on whilst the blocks
or stereotypes for the next printing are put in order, and when this has been
done they can be placed on the press when the same is available.
This apparatus consists of a frame carrying bearings for the printing and
pressure cylinders and for paper reels and guide rollers and adjustable gauging
mechanism.
The upper part of the frame is on each side provided with a slide bar with
which engage the bases of the printing and pressure cylinders and the gauging
mechanism. The printing cylinder bearings are adapted to be fixed to the
slide bars, while the pressure cylinder bearings are adjustable thereon by screws
and nuts so as to produce the requisite surface contact between the pressure and
printing cylinders. The bearings for both cylinders are arranged so as to exactly
correspond with the bearings in the machine.
One end of the printing cylinder is provided with a disc graduated radially
and the adjacent bearing carries a horizontal pointer directed towards the
graduations on the disc so that the rotary angle through which the cylinder is
moved can be accurately determined. The rotation of the cylinder is effected by .
a crank handle and suitable toothed gearing.
The gauging mechanism is mounted on a transverse bar the ends of which
engage the slide bars on the frame and which is provided or formed on its upper
surface with a toothed rack, and with a rear extension carrying or formed with a
horizontal graduated plate.
Along the toothed rack travel one or more, preferably twe, carriages each
having a base on which is a toothed wheel gearing with the rack and a horizontal
pointer travelling over the horizontal graduated plate aforementioned. Each

page_text: carriage is also provided with a vertical rod on which a pointer is adjustable said
pointer being directed towards the printing cylinder and carrying a second pointer
or tail which travels over a vertical graduated plate also fixed to the carriage.
The operation of the apparatus is as follows: The printing blocks or stereotypes
must all be curved to the same radius corresponding with that of the printing
cylinders to which they are to be fixed, and they must all occupy identical positions
on their respective cylinders. In order to obtain this result it is necessary that,
previous to the adjustment of the printing blocks or stereotypes thereon, each
cylinder shall be brought to the same starting point. For this purpose the first
cylinder when placed on the frame is rotated through a given angle indicated by
the end disc and pointer, and this position is noted.
The cylinder is then fixed in this position and the travelling carriage (or
carriages as the case may be) is brought up so that the projecting pointer is
directed towards a given point on the block or stereotype, the positions of the
vertical and horizontal pointers are then read off from the respective scales; and
all the cylinders are successively put on the frame and brought to the same posi-
tions, thus ensuring that the blocks or stereotypes thereon occupy coincident
positions on the circumference of their respective cylinders.
To regulate the "making ready," the pressure cylinder is adjusted into surface
contact with the printing cylinder by the screws and nuts, the printing cylinder
is then inked and a print of the block or stereotype is taken on the pressure
cylinder. The necessary paper cuttings are then secured in correct position on
the pressure cylinder and a proof is taken by passing a strip of paper, from a
reel carried on the under part of the frame, between the printing and pressure
cylinders. When the necessary corrections have been made the cylinders are
ready for the machine.
It will be obvious that the gauging mechanism hereinbefore described need
not be fitted on a separate frame, but may if so desired be used for adjusting the
blocks or stereotypes on the printing cylinders while these are in position on the
machine.
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.
Improvements relating to Colour Printing Machines.
I, JULES MEYRUEIS, of 189, Boulevard St. Germain, Paris, in the Republic of
France, Manufacturer, 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:―
In the employment of rotary presses for printing at a single operation on the
same machine, several juxtaposed or superposed colours, it is necessary in the first
place to exactly and symmetrically adjust on the various printing cylinders, the
printing blocks or stereotypes coresponding to the different colours, and then,
to regulate the making ready of the printing cylinders opposite to each of the
printing blocks or stereotypes of the corresponding printing cylinder.
This double operation is effected at present on the printing machines, and this
is often rather inconvenient, in consequence of the position of the cylinders
themselves in the machines, and always presents the serious disadvantage of
necessitating the stoppage of the machine for a long time,

