Improvements in the Production of Pictorial Illustrations.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Production of Pictorial Illustrations.
I, HENRY LASCELLES CARR, of "Western Mail," Cardiff, Newspaper Proprietor, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in connection with the printing of pictorial
illustrations and its object is to provide a method enabling an impression to be taken
direct from a half tone engraving introduced into a stereo plate and printed on a
rotary or flat inachine.
In carrying out this invention the half tone plate is produced in the usual manner
but a margin is left of a quarter of an inch all round. This margin is routed down
as thin as possible, and the half tone plate is then bent to the curve of the
cylinder.
The matrix is also made in the usual way, but the picture part is cut away
leaving an indentation the exact size of the picture. The half tone plate prepared as
above described, is placed in the matrix which it fills exactly the thick part of
the half tone fitting into the aperture and the thin part lying on the papier mache.
The under lay is then put in and three curved sticks the length of the picture
are placed one on each side of it and one in the middle. These sticks should be
kiln dried to prevent the formation of steam holes. The matrix box is then closed
down and the metal poured in producing a solid plate. If necessary a portion of
the outer edge and the thinned margin of the half tone may be turned up
allowing the metal to run close to the edge of the picture.
1011 J
1007
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.
Improvements in the Production of Pictorial Illustrations.
I, HENRY LASCELLES CARR, of "Curtyvil," Penarth, Glamorgan, Newspaper
Proprietor, 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 :-
This invention relates to improvements in connection with the printing of
pictorial illustrations and its object is to provide a method enabling an impression
to be taken direct from a half tone engraving introduced into a stereo plate and
printed on a rotary or flat machine.
In carrying out this invention the half tone plate is produced in the usual
manner but a margin is left of a quarter of an inch all round. This margin is routed
Paine 71

page_text: down as thin as possible, and the half tone plate is then bent to the curve of
the cylinder.
The matrix is also made in the usual way, but the picture part is depressed and
partly cut away. The half tone plate prepared as above described, is placed in the
depression in the matrix the thick part of the half tone exactly fitting the
depression the thinned part being bent down to allow the metal to run close to
the edge of the picture. Three curved sticks the length of the picture are
placed one on each side of it and one in the middle. These sticks should be
kiln dried to prevent the formation of steam holes. The matrix box is then
closed down and the metal poured in producing a solid plate.
In order to more clearly describe this invention reference is had to the
accompanying drawings in which,
Fig. 1 shows the half tone plate cut to the required shape, Fig. 2 is a
perspective view of the dies for bending the plate to the desired curvature Fig. 3
shows one of the wood strips Figs. 4 and 5 show sections of the plate with the wood
strips attached in readiness for placing face down on the matrix.
The half tone plate a is produced in the usual manner but a margin a¹ is left all
round for about a quarter of an inch all round. This margin is then routed down or
otherwise reduced in thickness so that it will easily bend. The corners are then
cut off as shown in Fig. 1.
The plate a is then placed between the dies b c (see Fig. 2) of such a curve that
they will bend the plate a to the radius of the cylinder of the printing machine.
The dies b c with the plate a between are placed in an ordinary copying press and
the platen of the press is then brought down on them. A slight pressure will bend the
plate a to the required curve.
The margins a¹ of the plate a are then bent down to an angle of about 40 degrees as
shown in sections in Figs. 4 and 5.
To the back of the plate a several strips of wood d are attached by glue and the
like and they are made of such thickness that together with the thickness of the
plate a they will equal the thickness of the stereo plate in which the plate is to be
cast. The strips d are notched as shown in Figs. 3 and 4 to allow the stereo metal to
flow through. The strips d are preferably kiln dried to prevent the formation of
steam holes. In Fig. 5 which is a cross section shewing the plate a with the strips d
attached to it, there are three of the strips d but more may be used and they should
be preferably placed about an inch apart.
The matrix is made in the usual way but in the position to be occupied by the
illustration, a depression of the size of the picture is made by inserting in the forme
of type a type high block the size of the half tone plate. This depression is partly
cut away leaving an aperture in the matrix with just sufficient margin all round the
aperture for the thick part of the half tone plate to rest upon.
The matrix is then placed in the casting box and the prepared plate a is inserted
face down in the depression formed for it as above described. Then when the box
is closed, the strips d will press the plate a firmly down upon the matrix.
The stereo metal is then poured into the casting box and flows through the
notches in the strips d and around the bent margins a¹ thus holding the platen a
firmly in its place.
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
An improved method for the production of pictorial illustrations by which an
impression can be taken direct from a half tone engraving introduced into a stereo
plate and printed on a rotary or flat machine consisting in forming the half tone
plate with a margin the corners being cut off and the margins turned down, placing
the plate between dies by which the desired curvature is imparted to it, attaching
notched strips of wood to the back thereof to make up the requisite thickness,

page_text: inserting the plate face down in the casting box in a depression formed for it in the
matrix, and running in the stereo metal so as to hold the half tone plate in place
ready for printing substantially as described.
Dated thin noth dor of Anvil 1908
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.