IMPROVEMENTS IN THE MANUFACTURE OF CERTAIN KINDS OF SOAP
Year: 1855

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PROVISIONAL SPECIFICATION left by William Gossage at the Office of
the Commissioners of Patents, with his Petition, on the 14th April 1855.
I, WILLIAM GOSSAGE, of Widnes, in the County of Lancaster, Chemist, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN THE
MANUFACTURE OF CERTAIN KINDS OF SOAP " to be as follows:-
My improvements in the manufacture of certain kinds of soap are applicable
to the production of those kinds of soap which are or may be manufactured by
adding other substances to the true soaps, which are prepared by the combination
of alkalies with tallow, rosin, oil, or other such substances.
In the Specifications of two several Letters Patent which have been granted
to me for my Inventions connected with the manufacture of soap, the one
of which Patents bears date, the 3rd of April 1854, and the other the 3rd of
August 1854, I have stated as being of my Invention the application of "soluble
glass" (previously dissolved in water, and the solution concentrated, so as to
form a thick viscous compound,) to the production of compound soaps, as therein
described, by mixing such viscous compound or solution of soluble glass with
soaps produced by combining tallow, rosin, oil, or other such substances with
alkali by the ordinary method of working, in which ordinary method of working
the lyes (alkaline solutions) are added at successive operations to the fatty or
resinous matters employed, and the exhausted lyes after being deprived of
alkali are withdrawn from the soap coppers previously to the addition of such
further quantities of lyes as are requisite to finish the manufacture of the soap.

page_text: In carrying out my said Inventions, I have found that compound soaps more
suited for some purposes than those produced by the methods described in my
said Specifications can be obtained when the said viscous solution of soluble
glass is mixed with soap made by combining fatty or resinous matters with lyes,
containing such a proportion of alkali in solution as is sufficient to perfect the
conversion of such fatty or resinous matters into soap by one operation without
requiring the abstraction of exhausted lyes therefrom, and the addition of a
further quantity of lye containing alkali to complete such conversion. In
effecting this part of my Invention I cause the fatty or resinous matters
employed to be converted into soap, either by boiling these matters with a
suitable quantity of alkaline lyes of the required strength, or I effect this con-
version by mixing the said matters and lyes together without boiling, and I
cause the soap produced by either of these methods to be mixed with viscous
solution of soluble glass, or with solution of silicate of soda or of potash, in
such proportions as may be suitable for the production of the compound soap
required.
My Invention also applies to the production of compound soap by causing
rosin to become combined with viscous solution of soluble glass, or with solution
of silicate of soda or of potash without such rosin having been previously con-
I effect such combination of rosin
verted into soap by combination with alkali.
with viscous solution of soluble glass, or with solution of silicate of soda or of
potash, by boiling together the said materials in suitable proportions for the
production of the compound soap required.
My Invention also applies to the production of compound soap by causing
rosin without the addition of any fatty matters to become combined with alkali
contained in lyes, and adding to the product obtained such a proportion of
wheaten flour or or other farinaceous substance, or of some finely divided argil-
laceous or siliceous substance (such as china clay or ground flints), as may be
sufficient to give such a degree of firmness to the compound soap produced as
to render it suitable to be used for detergent purposes.
My Invention also applies to the use of farinaceous, aluminous, or siliceous
substances in a state of fine division for mixing with compound soaps containing
solution of soluble glass, to give such a degree of firmness to such compound
soaps as to render them more suitable to be used for detergent purposes.