IMPROVEMENTS IN PUMPS OR APPARATUS IN WHICH THE MOTOR FLUID PRESSURE IS APPLIED DIRECTLY
Year: 1883

page_text: LETTERS PATENT to Peter Jensen of 33 Chancery Lane in the County of
Middlesex, for an Invention of "IMPROVEMENTS IN PUMPS OR APPARATUS
IN WHICH THE MOTOR FLUID PRESSURE IS APPLIED DIRECTLY" communicated.
to him from abroad by Joseph François and Guillaume Dubois both of
Saming Baloium
PROVISIONAL SPECIFICATION, left by the said Peter Jensen at the Office
of the Commissioners of Patents on the 22nd October 1883.
" IMPROVE-
PETER JENSEN of 33 Chancery Lane in the County of Middlesex
MENTS IN PUMPS OR APPARATUS IN WHICH THE MOTOR FLUID PRESSURE IS APPLIED
DIRECTLY A communication to me from abroad by Joseph François and
Guillaume Dubois both of Seraing Belgium,
"
In apparatus constructed according to this invention the bottom or end of the
motor cylinder communicates with the chamber between the inlet valve and the
outlet or.delivery valve and is fitted with a float or piston. The admission of
fluid pressure such as compressed air or steam to the top or other end of the motor
cylinder for the purpose of raising the water is effected by means of a slide valve
which is impelled by the pressure fluid regulated by tappet motion from the float
or piston.
A suitable mode of constructing this apparatus is as follows:
The water to be raised enters by a vertically descending pipe through an inlet
valve into a chamber which is in direct communication with the underside of the
float or piston in the motor cylinder and passes up through the delivery valve into
the rising main. The float may be made of wood encased in sheet metal. The
compressed air for delivery of the water is admitted to the other or top end of the
cylinder and its admission or distribution is regulated by the action of the float,
the travel of which in the cylinder depends on the movement of the water in the
body of the pump that is to say the valve chamber and the lower part of the
cylinder. The float or piston has a rod which passes up through a pipe closed at
the top and having a slide valve box with a port for inlet and outlet of the
compressed air to and from the upper part of the cylinder and with an exhaust

