Improvements in Producing Parti-coloured Prints or Impressions and in Apparatus therefor.
Year: 1889

page_text: Date of Application, 14th Mar., 1889
Complete Specification Left, 3rd May. 1889-Accepted, 13th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in Producing Parti-coloured Prints or Impressions
and in Apparatus therefor.
A communication from abroad by PETER JOSEPH HAASÉ, of Mayence, in the Empire
of Germany, Merchant.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in
the County of Lancaster, and 323 High Holborn in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention to be as follows :-
In order to produce a parti-coloured impression with a letterpress printing
machine or the like, the sheet to be printed had hitherto to bo passed once
through the machine for each different colour employed, or a corresponding
number of blocks had to be made for the colours, with special appliances for the
printing of the same, all of which methods occupy extra time and cause extra
expense.
The object of this invention is to produce in one single impression and with one
and the same block a parti-coloured print. The method is specially applicable for the
production of a coloured print with a black or other border, and in as many colours
às desired.
With this object a porous substance is employed, which may be cut or formed
in the shape of type or portions of a picture and supplied with ink in a peculiar
manner.
The nature of the colours employed for one part must differ from that employed
for the rest of the block, that is to say, if the latter part of the block be supplied
with ordinary black printing ink or other oily substance, the former must be
supplied with water colours or vice versa, so that they will not run into each
other. But if the whole impression consists of coloured letters, this no longer
becomes necessary.
Wood, pumice stone, or preferably the root of the nut tree or rattan is used as
material for the type or picture blocks.
These blocks are placed in a vessel or pan into which colour is placed in a
sufficiently weak or dilute state.
The upper surface of the pan is provided with an opening, large enough to
expose the type or block, through which the porous bodies are inserted sufficiently far
to reach the bottom, in which position they are surrounded and held by a small rim
which takes up the black ink from the ink roller, and thus marks a black border
round the type or picture.
The coloured ink in the pan is sucked up by capillary attraction through the pores of
the material of which the typo is made, and forms, on the surface of the said type or
block, a water or oil colour, which yields the desired impression.
In blocks used for advertisements, the metal rim projects slightly beyond the porous
body, so that the black ink roller only touches the said rim. This latter becomes
covered with black ink and surrounds the water colours on the type or picture,
which water colours do not combine with the black ink. The black and coloured
portions may thus be taken off at one impression, and an advertisement in colours can
be introduced at one impression in the middle of an otherwise black impression.
-

page_text: COMPLETE SPECIFICATION.
Improvements in Producing Parti-coloured Prints or Impressions
and in Apparatus therefor.
A communication from abroad by PETER JOSEPH HAasé, of Mayence, in the Empire
of Germany, Merchant.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in
the County of Lancaster, and 323 High Holborn, in the County of Middlesex Civil
Engineer, 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 :—
In order to produce a parti-coloured impression with a letterpress printing
machine or the like, the sheet to be printed had hitherto to be passed once
through the machine for each different colour employed, or a corresponding
number of blocks had to be made for the colours, with special appliances for the
printing of the same, all of which methods occupy extra time and cause extra
expense.
The object of this invention is to produce in one single impression and with
one and the same block a parti-coloured print. The netliod is specially applicable
for the production of a coloured print with a black or other border, and in as many
colours as desired.
With this object a porous substance is employed, which may be cut or formed in
the shape of type or portions of a picture and supplied with ink in a peculiar manner
as hereinafter described.
The nature of the colours employed for one say the porous part must differ from
that employed for the rest of the block, that is to say, if the latter part of the block
he supplied with ordinary black printing ink or other oily substance, the former or
porous portion must be supplied with water colours or vice versa, so that they will not
run into each other. But if the whole impression consists of coloured letters, this
no longer becomes necessary.
Wood, pumice stone, or preferably the root of the nut tree or rattan is used as
material for the type or picture blocks.
These blocks are placed in a vessel or pan into which colour is placed in a sufficiently
weak or dilute state. The different colours in the pan may be kept separate by
means of suitable divisions, or separate blocks may be grouped together.
The upper surface of the pan provided with an opening, large enough to expose
the type or block, through which the porous bodies are inserted sufficiently far to
reach the bottom, in which position they are surrounded and held by a small rim
which takes up the black ink from the ink roller, and thus marks a black border round
the type or picture.
The coloured ink in the pan is sucked up by capillary attraction through the pores
of the material of which the type is made, and forms, on the surface of the said type
or block, a water or oil colour, which yields the desired impression.
In blocks used for advertisements, the metal rim projects slightly beyond the
porous body, so that the black ink roller only touches the said rim. This latter
becomes covered with black ink and surrounds the water colours on the type or
pioture, which water colours do not combine with the black ink. The black and
coloured portions may thus be taken off at one impressiou, and an advertisements in
colours can be introduced at one impression in the middle of an otherwise black
impression.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I declare that what I claim is :-
1. The process of printing in colours which consists in the use of porous material

page_text: to form the type or block to which the colour is applied in such a manner as to he
drawn up by capillary attraction through the said porous material to the upper
printing surface, substantially as described and for the purposes set forth.
2. A type or block for printing in colours, composed wholly or partially of porous
material arranged in such a manner as to receive the coloured ink and draw up the
same by capillary attraction to the printing surface, substantially as described and
shown.
LADA
WM. P. THOMPSON & Co.,
Agents for the Applicant.