An Improved Process for Producing Designs upon Calico and other Woven Fabrics.
Year: 1891

page_text: Date of Application, 28th Nov., 1891
Complete Specification Left, 21st Jan., 1892-Accepted, 14th May, 1892
PROVISIONAL OF MULETUATION.
An Improved Process for Producing Designs upon Calico and other
Woven Fabrics.
I CHARLES HENRY NEVILL of 19 George Street Manchester in the County of
Lancaster Calico Printer do hereby declare the nature of the said invention to be as
follows:-
This invention consists of an improved process whereby the class of colors known
to the trade as 65
azo colors can be worked in combination with “discharge colors
on alizarine dyed cloth.
According to my improved method the cloth (after being dyed by the alizarine
process) is prepared with an alkaline solution of a phenol and then dried.
It is next printed (in combination with suitable discharge colors") with a color
or colors made with an amine diazotized, and properly thickened.
By this improved process or method I can obtain many novel combinations and
effects which have not hitherto been produced.
Dated this 27th day of November 1891.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Process for Producing Designs upon Calico and other
Woven Fabrics.
I CHARLES HENRY NEVILL of 19 George Street Manchester in the County of
Lancaster, Calico Printer, 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:-
"
27
This invention consists of an improved process whereby the class of colors known
to the trade as azo colors
can be worked in combination with "discharge colors
on cloth previously dyed or colored with alizarine.
It should be understood that for the purposes of my invention the term "azo
colors" means, and is intended to mean, "insoluble oxyazo colors."
According to my improved method the cloth (after being dyed or colored by
the alizarine process) is prepared with an alkaline solution of a phenol and then
dried.
It is next printed (in combination with suitable "discharge colors") with a color
or colors made with an amine diazotized, and properly thickened.
By this improved process or method can obtain many novel combinations and
effects which have not hitherto been produced.
For example; let us suppose that my improved process is to be applied to a
piece of calico having (say) a pink ground.
This pink ground having been produced by any of the usual or known methods,
such as by preparing the cloth with a suitable mordant and then dyeing with
alizarine, or by printing or otherwise applying the mordant and alizarine together,
or by any other suitable known way of producing a similar result by the use of
alizarine, the piece is then prepared by running through a bath of, or being
"slopped" with an alkaline solution of a phenol such for example as beta naphthol
which may be prepared in the following proportions.

page_text: 8 lbs. of beta naphthol.
13 lbs. of a solution of caustic soda (70 degrees Twaddell).
Water to make 44 gallons.
The piece so prepared is dried and is then printed with a color or colors made
with an amine diazotised such for example as alpha naphthylamine diazotized
and properly thickened, in conjunction, and at the same time, with one or more
"discharge" colors such as are ordinarily used for discharging "turkey red
goods.
The above named alpha naphthylamine may be prepared in the following
manner.
I first mix together 1 gallons of starch thickening 14½ oz. of alpha naphthylamine
dissolved in 3 pints of water, and
13 lbs. of hydrochloric acid (28 degrees Twaddell).
The above is mixed gradually with the following,
lb. of nitrite of soda,
14 lbs. of acetate of soda dissolved in gallon of water and mixed with gallon
of starch thickening.
I would remark however that this preparation and that of the beta naphthol
above described are merely given for the sake of example and may be varied
according to circumstances so long as the peculiar features of my invention are
retained.
processes of "cutting
The piece is then put through the usual "turkey red"
and raising" and is dried and finished in the ordinary manner.
A piece treated as above, will have a chocolate color on a pink ground combined
with such "discharge" colors as may have been selected for use. Other shades
are produced by varying the phenol and the amine as will be readily understood by
persons conversant with the art.
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 :-
"
First The improved method of producing designs upon calico and other woven
fabrics by the combination of "insoluble oxyazo colours" with "discharge colours
on cloth previously dyed or colored with alizarine, substantially as hereinbefore
described.
Secondly claim the improved process consisting of first dyeing or coloring
the woven fabric by an alizarine process, secondly preparing the same with an
alkaline solution of a suitable phenol and drying the same, and thirdly printing the
cloth thus prepared and dried with a color or colors made with an amine diazotized
and properly thickened, in combination with suitable "discharge colors."
Dated the 19th day of January 1892.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.