AN IMPROVED GROUND COLOUR OR PRIMING ALSO APPLICABLE FOR OTHER PURPOSES
Year: 1883

page_text: LETTERS PATENT to Frank Wirth of the firm of Wirth and Company Patent
Solicitors, at Frankfort on the Main, in the Empire of Germany for an
Invention of "AN IMPROVED GROUND COLOUR OR PRIMING ALSO APPLICABLE
FOR OTHER PURPOSES a communication to me from Oscar Fischer, a person
resident at Karlsruhe in the Empire of Germany.
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office
of the Commissioners of Patents on the 31st March 1883.
FRANK WIRTH, of the firm of Wirth and Company, Patent Solicitors, at
Frankfort on the Main, in the Empire of Germany, "AN IMPROVED GROUND
COLOUR OR PRIMING ALSO APPLICABLE FOR OTHER PURPOSES.'
"
A communication
from Oscar Fischer, a person resident at Karlsruhe in the Empire of Germany
The said invention relates to a new ground colour or priming, which may also
be used as a stain for the imitation of natural woods, and which is produced as
follows:-
Fifty parts of horse-blood are boiled with ten parts of linseed for about one
hour, then cooled, and afterwards mixed with fifty parts of Common raw blood.
To it is then added one hundred and ninety: parts of water of thirty to forty degrees
of heat. These two hundred and ninety parts are then well mixed with ten parts
of a solution of Bichromate of potash. When cool the "priming" is ready. I use
horse-blood in preference, but other blood may be used.
This priming is laid on the surfaces to be coated, whether wood, cement, gypsum,
or lime, by means of a brush. The bichromate of potash effects the quick hardening
of the priming under the influence of light, and renders it insoluble by water

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frank Wirth in the Great Seal Patent Office on the 28th September
1883.
FRANK WIRTH, of the firm of Wirth and Company, Patent Solicitors, at Frankfort
on the Main, in the Empire of Germany "AN IMPROVED GROUND COLOUR OR
PRIMING ALSO APPLICABLE FOR OTHER PURPOSES." A communication to him
from Oscar Fischer, a person resident at Karlsruhe in the Empire of Germany.
The said invention relates to a new ground colour or priming, which may also
be used as a stain for the imitation of natural woods, and which is produced as
follows:-
50 parts of horse-blood are boiled with 10 parts of linseed for about one hour,
then cooled, and afterwards mixed with 50 parts of common raw blood. To it is
then added 190 parts of water of 30 to 40 degrees of heat. These 300, parts are
then well mixed with 10 parts of a solution of Bichromate of Potash. When cool
the priming is ready. I use horse-blood in preference, but other blood may
be used.
This priming is laid on the surfaces to be coated, whether wood, cement, gypsum,
or lime, by means of a brush. The Bichromate of Potash effects the quick
hardening of the priming under the influence of light, and renders it insoluble
by water.
Having now fully described and ascertained the nature and objects of the
invention communicated to me, be it known that what is considered novel and is
claimed is:-
1st. The process for the production of a priming or ground color, which shall
quickly dry, and be weather and water proof, by the admixture of blood (boiled
with linseed) raw blood, warm water, and Bichromate of Potash, substantially as
set forth.
2. An improved priming or ground color consisting of a mixture of blood,
(boiled with linseed) raw blood, warm water, and Bichromate of Potash, substantially
as and for the purpose set forth.
In witness whereof.I the said Frank Wirth have hereunto set my hand and seal
this twenty second day of September in the year of our Lord One thousand eight
hundred and eighty three.
FRANK WIRTH (T..S.)
FRANK WIRTH (LS)