Year: 1898

page_text: Date of Application, 11th Nov.,
1898
Complete Specification Left, 11th Aug., 1899-Accepted, 16th Sept., 1899
I, DAVID GRAY, Junior, of 2, Fanellan Place, Shore Street, Inverness, Scotland,
Chemist, do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved soap especially applicable for toilet
purposes, and possesses specific cleansing and curative properties in relation to
the human or other skin.
My improved soap possesses remarkable curative and cleansing properties,
whilst it is at the same time without injurious effect upon the most delicate
skin.
The essential feature of my improved soap consists in the use of a preparation
of pepsin. Experiment has demonstrated that this product re-acts beneficially
upon any epidermal dead tissues, the result of eczemal or other skin diseases. and
that it will moreover dissolve and remove any dead tissues, however caused, from
the surface of the skin. this action, however, being restricted to dead tissues, and
having no injurious effect whatever upon the living skin. My improved soap
is thus enabled to re-act energetically upon all that it is desirable to remove
from the skin of the user without injuring the most delicate cuticle, as occurs
when even a slightly caustic soap is employed.
In carrying my invention into effect I proceed preferably as follows:--
I take a certain quantity of a fine super-fatted soap and reduce it to the liquid
condition. I then add about 8 to 10 per cent. of a preparation of glycerole of pepsin
(a preparation of pepsin in glycerine) and 2 to 3 per cent. of a harmless antiseptic,
such for instance as borax. Care should be taken in incorporating these ingredients
that the temperature of the mass is not at any time above 100° Fahrenheit to
avoid injury to the pepsin. The preparation is then finished and prepared in
tablets or otherwise in the usual manner.
I find it in practice advisable to use tallow as the basis of my soap, and it is
preferably made without colouring matter. Harmless perfume may be added.
In the foregoing description I have indicated the best proportions as known
to me at present, but it is obvious that my invention is not limited to the pro-
portions set forth, as these may be varied within certain limits without departing
from the scope of my invention.
Dated this 11th dor of Niaramber 1808
I, DAVID GRAY, Junior: of 2, Fanellan Place, Shore Street, Inverness, Scotland,
Chemist, do hereby declare the nature of this invention and in what manner the
[Price 8d.]

page_text: same is to be performed to be particularly described and ascertained in and by
the following statement:-
My invention relates to an improved soap especially applicable for toilet
purposes, which possesses specific cleansing and curative properties when applied
to the living human or other skin.
The essential feature of my improved soap consists in the use of a preparation
of pepsin. Experiment has demonstrated that this product re-acts beneficially
upon any epidermal dead tissues, the result of eczemal or other skin diseases, and
that it will moreover dissolve and remove any dead tissues however caused, from
the surface of the skin, this action, however, being restricted to dead tissues, and
having no injurious effect whatever upon the living skin. My improved soap
is thus enabled to re-act energetically upon all that it is desirable to remove
from the skin of the user without injuring the most delicate cuticle, as occurs
when even a slightly caustic soap is employed.
I desire to point out that it is essential that the pepsine preparation shall
continue to possess its active properties when added to the soap and that the
latter shall not contain any ingredient which will injuriously affect the pepsine.
The presence of excess of caustic alkali or of such a reagent as silicate of soda,
or the heating of the mass to a temperature approaching the boiling point at
ordinary atmospheric pressure, would be fatal to the activity of the pepsine and
would defeat the object of the preparation.
In carrying, my invention into effect I proceed preferably as follows:-
I take a certain quantity of a fine super-fatted soap and reduce it to the liquid
condition. I then add about 8 to 10 per cent. of glycerole of pepsin (a well-
known preparation of pepsin in glycerine) and may also add 2 to 3 per cent. of
a harmless antiseptic, such for instance as borax. Care should be taken in
incorporating these ingredients that the temperature of the mass is not at any
time above 100° Fahrenheit to avoid injury to the pepsin. The preparation is
then finished and prepared in tablets or otherwise in the usual manner.
I find it in practice advisable to use tallow as the basis of my soap, and it is
preferably made without colouring matter. Harmless perfume may be added.
I do not limit myself to the exact proportions set forth in this specification,
which, however, are those demonstrated by experiment to be most satisfactory
in my experience.
I do not claim any novelty for the use of antiseptics such as borax, nor for the
addition of glycerine to soap, such devices being well known, but
.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A detergent for cleansing living skin, containing active pepsine.
2. An improved detergent compounded of soap free from caustic alkali, an
antiseptic having no injurious action on pepsine, and a glycerine preparation of
active pepsine, substantially as and for the purposes described.
Dated the 8th dow of A100
1800
dex of
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.