Improvements in the manufacture of soap.
Year: 1886

page_text: Improvements in the manufacture of soap.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake, & Co, Patent Agents,
Southampton Buildings in the County of Middlesex do hereby declare the nature of
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention relates to the manufacture of soap, and it consists in the use of
an entirely new ingredient in soap making never before used or known.
The new ingredient is the tank water formed in the rendering of lard, tallow or
other fats, which water has heretofore had little or no commercial value.
My foreign Correspondents have discovered that this tank water possesses, in a
high degree, all the properties essential in making soaps, when used in connection
with other adipose or oleaginous substances usually employed in soap making, or
alone as a base to unite with the alkali.
The usefulness of this discovery consists in utilizing as an article of commerce a
substance heretofore comparatively worthless, in the cheapness of the said substance;
in the combining qualities which it possesses, rendering saponification complete; and
in the mordant property of its inherent ammonia, which also renders it remarkably
detergent.
The said tank water when reduced by evaporation is of a syrupy consistence, and
holds in solution about twenty per cent of solid matter, and of this solid matter
about fifteen to twenty per cent is nitrogenized substance furnishing the ammonia.
The said water has strong detergent properties when used alone, either with or
without the use of alkali.
The following are about the proportions used for making soaps by my invention.
One hundred pounds of tank water, after being reduced fifty per cent by evapo-
ration; ninety pounds of tallow and fifteen of resin, with an amount of caustic
soda sufficient to render saponification complete. The details of manufacturing
and handling are the same as with other soaps.
I do not intend to confine myself to the use of the tank-water in connection
with tallow and caustic soda as above stated, as it can be used with any other
adipose or oleaginous substance and with any other alkali used for making soap;

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the resin can also be omitted when it is desired to make white soap. Nor do I
want to confine myself to the exact proportions mentioned above, as I may vary
the proportions of the materials as it is customary with soap-makers.
Soap may be made with the tank water alone as a base in connection with an
alkali, or in connection with other oily substances in different proportions with an
alkali, but I have given the preferable proportions for making cheaply a first class
soap with the new material..
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed as communicated to
me by my foreign Correspondents I declare that what I claim is:-
First. The manufacture of soap by the combination of the so-called tank-water,
or the water formed in the rendering of lard, tallow or other fats, with resin and an
alkali, substantially as set forth.
Second. The combination in, the manufacture of soap, of the so-called tank-
water, or the water formed in the rendering of lard, tallow or other fats, with resin,
tallow or other adipose or oleaginous substances usually used in making soaps, and
an alkali, substantially as described.
Third. In the manufacture of soap, the combination of the so-called tank-water,
or the water formed in the rendering of lard, tallow or other fats, with tallow or
other oleaginous or adipose substances usually used in making soap, and an alkali.
Fourth. Soap manufactured in the manner above described.
Doted this 10th day of Anat 1986
HASELTINE, LAKE & Co.;
Agents for the Applicant.