Improvements in the Manufacture of Soap.
Year: 1898

page_text: Date of Application, 24th Feb., 1999
Complete Specification Left 23rd Nov. 1898-Accented 11th Fob 1200
Complete Specification Left 23rd Nov. 1898-Accented 11th Fah
1800
Improvements in the Manufacture of Soap.
I, LUDWIG GROTE, Manager of Works, of 84B, East India Dock Road, Poplar,
E, in the County of London, do hereby declare the nature of this invention
to be as follows:-
The various processes known hitherto for manufacturing soap in a cold way
suffer all from the great inconvenience that they require too much fat and
therefore are comparatively very expensive. This fact is very likely the reason
why for the production of soap there is still almost universally in use the process
by ebullition which is very complicated and at the same time very unpleasant
and injurious to the health not only of the workmen so employed, but also for
people living in the immediate neighbourhood of such factories."
The present invention has for its purpose to introduce a most simple but effec-
tive process of manufacturing soap in the cold way by which not only the draw-
backs hitherto attached to the similar proceedings known are removed, but in
which especially the necessity of boiling is altogether done away with.
The new process consists of three different operations perfectly separated from
each other, which with regard to the ingredients to be used and also with
regard to the time required for the process of saponification constitute the novelty
of the invention.
Moreover in this new process an essential feature is the use of a proportionately
high percentage of soluble glass which is recognized to possess a considerable
cleansing virtue. The only reason why this highly useful material was hitherto
almost completely neglected in the soap manufacture is that there existed no
practicable process for its rational use.
The three operations which characterize the new method are the following:
1. The beginning of the whole process consists in the mixing of 25 parts by
weight of sugar, syrup or waste of sugar in twice as many parts by weight (50)
of water. The waste of sugar cane is to be preferred to others. This mixture
is then left to stand in an adapted warm place for about a fortnight until, the
solution enters into fermentation.
2. The second and at the same time the principal manipulation consists in
mixing intimately into the aforesaid solution potato flour or other starchy flour
in the proportion of 4 parts by weight to 28 parts of the solution and when this
is done to thoroughly mix these 32 parts by weight with 40 parts by weight of
soluble glass of 40 degrees Baumé equal to a specific weight of 1,385.
After these ingredients have become a perfectly homogeneous mass, half of it,
viz. 36 parts by weight are thoroughly stirred together with, from 20 to 25 parts
by weight of caustic soda of 40° Baumé equal to 1,370 specific weight.
As soon as this solution begins to get warm and to thicken, 16 parts by weight
of liquid cocoa nut oil, or an equal quantity of any other fat or oil adaptable
for the manufacture of soap must be mixed with it and continuously stirred

page_text: until the process of saponification is perfectly completed and quite a uniform
mass of soap has been obtained.
3. As the third operation now follows the admixture of the remaining 36 parts
by weight, viz., the second half of the solution of sugar waste, potato flour and
soluble glass as the real filling material with the soapy mass resulting from the
second operation.
These three manipulations characterize the new process, and the mass of soap
thus obtained can now be brought at once into forms and in a short time is
ready for use.
According to the use the soap to be manufactured is destined for, besides the
ingredients already enumerated above chloride of magnesium, or soap earth, or
commercial salt, or for the purpose of imparting the soap a perfume, etheric
oils, or essences or for sanitary purposes disinfectants may be admixed in
various quantities, without thereby altering in any way the nature of the inven-
tion in the least, and without making any derogation from the cold process, nor
from the three characteristic chief operations.
The soap produced by this new process, in which the proportions of the various
ingredients with a view to the future use of the soap, for inst. as toilet soap and
the like may be to some extent modified, will never become excessively hard even if
kept for a long time, nor will it exude salts, as this has been the case with
former methods where soluble glass was used in the manufacture as a filling
material. In the new process the soluble glass, which figures as one of the main
ingredients will no longer diminish the translucency of the soap as was the case
with former methods.
Dated this Twenty-fourth day of February 1898.
Improvements in the Manufacture of Soap.
I, LUDWIG GROTE, Manager of Works, of 84B, East India Dock Road, Poplar,
E. in the County of London, do hereby declare the nature of this invention
to be as follows:-
The various processes known hitherto for manufacturing soap in a cold way
suffer all from the great inconvenience that they require too much fat and,
therefore, are comparatively very expensive. This fact is very likely the reason
why for the production of soap there is still almost universally in use the process
by ebullition which is very complicated and at the same time very unpleasant
and injurious to the health not only of the workmen so employed, but also for
people living in the immediate neighbourhood of such factories.
The present invention has for its purpose to introduce a most simple but effec-
tive process of manufacturing soap in the cold way by which not only the draw-
backs hitherto attached to the similar proceedings known are removed, but in
which especially the necessity of boiling is altogether done away with.
The new process consists of three different operations perfectly separated from
each other, which with regard to the ingredients to be used and also with
regard to the time required for the process of saponification constitute the novelty
of the invention.
Moreover an essential feature of this new process is the use of a proportionately
high percentage of soluble glass which is recognized to possess a considerable
cleansing virtue. The only reason why this highly useful material was hitherto

