Improvements in and relating to the Securing of Stereotype Plates on Blocks for Printing Machines.
Year: 1895

page_text: Date of Application, 4th Nov., 1895
Complete Specification Left, 4th Aug., 1896-Accepted, 12th Sept., 1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Securing of Stereotype Plates
on Blocks for Printing Machines.
•
I, DAVID WRIGHT, of 1 Munro Place, in the City and County of Edinburgh,
Printers Machineman, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to improved devices for securing stereotype plates
on blocks for printing machines and whereby each block can be quickly adjusted
to secure any size of plate, and any particular block can be adjusted without
disturbing any of the other blocks in the chase, while squaring up "forme" and
registering can be effected without unlocking.
29
According to my improvements, I form the wooden block with a series of recessed
or rectangular cut away parts at spaced distances as two on each side and one at
each end; while I bind the outer edge or surfaces with screwed or vertical plates.
In the recessed parts of block I fit screw threaded spindles or pins having their
ends secured respectively in the metal binding plates and in the body of the block.
On these spindles I loosely. mount transverse plates having holes or eyes at their
centre and preferably having curved or bent top edges to grip the edges of the
stereotype plate; while these transverse plates would be locked in position by
tightening up screw nuts mounted on the screw threaded spindles.
To make up the space between these transverse plates and the surface of block
in the recessed parts, portable wedges would be mounted over spindles between
block and transverse plates, so that the latter may be accurately tightened up by
the screw nuts.
It will be thus seen that for removing or replacing a stereotype plate, only the
screw nuts require to be adjusted; while the wedges would be introduced to suit
the size of stereotype plate desired.
Dated this 2nd day of November 1895.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.
Improvements in and relating to the Securing of Stereotype Plates
on Blocks for Printing Machines.
1, DAVID WRIGHT, of 1 Munro Place, in the City and County of Edinburgh,
Printers Machineman, do hereby declare the nature of my invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement in writing that is to say :-
This invention has reference to improved devices for securing stereotype plates
on blocks for printing machines and whereby each block can be quickly adjusted
to secure any size of plate and any particular block can be adjusted without
disturbing any of the other blocks in the chase; while squaring up
"forme "and
"registering." can be effected without unlocking.

page_text: And in order that my said invention and the manner of carrying same into
practice may be properly understood, I have hereunto appended an explanatory
sheet of drawings in which
Figure 1 represents a plan view partly broken away of a stereotype plate as
secured on a block in accordance with my improvements, and Figure 2 is a side
elevation of same.
Figures 3 and 4 show detached views of the locking plates and wedges respectively,
and Figure 5 a similar view of the spring alternatively used instead of the
wedges.
While Figure 6 is a view of the tightening up screw key or spanner.
Referring to these drawings:
According to my improvements, I form the wooden, or it might be metal block A
with a series of recessed or rectangular cut away parts A' at spaced distances as
two on each side and one at each end, while I bind the outer edge or surfaces with
screwed on vertical plates A. In the recessed parts A¹ of block A. I fit screw
threaded spindles or pins B having their ends secured respectively in the metal
binding plates A' and in the body of the block A. On these spindles B I loosely
mount transverse plates a having holes or eyes a¹ at their centre and preferably
having curved or bent top edges a' in the side plates to grip the edges of the
stereotype plate C and end projections a³ to slide in grooves in block A at the
recessed parts A'; while these transverse plates a would be locked in position by
tightening up screw nuts B¹ mounted on the screw threaded spindles.
b
To make up the space between these transverse plates a and the surface of
block A in the recessed parts A¹ portable wedges 6 may be formed with slit parts b¹
and be mounted over spindles B¹ between block A and transverse plates a, so that
the latter may be accurately tightened up by the screw nuts B' and hand screw
key B³.
It will be thus seen that for removing or replacing a stereotype plate C, ouly
the screw nuts B₁ require to be adjusted; while the wedges b would be introduced
to suit the size of stereotype plate C desired.
Instead of using wedges b, springs c may be mounted on the spindles B, to bear
between a cavity c¹ formed in block A and the plates a so as to give the adjustment
of pressure for the plates a to suit the size of stereotype C to be used.
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 is :-
The securing of stereotype plates on blocks for printing machines substantially
as and in the manner herein described in reference to and shown in the
accompanying drawings.
Dated the 1st day of August 1896.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.