APPARATUS FOR UTILIZING THE FLOW OF FLUIDS IN PIPES AS A SOURCE OF ENERGY
Year: 1884

page_text: PROVISIONAL SPECIFICATION,
I, JASPER WETTER, Engineer, of 67, Strand, in the City of Westminster, do
hereby declare the nature of said invention for "APPARATUS FOR UTILIZING THE
FLOW OF FLUIDS IN PIPES AS A SOURCE OF ENERGY," a communication to mo
from abroad by Théodule Glaneur, of Havre, France, to be as follows:-
This invention relates to the use of archimedian screws or sections of such
Screws (similar to those of a propeller) in the suction pipes or discharge pipes of
pumps, or in other pipes serving as fluid conduits, for the purpose of obtaining a
rotary motion of such screws or screw blades, or for increasing in certain cases the
efficiency of the pump.
The screw is a little less in diameter than the inside diameter of the pipe and
mounted in the mouth or at any other convenient part of the pipe so that the axis
of the screw coincides with the axis of the pipe, and a rotary motion of the serow
is allowed, without an axial motion of the same.
The screw shaft may either be held in a pair of fixed bearings extending across
the pipe, which remains stationary, or the screw may be made integral with a
cylindrical casing, adapted to turn inside the suction pipe of a pump, preferably by
means of friction rollers secured to the outside of the casing and running in a
circular groove or recess formed in the inner circumference of the suction pipe.
The flow of water or other fluid caused by the pump, will turn the screw on its
axis and thereby also impart rotary motion to any tool or implement attached to
the screw shaft.
In using the apparatus for dredging purposes, the screw is secured in the mouth
of the suction pipe of a centrifugal pump or other suitable pump, and the scrow
shaft projecting below the said pipe is provided with a pair of radial arms or blades
curved so as to excavate the soft ground in which they are made to turn.
In such cases the projecting lower end of the shaft may be pointed or made to
act as a drill, and the lower one of the radial blades is preferably made shorter
than the upper one,

page_text: If such a screw is applied to the suction pipe of a centrifugal pump, the tendency
of the water in the suction pipe to fall back when the pump runs too slow will be
decreased.
The same apparatus may also be adapted to act as a ship's propeller in which
case a centrifugal pump driven by a steam engine is placed near the centre of the 5
ship in a pipe conduit leading from the bow to the stern, the mouth of the suction
pipe or of the discharge pipe, or both, being provided with a screw or a set of
screw blades in the manner described; the screw shaft may be extended beyond
the pipe in order to carry an ordinary screw-propeller in front of the pipe.
A ship may have one or more pumps with suction and discharge pipes and sets 1
of screws or screw blades.

page_text: COMPLETE SPECIFICATION.
I, JASPER WETTER, Engineer, of 67, Strand, in the City of Westminster, do
hereby declare the nature of said invention for APPARATUS FOR UTILISING THE
FLOW OF FLUIDS IN PIPES AS A SOURCE OF ENERGY, a communication to me from
abroad by Théodule Glaneur, of Havre, France, 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 the use of archimedian screws or sections of such
screws (similar to those of a propeller) in the suction pipes or discharge pipes of
pumps, or in other pipes serving as fluid conduits, for the purpose of obtaining a
rotary motion of such screws or screw blades, or for increasing in certain cases the
efficiency of the pump.
The screw is a little less in diameter than the inside diameter of the pipo, and
mounted in the mouth or at any other convenient part of the pipe, so that the axis
of the screw coincides with the axis of the pipe, and a rotary motion of the screw
is allowed without an axial motion of the same.
"
The screw shaft may either be held in a pair of fixed bearings extending across
the pipe, which remains stationary, or the screw may be made integral with a
cylindrical casing, adapted to turn inside the suction or discharge pipe of a pump,
preferably by means of friction rollers secured to the outside of the casing and
running in a circular groove or recess formed in the inner circumference of the
suction or discharge pipe.
The flow of water or other fluid, caused by the pump, will turn the screw on its
axis and thereby also impart rotary motion to any tool or implement added to the
screw shaft.
In using the apparatus for dredging purposes, the screw is secured in the mouth
of the suction pipe of a centrifugal pump, and the screw shaft projecting below the
said pipe is provided with radial arms or blades curved so as to excavate the soft
ground in which they are made to turn.
In such cases the projecting lower end of the shaft may be pointed or made to
act as a drill, and the lower one of the radial blades is preferably made shorter
than the upper one.
If such a screw is applied to the suction pipe of a centrifugal pump, the tendency
of the water in the suction pipe to fall back when the pump runs too slow will bo
decreased.
The same apparatus may also be adapted to act as a ship's propeller, in which
case a centrifugal pump driven by a steam engine is placed near the centre of the
ship in a pipe conduit leading from the bow to the stern, the mouth of the suction
pipe or of the discharge pipe, or both, being provided with a screw or a set of
screw blades in the manner described; the screw shaft may be extended beyond
the pipe in order to carry an ordinary screw-propeller in front of the pipe.
There may be one or more pumps with suction and discharge pipes and sets of
BCrews or screw blades

page_text: •
In the accompanying drawings, which serve to illustrate the invention, Fig 1 is
a longitudinal section of a ship's body provided with a centrifugal pump and two
archimedian scrows serving as propellers.
Fig 2 is a vertical section through the base of the suction pipe of a pump to be
used for dredging purposes.
Fig 3 represents a modification of the arrangement shown by Fig 2.
In Fig 1 a, a are two archimedian screws mounted in the inlet of the suction
pipe band in the outlet of the discharge pipe b! of the centrifugal pump d. e is an
ordinary screw propeller mounted on the shaft of the screw a. By turning the
pump, a current is induced in the direction of the arrows, and thereby the
screws a a are set in motion.
In Fig 28 is the screw enclosed in the stationary cylindrical pipe c. The screw
shaft turns at the top in a beam or bridge & fixed across the pipe c, and is guided
near its lower end by a bearing formed by the cross beam u. v and ware curved
arms or blades fixed to the lower part of the shaft 1.
:
I
In Fig 3 the screw s¹ is made in one piece or rigidly connected with the
cylindrical casing c, mounted on three discs f. f fixed to the circumference of the
casing c¹. These discs (or friction rollers) run in a circular groove provided on the
inside of the pipe a', which forms the lower end of the suction pipe of a pump.
The pipe a¹ is made of an upper and a lower part, joined together along the
line A B which contains the axes of the discs f (or of the friction rollers). The
inside of the casing c¹ is made flush with the upper part of the pipe a¹, as shown,
while the lower part of the pipe a¹ is widened to make room for the casing c¹.
When the pump is set in action and draws water up through the suction pipe,
the screw, together with the casing c', will turn on its axis.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. The combination of a pipe serving as a liquid conduit, with an endless screw,
or parts of screws mounted concentrically in the interior of the said pipe and
adapted to turn on its axis, and one or more tools adapted to be set in motion by
the shaft of tho said screw or screws.
2. The combination of a pump, with an endless screw, or parts of such screws,
mounted concentrically in the suction pipe and adapted to turn on its axis, with or
without dredging bládes or arms mounted on the downward extension of the screw
shaft.
3. A ship's propeller composed of a rotary pump, a suction and a discharge pipe
passing from the bow to the stern of the ship and one or more endless screws,
inounted axially in the interior of the said pipe or pipes and adapted to turn in the
latter, with or without an ordinary screw propeller or propellers set in motion by
the shaft or shafts of the said screw or screws.
The whole substantially as and for the purposes described.