Improvements in Freezing Machines, and in Pumps suitable for the same.
Year: 1897

page_text: Date of Application, 4th Sept., 1897
Complete Specification Left, 3rd June, 1898-Accepted, 16th July, 1898
PROVISIONAL SPECIFICATION.
Improvements in Freezing Machines, and in Pumps suitable for
the same.
I, HENRY ALBERT FLEUSS, of The Priory, Knowle Green, Staines, in the
County of Middlesex, Engineer, do hereby declare the nature of this invention
to be as follows:-
These improvements relate to my well known machines in which water is frozen
by absorbing its vapour in sulphuric acid under a vacuum.
According to this invention both the vessel containing the sulphuric acid and
that containing the water together with the connection between them are carried
on a base which is constantly rocked (by a connection with the pump handle) so
agitating the acid and causing it to expose a greater surface and making the water
give up its air more readily so producing clearer ice.
Preferably the base is in the form of a cast iron trough of sufficient size to
receive all the acid should the bottle containing it break.
The acid bottle has a wide mouth with a conical seating ground inside. The
bottom of this seating receives a cone formed around the outside of the top of a
tube which hangs down into the bottle. The object of this tube is to throw down
any splashes of acid and prevent them from reaching the suction pipe. The top
of the seating receives a stopper preferably of dermatine a tight joint being made
with vaseline. Made in one piece with the stopper is an upwardly projecting tube
which receives one end of a bent pipe whose other end fits into the top at a
dermatine tube fitting into a seat in the top of the water-bottle. Above the seat
is a small trough to receive water for making a tight joint. The above described
connection between the acid and water bottles has a certain flexibility so that the
water bottle can be readily taken in and out. The stopper to the acid bottle has a
second tube passing through it which is connected to the pump by a flexible pipe.
This pipe opens into the top of an annular chamber surrounding the pump barrel
and at the bottom of the chamber is a hole into the barrel the latter extending
below the chamber.
The pump barrel consists of a tube with its bottom fitting into a socket in a
stand and having fixed to its top a ring on which is a screw thread to engage with
a similar thread inside the cap. The latter is conical inside and has at the top a
conical seating to receive a cone valve having a hole through it for the piston
rod.
Fixed to the top of the cap is a tube similar to the pump barrel and surrounded
by a casing fixed to the top of the annular chamber and having an annular space
between it and the tube. The tube has a cover attached to it by a bayonet joint
and having a nut at the top. The piston rod passes out through a central hole in
this cover.
The tube containing a helical spring surrounding the piston rod and bearing on
the valve and the cover. By unlocking the cover the spring can be raised and by
turning the cover by means of the nut the tube is unscrewed from the top of the

page_text: pump barrel. In this way the parts can be got at without removing the casing.
A bent pipe passes through the top of the tube one branch descending nearly to the
bottom of the annular space and the other descending to a valve seat at the top
of a hole through the cap of the pump barrel. A valve fits on the seat and has a
stem projecting down through the hole into the pump barrel. The lower part of
this stem exactly fits the hole whilst the upper part does not. Oil is introduced
into the pump barrel above the piston and into the tube and the bottom of the
annular space.
When the piston is at the bottom the barrel is in communication
with the annular chamber and receives air from it. When the piston rises first
the oil and then the piston close the opening into the annular chamber and the
air is compressed in the top of the barrel. When the piston gets near the top of
its stroke it comes against the valve stem and lifts it and the valve but before
the piston has got high enough in the barrel to sufficiently compress the air to
make it escape through the open valve, the bottom part of the stem enters the
hole and makes a tight joint. As the piston further rises towards the top of the
barrel the pressure of air lifts the conical valve against its spring and the air rises
through the oil in the tube and escapes with some of the oil into the annular
space a baffle plate being provided to direct the oil downwards onto the surface of
the oil already in the bottom of the space. When the piston is at the top of its
stroke the oil above it fits the conical cap and completely expels the whole of the
air and some of the oil passes into the tube causing an overflow into the annular
space. Immediately the piston begins to descend the conical valve closes and a
vacuum is formed in the pump barrel. The other valve whose stem is resting
on the piston descends with the latter and when the lower part of the stem escapes
from the hole, oil is sucked by the vacuum through the bent pipe from the
annular space replacing the oil which escapes with the air through the conical
valve.
Dated thin 4th day of Cantamban 1907
COMPLETE SPECIFICATION.
Improvements in Freezing Machines, and in Pumps suitable for
the same.
I, HENRY ALBERT FLEUSS, of The Priory, Knowle Green, Staines, in the
County of Middlesex, Engineer, 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:-
These improvements relate to my well known machines in which water is frozen
by absorbing its vapour in sulphuric acid under a vacuum.
Figure 1 is a rear elevation, and Figure 2 a plan, with the bottles removed,
of a machine constructed according to this invention. Figure 3 is a section of
the upper part of the vessel a containing sulphuric acid. Figure 4 is a vertical
section, to a larger scale of the pump, and Figure 5 is a vertical section (at right
angles to Figure 4) showing a detail.
The vessel a containing the sulphuric acid (which is preferably covered with
basket work) and the vessel b containing the water to be frozen together with
the connection c between them are supported on a base d preferably in the form of
a cast iron trough of sufficient size to receive all the acid should the bottle a break.
The base dis mounted on trunnions and is connected by the rod to the beam e
pivotted at e and caused to oscillate in the usual way by the connecting rod e³
to the crank is the connecting rod to the pump f.

