A METHOD OF AND APPARATUS FOR PRINTING IN COLOURS
Year: 1884

page_text: I, JOHN IMRAY of N° 28 Southampton Buildinge, Chancery Lane, in the
County of Middlesex, Consulting Engineer and Patent Agent do hereby declare
the nature of my invention for "A METHOD OF AND APPARATUS FOR PRINTING IN
COLOURS" to be as follows:-
According to this invention, several separate stereotype plates constituting a
forme are fitted to slide perpendicularly to the printing surface so that at one part
of their course they present themselves above its level to receive ink or colour from
one set of inking rollers, at another part they sink below to escapo rollers giving
another colour, and at another part they are brought to the proper level for giving
the impression, these movements being effected by suitable cams pressing the plates
outwards in opposition to springs pressing them inwards. Thus for example, when
the printing machine is of the rotary kind, the printing roller is made with two,
three or more cavities in which blocks carrying the stereotype plates are fitted to
slide radially. These blocks project at each end of the printing roller and have
mounted on them rollers pressed against stationary cams by springs. Around the
printing roller are arranged the several inking rollers delivering inks or pigments
of different colours, and the impression roller. As the printing roller revolves, each
block in its turn is moved outwards by its cams so as to bear against its proper
inking roller, and moved inwards by its springs so as to escape the other inking
rollers, and again moved and kept outwards while it is passing the impression
roller so as to print with the required colour the part of the paper which is passing
between it and the impression roller. The machine may be arranged to print
separate sheets or to be supplied from a continuous web with suitable cutting
apparatus, and to have the usual tapes and other guides and apparatus for
conducting and delivering the printed sheets.
Did this 14h Anh 1994
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: I, JOHN IMRAY, of No 28 Southampton Buildings, Chancery Lane, in the
County of Middlesex, Consulting Engineer and Patent Agent do hereby declare the
nature of my invention for "A METHOD OF AND APPARATUS FOR PRINTING IN
COLOURS and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :—
"
According to this invention several separate stereotype plates constituting a
forme are fitted to slide perpendicularly to the printing surface so that at ono
part of their course they present themselves above its level to receive ink or colour
from one set of inking rollers, at another part they sink below to escape rollers
giving another colour, and at another part they are brought to the proper level for
giving the impression, these movements being effected by suitable cams pressing tho
plates outwards in opposition to springs pressing them inwards. Thus for example,
when the printing machine is of the rotary kind, the printing roller is made with two,
three or more cavities in which blocks carrying the stereotype plates are fitted to slide
radially. These blocks project at each end of the printing roller and have nounted
on them rollers pressed against stationary cams by springs. Around the printing
roller are arranged the several inking rollers delivering inks or pigments of different
colours, and tho impression roller. As the printing roller revolves, each block in
its turn is moved outwards by its cams so as to bear against its proper inking
roller, and moved inwards by its springs so as to escape the other inking rollers,
and again moved and kept outwards while it is passing the impression roller so as
to print with the required colour the part of the paper which is passing between
it and the impression roller. The machine may be arranged to print separate sheets
or to be supplied from a continuous web with suitable cutting apparatus, and to
have the usual tapes and other guides and apparatus for conducting and delivering

page_text: printing cylinder C (the other parts of this cylinder being for printing in black).
They are rendered moveable by means of cams L fixed on each side of the frame Q
and acting on rollers K placed at the two ends of the moveable parts; in order to
cause the rollers to press continuously on the cams, spinnings n n upon rods 00
are made to press, on the one side, on the nuts P and on the other side upon the
plute I These rods 0 O. are screwed into the boss of the printing cylinder
and, passing into the holes oo of the plates, I, serve as guides for their motion.
The rollers P¹ for inking in black are always in contact with the fixed clichés of
the printing cylinder C, but those P* for inking in colour are slightly removed
therefrom in order only to ink those parts which project from the surface of the
printing cylinder. For this purpose the cams L are constructed with three dwells
of different radii p q r, that is to say, the dwell p serving to move outwards the
moveable part (as shewn at number one) in order to cause this to come in contact
with the roller P' and thus be supplied with colour; the dwell q which causes the
moveable part to move inwards (as shewn at number two) while the cylinder C is
being supplied with black ink in order to prevent the moveable part from receiving
ink; lastly the dwell (as shewn at number three) which brings the moveable part
flush with the printing cylinder during the printing. The rollers Q which take the
black ink from the rollers of the ink receptacle are actuated by the spur wheels va,
and those Q which take the coloured ink by means of the wheels v¹¹. The
continuous roll of printing paper R is arranged in front of the machine upon a
suitable frame and travels as indicated by the arrows in passing first between the
two rollers SS, then upon that S', and from there over the two impression cylinders
BB and during this travel, a saw placed on the axis y actuated by the spur wheel y¹
gearing with another wheel fixed on one of the impression cylinders cuts the paper
to the size required for printing, and from that point the sheets pass between two
rollers rotated by means of the wheels a¹ a¹ gearing with those e e, and upon
which are coiled tapes 'b' that draw the sheets between two other rollers c¹ c¹
fixed on the two arms T on the axis T. These arms T have an up and down motion
so that one sheet is engaged at d¹ and the following one at d. This movement is
obtained by means of toothed wheel on the axis of which is placed another wheel g¹
which transmits the movement to the cams f' through the wheels j¹. The
cams actuate one of the rollers i fixed on the levers i articulated at 13 and thus
imparting the motion to the arms T. On passing from the rollers c³ c¹, these being
assumed to be in face of the entry the first sheet engages between the tapes 1³ 12
which pass over the rollers m³ m² m³ m² and travel as indicated by the arrows until
the sheet engages in the entry d² at the precise moment when, the arms T having
moved downwards, the second sheet engages in the same entry d. The two sheets
are afterwards moved up to the beaters V by means of tapes n¹ n² the end ones n³
being only two in number and only holding the sheets at the edges. The beaters V
are fixed on a fraine X the ends of which slide in guides t't. They are actuated
by means of spur wheels 18¹ u¹the latter being fixed on the shaft of the cam Y.
This cam acting on the rollers ¹ fixed on the end of a lover y¹ also causes the
beaters to rise and fall, and in order to cause the roller to press continually upon
the cam, two springs z¹ are fixed, at one end, to the frame, and at the other end to
the levers. Thus, the beaters being arranged above the tapes, the two sheets
are brought underneath them by these tapes, the cain acts on the lever y¹, the
beaters descend and thus cause the sheets to fall either on the table or upon an
endless web.
1
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
1. In printing machines for printing simultaneously in several colours, the use of
moveable stereotype plates or clichés so arranged as to sink below the general
printing surface when this receives the ink, to rise above the said surfaco for
icceiving ink of different colour, and to be brought flush with the said surface for
effecting the printing substantially as herein described.

page_text: 2. Actuating the moveable stereotype plates or clichés referred to in the preceding
claim by means of cams in combination with springs arranged and operating
substantially as herein described.
3. The construction of printing machines for printing simultaneously in several
colours by means of moveable stereotype plates or clichés, arranged and operating as 5
herein described with reference to the accompanying drawings.