AN IMPROVED PROCESS OF DYEING TEXTILE MATERIALS
Year: 1878

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for the Invention of
"AN IMPROVED PROCESS OF DYEING TEXTILE MATERIALS." A communication
from abroad by François Gillet, Joseph Gillet, and François Gillet, junior,
trading as Gillet and Son, all of Lyons, France.
Sealed the 10th January 1879, and dated the 18th July 1878.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 18th July 1878.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED PROCESS OF DYEING TEXTILE
MATERIALS." [A communication from abroad by François Gillet, Joseph Gillet, and
François Gillet, junior, trading as Gillet and Son, all of Lyons, France.]
The process to which this Invention relates has for its object the production upon
textile materials of novel effects in dyeing.
In carrying the said Invention into practice I commence by first dyeing the
material black by any known process, and then I treat the material so dyed with
gelatine, albumen, or some similar substance, after which it is allowed to dry.
After this operation the threads or textile fabrics are placed in a bath, more or less
dense, containing colors obtained by the distillation of coal, and vaporisation is then
effected, either in a wet or dry condition, according to the effects which it is desired
to produce, after which the materials are washed. The threads or fabrics thus
dyed are then ready to be submitted to the operations of drawing, lustring,
D

page_text: calendering, pegging, and all the operations designed to develop their brilliancy;
these latter manipulations form the last part of the treatment.
The treatment of the threads or fabrics with gelatine, albumen, or similar sub-
stances may be dispensed with, but without them the coloring matters are not well
fixed, although they are brighter.
Good results and different effects may be obtained by placing the materials to be
treated alternately in baths of logwood and in baths of acetate of copper,
The same colors obtained by the distillation of coal may also be employed not
only for materials which have first been dyed black but for those which have been
first dyed with other colors more or less dark.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Willian Robert Lake in the Great Seal Patent Office on the 17th
January 1879.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED PROCESS OF DYEING TEXTILE
MATERIALS." A communication from abroad by François Gillet, Joseph Gillet, and
François Gillet, jun., trading as Gillet and Son, all of Lyons, France.
The process to which this Invention relates has for its object the production upon
textile materials of novel effects in dyeing.
In carrying the said Invention into practice I commence by first dyeing the
material black by any known process, then I treat the materials so dyed with
gelatine, albumen, or similar substance, and then it is allowed to dry.
After this operation the threads or textile fabrics are placed in a bath, more or less
dense, of color obtained by the distillation of coal, and vaporization is then effected
either in a wet or dry condition, according to the effects which it is desired to pro-
duce; after these operations the said materials are washed. The threads or
fabrics thus dyed are then ready to be submitted to the operations of drawing,
lustring, calendering, pegging, and other operations designed to develop their
brilliancy; these latter manipulations form the last part of their treatment.
The treatment of the threads or fabrics with gelatine, albumen, or similar sub-
stances may be dispensed with, but without them the coloring matters will not
be well fixed, although they may be brighter.
Good results and different effects may be obtained by placing the materials to be
treated alternately in baths of logwood and in baths of acetate of copper.
The same colors obtained by the distillation of coal may also be employed not
only for materials which have first been dyed black, but for those which have been
first dyed with colours more or less dark. For instance, a very fine effect may be
obtained by the application of aniline, violet, ou French blue. Or quite a different
effect may be produced by the application of such colours on chestnut and other
shades of brown.
Having thus fully described the said Invention as communicated to me by my
foreign correspondents, and the manner of performing the same, I wish it under-
stood that I claim, the improved process for producing novel effects in dyeing by
the application of colours obtained by the distillation of coal, and either permanently
fixed or not upon textile materials which have been previously dyed black, or in
any colour, as above set forth.
In witness whereof, I, the said William Robert Lake, have hereunto set
my hand and seal, this Seventeenth day of January, in the year of our
Lord One thousand eight hundred and seventy-nine