Appliances for Fixing Stereo and other Plates for Printing
Year: 1894

page_text: Date of Application, 3rd Oct., 1884
Complete Specification Left,, 2nd July, 1895-Accepted, 3rd Aug.,
1895
PROVISIONAL SPECIFICATION.
Appliances for Fixing Stereo and other Plates for Printing
I, ALEXANDER SINCLAIR COGHILL, of 32 Marlborough Road, Donnybrook, in
the County of Dublin, Ireland, Stationer, do hereby declare the nature of this
invention to be as follows .-
When stereo or other plates, which are comparatively thin, are placed on
foundation blocks so as to raise their printing surfaces to type-height, it is difficult
to fix them so firmly on the blocks as to prevent them from becoming raised or
displaced.
My invention relates to appliances for firmly fixing such stereo or other plates
in formes for printing. For this purpose, 1 provide metal foundation, blocks of
various lengths and widths so that by placing numbers of these side by side and
end to end can make up the area of the stereo or other plate which is to be fixed.
All these blocks are of the same height which is that of a type less, the thickness
of the stereo or other plate.
Every block has a groove along its sides and ends about half way in the height
of the block all these, grooves being equal in shape and position. I provide also
strips of metal which when placed on edge.are nearly type height the upper edge of
each being bent a little over so as to form, a hook to catch over the edge of a stereo
or other plate. Each of those strips is formed with a rib which fits into, the groove
of the foundation blocks.
Thus when a stereo or other plate is laid on the blocks, these strips are placed
wholly or partly along its. sides hooking over its edges and are themselves held
down by the engagement of then ribs in the grooves of the blocks.
When the forme is locked up, the strips, being held finly, serve to hold the
stereo or other plate firmly down on the foundation blocks
The upper edges of 'the strips, may be formed.so as to print rules as well as to
hook the stereo plates, and some cases they may be made with hooks and ribs
on each side so as to secure plates on each hand.
Dated this 3rd day, of October 1894.
ABEL & IMRAY,
Agents for the Applicant
,COMPLETE, SPECIFICATION.
Appliances for Fixing Stereo and other Plates for Printing.
.1, ALEXANDER SINCLAIR, COGHILL, of 32 Marlborough Road, Donny brook, in
the County of Dublin, Ireland, Stationer, 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:-
When stereo or other plates, which are comparatively thin, are placed on
foundation blocks so as to raise then printing sui faces to type-height, it is difficult
to fix them so firmly on the blocks as to provent them from becoming raised or
displaced.
My invention relates to appliances for firmly fixing such stereo or other plates
in formes for printing. For this purpose I provide metal foundation blocks of

page_text: various lengths and widths so that by placing numbers of these side by side and
end to end I can make up the area of the stereo on other plate which is to be fixed.
All these blocks are of the same height which is that of a type less the thickness
of the stereo or other plate.
Every block has a groove along its sides and ends about half way in the height
of the block all these grooves being equal in shape and position. I provide also
strips of inetal which when placed on edge are nearly type height the upper
edge of each being bent a little over so as to form a hook to catch over the edge of
a stereo or other plate Each of those strips is formed with a rib which fits into
the groove of the foundation blocks.
Thus when a stereo or other plate is laid on the blocks, these strips are placed
wholly or partly along its sides hooking over its edges and are themselves held
down by the engagement of their ribs in the grooves of the blocks
When the forme is locked up, the strips, being held firmly, serve to hold the
stereo or other plate firmly down on the foundation blocks.
The upper edges of the strips may be formed so as to print rules as well as to
hook the stereo plates, and in some cases they may be made with hooks and ribs
on each side so as to secure plates on each hand.
Fig. 1 of the accompanying drawings shews a stereo or other printing plate A
supported on foundation blocks B of the kind described above, and held down by
the marginal strips C which are bent over as hooks engaging the edges of the
plate A. The blocks B are of different sizes put together in sufficient number to
make up the area of the forme Between the separate blocks are placed pieces D
of various thickness having beads projecting on both sides.into the grooves of the
blocks; also pieces E with the bead on one side and the groove on the other side
may be introduced where required. The marginal strips C may be made as shown
in Fig. 2 with the upper edge formed to print a rule, and under st a notch to
receive the edge of the plate A. Or a strip F for printing the rule may be merely
placed beside the hook strip C as shewn in Fig. 3. For holding the angles of the
plate, angle hook pieces G shewn in Fig 4 may be used, but generally the plate A
may be held with sufficient firmness by hook strips C along the sides. As a con-
venient way of making the block piece B which are always rectangular of various
shapes and sizes, I put together as shewn in Fig. 5, four angle pieces II, one of
which is shewn in perspective in Fig. 6. Each has along its one side a groove,
and along its other side a bead such as are to be formed in the blocks B.
These four pieces can be slid into various relative positions, and being placed
between a suitable base plate and cover plate, can form a rectangular mould into
which fused metal such as type metal may be poured to cast the blocks B. For
the sake of lightness and to economise metal, I prefer to make the blocks B with a
hollow or several hollows as shewn in Fig. 1. In order to produce these it is only
necessary to place core blocks of suitable form in the moulds.
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 18 -
The combination of laterally grooved blocks such as B and laterally beaded
6lling pieces such as D and E put together to make up a foundation for a stereo or
other printing plate, with laterally beaded stups such as C hooked to engage the
edges of the plate, substantially as described.
ABEL & IMRAY,
Agents for Applicant.