Improvements in Machines for Charging Water with Carbonic " Acid under Pressure, Commonly called Sodawater Pumps.
Year: 1885

page_text: Improvements in Machines for Charging Water with Carbonic
"
Acid under Pressure, Commonly called Sodawater Pumps.
JOHN PERKINS JACKSON of 9 Canning Place, Liverpool, Wine Merchants'
Engineer do hereby declare the nature of my invention for IMPROVEMENTS IN
MACHINES FOR CHARGING WATER WITH CARBONIC ACID UNDER PRESSURE COM-
MONLY CALLED SODA WATER PUMPS, to be as follows: —
:
Vertical Sodawater Pumps as hitherto constructed have been made mainly on
the pattern of a common pump but often fitted with a solid ram or plunger and of
course with valves for the inlet and outlet of the gas and water.
I believe that there is a waste of power and a tendency to straining and to.
unsteadiness in sodawater pumps on this principle for as the driving of the water
and gas out of the barrel of the pump requires the exertion of considerable power,
as they have to be driven into a cylinder already charged, and on the other hand
the simple suction of these two constituents requires little power it seems to me
that the alternately heavy and light down and up stroke have a tendency to strain.
the pump. If the crank, shaft, etcetera, of the pump are made extra heavy there
is then a waste of material as well as of power.
Now the principle of my invention is that I utilize to force the water and gas
both the upstroke and the downstroke. To do this I make the barrel of the pump
in two halves and each half I supply with the usual set of valves both of ingress
and egress and these valves may be of any suitable pattern. The two barrels are
mounted vertically one above the other, with their ends together and they should
be secured together and also rigidly and firmly held to the frame of the sodawater
machine. I prefer to make the ram or plunger extend right through the pump
barrel in the form of a guiderod and to be caused to work perfectly true.
solid plunger works through hydraulic cone leathers so as to make a perfectly
fitting joint in the barrel of the pump.
The
When the pump is in action, at each downstroke the gas and water in the lower
chamber are driven out and at the same time a fresh charge is sucked in to the
upper chamber. At the upstroke the top chamber is emptied and the bottom one
sucked full,
With properly fitting cone leathers it is impossible for the contents of the two
chambers of the pump to mix.

page_text: •
Improvements in Machines for Charging water
WITH WarDo
Acid under Pressure, Commonly called Sodawater Pumps.
•
I, JOHN PERKINS JACKSON, 9 Canning Place, Liverpool, Wine Merchant's
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 :-
:
"
Vertical "soda water pumps as hitherto constructed have been made with the
pump proper mainly on the pattern of a common pump, but often fitted with a
solid ram or plunger and of course with valves for the inlet and outlet of the gas
and water.
I believe that there is a waste of power and a tendency to straining and to
unsteadiness in soda water pumps on this principle for as the driving of water and
gas out of the barrel of the pump requires the exertion of considerable power as
they have to be driven into a cylinder already charged, and on the other hand the
simple suction of these two constituents requires little power, it seems to me that
the alternately heavy and light, or down and up stroke, have a tendency to strain
the pumping machinery. If the crank shaft etcetera of the pump are made extra
heavy there is then a waste of material as well as of power.
Now the principle of my invention is, that I utilize to force the water and gas
both the up stroke and the down stroke. To do this, I make the barrel of the
pump in two halves, and each half I supply with the usual set of valves, both of
ingress and egress, and these valves may be of any suitable pattern. The two
barrels or half barrels are mounted vertically one above the other, with their ends
together, and they should be secured together, and also rigidly and firmly held to
the frame of the soda water machine. I prefer to make the ram or plunger extend
right through the pump barrel in the form of a guide rod and so be caused to work
perfectly true.
The solid plunger works through hydraulic cup leathers so as to make a perfectly
fitting joint in the barrel of the pump.
When the pump is in action, at each downstroke the gas and water in the lower
chamber are driven out and at the same time a fresh charge is sucked into the
upper chamber. At the up stroke the top chamber is emptied and the bottom one
sucked full,
With properly fitting cup leathers it is impossible for the contents of the two
chambers of the pump to mix.
As is well known the manufacture of aerated or sodawater is practically as
follows:-
On a suitable framework or machine is fixed a pump barrel fitted with an inlet
and an outlet valve. The passage or pipe leading to the inlet valve branches out
into two pipes, one leading to a supply of water, and the other to a supply of
•

