Improvements in or Applicable to the Colour-supplying Rollers of Printing Machines.
Year: 1897

page_text: Improvements in or Applicable to the Colour-supplying Rollers of
Printing Machines.
We GEORGE SCHUMACHER, of 22, Acomb Street, Moss Side, Manchester, Chemist,
and CHAS. MACINTOSH & Co. LIMITED, of Cambridge Street, Manchester, India-
rubber Manufacturers, do hereby declare the nature of this invention to be as
follows:-
Our said invention relates to improvements in or applicable to the rollers which
feed or supply colour or pigment to the printing rollers or cylinders of printing
machines in which the impression is produced from a pattern engraved on a
printing roller.
As heretofore constructed the surface of such feeding rollers has been made
plain and in cases where it has been necessary to supply the printing rollers with
greater quantity of pigment it has been usual to employ brushes.
According to our said invention we use in lieu of a feeding roller having a
smooth surface a roller formed or provided with a surface of rubber or other
suitable similar material which is corrugated pressed engraved embossed or other-
wise treated or prepared so as to produce alternating elevations and depressions
in or on the working surface of the feed roller.
The object of such a diversified surface is to produce a roller which shall be
more effective for the purpose of taking up and delivering the pigment to the
engraving roller than the rollers at present in use.
Dated this 19th day of August 1897.
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicants.
Improvements in or Applicable to the Colour-supplying Rollers of
Printing Machines.
We GEORGE SCHUMACHER, of 22, Acomb Street, Moss Side, Manchester, Chemist,
and CHAS. MACINTOSH & Co. LIMITED, of Cambridge Street, Manchester, India-
rubber Manufacturers, 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:-
Our said invention relates to improvements in or applicable to the rollers which
feed or supply colour or pigment to the printing rollers or cylinders of printing

page_text: machines in which the impression is produced from a pattern engraved on a
printing roller.
As heretofore constructed the surface of such feeding rollers has been made
plain and in cases where it has been necessary to supply the printing rollers with
a greater quantity of pigment it has been usual to employ brushes.
According to our said invention we use in lieu of a feeding roller having a
smooth surface a roller formed or provided with a surface of rubber or other
suitable similar material which is corrugated pressed engraved embossed or other-
wise treated or prepared so as to produce alternating elevations and depressions
in or on the working surface of the feed roller.
The object of such a diversified surface is to produce a roller which shall be
more effective for the purpose of taking up and delivering the pigment to the
engraving roller than the rollers at present in use.
In the accompanying drawing which shows a roller made in accordance with
our said invention
Fig. 1 is a longitudinal section.
Fig. 2 is a cross section.
Fig. 3 is an external elevation.
The roller a of wood or other suitable material is provided with journals or
necks in the usual manner. b is a sheath or covering of rubber having elevations
and depressions moulded therein as hereinbefore described. The sheath b may
be formed as a tube to be drawn on to the roller or it may be formed in sheets
or rings and be attached to the roller by rubber solution or other suitable cement.
The pattern on the covering b or the depth of the depressions may be varied as
desired to hold more or less colour.
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:-
A colour supplying roller for printing machines having an external covering
of indiarubber or other suitable similar material having corrugations or the like
alternating depressions and elevations substantially as and for the purpose set
forth.