Improvements in Apparatus for Propelling, Compressing, and Exhausting Fluids by Fluids.
Year: 1896

page_text: Date of Application, 15th May, 1896
Complete Specification Left, 13th Feb., 1897-Accepted, 1st May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Propelling, Compressing, and
Exhausting Fluids by Fluids.
I, EDMUND HUNT, of 87, St. Vincent Street, in the County of Glasgow, North
Britain, Patent Agent, do hereby declare the nature of this invention to be as
follows, that is to say :-
My said invention has for its object to obtain improved results from the action
of a fluid under pressure in propelling, compressing, or exhausting another fluid or
fluids; and it consists in causing the motor fluid to act intermittently by means of
apparatus hereinafter described.
The apparatus consists of a director and an annular rotator. The director
is a piece constructed and placed so as to communicate with two pipes leading,
one the motor fluid and the other the second fluid, to the apparatus; and is
made with a circular series of directing passages, communicating at their inlet
ends, one half of them with one pipe and the other half with the other pipe, the
two sets of passages being disposed alternately. The annular rotator is made
with curved or inclined passages, and is fitted to rotate upon or within the
central director with the inlet ends of its passages capable of communicating with
the outlet ends of the director passages. The rotator is made to rotate by the action
of the motor fluid in passing through its curved or inclined passages. As the rotator
rotates each of its passages communicates alternately with a motor-fluid passage
and a second fluid-passage of the director, and thereby becomes filled or partly filled
alternately with the motor fluid and with the second fluid. The portions of motor
fluid act as pistons in propelling the portions of the second fluid through the
rotator passages; and the second fluid is thereby exhausted from its supply pipe,
whilst if the rotator is enclosed in a suitable vessel the second fluid will be
compressed therein.
Dated this Tauntoonth day of Mar 1906
Improvements in Apparatus for Propelling, Compressing, and
Exhausting Fluids by Fluids.
I, EDMUND HUNT, formerly of 87, St. Vincent Street, now of 121, West
George Street, in the County of Glasgow, North Britain, Patent Agent, 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, that is to say:-
My said invention has for its object to obtain improved results from the action of
a fluid under pressure in propelling, compressing, or exhausting another fluid or

page_text: fluids; and it consists in causing the motor fluid to act intermittently by means of
apparatus such as is hereinafter described.
The apparatus comprises directing passages and a rotator. The directing passages
communicate with two pipes leading, one the motor fluid and the other the second
fluid, to the apparatus; and communicate at their inlet ends, one half of them with
one pipe and the other half with the other pipe, the two sets of passages being
disposed alternately. The rotator is made with curved or inclined passages, and is
fitted to rotate being arranged with the inlet ends of its passages capable of
communicating with the outlet ends of the directing passages. The rotator is made
to rotate by the action of the motor fluid in passing through its curved or inclined
passages. As the rotator rotates each of its passages communicates alternately with
a motor-fluid inlet passage and a second-fluid inlet passage and thereby becomes
filled or partly filled alternately with the motor fluid and with the second fluid.
The portions of motor fluid act as pistons in propelling the portions of the second
fluid through the rotator passages; and the second fluid is thereby exhausted from
its supply pipe, whilst if the rotator is enclosed in or the outlet from it is connected
to a suitable vessel the second fluid will be compressed therein. The passages in
which the portions of motor fluid and second fluid follow each other are preferably
of a certain length such that in each passage two successive portions of motor fluid
may have between them a portion of second fluid when the latter of the two
portions of motor fluid is entering the passage. And instead of the rotator being of
a relative size sufficient to contain the desired length of passages, it may be
comparatively small and communicate with separate passages of sufficient length
formed in the fixed part of the apparatus.
And in order that my said invention and the manner of performing the same may
be properly understood I hereunto append a sheet of explanatory drawings to be
hereinafter referred to and representing by way of example three modifications of
my improved apparatus.
Figure, 1, of the drawings is a horizontal section, and Figure, 2, is a vertical
section of a first modification, Figure, 3, being a vertical section as at right angles
to Figure, 2, of a central part of the apparatus.
Figures, 4, to 10, hereinafter particularised show a second modification and
Figures, 11, to 17, also hereinafter particularised show a third modification.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
In the modification shown in Figures, 1, to 3, a motor-fluid inlet piece, A, and a
second-fluid inlet piece, B, are fixed to opposite ends of a central piece, C, in which
last are formed directing passages, D, E, for the motor fluid and second fluid
respectively. On the central piece, C, there is fitted to rotate freely a rotator, F,
in the form of a disk made with volute-like curved passages, G. There are two
diametrically opposite directing passages, D, for the motor fluid and two, E, for
the second fluid; there may however be more than two of each set of passages,
other parts such as the rotator passages, G, being modified to correspond. The
rotator, F, is shown as made with eight passages, G, but the number of these
passages may be varied in different cases provided that a passage, G, never
communicates at the same time with a motor-fluid directing passage, D, and a
second-fluid directing passage, E. To diminish friction the rotator, F, is supported
on antifriction balls, H, and a check valve, J, is fitted in the second-fluid inlet
pipe, B.
The motor fluid entering any passage, G, of the rotator, F, makes the rotator
rotate by the action of the fluid on the curved passages; and in rotating the rotator
causes each passage, G, to alternately communicate with a motor-fluid inlet and a
second-fluid inlet.
The second modification is shown in plan in Figure, 4, and in vertical section in
Figure, 5. Figure, 6, is a plan and Figure, 7, a vertical section of a central
piece, K, having in its upper disk-like part directing passages, D, for the motor
fluid. The directing passages, E, for the second fluid are in a ring, L, shown in