page_text: carbonic acid gas. Each pipe is controlled by a cock and as the pump sucks, it
draws a supply of both gas and water into the barrel of the pump.
At each discharge of the pump the gas and water which now form more or less
perfectly blended aerated or sodawater are drawn through the outlet valve, and by
means of a single pipe pass away into the condenser or cylinder.
In the earlier forms of "sodawater pumps
n
the gas and water were not allowed
to mingle inside the pump, but that system has long since been discarded.
The sodawater pumps generally in use in this country have a vertical pump or
pumps proper. Attempts have been made to introduce sodawater pumps with
horizontal pumps proper, but almost entirely without success. Such machines as a
rule take up much more room than vertical ones, are more ungainly and cost more,
while they have no advantages to counterbalance these defects.
I therefore construct my machines on the vertical principle and the pumps are
attached to the machine in an upright or vertical position, or approximately
thereto.
One special advantage of the double action form of my pump is that by its
means, one constant stream of aerated water is discharged from the pump into the
condenser. When the action is intermittent as with ordinary single action soda-
water pumps there is a tendency for the gas to separate from the water in the
intervals between the discharges, but when the action is continuous, there is no
time or opportunity for this to take place.
In order more fully to explain my invention, I will describe a pump which I am
using with great success for this purpose, but I do not attach any great importance
to the details or construction which I shall describe and represent as they may be
varied indefinitely as long as the principle of a vertical double action pump to
suck both gas and water through each of the inlet valves is adhered to.
In order to more fully explain my invention I have appended the annexed
drawings in which
Figure 1 is one form of machine as a whole.
Figure 2 is a section of one form of my pump proper.
☑
It is obvious however, that my pump can be used with almost any other form of
sodawater machine now in use; in which ordinary single acting vertical pumps are
used at present.
In the drawings A is a disc and eccentric pin on the main shaft B. C connecting
rod, D cross head sliding in guides E, E, F pump body, G, H, valve chambers.
I cylinder, J driving belt driving agitator in cylinder, K fast and loose belt pullies
for connecting the soda water pump as a whole with the line of shafting.
When the machine is at work water is sucked in at the openings S, S, and gas
at the openings T, T, the proportion of each being regulated by means of the
cocks V, V. The gas and water pass in through the suction valves L, L, into the
barrel of the pump, and the aerated water passes out through the exit valves M, M,
and away to the cylinder or condenser.
Referring now to the details drawing, L L are the suction valves, M, M, exit
valves, O passages, P, P plunger, Q cup-leathers in centre of barrel R, dividing the
pump into two parts.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I am well aware that
"sodawater pumps" on the same general lines as that set forth in Figure 1, but
with single acting pumps proper are well known, also that apart from sodawater
machines double-acting pumps proper have been used to pump water and other
liquids or gases for many years past. I am also well aware that horizontul double
action pumps have been used in connection with the manufacture of aerated waters
but owing to their occupying large space and requiring extended foundation plates,
they have been practically discarded. Furthermore I know that two separate
single action vertical pumps have been used in a single sodawater machine to

page_text: increase the throw and give greater steadiness in working, but the use of two
pumps greatly adds to the cost and intricacy of the machine, I know of no instance
however, where it has been proposed to combine in the one machine known as a
"sodawater pump" a vertical pump proper double acting and sucking both gas
and water at each end, I declare that what I claim is:
a
The manufacture and use of those kinds of machines technically known as soda
water pumps or sodawater machines with a vertical double acting pump pumping
sucking in and out both gas and water at each end of the cylinder.
of 100A