page_text: almost completely neglected in the soap manufacture is that there was no process
for its rational utilization in existence.
The three operations which characterize the new method are the following.
1. The beginning of the whole process consists in the mixing of 25 parts by
weight of sugar, syrup or waste of sugar in twice as many parts by weight (50)
of water. The waste of sugar cane is to be preferred to others. This mixture
is then left to stand in a suitable warm place for about a fortnight until the
solution enters into fermentation.
2. The second and at the same time the principal manipulation consists in
mixing intimately with the aforesaid solution potato flour or other starchy flour
in the proportion of 4 parts by weight to 28 parts of the solution, and when this
is done to thoroughly mix these 32 parts by weight with 40 parts by weight of
soluble glass of 40 degrees Baumé, equal to 1,385 specific gravity.
After these ingredients have become a perfectly homogeneous mass, half of it,
viz., 36 parts by weight are thoroughly stirred together with from 20 to 25 parts
by weight of caustic soda of 40 degrees Baumé, equal to 1,370 specific gravity.
As soon as this solution begins to get warm and to thicken, 16 parts by weight
of liquid cocoa nut oil, or an equal quantity of any other fat or oil suitable
for the manufacture of soap must be mixed with it and continuously stirred
until the process of saponification is completed and quite a uniform mass of soap
has been obtained.
3. As the third operation now follows the admixture of the remaining 36 parts
by weight, viz., the second half of the solution of sugar waste, potato flour and
soluble glass as real filling material with the soapy mass resulting from the
second operation.
I
These three manipulations characterize the new process, and the mass of soap
thus obtained can now be brought at once into forms and in a short time is
ready for use.
According to the use the soap to be manufactured is destined for, besides the
ingredients already enumerated above chloride of magnesium, or soap earth, or
commercial salt, or for the purpose of imparting to the soap a perfume, etheric
oils, or essences or, for sanitary purposes, disinfectants, may be admixed in
various quantities without thereby altering in any way the nature of the inven-
tion in the least, and without making any derogation from the cold process, nor
from the three characteristic chief operations.
The soap produced by this new process in which the proportions of the various
ingredients, may, according to the future use of the soap, for instance as toilet
soap and the like to some extent be modified, will never become hard even if
kept or stored for a long time, nor will it exude salts, as has been frequently the
case with former methods where soluble glass was used as a filling material.
Nor finally will the soluble glass, which figures as one of the main ingredients
any longer diminish the translucency of the soap, as was formerly the case.
my said
Having now particularly described and ascertained the nature of
invention, and in what manner the same is to be performed, I declare that what
I claim is
1) The process of manufacturing soap described above, characterised by the
three distinct operations viz: a) the mixing of 25 parts by weight of sugar,
syrup or waste of sugar with twice as many parts by weight (50) of water, and
leaving this solution in a warm place till fermentation takes place: 6) the
intimately mixing with the aforesaid solution potato flour or other starchy flour,
in the proportion of 4 parts by weight to 28 parts of the solution, and thoroughly
mixing these 32 parts with 40 parts by weight of soluble glass of 40 degrees
Baumé, equal to 1,385 specific gravity, half of the mass thus obtained being
then thoroughly stirred together with 20 to 25 parts by weight of caustic soda
of 40 degrees Baumé, equal to 1,370 specific gravity; finally adding 16 parts by

page_text: weight of oil or fat continuously stirred until the process of saponification is
completed. (c) Admixing to the resulting mass the remaining 36 parts by
weight, that is to say, the second half of the solution of sugar waste, potato
flour and soluble glass as the real filling material.
2) In the process of manufacturing soap, characterised in the first claim, the
employment of chloride of magnesium, or soap earth or commercial salt.
3) In the process of manufacturing soap, characterised in the first claim, the
use of etheric oils, or essences, or disinfectants.
00
1000