page_text: The acid bottle a has a wide mouth with a conical seating ground inside. The
bottom of this seating receives a cone a¹ formed around the outside of the top
of a tube a which hangs down into the bottle. The object of this tube is to
throw down any splashes of acid and prevent them from reaching the suction pipe.
The top of the seating receives a stopper a³ preferably of dermatine, a tight joint
being made with vaseline. this stopper carries a downwardly projecting tube a³.
Made in one piece with the stopper is an upwardly projecting tube which receives
one end of the bent pipe c whose other end fits into the top of a dermatine tube 61
fitting into a seat in the top of the water bottle b. Above the seat is a small trough
to receive water for making a tight joint. The above described connection
between the acid and water bottles has a certain flexibility so that the water
bottle b can be readily taken in and out. The stopper to the acid bottle a has a
second tube a passing through it which is connected to the pump f by a flexible
pipe a. This pipe opens into the top of an annular chamber f¹ surrounding the
pump barrel f and at the bottom of the chamber is a hole fx into the barrel the
latter extending below the chamber.
The pump barrel consists of a tube f2 with its bottom fitting into a socket f³
in a stand and having fixed to its top a ring f' on which is a screw thread to engage
with a similar thread inside the cap f. The latter is conical inside and has at
the top a conical seating to receive a cone valve g having a hole through it for
the piston rod h.
Fixed to the top of the cap f5 is a tube j similar to the pump barrel and
surrounded by a casing k fixed to the top of the annular chamber fi and having
an annular space k¹ between it and the tube. The tube i has a cover 11 attached
to it by a bayonet joint (Figure 5) and having a nut j³ at the top. The piston
rod h passes out through a central hole in this cover.
The tube contains a helical spring h¹ surrounding the piston rod and bearing on
a washer g¹ which in turn bears on a washer h* of leather or like material resting
on the valve g, the spring at its top bears against the cover ¹. By unlocking the
cover the spring can be raised and by turning the cover by means of the nut ³
the tube is unscrewed from the top of the pump barrel f³. In this way the parts
can he got at without removing the casing. A bent pipe 7 passes through the
top of the tube ; one branch descending nearly to the bottom of the annular
space and the other descending to a valve seat at the top of a hole through
the cap of the pump barrel. A valve m fits on the seat and has a stem projecting
down through the hole into the pump barrel. The lower part m¹ of this stem.
exactly fits the hole whilst the upper part m³ does not. Oil is introduced into
the pump barrel above the piston h³ and into the tube ; and the bottom of the
annular space k¹. When the piston h³ is at the bottom the barrel is in communi-
cation with the annular chamber f¹ and receives air from it. When the piston
rises first the oil and then the piston close the opening into the annular
chamber and the air is compressed in the top of the barrel f2. When the
piston h³ gets near the top of its stroke it comes against the valve stem m³ and
lifts it and the valve m but before the piston has got high enough in the barrel
to sufficiently compress the air to make it escape through the open valve, the
bottom part m¹ of the stem enters the hole and makes a tight joint. As the
piston further rises towards the top of the barrel the pressure of air lifts the conical
valve g against its spring h¹ and the air rises through the oil in the tube j
and escapes with some of the oil into the annular space baffle plates j* (Figure 5)
being provided to direct the oil downwards onto the surface of the oil already in
the bottom of the space . When the piston is at the top of its stroke the oil
above it fits the conical cap fo and completely expels the whole of the air and
some of the oil passes into the tube ; causing an overflow into the annular space k¹.
Immediately the piston begins to descend the conical valve g closes and a vacuum
is formed in the pump barrel. The valve m whose stem in resting on the piston
descends with the latter a spring being provided to prevent sticking and when
the lower part m¹ of the stem escapes from the hole, oil is sucked by the vacuum

page_text: through the bent pipe / from the annular space ¹ replacing the oil which escapes
with the air through the conical valve g.
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:
1
1. Mounting the acid bottle and water bottle with the connection between them
on a rocking trough or stand.
2. The method of mounting and rocking the bottles substantially as described
and shown in the drawings.
3. The combination of a stopper to the acid bottle, a pipe passing through it
downwards into the bottle and a second pipe surrounding the first and resting in
a seat below the stopper.
4. The combination with the stopper of the acid bottle of an upwardly projecting
tube of dermatine or the like for receiving the end of the bent tube.
5. The combination of a pump barrel, a chamber communicating with it, a tube
above the barrel, a chamber communicating with the top of the tube, and two
valves at the top of the barrel one opening from it into the tube and the other
from the upper chamber into it.
6. The combination with the subject matter of Claim 5 of :-
a. The pipe l.
b. The valve stem m¹m³ acted on by the piston.
c. The baffle plates j*.
L
1