AN IMPROVED METHOD OR PROCESS OF DYEING VEGETABLE AND ANIMAL SUBSTANCES
Year: 1883

page_text: LETTERS PATENT to William Robert Lake, of the firm of Haseltine, Lake,
and Co., Patent Agents, Southampton Buildings, London. for an Invention of
"AN IMPROVED METHOD OR PROCESS OF DYEING VEGETABLE AND ANIMAL
SUBSTANCES communicated to him from abroad by Edouard Crébassa,
Chemist and Baron Pierre Calvet Rogniat, both of Paris, France..
"
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 7th December 1883.
WILLIAM ROBERT LAKE of the firm of Haseltine Lake & Co Patent Agents,
Southampton Buildings London "AN IMPROVED METHOD OR PROCESS OF DYEING
VEGETABLE AND ANIMAL SUBSTANCES"-[A communication to him from abroad
by Edouard Crébassa, Chemist and Baron Pierre Calvet Rogniat, both of Paris,
France.]
This invention relates to a method or process of dyeing, without the aid of heat,
vegetable or animal substances, and is designed to serve as a substitute for the hot
dyeing process heretofore employed.
The ordinary dyeing process comprises the following series of operations that is
to say 1 The action of heat termed "boiling "having for its object the dissolution
of gummy or other matters which fill the pores of the fibres; 2nd The action,
with the aid of heat, of a tannic or other mordant in order to prepare the fibres
for the fixing of coloring matters; 3rd the action of coloring matters, solution of
logwood or the like with the aid of heat; and 4th the action of metallic salts for
fixing the said coloring matters.
This invention has for its primary object to dispense with the heat used
preliminarily in the course of the dyeing operation, this result being obtained by
making use of a peculiar mordant the composition of which is hereinafter described.
The operations in this case are limited to 1st subjecting the textile fibres directly,
and without the aid of heat, to the action of the said mordant, and secondly
subjecting the said textile fibres to the action of coloring matters and metallic
salta also without the aid of heat.

page_text: 106 kilogrammes 600 grammes
I dilute the above according to requirements. This bath is boiled and allowed
to rest for a quarter of an hour; it is decanted when clear into another receptacle;
ten centilitres of glycerine are now added thereto in order to precipitate the acrid
matters left in the decanted liquor. After cooling, the mordant thus prepared may
be employed immediately for dyeing purposes.
I may alter the proportion of the above substances and employ other similar
substances for constituting a mordant for the use aforesaid, that is to say the
dyeing of textile substances without the aid of heat.
The advantages of this process are the following, that is to say:-
The suppression of the use of heat in the shape of steam or otherwise; a saving
of time in dyeing, the series of operations not lasting more than an hour; and the
greater fixedness of the color, hot or cold washings having no action upon articles
dyed according to this process, the said articles also resisting the action of light
and being unaffected by the temperature of the atmosphere. This process is
applicable to all substances and colors by reason of the complete destruction of
all impure matters contained in the fibres.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Robert Lake in the Patent Office on the 7th June
1884.
”
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co, Patent Agents
Southampton Buildings, London, "AN IMPROVED METHOD OR PROCESS OF DYEING
VEGETABLE AND ANIMAL SUBSTANCES A communication to me from abroad
by Edouard Crébassa, Chemist, and Baron Pierre Calvet Rogniat, both of Paris,
France,
This invention relates to a method or process of dyeing, without the aid of heat,
vegetable or animal substances, and is designed to serve as a substitute for the hot
dyeing process heretofore employed.
The ordinary dyeing process comprises the following series of operations that is
to say: 1st. The action of heat termed "boiling" having for its object the dissolution
of gummy or other matters which fill the pores of the fibres; 2nd, the action, with
the aid of heat, of tannin or other mordant in order to prepare the fibres for the
fixing of colouring matters; 3rd the action of colouring matters, such as solution of
logwood or the like with the aid of heat; and 4th, the action of metallic salts for
fixing the said colouring matters.
This invention has for its primary object to dispense with the heat used
preliminarily in the course of the dyeing operation, this result being obtained by
making use of a peculiar mordant the composition of which is hereinafter described.
The operations in this case are limited to 1*, subjecting the textile fibres directly,
and without the aid of heat, to the action of the said mordant, and secondly
subjecting the said textile fibres to the action of colouring matters and metallic
salts, also without the aid of heat.
The composition of the mordant which has been found to give the best results is,
100
The above compound is diluted according to requirements
This bath is boiled and allowed to rest for a quarter of an hour; and is decanted
when clear into another receptacle; ten centilitres of glycerine are now added
thereto in order to precipitate the acrid matters left in the decanted liquor; After
cooling, the mordant thus prepared may be employed immediately for dyeing
purposes.
I may alter the proportion of the above substances and employ other similar
substances for constituting a mordant for the use aforesaid, that is to say, the
dyeing of textile substances without the aid of heat.
The advantages of this process are the following that is to say:-the suppression
of the use of heat applied by means of steam or otherwise; a saving of time in
dyeing, the series of dyeing operations not lasting more than an hour; and the
better fixing of the colour; hot or cold washing having no effect upon articles
dyed according to this process. The said articles also resist the action of light and
are unaffected by the temperature of the atmosphere. This process is applicable
to the dyeing of all vegetable and animal substances with any colours, by reason of
the complete destruction of all impure matters contained in the fibres.

page_text: 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 herein before described process of dyeing animal and vegetable substances,
the essential feature of which process consists in the substitution of the action of a
mordant for heat, the said mordant being composed substantially as set forth and
having the effect of dissolving the gummy or other matters which fill the fibres
and of preparing the same for the absorption of the colouring matters.
In witness whereof I the said William Robert Lake have hereunto set my
hand and seal this Fifth day of June in the year of Our Lord One thousand
eight hundred and eighty four