IMPROVEMENTS IN THE PRODUCTION OF DYEING SUBSTANCES."
Year: 1880

page_text: LETTERS PATENT to Joseph Julius Sachs, of Manchester, in the County of
Lancaster, for an Invention of "IMPROVEMENTS IN THE PRODUCTION OF
DYEING SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said Joseph Julius Sachs at the
Office of the Commissioners of Patents on the 5th May 1880.
JOSEPH JULIUS SACHS, of Manchester, in the County of Lancaster.
MENTS IN THE PRODUCTION OF DYEING SUBSTANCES."
" IMPROVE-
This Invention consists in the production of dyeing substances or materials by
the action of suitable metallic polysulphides or compounds on suitable organic
substances, in presence of suitable metallic hydrates or suitable alkaline sulphides
at an elevated temperature.
In carrying out this Invention I mix for example say one part of caustic soda
with two parts of what is called in commerce Spence's metal or similar compounds,
five parts of water, and one part of any suitable organic substance (say, for
example, saw dust), and heat this mixture to dryness. The mass thus obtained is
dissolved in water at an elevated temperature, and the solution may be used
for dyeing either alone or in combination with other suitable dyeing materials,
which in their combination with the dyeing substances obtained by this Invention
will produce the desired shades.
The dyeing substances which I obtain by my Invention can be used either alone
or in combination with other dyeing materials for printing and for the production
of marking and other inks. In place of the so called Spence's metal other suitable
metallic polysulphides or compounds may be used for producing different effects
and shades. Also the caustic soda may be substituted by other suitable metallic
hydrates, or suitable sulphides of metals of the alkaline and alkaline earthy
orders.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed. by
the said Joseph Julius Sachs in the Great Seal Patent Office on the 5th
November 1880.
JOSEPH JULIUS SACHS, of Manchester, in the County of Lancaster.
MENTS IN THE PRODUCTION OF DYEING SUBSTANCES."
"IMPROVE-
My said Invention relates to the production of dyeing substances or materials by
the action of suitable metallic polysulphides of heavy metals; such for example,
as iron, zinc, copper, and the like, or similar compounds on suitable organic
substances (such as nonvolatile, fatty, and oily bodies, wastes of every description
of fibres, and manufacturing processes) in presence of suitable metallic hydrates,
such, for example, as caustic, soda, or potash, and the like or suitable alkaline
sulphides, such for example as sodium sulphide, potassium sulphide, or
"di" or
"ter" sulphides of them and the like at an elevated temperature.
In carrying out my said Invention I mix, for example, say about one part by
weight of caustic soda with about two parts by weight of what is known in
commerce as Spence's metal, the said metal consisting of metallic sulphides
combined by suitable mechanical means with sulphur. To these substances I add,
say, about five parts by weight of water, and about one part by weight of any
suitable organic substance (say, for example, sawdust), and I heat this mixture to
dryness. The mass thus obtained is dissolved in water at an elevated temperature,
and the solution may be used for dyeing either alone or in conjunction with other
suitable dyeing materials, which when mixed with the dyeing substances obtained
by my said Invention will produce the desired shades.
The dyeing substances obtained by my said Invention (used either alone or in
conjunction with other dyeing materials, as before mentioned) may be employed
for printing and for the production of marking and other inks. In place of the so
called Spence's metal other suitable metallic polysulphides or compound, such for
example as zinc, copper, or the like, may be used for producing different effects
and shades, and for the caustic soda may also be substituted other suitable metallic
hydrates, such for example as potassium hydrate, or suitable sulphides of metals
of the alkaline and alkaline earthy orders, such for example as aluminium hydrate
and the like.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider to be novel and original,
and therefore claim as the Invention secured to me by the hercinbefore in part
recited Letters Patent is,-
The production of dyeing substances, substantially in the manner hereinbefore
described.
In witness whereof, I, the said Joseph Julius Sachs, have to this my
Specification set my hand and seal, this Fourth day of November, One
thousand cight hundred and eighty.
JOSEPH JULIUS SACHS. (L.S)