page_text: plan and side elevation in Figures, 9, and 10, the parts, K, L, being made separately
for convenience in manufacture, but being held together in the apparatus. The
rotator, F, shown separately in elevation in Figure, 8, is in this modification a
tubular piece formed with helically curved passages, G, and it is enclosed in a
M, of the body of the apparatus. The upper end of the rotator, F, turns
freely on a boss formed on the underside of the central piece, K, and an adjustable
spindle, N, fixed in that piece supports the lower part of the rotator, antifriction
balls being interposed. A plug, P, is screwed into the bottom of the rotator to
retain lubricant.
In this second modification as well as in the first, the motor fluid may enter by
the inlet, B, and the second fluid by the inlet, A, a check valve (J) being of course
fitted in whichever is made the inlet for the second fluid.
The third modification is shown in plan in Figure, 11, in horizontal section in
Figure, 12, in vertical section in Figure, 13, and in inverted horizonial section in
Figure, 14. Figures, 15, 16, and 17, are a sectional plan, a sectional elevation and
an inverted plan of the rotator. In this modification the inlet, A, leads the motor
fluid tangentially (so as to impart vortex motion) into an annular space, Q; and in
that space the fluid acts on curved blades, R, and in reversely inclined passages
in an outer annular part of the rotator, F, causing it to rotate. The rotator, F, is
fixed on a central spindle the ends of which rotate in adjustable screw bearings ;
and it is made with a cylindrical part, S, separating the annular motor-fluid space, Q,
from the second-fluid inlet, B. There are twelve passages (or it may be any other
suitable number) through the annular part of the rotator, every alternate passage
communicating with the motor-fluid space, whilst the others communicate with the
second-fluid inlet space. Instead of the rotator, F, being made with long
passages (G) as in the first and second modifications parallel longitudinal
passages, U, of sufficient length are formed within the body, M, of the apparatus;
and in rotating over the upper ends of these passages the rotator causes each
passage to communicate alternately with the motor-fluid inlet and second-fluid
inlet.
The practical applications of the apparatus to which the name siren pump is
descriptively applicable are numerous. For example, it may be applied for
exhausting bulbs for incandescent electric light by means of mercury the internal
parts being in that case made of materials not injuriously acted on by the mercury.
In towns having low-pressure and high-pressure water mains, the high-pressure
water may by means of the apparatus be made to increase the force of the low-
pressure water for extinguishing fires. On farms where a moderate head of water
is available the apparatus may be used for producing air suction for milking cows.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Apparatus for propelling, compressing, and exhausting fluids by fluids, in which
the motor fluid is made to act intermittently by means of a rotator with parts in
connection with which it works, constructed and operating substantially in the
manner herein before described.
Dated this Floventh day of February 1807
EDMUND HUNT.