AN IMPROVED MANUFAC- TURE OF SOLVENT OR EMULSIVE FOR USE WITH PAINTS PIGMENTS AND THE LIKE "
Year: 1883

page_text: LETTERS PATENT to William Johnstone of Kings Lynn in the county of
Norfolk Analytical Chemist for an Invention of "AN IMPROVED MANUFAC-
TURE OF SOLVENT OR EMULSIVE FOR USE WITH PAINTS PIGMENTS AND THE
LIKE
"
PROVISIONAL SPECIFICATION left by the said William Johnstone at the
Office of the Commissioners of Patents on the 6th January 1883.
WILLIAM JOHNSTONE of Kings Lynn in the County of Norfolk. Analytical
Chemist "AN IMPROVED MANUFACTURE OF SOLVENT OR EMULSIVE FOR USE
WITH PAINTS PIGMENTS AND THE LIKE
"
This invention relates to an improved method of preparing from blood a solvent
or emulsive for use with paints, pigments, whitewashes or the like as a substitute
for glue in the preparation of water color pigments or in staining wood where
varnish is to be used, or as a substitute for priming used in oil color painting and.
for similar purposes.
Fresh blood, or in some cases blood which has been treated with Hydro Borate
(which acts as a preservative for the blood) is deprived of its fibrine by stirring
when hot with about say one tenth (1/10) of its weight of soluble silicate of soda or.
soluble silicate of potash or with a like proportion of a mixture of these silicates;
it is then allowed to stand for some time to allow the several materials to act upon-
each other. About half an hour afterwards I add water to the mixture till the
mass is of such.a consistency as to enable it readily to be laid on with a brush, and
if necessary it may then be deodorized or any unpleasant smell disguised by the
addition of some suitable material such as turpentine.
In some instances it may be desirable to dispense with the use of the silicates
and in such case I proceed as follows. Blood with or without its fibrine having
been abstracted is treated with Potassium or Sodium Hydrate in quantity just
sufficient to dissolve any fibrine contained in the blood an excess of the alkaline
being avoided. After the solution has been allowed to remain for some time I add
about its own volume of water to the mixture so as to enable it to be easily laid
on with a brush.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Johnstone in the Great Seal Patent Office on the
6th July 1883.
WILLIAM JOHNSTONE of King's Lynn, in the county of Norfolk, Analytical
Chemist. "AN IMPROVED MANUFACTURE OF SOLVENT OR EMULSIVE FOR USE
WITH PAINTS, PIGMENTS, AND THE Like
"
This invention relates to an improved method of preparing from blood a solvent
or emulsive for use with paints, pigments, white washes or the like as a substituto
for glue in the preparation of water color pigments or in staining wood where
varnish is to be used or as a substitute for priming used in oil color painting and
for similar purposes.
Fresh Blood, or in some cases blood which has been treated with Hydro Borate
(which acts as a preservative for the blood) is deprived of its fibrine by stirring
when hot, it is then treated with about say one tenth 10 of its weight of soluble
silicate of soda or soluble silicate of potash or with a like proportion of a mixture
of these silicates; it is then allowed to stand for some time to allow the several
materials to act upon each other.
About half an hour afterwards I add water to the mixture till the mass is of
such a consistency as to enable it readily to be laid on with a brush and if
necessary it may then be deodorized or any unpleasant smell disguised by the
addition of some suitable material such as turpentine.
In some instances it may be desirable to dispense with the use of the silicates
and in such cases I proceed as follows, Blood, with or without its fibrine having
been abstracted, is treated with potassium or sodium hydrate in quantity just
sufficient to dissolve any fibrine contained in the blood an excess of the alkali
being avoided; after the solution has been allowed to remain for some time I add
about its own volume of water to the mixture, so as to enable it to be easily laid
on with a brush.
Having now fully described the nature of the said invention and the manner of
performing the same, I wish it to be understood that what I claim and desire to
protect by the hereinbefore in part recited Letters Patent is.*
First The herein described manufacture of a solvent or emulsive from blood
deprived of its fibrine by stirring whilst hot and the addition thereto of a solution
of soluble silicate of soda or soluble silicate of potash or a mixture of these, the
product being diluted substantially as set forth.
Second-The manufacture of a solvent or emulsive by treating the blood with
hydrate of potassium or sodium and diluting the product substantially as set forth.
In witness whereof I the said William Johnstone have hereunto set my
hand and seal this Fourth day of July in the Year of Our Lord One
thousand eight hundred and eighty three.