Year: 1894

page_text: Date of Application, 17th May, 1894
Complete Specification Left, 31st Jan., 1895-Accepted, 27th Apr., 1895
A communication by the Firm of BERTRAM & GRAF, of 78, Enckergrube,
Lübeck, in the Empire of Germany, Merchants.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this invention
to be as follows :—
The liquid manure and the like pumps hitherto employed have the drawback
that, owing to the small distance between the suction and the pressure valve, any
passage of even the smallest solid substances is rendered extremely difficult if not
impossible. This drawback is removed by the improved pump which forms the
object of this invention, in which a pressure valve is not employed at all.
The pump consists of a cast iron foot piece on which the suction pipe and the
lifting pipes are suitably attached. Inside this suction pipe, a piston is placed,
which receives its upward and downward movement from an operating bar attached
thereto.
At the
A suction valve is arranged at the end of the inflow nozzle, and is connected to
the same in such a way that no obstacle can lodge or stick in the same.
upper end of the lifting pipe, there is a valve shaped head or joint, on which a
small bar or lever with a cast iron disc is firmly guided or held by means of a guide
or socket. This socket serves for keeping off the outer air pressure from the top
of the lifting pipe. The valve shaped head or joint assists the action of the pump
by shutting off the upper end of the pump on the rising of the piston or of the
upper end of the lifting pipe. The solid matter, such as shards, stones, rags, small
bits of wood, shavings, and the like, cause no obstruction to the closing of the valve
shaped joint, as, if necessary, it yields, and so allows room and unimpeded exit.
As regards the valve shaped head or joint, it must further be noted that a
movable sheet metal plate with a round indiarubber plate is arranged beneath the
removable valve covering cap on the guide rod, so that an always secure air tight
joint is obtained.
If it should happen (which is very seldom the case) that, during the working of
the pump, a solid body comes between the valve head or joint and the seat on the
upper end of the lifting pipe exactly at the moment when the head or joint should
close, such an obstacle then visible from above as well as all those which, on
account of their size, cannot run off with the liquid, may be removed by band at
the top of the valve shaped head or joint, or from the seat on the upper end of the
lifting pipes.
The upper and lower lifting pipes are connected by a suitable flange arranged
over the centre, and the upper part, which is inserted in the same towards the
interior, may be adjusted up and down, as may be desired, so that the pump may be
suitably fixed and raised. A discharging device is also attached to the pump, so
that, after it has been used, it may be more easily removed from the water, or
from the liquid manure tank. The discharging device itself consists of a movably
arranged two-armed lever, one arm of which acts on the suction valve, and the
other arm, serving for operating the device, is connected with a wire rod on the
outside of the nine.

page_text: The emptying of the pump takes place as follows :—
The screws on the connecting flange are first opened, and the wire rod is drawn
upwards so that the suction valve is opened and the liquid contained in the pump
escapes.
The working of the pump is as follows:
If the pump be placed in the water and the piston drawn upwards, the space
within the pump filled with air is increased, and the consequence of this is that
first a partial vacuum is formed in the lower lifting pipe; and, secondly, the suction
valve opens and water penetrates into the suction pipe. On the piston being
pressed downwards, the suction valve closes, and the water passes with great
rapidity into the partial vacuum existing in the lower lifting pipe.
On the piston being again drawn upwards and the self-opening of the suction
valve connected therewith, the quantity of water already present in the lifting pipe
can no longer return, because the water flowing through the suction valve, in
consequence of the pressure of air upon the same, as well as the closing of the valve
shaped head or joint of the lifting pipes, more than counterpoises the quantity of
water contained in the lifting pipe.
By there not being a pressure valve at the bottom of the lifting pipe; in addition
to removing the drawbacks hereinbefore mentioned, there are produced two
communicating pipes, which, as their communication: is never interrupted by a
valve, assist in diminishing, to a considerable extent, the height of lift, and with it
the pressure or the actual amount of force that is required to be exerted when
pumping. The capability of the pump is consequently considerably greater than
that of any other system:.
The pump takes stones up to a diameter of 4 centimetres.
100
A communication by the Firm of BERTRAM & GRAF, of 78, Enckergrube,
Lübeck, in the Empire of Germany, Merchants.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E. of The Agency for
Foreign Patent Solicitors 6 Lord Street, Liverpool, and 6 Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
The liquid manure and the like pumps hitherto employed have the drawback
that, owing to the small distance between the suction and the pressure valve, any
passage of even the smallest solid substances is rendered extremely difficult if not.
impossible. This drawback is removed by the improved pump which forms the
object of this invention, in which a pressure valve is not employed at all..
On the accompanying drawing a
Figure 1 is an elevation of the pump;
Figure 2, a vertical section';
Figure 3, an elevation showing part of the pump in section.
The pump consists of a cast iron foot piece a on which the suction pipe b and the
lifting pipes are suitably attached. Inside this suction pipe b, a piston d is placed,
which receives its upward and downward movement from an operating bare attached
thereto..
A suction valve is arranged at the end of the inflow nozzle g, and is connected

