Improvements in Printing upon Calico and other Woven Fabrics.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
Improvements in Printing upon Calico and other Woven Fabrics.
We EDMUND POTTER AND COMPANY LIMITED and JOHN BARR Calico
Printers, of Dinting Vale, in the County of Derby, do hereby declare the nature
of this invention to be as follows:-
The object of this invention is to produce by printing upon calico or other woven
fabrics, effects which have hitherto been unattainable; and the invention consists in
printing designs fitted with a "reserve" printed simultaneously with a "blotch "
or other fitted ground.
The reserve may be either a chemical or a mechanical reserve, or both combined,
and may be printed either upon or under the "blotch" or other fitted ground.
We have found that by this combined process very fine and delicate effects can
be produced.
Dated this 25th day of Sentember 1894
Improvements in Printing upon Calico and other Woven Fabrics.
We EDMUND POTTER AND COMPANY LIMITED, and JOHN BARR, Calico
Printers, of Dinting Vale, in the County of Derby, 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:-
The object of this invention is to produce by printing upon calico or other woven
fabrics, effects which have hitherto been unattainable; and the invention consists
in printing designs fitted with a reserve" printed simultaneously with a
"blotch
or other fitted ground.
66
"
The reserve may be either a chemical or a mechanical reserve, or both combined,
and may be printed either as a discharge upon the "blotch" or other fitted ground or
as a resist under the "blotch" or other fitted ground.
We have found that by this combined process very fine and delicate effects can
be produced.
In order that the invention may be more clearly understood we will give an
example of a method which may be employed for producing an effect by printing
a reserve under a "blotch."
The "blotch" printing color is made as follows:-
A color mixture of 42 lbs. starch, 24 lbs. chlorate of potash, and 40 gallons
(imperial) of water is first boiled and after it has cooled sufficiently 36 lbs. of
ferrocyanide of potash is added thereto.
This may be called the standard color.
To 5 gallons (imperial) of this standard color, 9 lbs. of hydro-chloride of
aniline salt, dissolved in 1 gallon (imperial) of water, are added, and the
"blotch” printing color is obtained.

page_text: A suitable reserve is made by mixing 10 lbs. of zinc oxide powder in one gallon
(imperial) of water, and adding one gallon (imperial) and a half of senegal gum
solution thereto.
This reserve color is printed upon the fabric by a roller preceding the roller
which prints the "blotch" and thus not only is the design obtained as printed by
the "blotch," but a further fine effect in white is produced by the reserve under
the "blotch" printing color, and such as could not be produced by the "blotch."
By modifying the reserve color and adding coloring matters thereto, colored
reserves are obtained, and thus the effects can be still further modified. It will be
evident without further description that any other fitted ground may be combined
with the reserve instead of the "blotch."
We would remark in conclusion that we do not claim any novelty in the printing
colors as above described as these are only given by way of example.
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 :-
"
Printing upon calico and other woven fabrics designs fitted with a "reserve
printed simultaneously with a "blotch" or other fitted ground, substantially as
hereinbefore described.
Dated this 8th day of March 1895.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.