AN IMPROVED PROCESS OF MANUFACTURING GLUE FROM STARCH
Year: 1879

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 MANUFACTURING GLUE FROM STARCH."
communication from abroad by Odo Briegleb, of Berlin, Prussia.
A
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 10th February 1879.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED PROCESS OF MANUFACTURING
GLUE FROM STARCH." [A communication from abroad by Odo Briegleb, of Berlin,
Prussia.].
This Invention relates to an improved process for the manufacture of vegetable
glue, and consists in opening the gluten of potatoe-starch by the action of alkalies,
and then treating the product with salts or with salts and acids.
In carrying the said Invention into practice, I place in a suitable stirring
machine or apparatus a quantity of potatoe-starch with some water, which are then
well stirred or agitated. I then add a solution of caustic soda and caustic potash,
or of one of these substances, also some chloride of barium, chloride of sodiuin, and
chloride of zinc, or only one or two of these three substances, according to the
quality of glue required, and when necessary I add muriatic acid or sulphuric
acid.
I may substitute other salts and other acids for those above named, but I con-
sider the ones specified to be the best for the purpose.

page_text: This Invention relates to an improved process for the manufacture of vegetable
glue, and consists in opening the gluten of potato starch by the action of alkalies,
and then treating the product with salts alone, or with salts and acids.
In carrying the said Invention into practice, I place in a suitable stirring
machine or apparatus any required quantity of potato-starch with water, and then
well stir or agitate the same; I then add a solution of caustic soda and caustic
potash, or of one of these substances, also some chloride of barium, chloride of
sodium, and chloride of zinc, or only one or two of these three substances, according
to the quality of glue required, and when necessary I add muriatic acid or sul-
phuric acid, or other suitable neutralizing acid; I also sometimes add glycerine or
some suitable oil, such as olive oil or rape seed oil. The alkalies, if left in the glue,
would impair its utility for many purposes. But by the neutralization, these
alkalies are converted into indifferent salts, and the glue will be neutral, that is to
say, it will be neither acid nor alkaline, and will have no effect or action on colors.
I may substitute other salts and other acids for those above named, but I con-
sider those specified to be the best for the purpose.
Having thus fully described the said Invention as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim,
The improved manufacture of glue, substantially as above set forth.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Seventh day of August, in the year of our Lord One
thousand eight hundred and seventy nine.
TX7M PORT LAKE 10)