page_text: Z
to the same in such a way that no obstacle can lodge or stick in the same.. At the
upper end of the lifting pipe there is a. valve box h, in which a small rodior
spindle i, with a cast iron disc or valve: attached at its lower end works thro? a
guide or socket in the cover.k of the valve. box. This cover k, serves for keeping
off the outer air pressure from the top of the lifting pipe. The valve box assists
the action of the pump by its valve closing the upper end of the pump (or rather
the upper end of the lifting pipe c) on the rising of the. piston d.. The solid
matter, such as shards, stones, rags, small bits of wood, shavings, and the like,
causes no obstruction to the closing of the valve, as, if necessary, it yields, and so
allows room and unimpeded exit.
As regards the valve; box, h, it must further be noted that a round indiarubber
plate is arranged beneath the removable valve box cover k on the valve plate i, so
that an always secure air tight joint is obtained.
If it should happen (which is very seldom the case) that, during the working of
the pump, a solid body comes between the valve i' and the seat on the upper end
of the lifting pipe exactly at the moment when the valve should close, such an
obstacle then visible from above as well as all those which, on account of their size,
cannot run off with the liquid, may be removed by hand at the top of the valve
head, or from the seat z on the upper end of the lifting pipes.
The upper lifting pipe z and lower lifting pipes c are connected by a suitable
gland l, so that the upper lifting pipe z, which is inserted in the lower lifting pipe
may be adjusted up and down as may be desired, and the pump may be fixed at any
suitable height. A discharging device n is also attached to the pump, so that,
after it has been used, it may be more easily removed from the water, or from the
liquid manure tank. The discharging device itself consists of a movably arranged
two-armed lever as may be seen on the drawing, one arm of which acts on the
suction valve, and the other arm, serving for operating the device, is connected
with a wire rod m on the outside of the pipe.
The emptying of the pump takes place as follows:-
The screws on the connecting flange are first opened, and the wire rod in is
drawn upwards so that the suction valve fis opened and the liquid contained in the
pump escapes.
The working of the pump is as follows:-
If the pump be placed in the water and the piston d drawn upwards, the space
within the pump filled with air is increased, and the consequence of this is that first
a partial vacuum is formed in the lower lifting pipe c; and, secondly, the suction
valve fopens and water penetrates into the suction pipe b. On the piston d'being
pressed downwards, the suction valve closes, and the water passes with great
rapidity into the partial vacuum existing in the lower lifting pipe c.
On the piston d being again drawn upwards on the automatic opening of the
suction valve connected therewith, the quantity of water already present in the
lifting pipe can no longer return, because the water flowing through the suction
valve, in consequence of the pressure of air upon the same, as well as the closing
of the valve of the lifting pipes, more thau counterpoises the quantity of water
contained in the lifting pipe.
By there not being a pressure valve at the bottom of the lifting pipe, in
addition to removing the drawbacks herein before mentioned, there are produced two
communicating pipes b and c, which, as their communication is never interrupted by
a valve, assist in diminishing, to a considerable extent, the height of lift, and with
it the pressure or the actual amount of force that is required to be exerted when
pumping. The capability of the pump is consequently considerably greater than
that of any other system.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondents, I declare that what I claim is :-
1. In pumps of the kind described the arrangement instead of the pressure valves
'

page_text: hitherto employed of a valve within a box (4) adapted to shut off tightly the
lifting pipe (c) or rather its upper end (2) when the suction piston (d) is drawn
upwards so that any forcing back of the liquid contained in the lifting pipe is
rendered impossible, substantially as herein before described and illustrated.
2. In pumps of the kind described, the arrangement of a discharging device
consisting of a movably arranged two armed lever, of which one arm acts on a
suction valve (f) when the other arm is operated substantially as described and
illustrated.
Dated this 30th day of January 1895
WM. P. THOMPSON & Co.,
Agents.