page_text: port. The slide valve is provided with an upper and a lower piston or plunger-
like continuation. Each piston has an interior passage with lateral openings into
the slide valve box for admitting compressed air from the latter into a chamber at
the upper and lower ends of the said pistons for the purpose of acting on their
ends. Each chamber has a valve opening towards the interior of its chamber and b
the action of these valves determines the travel of the slide valve, the valves
alternately causing the compressed air to escape from their chambers by small
openings. The action of the valves is regulated by the float rod the upper end of
which acts against a tappet lever that serves to depress and open the small valve
on the top of the chamber for the upper slide valve piston, while a collar on the
float rod acts against a tappet lever which similarly serves to open the small valve
on the bottom of the chamber for the lower slide valve piston. Each of the aforesaid
small valves is closed by helical or other spring.
The water inlet valve opens as soon as the air pressure ceases as it is connected
to a small piston in a cylinder which communicates with the motor cylinder; or a 1
counterweight will answer the same purpose or a spring.
By superposing a series of pumps of this kind the water may by more or less air
pressure be elevated to any desired height. The pumps having each its independent
motion those placed above may without mechanical difficulties receive more water
than those lower down, and hence greater or smaller quantities at different levels.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Peter Jensen in the Patent Office on the 22nd April 1884.
PETER JENSEN of 33 Chancery Lane in the County of Middlesex "IMPROVE
MENTS IN PUMPS OR APPARATUS IN WHICH THE MOTOR FLUID PRESSURE IS APPLIED
DIRECTLY" (A communication to me from abroad by Joseph François and
Guillaume Dubois both of Seraing, Belgium
In apparatus constructed according to this invention the bottom or end of the
motor cylinder communicates with the chamber between the inlet valve and the
outlet or delivery valve and is fitted with a float piston. The admission of fluid
pressure such as compressed air or steam to the top or other end of the motor
cylinder for the purpose of raising the water is effected" by means of a slide valve
which is impelled by the pressure fluid regulated by tappet motion from the float
or piston.
A suitable mode of constructing this apparatus is as follows:-
As shown in the accompanying drawings, Figure 1 is a vertical section of the
whole apparatus, Figure 2 a horizontal section through the slide valve chest, and
Figure 3 a plan section through the lower part of the pump Figure 4 is a vertical
section showing another arrangement for working the valve B; Figures 5 and 6
are plan sections of the tappet arrangements at T and T respectively Figure 1.
.>
The water to be raised enters by a vertically descending pipe A through an inlet
valve B into a chamber S which is in direct communication with the underside of
the float piston D in the motor cylinder V and passes up through the delivery
valve C into the rising main C. The float may be made of wood encased in sheet
metal as here shown. The compressed air for delivery of the water is admitted to
the other or top end of the cylinder, and its 'admission or distribution is regulated
by the action of the float D, the travel of which in the cylinder depends on the
movement of the water in the body of the pump that is to say the valve chamber S
and the lower part of the cylinder V. The float piston D has a rod P which passes
up through a pipe closed at the top and having a slide valve box E' with a port
for inlet and outlet of the compressed' air to and from the upper part of the
cylinder V and with an exhaust port. The slide valve is provided with an upper
and a lower piston or plunger-like continuation G and H respectively. Each piston
bas an interior passage with lateral opening and into the slide valve box E
for admitting compressed air from the latter into a chamber K and L respectively
at the upper and lower ends of the said pistons G and H for the purpose. of acting
on their ends. Each chamber has a valve M and N respectively each opening
towards the interior of its chamber and the action of these valves determines the
travel of the slide valve F, the valves M and N alternately causing the compressed
air to escape from their chambers K and L by small openings o¹ and o³ respectively.
The action of the valves M and N is regulated by the float rod P the upper end of
of which acts against a tappet lever Q on a spindle S'which is fitted with a lever I'
that serves to depress and open the small valve M on the top of the chamber K for
the upper slide valve piston G, while a collar U on the float rod Pacts against a
tappet lever TR which similarly serves to open the small valve N on the bottom
of the chamber L for the lower slide valve piston H. Each of the aforesaid small
valves is closed by helical springs as shown or by other springs.
The water inlet valve B opens as soon as the air pressure ceases as it is connected
to a small piston Y in a cylinder X which by a pipe y communicates with the
motor cylinder V; or a counterweight Z shown at Figure 4 will answer the same
purpose or a spring.
The action of the apparatus is as follows:-
Before starting the slide valve F assumes its lowest position by the action of its
own weight, thus establishing communication with the atmosphere and allowing

page_text: the water to enter freely from the pipe A and through the valve B. the piston
float D is thereby raised thus liberating the tappet R and allowing the valve N to
close. The pressure on the end of the plunger H will then become the same as
that on the end of the plunger G. the float piston D continuing to rise in proportion
as the cylinder V becomes filled with water the end of the rod P comes in contact
with the tappet QT and thus opens the valve M and relieves the pressure in the
chamber K whereby the pressure on plunger H lifts the slide F thus admitting
compressed air above the piston D through the port Fi and expelling the water
contained below the piston D through the delivery valve C into the rising main C¹
to a height corresponding to the-air pressure. The piston D being enabled to
descend and the collar U on the rod P-acting on the tappet R T¹ will open the
valve N after the valve M has been previously, allowed to close.
This play of the valves forces the slide valve F to resume its first position in
order to allow the compressed air to escape and permit the water to enter and fill
the pump again by the valve B in the pipe A which opens as soon as the pressure
of the compressed air disappears because the action of the piston V ceases to hold
it closed. The piston V-situated in the cylinder X which is connected by the
pipe Y with the air pressure admission port F' to the interior V of the pump may
be replaced by a simple counterweight.Z as-shown at Figure 4 and which serves
to close again the inlet valve B which in this case will open again by the effect of
the column of water in the inlet pipe A.
By superposing a series of pumps of this kind the water may by more or less
air pressure be elevated to any desired height. The pumps having each its
independent motion those placed above may without mechanical difficulties receive
more water than those lower down, and hence greater or smaller quantities.at
différent levels.
Having now described the nature of the said Invention as communicated to me by.
my foreign. correspondent and in what manner the same is to be performed I
declare that I claim.
Firstly The combination of parts forming the improved pump. actuated by
compressed air substantially as described.
Seconaly:-The combination of a series of the improved pumps one above the
other and acting independently of each other and forming a system for pumping up
water from great depths in mines and if required delivering different quantities of
water at different levels substantially as described.
In witness whereof I the said Peter Jensen have hereunto set my hand and seall
this twenty-first day of April in the year of our Lord One thousand eight hundred
and eighty four