Year: 1888

page_text: Date of Application, 13th Sept., 1888
Complete Specification Left; 17th May, 1889-Accepted, 27th July, 1889
1, LOUIS KOOVERS, of Liege in the Kingdom of Belgium, Engineer, do hereby
declare the nature of this invention to be as follows:-
The invention relates to force and suction pumps.
It is well known that wooden or metal pistons, covered with leather, require
frequent repairing, either owing to impurities, such as sand, and other solid matter
mixed with the liquid, which obstruct the proper, working, or owing to the piston
being rendered useless by the swelling of the wood, the tearing of the leather, or the
wearing away of the body of the pump. The object of the invention is partly to
overcome these disadvantages.
In the annexed drawings:
Figures 1 and 2 are perspective views of the pump.
Figure 3 is a vertical section on a larger scale than Figures 1 and 2.
In these
A is the body of the pump, B is the stuffing box, forming a joint, and in which the
piston moves, C is a plunger, hollow or furnished with a channel, and containing a
valve. D is the pressure valve of the piston, E is the suction valve.
The water flows in the direction of the arrows. As the drawings indicate, the
pump is composed of a pump body A furnished with a suction valve E, and a stuffing
box B in this pump body moves a hollow piston C, the bottom of which is furnished
with a pressure valve D, and the top contains openings for the passage of the water.
The mode, of action of the pump is clearly shown by the drawing; during the
ascending motion of the piston, the water sucked up fills the body of the pump;
during the return movement, the water penetrates the piston by the valve D, and
leaves it by the openings G; with the next ascending motion, the water which is
above the piston runs out whilst à fresh quantity of water fills the body of the pump,
and so on.
By this invention the causes of wear and deterioration are avoided, and pumps can
be constructed of any kind of. metal of a thickness less than that which is usually
given them to resist the friction of the piston. For pumps employed in industry, and
worked by steam, or other mechanical power, the use of a plunger fitted with a valve, -
gives a uniform direction to the liquid (upwards in the drawing) which avoids the
shocks and jerks resulting from the change of direction, or the sudden pressure
imparted to the liquid by the alternating movement of the solid plunger in use at
present. A greater speed can thus be given to the pistons, and the volume of the
pump strokes may be diminished for the same discharge of-liquid..
Dated this 12th day of September 1888.
WM. P. THOMPSON & Co.,
Of 6, Lord Street; Liverpool, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Pumps.
1, LOUIS ROOVERS of Liège in the Kingdom of Belgium, 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 invention relates to pumps.
It is well known that wooden or metal pistons, covered with leather, require
frequent repairing either owing to impurities ench
os sand
and then solid matton

page_text: mixed with the liquid, which obstruct the. proper working, or owing to the piston
being rendered useless by the swelling of the wood, the tearing of the leather, or
the wearing away of the body of the pump. The object of the invention is partly to
overcome these disadvantages.
In the drawings filed with the provisional specification.
Figures 1 and 2 are perspective views of the pump.
Figure 3 is a vertical section on a larger scale than Figures 1 and 2.
In these:-
A is the body of the pump, B is the stuffing box, forming a joint, and in which
the piston moves, C is a plunger, hollow or furnished with a channel, and containing
a valve. Dis the pressure valve of the piston, E is the suction valve.
The water flows in the direction of the arrows: As the drawings indicate, the
pump is composed of a pump body A furnished with a suction valve E, and a stuffing
box B; in this pump body moves a hollow piston C, the bottom of which is furnished
with a pressure valve D, and the top contains openings for the passage of the water.
The mode of action of the pump is clearly shown by the drawing; during the
ascending motion of the piston, the water sucked up fills the body of the pump;
during the return movement, the water penetrates the piston by the valve D, and
leaves it by the, openings G; with the next ascending motion, the water which is
above the piston runs out whilst a fresh quantity of water fills the body of the pump,
and so on..
By this invention the causes of wear and deterioration are avoided, and pumps
can be constructed of any kind of metal of a thickness less than that which is usually
given them to resist the friction of the piston. For pumps employed in industry,
and worked by steam, or other mechanical power, the use of a plunger fitted with a
valve, gives a uniform direction to the liquid (upwards in the drawing) which avoids
the shocks and jerks resulting from the change of direction, or the sudden pressure
imparted to the liquid by the alternating movement of the solid plunger in use at
present. A greater speed can thus be given to the pistons, and the volume of the
pump strokes may be diminished for the same discharge of liquid.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
The construction of pumps in which the plunger is fitted with a channel and with
a valve by means of which a free course is allowed for the liquid contained in the
body of the pump, substantially as described and shown in the accompanying.
drawings.
Dated this 15th day of M 1000
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.