Improvements in the Manufacture of Soap.
Year: 1894

page_text: Date of Application, 4th Aug., 1894
Complete Specification Left, 8th Feb., 1895-Accepted, 30th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Soap.
We SIGMUND ROSENBLUM of Longton House, Keyusham near Bristol,
Analytical Chemist, and FRIEDRICH LUDWIG BARTELT, Corston Lodge near
Bristol, Oil and Soap Manufacturer, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to produce a soap of a good colour, having
greatly increased cleansing power over any other soap now in the market,
and which completely disinfects the clothes or other materials with which it
is used.
In carrying out this invention, we make a soap in the usual way, say, for
example, a yellow soap, and when the manufacture is practically completed, and
while the material is still hot (say, about 50 or 60 C.), we add thereto a solution of
an alkaline peroxide, such as sodium or potassium peroxide.
The quantity of peroxide which we find to be useful for our purpose, is about
one half per cent., but we do not wish to confine ourselves to such a proportion.
The solution is added gradually, and is stirred into the mass, the temperature
being kept up meanwhile.
When the mixing is complete, the mass is allowed to cool, and is made up into
bars or blocks for the market in the usual way.
Or the alkaline peroxide may be used in suitable proportion, either entirely or
in combination with other alkali, in the manufacture of a soap, which will then
be treated as above described, a slight excess of this alkaline peroxide being
necessary for the purposes of our invention.
Dated 4th August 1894.
NEWTON & SON,
Agents for the Applicants.
Improvements in the Manufacture of Soap.
We, SIGMUND ROSENBLUM of Longton House, Keynsham, near Bristol,
Analytical Chemist, and FRIEDRICH LUDWIG BARTELT, Corston Lodge,
Corston, near Bristol, Oil and Soap Manufacturer, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following stateinent :-
The object of this invention is to produce a new soap, which will have peculiar
cleansing and disinfecting properties, as well as the distinct advantage of floating
when placed in water, and all without the slightest detrimental effect on the
textures of clothes or other materials with which it is employed when used for
washing fabrics, and the invention consists in the use of au alkaline peroxide,
preferably at a time after the fatty matters used to produce the soap are completely
saponified.
:-
In carrying out this invention, we prefer to proceed as follows:-
We take tallow and cocoa-nut oil, and saponify them, say, with caustic soda, in
the usual war

page_text: To the completely saponified fatty matter, or soap, as it now is, and while in a
heated state, say, at a temperature of about 50 to 60 C., we add, with agitation, a
solution of an alkaline peroxide.
The alkaline peroxide which we prefer to use, for various reasons, is peroxide of
sodium (Na,O,), and we prepare the solution by dissolving, say, two to three lbs.
of peroxide in 28 lbs., or their equivalent, of water.
The proportion of the peroxide used for the purposes of the invention may vary
between one half per cent. and two per cent. of the saponified mass under treatment,
but we have found good results are obtained from using one half per cent.
We prefer to pump the solution of peroxide into the pan at the bottom, and
we agitate the mass, either mechanically or by steam, until such time as bubbles of
oxygen appear on the surface, when the agitation is discontinued, the mass is drawn
off into moulds, and allowed to cool in the usual way.
When used in the laundry, a suitable quantity of the soap is simply dissolved in
the hot washing water, and the clothes are allowed to remain therein during a short
period, being stirred up from time to time, but without rubbing, after which they
are taken out and well rinsed.
Besides being thoroughly cleansed, the clothes are
also disinfected, thus making the soap a valuable sanitary agent.
The soap prepared as above described will have the property of floating in water,
an advantage which will be readily appreciated.
We may here remark that although we have particularly mentioned sodium
peroxide as the alkaline peroxide, we do not intend to confine ourselves to that
material, as other alkaline peroxides may also be employed for the purposes of
this invention; nor do we intend to confine ourselves to the fatty matters, nor the
saponifying agent mentioned, nor to the exact proportions of the alkaline peroxide
given, nor to a watery solution; as these may be varied without departing from the
nature of the invention.
It will be obvious that an alkaline peroxide may be used in the manufacture of
the soap to effect the saponification of the fatty matters, but we make no claim
any such use, as that forms no part of our invention. If, however, an alkaline
peroxide be so used, there must be an excess, in or about the proportions given,
over and above what is required to produce a neutral, completely saponified mass
of fatty matters, in order to obtain the desired result, and carry out the object of
the invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In the manufacture of an improved soap, the use of an alkaline peroxide in
the manner and for the purpose set forth.
2. The process of producing an improved soap, which consists in adding to
the completely saponified fatty matters, an alkaline peroxide, as and for the purpose
set forth.
3. The process of producing an improved soap, which consists in adding (with
agitation) to the completely saponified fatty matters while at a temperature of
from 50 to 60 C., an alkaline peroxide, in or about the proportions given, and in a
state of solution, as set forth.
4. The process of producing an improved soap, and consisting in adding to
the completely saponified fatty matter, an excess of alkali, in the form of an alkaline
peroxide in or about the proportions given, as set forth.
NEWTON & SON,
Agents for the Applicants.