page_text: The apparatus which forms the subject of this invention is intended to remedy
this inconvenience, by enabling these two operations to be carried out with great
precision on a stand independent of the printing machine. By means of an
arrangement of change cylinders the printing can be carried on whilst the blocks
or stereotypes for the next printing are put in order; and when this has been
done they can be placed on the press when the same is available.
In the accompanying drawings Fig. 1 is a transverse section and Fig. 2 is
an end elevation of the apparatus forming the subject of this invention.
This apparatus consists of a stand or frame composed of two end parts G¹ and G²,
and carrying bearings for the pressure and printing cylinders and for paper reels
and guide rollers, and adjustable gauging apparatus.
The upper part of the frame or stand is on each side provided with a slide bar S
with which engage the bases G4 and G3 of the printing and pressure cylinders B¹
and A¹, and the gauging mechanism. The printing cylinder bearings G* are
adapted to be fixed to the slide bars S, while the pressure cylinder bearings G³ are
adjustable thercon by screws and nuts A2 so as to produce the requisite surface
contact between the pressure and printing cylinders A¹ and B¹. The bearings
for both cylinders are arranged so as to exactly correspond with the bearings in
the machine.
One end of the printing cylinder B¹ is provided with a disc B2 graduated radi-
ally and the adjacent bearing carries a horizontal pointer B³ directed towards the
graduations on the disc B2 so that the rotary angle through which the cylinder B¹ is
moved can be accurately determined. The rotation of the cylinder is effected by
a crank handle 12 and suitable toothed gearing D and C, the former D³ being
journalled on a short axle D¹ secured to the end E¹ of the frame, while the latter Ca
is fast on the cylinder axle.
The gauging mechanism is mounted on a transverse bar H the ends of which
engage the slide bars S on the frame and which is provided or formed on its upper
surface with a toothed rack N1, and with a rear extension carrying or formed with
a horizontal graduated plate U.
Along the toothed rack N' travel one or more, preferably two, carriages I each
having a base on which is a toothed wheel M gearing with the rack N and a
horizontal pointer T travelling over the horizontal graduated plate U afore-
mentioned. J is a hand wheel for operating the gear wheel M. Each carriage
is also provided with a vertical rod K on which a pointer R is adjustable by the
adjusting screws 01 02 03 said pointer R being directed towards the printing
cylinder B and carrying a second pointer or tail R¹ which travels over a vertical
graduated plate L also fixed to the carriage.
The operation of the apparatus is as follows:-The printing blocks or stereo-
types must all be curved to the same radius corresponding with that of the
printing cylinders to which they are to be fixed, and they must all occupy identical
positions on their respective cylinders. In order to obtain this result it is necessary
that, previous to the adjustment of the printing blocks or stereotypes thereon, each
cylinder shall be brought to the same starting point. For this purpose the first
cylinder B¹ when placed on the frame or stand is rotated through a given angle
indicated by the end disc B³ and pointer B³, and this position is noted.
The cylinder B¹ is then fixed in this position and the travelling carriage I (or
carriages as the case may be) is brought up so that the projecting pointer R is
directed towards a given point on the block or stereotype, the positions of the
vertical and horizontal pointers R and T are then read off from the respective
scales Land U; and all the cylinders are successively put on the frame and brought
to the same positions, thus ensuring that the blocks or stereotypes thereon occupy
coincident positions on the circumferences of their respective cylinders.
To regulate the " making ready," (the pressure cylinder A¹ is adjusted into
surface contact with the printing cylinder B¹ by the screws and nuts A², the
printing cylinder 13¹ is then inked by the inking roller B and a print of the block

page_text: or stereotype is taken on the pressure cylinder A¹. The necessary paper cuttings
are then secured in correct position on the pressure cylinder and a proof is taken
by passing a strip of paper, from a reel V¹ carried in bearings G5 on the under part
of the frame, over the guide roller G and between the printing and pressure
cylinders B and A', thence down between the guide rollers G8 G and wound
up again on a roller V2 carried in bearings G. When the necessary corrections
have been made the cylinders are ready for the machine.
It will be obvious that the gauging mechanism hereinbefore described need not
be fitted on a separate frame, but may if so desired be used for adjusting the
blocks or stereotypes on the printing cylinders while these are in position on the
machine.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. The apparatus herein described for adjusting the printing blocks or stereo-
types and regulating the making ready of the printing cylinders, consisting of a
frame or stand carrying bearings for securing the parallel position of the printing
cylinder with a support or slide on which one or two pointers are moveable over
graduated scales whereby points absolutely corresponding with one another can
be indicated on several printing cylinders successively substantially as described.
2. In apparatus of the kind indicated, the arrangement of a graduated disc
on the end of each printing cylinder enabling the same generating line of each
cylinder to be taken as the starting point in adjusting the blocks or stereotypes
thereon substantially as herein described.
3. In apparatus of the kind indicated, the arrangement for adjusting and
making ready, comprising a reel of paper for testing the printing results obtained
by means of the paper cuttings fixed on the pressure cylinder, substantially as
herein described.
4. In apparatus of the kind indicated, the arrangement of the shifting gauge
as shown by means of which the position of the pointer R in the vertical and in
the horizontal planes can be exactly fixed, substantially as described.
5. In apparatus of the kind indicated the arrangement of two moveable gauging
appliances moving parallel to the cylinders, and approaching or moving away from
one another substantially as described.
6. The use or employment of the apparatus or contrivances herein described on
the colour printing machine substantially in the manner and for the purposes
herein before set forth.
Dated this 18th day of February 1898.
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.