Improvements in Sterilizing Apparatus.
Year: 1895

page_text: Date of Application, 24th Dec., 1895
Complete Specification Left, 15th Apr., 1896-Accepted, 30th May,
1896
PROVISIONAL SPECIFICATION.
Improvements in Sterilizing Apparatus.
I, JOHN LAW AYME AYMARD, of Saint Matthews, Ipswich, in the County of
Suffolk, Physician, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in sterilizing apparatus and has for its
object to devise a convenient and inexpensive contrivance that is especially adapted
for use as a domestic apparatus for sterilizing milk.
According to my invention the apparatus comprises essentially an inner chamber
which is capable of being closed by a tight fitting lid, and an outer casing of larger
diameter surrounding the greater portion of this inner chamber. The outer casing
may be conjoined to the aforesaid inner chamber by any suitable means and an
annular space is left between the chamber and the casing. The lower portion of
the outer casing is adapted to fit on to an ordinary saucepan and the inner chamber is
of such a length that its lower part will dip into water contained in the saucepan.
The upper end of the outer casing is closed by a lid which may be the lid of the
saucepan to which the apparatus is applied. The milk or other substance to be
sterilized is placed in the said inner chamber and the water in the saucepan allowed
to boil. The steam thus generated is free to completely envelop that portion of
the inner chamber which is above the water in the saucepan. In other words the
inner chamber is steam jacketed and no entrance of air into the said chamber can
take place.
In order to facilitate the removal of the contents of the inner chamber, the
latter may be provided with a tube extending across the before mentioned annular
space and opening into a spout with which the outer casing is provided. The outer
casing may also be furnished with a handle for permitting the apparatus to be
readily tilted to pour out the contents of the inner chamber through the aforesaid
spout.
The lip or flange of the lid of the inner chamber may be formed of such a depth
that when the lid is in place the said lip or flange covers the entrance to the before
mentioned tube leading to the spout, so that access of air to the inner chamber
through such tube is avoided during the sterilizing operation. If desired the said
lip or flange of the lid may be provided with an aperture or a notch so that by
shifting the lid into a position to bring this notch opposite the aforesaid tube the
contents of the inner chamber can then be poured out through the spout without
removing the lid of the inner chamber.
The connection of the aforesaid outer casing to the inner chamber may be such
that these parts can be disconnected when desired.
Dared this 24th donr of December 1805
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: improvements in its apparatus.
I, JOHN LAW AYME AYMARD, of Saint Matthews, Ipswich, in the County of
Suffolk, Physician, 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 :-
This invention relates to sterilizing apparatus and has for its object to devise a
convenient and inexpensive contrivance that is especially adapted for domestic use
for sterilizing milk.
An important feature in my construction of such apparatus is that the vessel in
which the milk is contained is surrounded by a steam space except at that part
where it dips into the liquid from which the steam is generated; in other words
the milk-vessel is steam-jacketed.
In order that my invention may be clearly understood I will proceed to
describe the same more fully with reference to the accompanying drawings in
which
Figure 1 is a central vertical section of the apparatus; and
Figure 2 a plan with the outer lid removed.
A is an inner chamber or vessel into which the milk to be sterilized is placed.
This vessel has a tight fitting lid A¹ and is surrounded at its upper portion by an
outer casing B of larger diameter. The vessel A. is connected to the surrounding
casing B by distance pieces a' which extend at intervals across the annular steam
space a. The lower portion of the casing B is formed with a flange or collar b by
which the said casing is supported in a saucepan or similar vessel C. The inner
vessel A is of such a depth that its lower end will dip into water contained in the
saucepan. The upper end of the casing B is closed with a lid B' and this lid is
preferably of such a diameter that it will also fit the saucepan when the casing B
is removed. The inner vessel is provided with a spout A2 which extends through
the casing B, a tight joint being formed by solder or other means where the spout
passes through the casing.
It will be seen that the distance pieces a connect the inner vessel A to the
casing B so that these parts form one piece that can be readily removed from the
saucepan by an ordinary handle B². These parts may however be made detachable
if preferred. C' is the handle of the saucepan C.
If desired I can form the lip of the lid A' with a deep portion of proper shape
to completely cover the interior aperture of the spout so that the contents of the
inner vessel can be isolated from the atmosphere. In this case it would be necessary
to turn the lid to uncover the spout before the contents of the inner vessel A could
be poured out.
My apparatus will also be found particularly advantageous for use as a milk-ura
in which case, instead of providing the inner vessel A with a spout às above stated,
which would necessitate tilting the urn to pour out the milk, I prefer to provide it
with an outlet at the bottom controlled by a tap.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a sterilizing apparatus the combination of an inner vessel having a tight
fitting lid and of an outer casing which is of such dimensions that a steam
space exists all around the said inner vessel except at that part where the
latter dips into the liquid from which the steam is generated, substantially as
described.

page_text: 2. A domestic milk sterilizing apparatus constructed substantially as described
with reference to the accompanying drawings.
Dated this 15th day of April 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.