IMPROVEMENTS IN THE MEANS OF SECURING STEREOTYPE PLATES WHICH ARE CAST SEPARATELY THEIR BEDS
Year: 1880

page_text: LETTERS PATENT to Edmund Dawson Rogers, of Church End, Finchley, in the
County of Middlesex, for an Invention of "IMPROVEMENTS IN THE MEANS
OF SECURING STEREOTYPE PLATES WHICH ARE CAST SEPARATELY
THEIR BEDS."
FROM
PROVISIONAL SPECIFICATION left by the said Edmund Dawson Rogers
at the Office of the Commissioners of Patents on the 4th June 1880.
EDMUND DAWSON ROGERS, of Church End, Finchley, in the County of Middlesex.
"IMPROVEMENTS IN THE MEANS OF SECURING STEREOTYPE PLATES WHICH ARE
CAST SEPARATELY FROM THEIR BEDS."
The object of the first part of my Invention is to make stereotype plates and
their beds in such manner that the plates can be placed and secured on the beds
without necessitating an inconvenient disturbance of adjoining pages or columns.
In all the modifications of this part of my Invention, hereinafter described, the plates
are placed on the beds by a vertical or oblique downward motion, and are locked
up by the ordinary column rules or other furniture of sufficient height.
According to one modification I form the plate with vertical flanges along its
edges, and I make the sides of the bed with corresponding recesses into which the
said flanges fit. Thus by placing the plate by a vertical downward movement upon
the bed, they will be locked up by the ordinary column rules or other furniture of
sufficient height.
According to another modification I make one of the vertical flanges before
described with a return or inner flange to take into a corresponding recess or groove
in the side of the bed. This inner Hange prevents all liability of the bed falling
away from the plate when the formes are being lifted, or of the plate being pulled
from the bed in the process of printing. In this modification the upper edges of
the bed should be bevelled or chamfered to allow the plate to be placed in position.
According to a third modification, in addition to a flange or flanges at one or both
sides of the plate, I form the plate with a longitudinal oblique rib on its under
side which takes into a corresponding oblique groove in the bed; this rib, like the
inner flange above described, provides a guard against either the bed falling from
the plate when the formes are being lifted, or the plate being pulled from the bed in
the process of printing.
The second part of my Invention consists in securing the plates entirely by the
column rules or other furniture. For this purpose I form longitudinal grooves in
the sides of the column rules or other furniture, and I make the plates with edges to
fit into the grooves.
When the forme is locked up in the ordinary manner the
plates are thus held securely in position. The plates are supported on beds or
blocks of any suitable form, but are not in any way secured to them.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edmund Dawson Rogers in the Great Seal Patent Office on the 4th
December 1880.
EDMUND DAWSON ROGERS, of Church End, Finchley, in the County of Middlesex.
"IMPROVEMENTS IN THE MEANS OF SECURING STEREOTYPE PLATES WHICH ARE
CAST SEPARATELY FROM THEIR BEDS."
The object of the first part of my Invention is to make stereotype plates and
their beds in such manner that the plates can be placed and secured on the beds
without necessitating an inconvenient disturbance of adjoining pages or columns.
In this part of my Invention the plates are placed on the beds by a vertical or
oblique downward motion, and are locked up by the ordinary column rules or other
furniture of sufficient height.
According to one modification which is represented in end view in Figure 1, and
in plan in Figure 2 of the annexed Drawings. I form the plate a with vertical
flanges b, b, along its edges, and I make the sides of the bed c with corresponding
recesses d, d, into which the said flanges fit. Thus by placing the plate a by a
vertical downward movement upon the bed c they will be locked up by the ordinary
column rules or other furniture of sufficient height.
According to a second modification which is represented in Figure 3, in addition
to a flange or flanges b, b, at one or both sides of the plate a I form the plate with a
longitudinal oblique rib on its underside in the manner shown at e, which takes
into a corresponding oblique groove in the bed c; this rib provides a guard against
either the bed falling from the plate when the formes are being lifted, or the plates
being pulled from the bed in the process of printing.
The second part of my Invention consists in securing the plates entirely by the
column rules or other furniture. For this purpose I form longitudinal grooves in
the sides of the column rules or other furniture, and I make the plates with edges
to fit into the grooves. When the forme is locked up in the ordinary manner the
plates are thus held securely in position. The plates are supported on beds or blocks
of any suitable form, but are not in any way secured to them. Figure 4 represents
the manner of securing the plates entirely by column rules in accordance with this
part of my Invention. a is the plate supported by but not secured to a bed or
block c. The plate a has edges, as shown, which take into longitudinal grooves in
the sides of the column rules g, g, and when the forme is locked up in the ordinary
manner the plate is thus held securely in position. The column rules are shown with
grooves at both sides so as to receive the edges of the stereotype plates in the two
adjoining columns.
And having now described the nature of my said Invention and in what manner
the same is to be performed, I declare that I claim,―
The several means of securing stereotype plates, substantially as hereinbefore
described and represented respectively in Figures 1 and 2, Figure 3 and Figure 4
of the annexed Drawings.
In witness whereof, I, the said Edmund Dawson Rogers have hereunto set
my hand and seal, this Twenty-ninth day of November, One thousand
eight hundred and eighty.