FASTENING STEREOTYPES TO PRINTING BLOCKS
Year: 1885

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I HENRI CORSAIN, of 73 Rue du Château, Paris, in the Republic of France,
typographer do hereby declare the nature of my invention for FASTENING
STEREOTYPES TO PRINTING BLOCKS to be as follows:- :
"
In this system which considerably facilitates the making up of typographic
formes, the stereotypes are moveable instead of being nailed to the blocks. They
are of exactly the same length and width as the latter and are chamfered at the
edge. Between the blocks are placed; back to back, pairs of special pieces called
Lingots-Griffes or "Catch Clumps" which constitute the chief feature of the
invention The thickness of each pair of clumps determines without any preliminary
trial, the width of the space between the blocks in each line. The catch clump is
a parallelopided made of cast iron, wrought iron, steel or any other metal, which is
placed up on edge and lengthwise about each end of the long sides of the blocks
and close against them.
In the face of the catch clump is cut a slide of dovetail shape in which works up
and down a small plate the upper edge of which is bent forward and presses upon
the chamfer of the stereotype and fixes it firmly.
On the back of this plate is rivetted a small spring the free end of which is bent
back Above the spring there is a small round hole running through the plate In
the middle part of the slide is cut a groove somewhat wider than the spring and
the bottom of the groove is indented transversally, saw teeth fashion. When the
catch plate is being pushed home the free end of the spring passes over the notches
until the catch presses upon the bevelled edge of the stereotype, the spring then
holds fast and prevents the plate from rising up, so that the stereotype is firmly
fixed to the block.
To take out the catch plate a spatula shaped instrument is used, bearing a small
stud on one side of the blade. The instrument is pushed down the slide in the
clump taking care that the stud should be turned towards the plate, the blade
presses the spring against the plate, thus releasing it from the notches, the stud
enters the hole in the plate and on the instrument being withdrawn it brings the
plate out with the utmost facility.
IL 1

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I HENRI CORSAIN, of 73 Rue du Château, Paris in the Republic of France,
Typographer 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:-
According to my invention which considerably facilitates the making up of
typographic formes, the stereotypes are movable instead of being nailed to the
blocks or.beds. They are of exactly the same length and width as the latter and
are chamfered at the edge. Between the blocks are placed, back to back, pairs of
special pieces each composed of a clump and of a catch or clip and which I call
Lingots-Griffes" or "Catch clumps;" these devices constitute the chief feature of
the invention. The thickness of each pair of clumps. determines without any
preliminary trial, the width of the spaces or gulleys between the blocks. The
clumps are parallelopideds made of cast iron, wrought iron, steel or other metal, and
are placed on edge and lengthwise near each end of the long sides of the blocks and
close against them.
In the face of each clump is a dovetail guide in which the catch can be moved
up and down. This catch is a small plate the upper edge of which is bent forward
and when the plate is pushed down home presses upon the chamfer of the stereotype
and fixes it firmly. In the middle of the dovetail guide in the clump there is a
groove in which a spring is rivetted its free end being bent forward and the part
of the catch plate which comes opposite the spring is serrated transversely. When
the catch plate is being pushed home the free end of the spring passes over the
serrations until the catch presses upon the bevelled edge of the stereotype, the
spring then holds fast and prevents the plate from rising up, so that the stereotype
is firmly fixed to the block.
The annexed drawings represent a catch clump constructed according to my
invention. Figure 1 is a face view, and Figure 2 a plan of the clump without the
catch plate. Figure 3 is a transverse section, and Figure 3 a plan of the clump
with the catch plate in place. Figure 4 is a face view, Figure 5 a side view, and
Figure 6 a back view of the catch plate. a is the clump, b the dovetail guide
therein, d the groove in the middle of the guide, & the 'spring fitted therein, c the
catch plate, c¹ the bent-forward upper edge of same constituting the catch-proper,
f the serrated part of the catch plate.
•
In practice the forme is locked up after the blocks for the stereotypes and the
clumps have been put in place, the stereotypes are then placed on the blocks, and
the catch plates are pushed down into the clumps until their catches press upon the
chamfered edges of the stereotypes.
To take out the catch plate a spatula shaped instrument, such as that shown in
Figure 7, is used, bearing a small stud on one side of the blade h. The instrument
is pushed down the guide b in the clump with the stud turned towards the plate o

page_text: the blade presses the spring e away from the plate, thus releasing it from the
serrations f, and the stud / enters a hole g in the plate and, on the instrument being
withdrawn, it brings the plate c out with the utmost facility.
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
The catch clumps or devices constructed substantially as hereinbefore described
for fastening stereotypes to printing blocks.