New or Improved Combined Water Motor and Sewage Pump.
Year: 1890

page_text: Date of Application, 14th Feb., 1890
Complete Specification Left. 14th Nov., 1890-Accepted, 20th Dec., 1890
PROVISIONAL SPECIFICATION.
New or Improved Combined Water Motor and Sewage Pump.
I, JOHN DOWNTON of 71 West India Dock Road, London, E. Engineer do
hereby declare the nature of this invention to be as follows:-
This invention relates to a new or improved combined water motor and sewage
pump, which will be found especially applicable for use in conjunction with water
closets, urinals, baths, and the like, for withdrawing the sewage or waste water there-
from and discharging it into the sewer.
Its chief object is to provide a simple and efficient combined motor and pump
which may be automatically worked by the pressure of water direct from the main.
According to my invention, the motor, (which is double acting,) consists of a piston
sliding within a cylinder having the usual inlet and exhaust ports, which are opened
and closed to permit the admission and exit of the water under pressure to and from
the cylinder, by a slide valve working within a jacket and actuated from the piston
rod by a peculiar arrangement of mechanism hereinafter described.
Water under pressure is admitted to the cylinder of the motor through the slide
valve jacket, by means of a pipe leading into such jacket from the main. When the
pressure of the water causes the piston to reach the end of its stroke, a quick
instantaneous movement is immediately imparted to the slide valve causing it to
close the port through which the water has just entered and open the port previously
closed, thereby admitting water to the other side of the piston. This quick instan-
taneous movement of the slide valve is effected by the following arrangement :-
connected with the slide valve, so as to impart reciprocating motion thereto upon
being rocked or vibrated, is a quadrant lever, working upon an axis or pivot, between
the free arms of this quadrant lever is situate a striking weight, carried by the upper
end of a pivotted lever moving in a vertical plane; this striking weight tends to fall
to one side or the other of its pivot or axis according to the position of its centre of
gravity, and in so doing strikes against one or other of the free arins of the quadrant
lever, (which may be provided with rubber or other suitable buffers to receive the
impact of the weight,) and by its momentum imparts, through the quadrant lever,
quick and instantaneous movement to the slide valve in one or other direction
according to which arm of said quadrant lever it strikes against. The lower end of
the pivotted lever carrying the striking weight is connected with a rod or spindle
engaged by an arm or crosshead fixed to the piston rod, the said spindle and arm
being so arranged and disposed as to move the centre of gravity of the striking
weight past the vertical centre line of its pivot or axis and then permit it to over-
balance and fall in one direction or the other by the action of gravity at the moment
the piston reaches either end of its stroke.
During its stroke the piston forces the waste water in front of it through a suitable
exhaust port and pipe connected therewith into a convenient tank or cistern, which, in
cases where my invention is employed in conjunction with water closets, urinals, and'
the like, may be the supply tank or cistern of the same; there is consequently no
waste or loss of water, the water which has served for operating the pump being again
utilized for flushing or other purposes.
The free end of the piston rod of the motor is prolonged and passes into the
pump cylinder, to the piston' of which it is secured. The said pump is double acting,
and its cylinder communicates on one side, by suction valves at the top and bottom
and suitable pipes, with the source from which the sewage or waste water is to be
drawn, and on the other side by corresponding discharge valves and suitable pipes
with the sewer.
I prefer to connect the two suction valves of the pump by a passage
cast in one therewith, the discharge pipes of the water closet, urinal, bath, or the like.

page_text: as the case may be, being connected with an inlet in such passage, preferably
provided with a back pressure valve serving also as a stink trap. The two discharge
valves of the pump are connected by a similar, passage, an outlet in which passage,
(also preferably provided with a back, pressure or non return valve,) is-connected with
a discharge pipe leading to the sewer."
Dated this 14th day of February 1890.
E. P. ALEXANDER & SON, Fels. Inst. P.A.,
A gents
COMPLETE SPECIFICATION.
New or Improved Combined Water Motor and Sewage Pump.
I, JOHN DOWNTON, of 71 West India Dock Road, London, E., 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:
This invention relates to a new or improved combined water motor and sewage
pump, which will be found especially applicable for use in conjunction with water
closets, urinals, baths, and the like, for withdrawing the sewage or waste water there-
from, and discharging it into the sewer.
Its chief object is. to provide a simple and efficient combined water motor
and pump, which may be automatically worked by the pressure of water direct from
the main.
According to my invention, the motor, (which is double acting,) consists of a piston
sliding within a cylinder having the usual inlet and exhaust ports which are opened
and closed automatically to permit the admission and exit of the water under pressure
to.and from the cylinder by a slide valve working within a jacket and actuated from
the piston rod by a peculiar arrangement of mechanism hereinafter described.
Water under pressure is admitted to the cylinder of the motor through the slide
valve jacket by means of a pipe leading into such jacket from the main. When the
pressure of the water causes the piston to reach the end of its stroke, a quick
instantaneous movement is immediately automatically imparted to the slide valve,
causing it to close the port through which the water has just entered, and open the
port previously closed, thereby admitting water to the other side of the piston. This
quick instantaneous movement of the slide valve is effected by means of a weight, free
to move in a vertical plane upon an axis or pivot, and having its centre of gravity
situate above the same, the weight thus always tends to fall to one side or the other of
the vertical centre line of its axis, according to the position of its centre of gravity,
and in falling moves or strikes against a pivotted lever the free end of which engages
with the slide valve and moves it in one direction or the other according to which side
of its axis or pivot the weight falls, the momentum of the falling weight causing such
motion of the slide valve to be quick and instantaneous. The shifting of the centre
of gravity of the weight past the vertical centre line of its axis or pivot, so as to
cause it to overbalance or fall, by the action of gravity, upon one or the other side
thereof, is automatically effected by means of a lever connected with the weight, and
actuated by suitable connections from the piston rod, such lever and connections being
so arranged and constructed as to cause the weight to overbalance and fall at the.
moment the piston reaches either end of its stroke..
During its stroke the piston forces the waste water in front of it through a suitable
exhaust port, and pipe connected therewith, into a convenient tank or cistern, which,
in cases where my invention is employed in conjunction with water closets, urinals,
and the like, may be the supply tank or cistern of the same, there is consequently no
waste or loss of water, the water which has served for operating the pump being again
utilized for flushing or other purposes.
The free end of the piston rod of the motor is prolonged and passes into the pump
cylinder to the piston of which it is secured. The said pump is double acting and its

