Improvements in the Production of Stereotype Plates.
Year: 1889

page_text: Date of Application, 7th Jan., 1889
Complete Specification Left, 7th Oct., 1889-Accepted, 9th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Production of Stereotype Plates.
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:-
The object of my invention is to enable stereotype plates in which electro-zinc
stereo process or other engraved blocks or plates are required to be inserted in a
much more efficient and reliable manner than hitherto.
In order to effect this I place in the form to be stereotyped a type high dummy
corresponding in size to the engraved block or plate to be inserted in the Stereo
Plate. When the matrix is baked the portion corresponding to the dummy is partly
cut away and replaced by a piece of paper stuck to the back. The Matrix is put in
the Casting Box and I then take the engraved block or plate to be inserted which bas
already been curved to the circumference of the printing cylinder and place it on the
paper covering the hole left in the matrix. On the back of the engraved block or
plate 1 affix by screws, solder, or any other suitable means a number of small
springs.
These springs which may be made of any desired form are so arranged that when
the Casting Box is shut the cover of same bears against the springs thus keeping
the engraved block or plate firmly in position against the sheet of paper while the
Stereo metal is running on top.
When the stereotype plate is removed from the box the engraved block or plate will
be affixed to the face of the Stereo plate the springs on the back of the plate being
embedded in the metal.
Dated this 7th day of January 1889.
ALLISON BROS.,
Agents for the Applicant.
COMPLETE SPECIFICATION..
Improvements in the Production of Stereotype Plates.
.I, ALBERT SAUVEE, 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 object of my invention is to produce stereotype plates in which electro-zinc
stereo process or other engraved blocks or plates are required to be inserted, in a
much more efficient and reliable manner than hitherto.
In order to effect this I place in the form to be stereotyped a type high dummy
corresponding in size to the engraved block or plate to be inserted in the stereo
plate. When the matrix is baked the portion corresponding to the dummy is partly
cut away and replaced by a piece of paper stuck to the back.
The accompanying drawing is a longitudinal section of a casting box, showing the
method in which the stereotype plates are produced with the engraved blocks or
plates inserted therein.
The matrix A is put in the casting box B, and I then take the engraved block or
plate C to be inserted, and which has already been curved to the circumference of the
printing cylinder, and place it on the paper covering the hole left in the matrix A.
On the back of the engraved block or plate C I affix by screws, solder, or any other
suitable means a number of small springs D.

page_text: These springs D which may be made of any desired form are so arranged that
when the casting box B is shut the cover E of same bears against the springs D thus
keeping the engraved block or plate C firmly in position against the sheet of paper
while the stereo metal F is running on top.
When the stereotype plate F is removed from the box the engraved block or plate C
will be affixed to the face of the stereo plate F the springs D on the back of the plate
being embedded in the metal.
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
In the production of stereotype plates with engraved blocks or plates inserted
therein, the employment of springs secured to the back of the engraved blocks or
plates, and against which the cover of the casting box is caused to bear when the
box is closed, so as to hold such blocks or plates in position while the stereotype plate
is being cast, and to secure same thereto by the springs becoming embedded in the
metal of the stereotype plates.
Dated this 2nd day of October 1889.
ALLISON BROS.,
Agents for the Applicant.