AN IMPROVED PROCESS OF CONDENSING, REDUCING, AND PRESERVING MILK IN A SOLID STATE, AND IMPROVEMENTS IN APPARATUS TO BE USED THERE- WITH
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by Henry Conradi at the Office of the
Commissioners of Patents on the 7th May 1878. A communication from
abroad by the Marquis Adriano Francesco Rieolfi Doria Claparede and Doctor
Ermenegilde Charles Caratti, of Geneve, Switzerland.
HENRY CONRADI, of 8, Lower James Street, Golden Square, in the County of
Middlesex. "AN IMPROVED PROCESS OF CONDENSING, REDUCING, AND PRESERVING
MILK IN A SOLID STATE, AND IMPROVEMENTS IN APPARATUS TO BE USED THERE-
WITH." [A communication from abroad by the Marquis Adriano Francesco Rieolfi
Doria Claparede and Doctor Ermenegilde Charles Caratti, of Geneve, Switzerland.]
The object of the improvements of the Invention is the condensation, the reduc-
tion, and the preservation of the milk into a solid state, by conserving to the milk
all its natural nutritive proprieties, and by expelling only from it the water, without
altering its flavour through overcharging it with sugar, or by over heating.
The improvements consists therefore, principally, in the process of coagulating
the fresh inilk by means of an acid or any other process or method of coagulating,
viz., by heat or any appropriate coagulum, as per example, the coagulum of the male
goat; further, in introducing the coagulated milk into a rotatory apparatus in which
by means of the centrifugal force all the water is expelled, dispersed, and driven away,
conserving only the solid matters contained in the milk. This rotating apparatus
hereby applied is similar to those used in flour mills to separate the flour from the
bran, but the improvement made on this apparatus so used consists principally in its
disposition and arrangement, so that it moves at a speed which regulates the flow
of the liquid matters which are expelled from the solidified matters, without dis-
turbing the consistency of the former by means of the centrifugal force; further, in
the disposition of three concentrical revolving silk sieves, which according to the
strength of the silk, let pass the watery liquid matters, retaining the milky substan-
tial parts in the different compartments.
The framework, which is by preference of wood, but can also be of any appropriate
material, is carried by a shaft bearing on each side on plummer blocks provided with
the usual arrangement of pulleys or gearing to be driven.

page_text: Openings are provided to empty the sieve according to requirements, while the
liquid matters are allowed to flow away during the operation through appropriate
channels or tubes provided with retaining cocks or valves, keeping back any solid
matters still contained in or driven away with the liquid. As soon as those
substances are sufficiently drained or freed from water and the water being expulsed
and drawn off, they are dried, pounded, and a small quantity of sugar and a chemical
substance is added to them, which serves to destroy the action of the coagulum ;
the chemical substance used for this purpose shall be alcaline, as per example, car-
bonate of potassium or bicarbonate of soda, in the proportion of about one gramme,
sometime somewhat more or less per liter of milk employed.
The apparatus used to displace, to disperse, and to expulse the water, can be of
any shape or form.
It is provided with improved appliances, as cocks or taps, connected to the channels
or tubes through which the water is allowed to run out freely, but which are at the
same time arranged like watering pots or similar appliances provided with mouth-
pieces which retain the solid matter, like roses or nozzles.