page_text: cylinder communicates on one side by suction valves at the top and bottom and
suitable pipes with the source from which the sewage or waste water is to be drawn,
and on the other side by corresponding discharge valves and suitable pipes with the
sewer. I prefer to connect the two suction valves of the pump by a passage cast in
one therewith, the discharge pipes of the water closet, urinal, bath, or the like, as the,
case may be, being connected with an inlet or inlets in such passage preferably each
provided with a back pressure valve serving also as a stink trap. The two discharge
valves of the pump are connected by a similar passage, an outlet in which, (also pre-
ferably provided with a back pressure or non-return valve,) is connected with a
discharge pipe leading to the sewer.
The accompanying drawing represents in sectional elevation a combined motor and
pump constructed according to my invention.
lis
a is the cylinder of the motor within which works the piston b. cc are the inlet ports
and d is the exhaust pori. e is the slide valve contained within the jacketf. g is a
quadrant lever mounted upon an axis or pivot h, the lower arm of which lever-engages
with a slot or recess in the upper surface of the slide valve e. k is a weight
disposed between the upper arms of the quadrant lever g, (which upper arms are
preferably situate as shewn ontside the slide valve jacket). and mounted freely at
its lower end upon the axis h, its centre of gravity being situate above the same.
a lever arm attached to the weight k and connected at its free end by a rod m with
an arm or crosshead secured to the piston rod o, within which arm n the rod m
has a certain amount of vertical play limited by the nuts and y. a' is the pump
cylinder, and 6 the piston thereof secured to the lower end of the piston rod o-
pp are the suction valves connected by the passage q-p! pare the discharge valves
also connected by a passage q. ss are inlet pipes, (preferably each provided with
a back pressure or non-return valve p² serving also as a stink trap) connected with
the closets, urinals, baths, or the like, for drawing off the sewage or waste water
therefrom, and t is a discharge pipe. (also preferably provided with a back pressure
or non-return valve p²) leading into the sewer. u is the supply pipe from the
main, and w the exhaust pipe.
The action of the apparatus is as follows:-
Water under pressure from the main is admitted to the slide valve jacket f
through the pipe u, and from thence passes into the cylinder a through one of the
inlet ports c, the pressure of the water forces down the piston b and during its
descent the weight k is gradually moved to a vertical position by means of the lever /
connected by the rod m with the crosshead or arm n of the piston rod; at the moment
the piston comes to the end of its stroke the weight k will have been moved
sufficiently to bring its centre of gravity past the vertical centre line of its pivot or
axis h, it will consequently overbalance or tip over, (this being permitted by the
play of the rod m in the arm or crosshead n) and in falling will strike against and
move by its momentum one of the upper arms of the quadrant lever.g, (which upper
arms may be provided with rubber buffers z to receive the impact of the weight,)
the lower arm of the quadrant lever y which engages with the slot i will then instan-
taneously move the slide valve e and close the port c at the same time opening the
port c' through which the water from the main will then pass thus raising the piston b
again until it reaches the end of its upward stroke when the weight will by the
same means be caused to overbalance and fall in the opposite direction and strike
against and move by its momentum the upper arm of the quadrant lever g which
in the same manner will instantaneously move the slide valve e in the reverse direction
and restore it to the original position shewn in the drawings. As the piston moves in
either direction it drives the waste water before it through the exhaust port d which
preferably communicates by a pipe w with the cistern or source which supplies the
closets urinals and the like, to be again employed for flushing purposes. all waste of
water being thus prevented. The piston of the pump being on the same piston rod
as the motor piston of course moves therewith, in the drawings it is represented as
making its downward stroke the upper suction valve p and lower discharge valve pl

page_text: are consequently open; during the upward stroke of the piston these valves will be
closed and the lower suction and upper discharge valves opened.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A combined water motor and pump wherein the movement of the slide valve is
effected by means of a weight, moving freely upon an axis or pivot situate below its
centre of gravity, and so connected with the piston rod as that it will be automatically
caused to overbalance and fall, by the action of gravity, first upon one side of the
vertical centre line of the axis or pivot and then upon the other side, according as,
and at the moment when, the piston reaches the end of either its lownward or upward
stroke, substantially as described.
2. The combination with the slide valve e of the quadrant leg, weight k, lever
arm 1, rod m, and arm or crosshead » secured to the piston rdo, substantially as
described and illustrated in the drawings.
3. The general combination of parts constituting a combined water motor and pump
substantially as described.
Dated this 14th day of November 1889.
E. P. ALEXANDER & SON, Fels. Inst. P.A.,
19, Southampton Buildings, London, Agents.