Year: 1885

page_text: We, JOHN GOLDIE CHAPMAN of 91 Church Street Birkenhead in the County of
Chester Merchant and ROBERT FOOTE of 40 Brownlow Street Liverpool in the
County of Lancaster Mineral Water Manufacturer do hereby declare the nature of
this invention to be as follows:-
The pumps for soda water machines as at present constructed are usually single
acting, which causes the mixed water and gas to be forced into the receiver in an
irregular or intermittent stream, though we are at the same time aware that with
some machines double acting horizontal pumps are used.
This invention relates chiefly to double acting vertical force pumps for soda
water machines.
The pump is constructed with a vertical cylinder with a piston or plunger
working therein. The cylinder is fitted both top and bottom with inlet and
discharge or delivery valves. These valves are fitted into a valve chest or casing
of shape and dimension suitable to contain them: a rectangular valve chest will
be found in practice to answer. Three pipes connect with each of these valve
chests, namely, one through which the water enters, one through which the gas
enters, and the other the delivery pipe through which the mixed water and gas are
discharged and conveyed to the reservoir or receiver in which they are contained.
Each of the inlet pipes is provided with a tap or valve so that the quantity of
either of the fluids passing into the pump cylinder can be regulated. Two of the
taps may be entirely closed admitting water only at one stroke of the pump and
gas at the other stroke. The pump cylinder is made in two parts in its length,
fastened together by bolts passing through flanges. Between the same flanges
passes the table of the machine, the bolts acting for the double purpose of securing
the two parts of the cylinder together and for securing the pump in position. The
valves used may be of any suitable construction, such as small flap or ball valves,
but we prefer dead lift valves held in normal position by springs until the pressure
acts upon them. On the delivery pipe a short distance from the valve we place a
series of perforated plates or discs through the perforations of which the mixture
of gas and water is forced. The object of these is to cause a more intimate
combination to take place between the gas and water. After passing through
these plates the mixture is conveyed to the receiver. The mixing of the gas and
water by passing through the perforated plates on its course from the pump to the

page_text: °
receiver obviates the necessity of having an agitator in the receiver. The piston or
plunger working in the cylinder may be of any known suitable construction, but
we prefer one made of india-rubber or leather, which can be expanded circum-
ferentially by being compressed or drawn together longitudinally. To effect this
without removing the piston from the cylinder or unscrewing the cylinder cover,
we make the piston rod double. The inner rod passes through the piston with a
flange or washer on top, the outer hollow rod abuts against the piston. At this
end it is provided with a female screw to correspond with a screw cut or chased
on the inner rod. The solid rod is first fitted into position in the piston and then
passed through the hollow outer rod until the screws engage one with the other, the
Hange of the outer rod is then screwed up against the end of the piston. A square
or nut is provided on this rod so that without displacing the piston or cylinder it
may be tightened up.

page_text: We JOHN GOLDIE CHAPMAN of 91 Church Street, Birkenhead in the County of
Chester, Merchant, and ROBERT FOOTE of 40 Brownlow Street, Liverpool in the
County of Lancaster, Mineral Water Manufacturer, 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 pumps for soda water machines as at present constructed are usually single
acting, which causes the mixed water and gas to be forced into the receiver in an
irregular or intermittent stream, though we are at the same time aware that with
some machines double acting horizontal pumps are used.
This invention relates chiefly to double acting vertical force pumps for soda
water machines.
Referring to the accompanying drawings
Sheet 1. Figure 1 perspective view of pump for soda water machine constructed
in accordance with our invention.
Sheet 2, Figure 2, Sectional elevation of pump barrel, showing position of valves
in valve chests.
Figure 3, Sectional elevation showing improved construction of pump piston.
A is a vertical cylinder with a piston or plunger G working therein. The
cylinder is fitted both top and bottom with inlet valves. A', and discharge or
delivery valves A². These valves are fitted into valve cheats or casings B, B¹ of
shape and dimension suitable to contain them. Rectangular valve chests such as
shown will be found in practice the most convenient form. Three pipes connect
with each of these valve chests, namely one C through which the water enters,
one D through which the gas enters, and the other E, the delivery pipe, through
which the mixed water and gas are discharged and conveyed to the reservoir or
receiver in which they are contained. Each of the inlet pipes is provided with a
tap or valve c, d, so that the quantity of either of the fluids passing into the pump
cylinder can be regulated. Two of the taps may be entirely closed, admitting
water only at one stroke of the pump, and gas at the other stroke. The pump
cylinder is made in two parts a a¹ in its length, fastened together by bolts a*
passing through flanges as shown. Between the same flanges passes the table of
the machine, the bolts acting for the double purpose of securing the two parts of
the cylinder together, and for securing the pump in position. This table is not
shewn in the drawing. The valves used may be of any suitable construction, such
as small flap or ball valves, but we prefer dead lift valves, held in normal position
by springs a as shown, until the pressure acts upon them. In the delivery pipe E,
a short distance from the valve, we place a series of perforated plates or discs F,
through the perforations of which the mixture of gas and water is forced. The
object of these is to cause a more intimate combination to take place between
the gas and water. After passing through these plates the mixture is conveyed to
the receiver. The mixing of the gas and water by passing through the perforated
plates on its course from the pump to the receiver obviates the necessity of having
an agitator in the receiver. The piston or plunger G working in the cylinder A

page_text: may be of any known suitable construction, but we prefer one made of india
rubber or leather, which can be expanded circumferentially by being compressed
or drawn together longitudinally as shown in Figure 3. To effect this without
reinoving the piston from the cylinder or unscrewing the cylinder cover, we make
the piston rod double. The inner rod g passes through the piston G with a flange
or washer g on top, the outer hollow rod g' abuts against the piston. At this end
it is provided with a female screw to correspond with a screw g³ cut or chased on
the inner rod g. The solid rod is first fitted into position in the piston, and then
passed through the hollow outer rod, until the screws engage one with the other,
the flange g of the outer rod is then screwed up against the end of the piston.
A square g³ or nut is provided on this rod, so that without displacing the piston
or cylinder it may be tightened up. A lock nut g is also provided on the
inner rod g. The leather or india rubber H is compressed between the flanges g¹
and g*.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed we wish it to be
understood that we do not claim broadly or generally the use of double acting
vertical pumps, but that what we believe to be new and desire to claim is ;
1st A double acting force pump for and combined with a soda water machine
having a vertical cylinder, with valves and valve chests top and bottom, and inlet
and outlet pipes connected therewith, substantially as described and shown.
2nd In the delivery pipe of the force pump of a soda water machine, the use of
perforated discs or plates, substantially as and for the purposes described.
3rd A piston for pumps of soda water machines constructed of leather or india
rubber, having an inner piston rod screwed into the external one, and fitted with
flange or washer, substantially as and for the
described.
purposes
D
T. 1000
WM P. THOMPSON & Co.,
Agents for the Applicants,