Improvements in Casting Boxes for Producing Flat Stereotype Plates for Printing Machines.
Year: 1895

page_text: Date of Application, 19th June, 1895
•
Complete Specification Left, 16th M r.,.
, 1896-Accepted, 25th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in Casting Boxes for Producing Flat Stereotype
Plates for Printing Machines.
I, ALBERT SAUVÉE, of 22 Parliament Street, Westminster, in the County of
Middlesex, Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved casting box for producing flat printing
plates.
In casting boxes as hitherto constructed the end of the space between the
bottom of such box (in which the matrix of the plate to be produced or an
electrotype which requires backing is placed) and the cover of such box, which
is opposite the end where the metal is to be run in has been closed by a gauge.
In practice it is found that this arrangement is open to the objection that in pouring
in the type metal the air contained in the enclosed space is sometimes unable
to escape entirely, and may consequently produce blemishes or faults in the
printing surface of the stereotype plate produced.
In order to overcome this difficulty I form the bottom and the cover so that the
end of each extends upwards beyond the point at which the end of the plate to
be produced, which is opposite to that where the metal is run. in, terminates, and
I leave both ends of the space between the cover and the bottom open. The
extension of the end of the cover and bottom opposite to that at which the metal
is run in is preferably such as to bring such end at approximately the same level
as the end where the metal is run in.
When the metal is run in to the space between the cover and bottom the air
therein is driven before the metal, and is free to escape from the further end of the
casting box, which as above stated is left open, so that no air will be confined
within the casting space, and blemishes or defects in the printing plates due to this
cause will consequently be avoided.
After the plate has been cast the cover is removed from the bottom in any
suitable manner, and the plate produced may have the runner which has been
formed at each end removed by any suitable means.
Dated this 19th day of June 1895
ALLISON BROS.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Casting Boxes for Producing Flat Stereotype.
Plates for Printing Machines.
I
I, ALBERT SAUVÉE, of 22 Parliament Street, Westminster, in the County of
Middlesex, Civil 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 a modification of the casting box described in

page_text: the Specification of my prior Patent No. 2539 dated 5th February 1895, the object
being to adapt such casting boxes for the production of flat printing plates.
In casting boxes as hitherto constructed the end of the space between the
bottom of such box (in which the matrix of the plate to be produced or an
electrotype which requires backing is placed) and the cover of such box, which is
opposite the end where the metal is to be run in has been closed by a gauge. In
practice it is found that this arrangement is open to the objection that in pouring
in the type metal the air contained in the enclosed space is sometimes unable to
escape entirely, and may consequently produce blemishes or faults in the printing
surface of the stereotype plate produced.
In order to overcome this difficulty I form the bottom and the cover so that the
end of each extends upwards beyond the point at which the end of the plate to be
produced, which is opposite to that where the metal is run in, terminates, and
I leave both ends of the space between the cover and the bottom open. The
extension of the end of the cover and bottom opposite to that at which the metal is
run in is preferably such as to bring such end at approximately the same level as
the end where the metal is run in.
When the metal is run into the space between the cover and the bottom the air
therein is driven before the metal, and is free to escape from the further end of the
casting box, which as above stated is left open, so that no air will be confined
within the casting space, and blemishes or defects in the printing plates due to this
cause will consequently be avoided.
After the plate has been cast the cover is removed from the bottom in any
suitable manner, and the plate produced may have the runner which has been
formed at each end removed by any suitable means.
In order to enable my invention to be fully understood I will now proceed to
describe same by the aid of the accompanying drawings, which show in end and
side elevation respectively the essential parts of a casting box constructed according
to such invention.
A is the bottom of the casting box, and B the cover of same, the space a, b,
being left between the two to receive the type metal to form the flat printing plate
to be produced, and in which space the matrix is arranged on the upper surface of
the bottom A; or an electro to be backed may take the place of such matrix.
The cover B may be pivotted to the bottom A at the point D, upon which it can
be turned when requisite to remove the cover from the bottom; or such cover may
be removed by a vertical movement by means of a screw working through a nut,
or by any other suitable means.
It will be seen that the space a, b, between the cover B and bottom A is
both ends, and that the end b of such cover and bottom extends upwards beyond
open at
the end of the flat matrix or electro so that when the metal is run into the
space a, b, at point a, the air contained in such space will be driven in front of such
metal, and escape at b, so that the chance of any air becoming imprisoned in the
metal, and so producing blemishes or faults in the plate, is avoided.
The lever or handle E serves to open the casting box by causing the cover B to
turn on its pivot D when it is desired; F is a clamping device serving to hold the
cover and the bottom of the box firmly together when the casting box is closed.
A gauge might be inserted in the open end 6 of the space a, b, immediately after
the metal is poured in and any imprisoned air has had an opportunity of escaping,
such gauge serving as a block or stop so as to prevent the formation of a runner at
this end of the printing plate.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In a casting box for producing flat printing plates, extending the cover and the
bottom of such box at that end which is opposite the end where the metal to
produce the plate is poured in unward harand the naint at high the plata

page_text: terminates, and leaving this end of the space between the cover and the bottom
open, so as to allow air to escape freely from such open end, substantially as and
for the purpose specified.
ALLISON BROS.,
Agents for the Applicant.