Improvements in Rotary Pumps.
Year: 1888

page_text: Date of Application, 11th Oct., 1888
Complete Specification Left, 6th June, 1889-Accepted, 20th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in Rotary Pumps.
1, MAX HECKING of Dortmund in the Empire of Germany, Engineer, do hereby
declare the nature of this invention to be as follows :-
The present invention relates to improvements in centrifugal pumps.
In the body of the pump rotate two blades or wings and which are mounted each
on a separate shaft. On each of these shafts is mounted an elliptical spur-wheel which
This
gears with a corresponding elliptical spur-wheel mounted on the driving shaft
elliptic spur-wheel gearing is mounted on the different shafts in such a manner, that
one of the shafts carrying one of the wings or blades is at its highest speed during
cach revolution at the moment when the other shaft is at its lowest speed. In this
manner the wings or blades in the body of the pump are moved towards and away
from each other during every revolution, and this movement is utilised to effect
suction and foreing. The inlet and outlet openings are arranged in such a manner,
that they are covered each by one of the wings or blades at the moment when the
wings or blades are nearest to each other. At the next moment one of the wings will
move at a greater speed than the other and suction and forcing will take place until
this wing has arrived at the precise place the other wing just now occupied i.e. covering
the other opening when the same operation is repeated.
This pump can be used for use air and for other fluids.
To prevent the pump breaking down through excess of pressure produced in any
unforeseen manner, each wing is provided with a valve which opens in the direction
of the rotation. These valves are weighted with springs in the well known manner.
If the pressure between the wings becomes too high through some cause or other one
of these valves will open thus allowing the excess of pressure to pass off. This
arrangement has the further advantage that in case the outlet tube is choked or
closed accidentally, a complete compensation will take place between the suction and
forcing chambers during the rotating of the wings, by means of the above described
valves.
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COMPLETE SPECIFICATION.
Improvements in Rotary Pumps.
I, MAX HECKING of Dortmund, in the Empire of Germany, 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 :-
The present invention relates to improvements in rotary pumps.
In the accompanying drawings ;-
Fig. 1 represents a front elevation of the pump, the body of the pump being in
section.
Fig. 2 represents a cross section through the body of the pump..
Fig. 3 represents a plan of the pump.
2
In the body P of the pump rotate two blades or wings fand f¹ which are mounted
each on a separate shaft a and a'. On each of these shafts is mounted an elliptical
spur wheel respectively and z which gears with a corresponding elliptical spur wheel
mounted on the driving shaft a'. This elliptic spur wheel gearing is mounted on the
different shafts in such a manner, that one of the shafts carrying one of the wings or
blades is at its highest speed during each revolution at the moment when the other
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shaft is at its lowest speed. In this manner the wings or blades in the body of the
pump are moved towards and away from each other during every revolution, and this
movement is utilised to effect suction and forcing. The inlet and outlet openings
and d are arranged in such a manner that they are covered each by one of the wings
or blades at the moment when the wings or blades are nearest to each other (fig. 2).
At the next moment one of the wings will move at a greater speed than the other
and suction and forcing will take place until this wing has arrived at the precise
place the other wing just now occupied i.e. covering the other opening when the same
operation is repeated."
This pump can be used for air and for other fluids.
To prevent the pump breaking down through excess of pressure produced in any
unforeseen manner, each wing is provided with a valve which opens in the
direction of the rotation. These valves are weighted with springs in the well known
manner. If the pressure between the wings becomes too high through some cause
or other one of these valves will open thus allowing the excess of pressure to pass off.
This arrangement has the further advantage that in case the outlet tube is choked or
closed accidentally, a complete compensation will take place between the suction and
forcing chambers during the rotating of the wings, by means of the above described
valves.
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 ;-
A pump having two blades or wings mounted on two different shafts driven by
elliptical spur wheels, and dividing the body of the pump in two chambers, in
combination with valves arranged in the wings for preventing an excess of pressure
in the body of the pump, the whole constructed and operating substantially as described
and illustrated in the accompanying drawings.
Dated this 6th day of June 1980