Improved Chase and Printing Machine Attachment for Use in Printing from Polychromatic Blocks.
Year: 1895

page_text: Date of Application, 23rd Nov., 1895
Complete Specification Left, 14th Sept., 1896-Accepted, 14th Nov., 1896
PROVISIONAL SPECIFICATION.
Improved Chase and Printing Machine Attachment for Use in
Printing from Polychromatic Blocks.
We, HENRY DE MONTIN of 54 Lordship Lane Wood Green in the County of
Middlesex, Printer and OLIVER BRYANT of 19 Lyndhurst Road Peckham in the
County of London, Accountant do hereby declare the nature of this invention to
be as follows, that is to say :-
This improvement is intended for use with printing machines employed in
printing from a block of composition containing throughout its depth the pattern
or picture to be produced the surface of which block gradually wears away as
prints are taken from it; and is more especially applicable to the polychrome
printing process and machines the subject of English Patents Nos. 13874/87,
18664/92, 22,043/92 and 3907/94.
The object of the improvement is to support the sides of the block printed
from; as it is found there is a tendency for the block to be rolled out during
printing to a greater extent at the edges than at the centre thus distorting the
pattern and causing irregularity in the sharpness of the detail.
To this end a frame or chase is used through which the block of colour is forced
as required by means of the rising bed in the coffin of the printing machine. The
sides of this frame or chase are preferably of L or triangular section the top edge
being bevelled to as narrow a surface as is compatible with strength, so that the
supporting sides may be brought as nearly to the surface of the composition block
as possible without danger of the paper being soiled by contact with the frame or
chase.
In the coffin of the machine I place two bars to carry two opposite sides of the
frame or chase. These two bars may also support two other bars for giving
additional support to the alternate opposite sides of the frame or chase. These
bars are all sufficiently far from the composition block and sufficiently below its
surface to avoid soiling the paper being printed.
The bars are adjustable in the coffin of the machine, so that one set of bars
suits chases of all sizes required for the different kinds of paper used.
The bars are securely fixed in and to the coffin of the machine and the chase is
securely fixed to the bars.
The sides of the block of composition can by these means be supported whatever
its position in the coffin of the machine and whatever the size of chase used.
Dated this 22nd day of November 1895.

page_text: Improved Chase and Printing Machine Attachment for Use in
Printing from Polychromatic Blocks.
We HENRY DE MONTIN of 54 Lordship Lane, Wood Green, in the County of
Middlesex, Printer and OLIVER BRYANT of 19 Lyndhurst Road, Peckham, in
the County of London Accountant 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, that is to say:--
This improvement is intended for use with printing machines employed in
printing from a block of composition containing throughout its depth the pattern
or picture to be produced, the surface of which block gradually wears away as
prints are taken from it, and is more especially applicable to the polychrome
printing process and machines the subject of English Patents Nos. 9870/94
3907/94 22043/92 18664/92 and 13874/87.
The object of the improvement is to support the sides of the block printed
from; as it is found there is a tendency for the block to be rolled out during
printing to a greater extent at the edges than at the centre, thus distorting the
pattern and causing irregularity in the sharpness of detail.
To this end a frame or chase is used through which the block of colour is forced
as required by means of the rising bed in the coffin of the printing machine.
The sides of this frame or chase are preferably of L or of triangular section, the
top edge being bevilled to as narrow a surface as is compatible with strength, so
that the supporting sides may be brought as nearly to the surface of the composition
block as possible without danger of the paper being soiled by contact with the
frame or chase.
These
In the coffin of the machine are placed two bars to carry two opposite sides of
the frame or chase. These two bars may also support two other bars for giving
additional support to the alternate opposite sides of the frame or chase.
bars are all sufficiently far from the composition block and sufficiently below its
surface to avoid soiling the paper being printed.
The bars are adjustable in the coffin of the machine, so that one set of bars
suits chases of all sizes required for the different kinds of paper used.
The bars are securely fixed in and to the coffin of the machine and the chase is
securely fixed to the bars.
The sides of the block of composition can by these means be supported whatever
its position in the coffin of the machine and whatever the size of chase used.
DESCRIPTION OF DRAWING.
Fig. 1 is a plan showing part of a printing machine bed with the improved chase
and fittings in the coffin.
Fig. 2 is a cross section of the same.
Fig. 3 is a section showing a method of securing an improved chase made of
L section.
Fig. 4 is a section of one of the bars which support the chase; and shows a
method of attaching the bar to the side of the coffin of the machine.
Fig. 5 is a section of one of the bars which support the chase; and shows part
of the rising bed of the machine, part of the multicolour block and a section of
one of the sides of the chase.
a. b. c. d are the four sides of the chase and may be of the section shown
at c. d. Fig. 1, and 6 Fig. 5; or of the section shown at c. Fig. 3.
e, e¹ are the bars which support the chase.

page_text: fis the multicolour block. g is a board on plate on which ƒ is placed, and
which just fits into the chase. h, is the rising bed of the machine.
i.i. are clips to secure the chase to the bars e. e¹.
j.j. are screws by means of which the bars e. e¹ are adjusted in the coffin to
suit chases of different sizes; the ends of the bars being formed to facilitate such
adjustment.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:-
1. The improved means substantially as herein before described of supporting
the sides of a block of composition used in polychromatic printing.
2. The improved means substantially as herein before described of supporting
a chase in the coffin of a printing machine.
3. The combination of a chase and printing machine attachments for supporting
the same substantially as herein before described for use in printing from poly-
chromatic blocks.
Dated thin 02nd day of A1005
THOS. WILKINS,
Agent for the Applicants.