IMPROVE- MENTS IN THE PRODUCTION OF STEREOTYPE PLATES FOR ROTARY PRINTING MACHINES AND IN APPARATUS EMPLOYED THEREIN
Year: 1883

page_text: LETTERS PATENT to Albert Sauvée, Civil Engineer, of 22 Parliament Street,
Westminster in the County of Middlesex for an Invention of "IMPROVE-
MENTS IN THE PRODUCTION OF STEREOTYPE PLATES FOR ROTARY PRINTING
MACHINES AND IN APPARATUS EMPLOYED THEREIN "
communicated to him
from abroad by Hippolyte Marinoni and Jules Michaud of Paris, France
PROVISIONAL SPECIFICATION left by the said Albert Sauvée at the Office
of the Commissioners of Patents on the 22nd March 1883.
"
ALBERT SAUVÉE, Civil Engineer of 22 Parliament Street, Westminster in the
County of Middlesex " IMPROVEMENTS IN THE PRODUCTION OF STEREOTYPE
PLATES FOR ROTARY PRINTING MACHINES AND IN APPARATUS EMPLOYED THEREIN
[communicated to him from abroad by Hippolyte Marinoni and Jules Michaud
of Paris, France]
Stereo plates for Rotary Printing Machines are generally cast in a curved Casting
Box which is so constructed that the plate is cast with a bevel at each end. The
jet is cut off either by a cutting tool or circular saw when the Casting Box is open
and the plate is laying tight on the cover.
The first part of this invention consists in casting the plate as usual with a bevel
at each end, but with a disposition of movable studs which keep the plate tight to
the cover when opening the box, but which are forced down by the pressing action
of the cover on the rest when thrown fully back. To obtain this a brass mouth
piece, one side of which is tangential to the outer circumference of the cover is
screwed fast to the cover. In this brass plate 2, 3 or more holes are provided
through which the movable studs project and to produce the backwards and
forwards motion of these studs I connect them by means of short links to an axis
which is slightly excentric with the axis round which the cover revolves. The
action of opening the cover pulls the studs backwards and releases the plate
instantly and allows of its being removed and the Box is ready at once for another
casting.

page_text: The second part of this invention consists in taking the plate at once to a
combined Plate Boring and Jet Cutting Machine in which the action of boring
the Plate and cutting off the jet are done at one operation.
I add to the usual Plate Boring Machine on the top at back a self acting slide
rest which carries a revolving saw. The working gear is so combined that as soon
as the borer or scraper has begun to revolve and to press the Plate against the
back of the boring Machine the saw is set in motion and at the same time travels
along the length of the Boring Machine, cutting off the jet.
Thirdly there are stops in the Boring Machine which are movable so as to be
easily regulated to take and cut different sized plates for printing various sizes
round the cylinder without in any way, altering the Casting Box
To obtain this, the stops which are usually bolted on the lower edge of the
Boring Machine and against which the plate bears are mounted on long bolts
which allow of the stops being lowered or raised as required. To lower them a
movable strip is removed from under the stops and the stops are pressed or screwed
down by any suitable means. To raise them the stops are unscrewed and a strip
of the required thickness introduced between the stops and the lower edge of the
Machine.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Albert Sauvée in the Great Seal Patent Office on the 21st September
1883.
"
ALBERT SAUVÉE of 22 Parliament Street, Westminster in the County of
Middlesex. "IMPROVEMENTS IN THE PRODUCTION OF STEREOTYPE PLATES FOR
ROTARY PRINTING MACHINES AND IN APPARATUS EMPLOYED THEREIN [com-
municated to him from abroad by Hippolyte Marinoni and Jules Michaud of
Paris, France]
Stereo Plates for Rotary Printing Machines are generally cast in a curved
Casting Box which is so constructed that the plate is cast with a bevel at each end.
The jet is cut off either by a cutting tool or circular saw when the Casting Box is
open and the plate is laying tight on the cover.
The first part of this invention consists in casting the plate as usual with a bevel
at each end, but with a disposition of movable studs whieh keep the plate tight
to the cover when opening the box, but which are forced down by the pressing
action of the cover on the rest when thrown fully back. To obtain this a brass
mouth piece, one side of which is tangential to the outer circumference of the
cover is screwed fast to the cover. In this brass plate 2, 3 or more holes are
provided through which the movable studs project and to produce the backwards
and forwards motion of these studs I connect them by means of short links to an
axis which is slightly excentric with the axis round which the cover revolves.
The action of opening the cover pulls the studs backwards and releases the plate
instantly and allows of its being removed and the box is ready at once for another
casting.
The second part of this invention consists in taking the plate at once to a
combined plate Boring and jet Cutting Machine in which the action of boring
the plate and cutting off the jet are done at one operation.
I add to the usual plate Boring Machine on the top at back a self-acting slide
rest which carries a revolving saw. The working gear is so combined that as soon
as the borer or scraper has begun to revolve and to press the plate against the
back of the boring machine the saw is set in motion and at the same time travels
along the length of the boring machine, cutting off the jet.
Thirdly there are stops in the Boring Machine which are movable so as to be
easily regulated to take and cut different sized plates for printing various sizes
round the cylinder without in any way altering the Casting Box.
To obtain this, the stops which are usually bolted on the lower edge of the
Boring Machine and against which the plate bears are mounted on long bolts which
allow of the stops being lowered or raised as required. To lower them a movable
strip is removed from under the stops and the stops are pressed or screwed down
by any suitable means. To raise then the stops are unscrewed and a strip of the
required thickness introduced between the stops and the lower edge of the
Machine.
In witness whereof I the said Albert Sauvée have hereunto set my hand and
seal this twenty-first day of September One thousand eight hundred and eighty
three