AN IMPROVED PROCESS OF DYEING HIDES OR SKINS WITH THE HAIR OR WOOL ON THE SAME
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 HIDES OR SKINS WITH THE HAIR OR
WOOL ON THE SAME." A communication from abroad by Messeiurs Ch. Zurée
and Co., of Gand, Belgium.
Sealed the 24th January 1879, and dated the 5th November 1878.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 5th November 1878.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings,, London. "AN IMPROVED PROCESS OF DYEING HIDES OR
SKINS WITH THE HAIR OR WOOL ON THE SAME." [A communication from abroad
by Messieurs Ch. Zurée and Co., of Gand, Belgium.]
This Invention relates to a novel process of dyeing skins with the hair or wool
on them to form furs of all kinds.
In carrying the said Invention into practice I employ for this purpose sulphurets
or sulphides and metallic precipitates either in a nascent or gaseous state, or other-
wise; and the said skins may be dyed by this process in one plain colour, or.
clouded, spotted, or streaked, or in a variety of shades, as desired.
The hides or skins to be treated are placed in a bath prepared with a metallic
salt, according to the shade desired to be obtained, precipitation being afterwards
effected by means of a current of gaseous sulphuretted hydrogen, or by means of a
second bath, the latter of sulfite of hydrogen (sulfite hydrique), or ammoniacal
hydrosulphate, or by means of any metallic salt suitable for the shade desired. This
process is the only one which permits the printing and the reserves necessary to
produce clouding, spotting, silvering, variegation, and other like effects.
All the precipitates are applicable for the said process; also all the metallic salts,
amongst which may be mentioned salts of iron, of nickel, of lead, of antimony, of
mercury, of copper, of silver, bismuth, cadmium, manganese, zinc, arsenic, and tin.

page_text: !
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Robert Lake in the Great Seal- Patent Office on the 5th
May 1879.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED PROCESS OF DYEING. HIDES OR
SKINS WITH THE HAIR OR WOOL ON THE SAME." A communication from abroad by
Messieurs Ch. Zurée and Co., of Gand, Belgium.
This Invention relates to a novel process of dyeing skins with the hair or wool
on them in the preparation of furs of various kinds.
In carrying the said Invention into practice I employ for this purpose sulphurets
or sulphides and metallic precipitates either in a nascent or gaseous state, or other-
wise; and the said skins may be dyed by this process in one plain color, or clouded,
spotted, or streaked, or in a variety of shades, as desired.
The hides or skins to be treated are placed in a bath prepared with a metallic
salt, according to the shade desired to be obtained, precipitation being afterwards
effected by means of a current of gaseous sulphuretted hydrogen, or by means of a
second bath, the latter of sulphite of hydrogen (sulfite hydrique), or ammoniacal
hydrosulphate, or by means of any metallic salt suitable for the shade desired. This
process is the only one which permits the discharges and the reserves necessary to
produce clouding, spotting, silvering, striping, and other like effects.
All the precipitates are applicable for the said process; also all the metallic salts,
amongst which may be mentioned salts of iron, of nickel, of lead, of antimony, of
mercury, of copper, of silver, bismuth, cadmium, manganese, zinc, arsenic, and tin.
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 understood
that I claim,-
The improved process above described of dyeing hides or skins with the hair or
wool on the same.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Fifth day of May, in the year of our Lord One
thousand eight hundred and seventy-nine.