AN IMPROVED METHOD OF AND APPARATUS FOR COOLING OR WARMING MILK."
Year: 1880

page_text: LETTERS PATENT to Edward Fitch, of Fetter Lane, in the City of London,
for an Invention of "AN IMPROVED METHOD OF AND APPARATUS FOR
COOLING OR WARMING MILK."
PROVISIONAL SPECIFICATION left by the said Edward Fitch at the Office
of the Commissioners of Patents on the 17th September 1880.
EDWARD FITCH, of Fetter Lane, in the City of London. "AN IMPROVED
METHOD OF AND APPARATUS FOR COOLING OR WARMING MILK."
According to this Invention I cause cold water or other suitable refrigerating
liquid or vapour to circulate through the milk, or when it is desired to warm
the milk, I cause hot liquid or vapour to circulate through in the same way.
The apparatus I propose to employ to accomplish the above consists of a pipe or
pipes coiled in a helical form; one end of the said pipe or pipes forming the coil is
passed through the coil ready for connecting to a cistern or other vessel containing
either the cold or hot liquid or vapour it is desired to circulate through the milk,
and the other end of the coil forms the outlet for the circulating liquid or vapour.
The action is as follows:-
The aforesaid coil is placed in a milk churn or other vessel containing the milk
(to be cooled for example), and the coil is connected to a cistern or other receptacle
containing water or other suitable liquid or vapour, and when the supply is turned
on the cooling liquid or vapour will circulate through the coil, and consequently
keep the milk cool, or when it is desired to warm the milk, the coil is supplied in a
similar way with hot liquid or vapour.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edward Fitch in the Great Seal Patent Office on the 17th March
1881.
EDWARD FITCH, of Fetter Lane, in the City of London.
METHOD OF AND APPARATUS FOR COOLING OR WARMING MILK."
"AN IMPROVED
According to this Invention I cause cold water or other suitable refrigerating
liquid or vapour to circulate through the milk, or when it is desired to warm the
milk I cause hot liquid or vapour to circulate through in the same way.
The apparatus I propose to employ to accomplish the above consists of a pipe or
pipes coiled in a helical form; one end of the said pipe or pipes forming the coil is
passed through the coil ready for connecting to a cistern or other vessel containing
either the cold or hot liquid or vapour it is desired to circulate through the milk,
and the other end of the coil forms the outlet for the circulating liquid or vapour.
The action is as follows:-
The aforesaid coil is placed in a milk churn or other vessel containing the milk-
(to be cooled for example), and the coil is connected to a cistern or other receptacle
_containing_water_or other suitable liquid.or_vapour, and when the supply_is_turned_
on the cooling liquid or vapour will circulate through the coil, and consequently
“keep the milk cool, or when it is desired to warm the milk, the coil is supplied in
a similar way with hot liquid or vapour. And in order to explain my said
Invention more fully, I will now proceed to describe the same with reference to the
Drawing accompanying this Specification, which shews apparatus constructed
according to this Invention applied to a milk churn.
A shews a cistern containing cold or iced water, to which is connected a piece of
india rubber piping B connected also to the coil C placed in the milk churn D; to
the other end of the coil C is connected another piece of india rubber tubing B¹ as
an outlet for the water, or for connecting with another coil placed in another churn
or other vessel containing ilk to be cooled, so that two or even more vessels of
milk may be cooled at the same time, the last coil in this case having the outlet
tubo. By this means a continual circulation of cold water is kept up in the coil or
coils, thus keeping the milk in which it or they are placed cool.
Instead of cold water, cold air might be advantageously employed in some cases.
When it is desired to warm the milk, hot water, air, or vapour is employed instead
of cold.
Having thus described and ascertained the nature and object of my said Invention,
I would remark in conclusion, that although I have described and shewn my
Invention as applied to a milk churn, I do not intend to limit myself to this
description of vessel, as the said Invention may be applied to any other suitable
vessel containing milk, also I do not wish to limit myself to the precise forin of
apparatus shewn for circulating the liquid or vapour through the milk, but what I
claim as my Invention is circulating cold or hot liquid or vapour through milk,
substantially as and for the purposes set forth.
In witness whereof, I, the said Edward Fitch, have hereunto set my hand and
seal, this Fifteenth day of March, in the year of our Lord One thousand
eight hundred and eighty one.