An Improved and Entirely New Method for the Admixture of Ferrous Sulphate or Sulphate of Iron and Potassium Carbonate or Carbonate of Potassium,.
Year: 1887

page_text: Date of Application, 14th Apr., 1887
Complete Left, 12th Jan.; 1888
Complete Accepted, 13th Apr., 1888
An Improved and Entirely New Method for the Admixture of
Ferrous Sulphate or Sulphate of Iron and Potassium Carbonate
or Carbonate of Potassium, so that Chemical Action between
them is Prevented until the Medicines are Exposed to each
other in the Presence of Moisture.
THOMAS THOMPSON Chemist 35 George Street Edinburgh do hereby declare the
nature of this invention to be as follows:-
The two Salts known as Sulphate of Iron and Carbonate of Potash or Potassium
have long been introduced as a special combination for the production of moist
Carbonate of Iron, after they have been introduced into the Stomach as a mixture.
The great difficulty has hitherto been to so combine these Salts so that the desired
chemical action shall not take place until they are taken into the Stomach.
The water of crystallization always present in these Salts (when commercially sold)
gives sufficient moisture to start the chemical reaction so soon as the two are brought
together in order for form into pills, consequently the desired medical effect is almost
entirely lost.
My invention is a method of so combining these ingredients that chemical reaction
cannot take place until they are actually introduced into the Stomach or otherwise
become exposed to moisture.
First The two Salts are dried and freed of the water of crystallization separately
and thoroughly.
Secondly-They are thoroughly incorporated separately with almond or any other
kind of oil or unoxidising agent suitable for the purpose.
Thirdly-They are afterwards mixed together in a bottle glass or any suitable
vessel from which the mixture can be taken.
Fourthly-The ingredients (as a mixture) are introduced into Capsules of Gelatin―
of Gelatin and Glycerine or of membrane.
Fifthly The Capsule being hermetically sealed and the Salts thus excluded from
moisture and also from absorbing moisture from the atmosphere-the chemical
action of the mixed Salts is prevented until the capsule is burst and the contents
exposed to moisture by being taken into the Stomach or by other means.
Sixthly The two Salts may be made into a mass with castor oil, almond oil or
with any oil or unoxidising agent-suitable for such a purpose. The mass is divided
nto pills and afterwards coated with gelatine.

page_text: An Improved and Entirely New Method for the Admixture of
Ferrous Sulphate or Sulphate of Iron and Potassium Carbonate
or Carbonate of Potassium, so that Chemical Action between
them is Prevented until the Medicines are Exposed to each
other in the Presence of Moisture.
THOMAS THOMPSON Chemist 35 George Street Edinburgh 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 statement:-
The two Salts known as Sulphate of Iron and Carbonate of Potassium have long
been introduced as a combination for the production of moist Carbonate of Iron after
having been introduced into the Stomach as a mixture.
The great difficulty hitherto has been to administer these Salts in such a. com-
bined state that chemical reaction shall not take place between them until after
administration.
The water of crystallization always present in one or both of these salts (as com-
mercially sold) gives sufficient moisture to start the chemical reaction so soon as the
two are brought together in order to form into a pill mass, consequently the desired
medicinal effect of the Iron is almost entirely lost.
My invention is a method of so combining these ingredients that chemical reaction
cannot take place until the salts are actually introduced into the stomach or otherwise
become exposed to moisture.
First. The Iron Salt and the alkaline Carbonate Salt are dried and deprived of
their water of crystallization separately and thoroughly.
Secondly. They are thoroughly incorporated separately with either almond oil or
any other oleaginous matter, oleo-resin resinous or Gum resinous substances or with
Petroleum oil or Vaseline or any such Hydrocarbon Oil as may be used to prevent
either of the Salts absorbing moisture until brought in contact with the action of the
Stomach or otherwise in the presence of moisture.
Thirdly. The mixture is introduced into Capsules of Gelatine, of Gelatine and
glycerine or of membrane.
Fourthly. The Capsules being hermetically sealed and the mixed Salts thus excluded
rom the air, oxidation of the Iron Salt is thus effectually prevented, and chemical
action cannot take place until the contents of the Capsules are exposed to moisture
by the action of the Stomach or by other means.
Fifthly. The two Salts may be made into a mass with Vasiline or any such Hydrocarbon
oil, with Castor oil or almond oil or any oleaginous matter, or with an oleo resin, or
resinous or Gum resinous substance as may be used to prevent either of the Salts
absorbing moisture until brought in contact with each other by the action of the
Stomach or otherwise in the presence of moisture.
The mass is divided into pills and the pills afterwards coated with gelatine.

page_text: 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―
First. The application of a fixed oil such as almond oil and of a Hydrocarbon oil
such as petroleum or vaseline and of a resinous, oleo resin or Gum resinous substance
as adhesive agents for the purpose of suspending Sulphate of Iron with an alkaline
Carbonate in the form of a mass so as to prevent chemical reaction between the salts
until exposed to each other in the presence of moisture as herein shown and described
and for the purpose stated.