Improved Apparatus for Preserving Milk, Fruit, and other Foods.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improved Apparatus for Preserving Milk, Fruit, and other Foods.
We, FRANCIS HABGOOD FREETH, Managing Director of The Dairy Outfit Company
Limited, and DAIRY OUTFIT COMPANY LIMITED, both of 251, 253, and 255, Penton-
ville Road, London, N., do hereby declare the nature of this invention to be as
follows;-
-
In a vessel for heating, milk, fruit or other foods by steam we provide inside
near the top of the vessel a pipe connected with a supply of cold water this pipe is
perforated with small holes in such a manner as, when a cock is opened to deliver
a spray of cold water into the said heating vessel while it is filled with steam in such
a manner that the cold water does not come in contact with the bottles or other
vessels containing the milk, fruit, or other food. The aforesaid cold water con-
denses the steam thus creating a vacuum which causes suitable stoppers with rub-
ber washers to seal themselves automatically on to the bottles or other vessels while
in the sterile vapour, or vacuum, before they come into contact with the microbe
laden atmosphere.
The streams of cold water running to the bottom of the sterilizing vessel and
mixing with the water obtained from the condensed steam can then rise till the
bottles or other vessels containing milk, fruit or other food are enveloped with
water which cools them and their contents without risk of breakage.
1008
COMPLETE SPECIFICATION.
Improved Apparatus for Preserving Milk, Fruit, and other Foods.
We, FRANCIS HABGOOD FREETH, Managing Director of the Dairy Outfit Co.
Ltd., and DAIRY OUTFIT COMPANY LTD., both of 251, 253, and 255, Penton-
ville road, in the County of London, 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 object of our invention is the preservation of fruit, milk and other kinds
of food by subjecting them to heat in bottles which are sealed before coming in
contact with ordinary atmosphere. We make a vessel of any suitable shape and
material. A cylinder of galvanised iron preferred which we stand on end in a stand
made for the purpose. We fix therein a shelf or a number of shelves made of
Paise 1

page_text: perforated metal or other suitable material on which to stand the bottles containing
the food to be preserved. At the top of the cylinder we place a safety valve, at
the bottom a cock for running off surplus water and at the side we fix a suitably
made thermometer with the bulb inside the cylinder and the graduated stem out-
side for convenience in reading off the temperature. We supply steam to the
inside of the cylinder from a boiler by means of one or more tubes bent to form
circles and pierced with a number of small holes these deliver the steam into the
cylinder in a number of fine jets. We also supply cold water to the inside of the
cylinder near the top in a similar manner taking care however that the jets of
water do not touch the bottles but strike against the sides and run down to the
bottom of the cylinder.
In using this invention the bottles containing fruit, milk or other foods are
placed on the shelf or shelves of the cylinder, the doors which have steam tight
joints are then shut and steam is turned on till sufficient heat is obtained, as shown
by the thermometer. When this heat has been sustained the proper length of time,
the steam cock is turned off and the cold water cock turned on to let water in,
opening the water outlet at the bottom to reduce steam pressure which might
otherwise prevent the water running in. The cold water causes the bottles and
their contents to cool quickly and the suitably made stoppers with indiarubber
washers to seal themselves automatically on to the bottles.
In the accompanying drawings Figure 1 represents an elevation of this invention
front view. Figure 2 is a vertical section side view and Figure 3 a sectional plan
through line X Y. The same letters are used to denote the same parts in each
figure. A is the cylinder, B wooden stand C safety valve D doors. E thermo-
mieter, steam inlet pipes, G steam inlet cock, H water inlet pipe, I water inlet
cock, shelves, K conical ring made of sheet metal to deflect water to the sides,
L surplus water outlet cock, M angle iron ring fixed round cylinder by which it
is supported on the wooden stand, N bottle containing food to be preserved.
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
clain is-
1. The improved apparatus for preserving fruit, milk and other foods sub-
stantially as described and illustrated.
2. The introduction of cold water into a vessel containing steam, while being
used for preserving milk, fruit or other foods, in such a manner that it cools the
contents and automatically seals the bottles without breaking them.
Dated this 21st doy of Mar 1908
FRANCIS H. FREETH.
DAIRY OUTFIT COMPANY LIMITED,
Directors {
A. E. FROST
F. H. FREETH
A. H. BRADBURN,
Secretary.
FRANCIS H. FREETH.
DAIRY OUTFIT COMPANY LIMITED,
Directors {
A. E. FROST
F. H. FREETH
A. H. BRADBURN,
Secretary.