An Improved Centrifugal Machine, adapted for Use as a Pump, Blower, or Exhauster.
Year: 1893

page_text: Date of Application, 27th May, 1893
Complete Specification Left, 27th Feb., 1894-Accepted, 27th June, 1894
PROVISIONAL SPECIFICATION.
An Improved Centrifugal Machine, adapted for Use as a Pump,
Blower, or Exhauster.
We, JOSEPH ARMYTAGE WADE, Timber Merchant, and JOHN CHERRY,
Mechanical Engineer, both of Hornsea, in the East Riding of the County of York,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved centrifugal machine principally intended
for pumping water or other liquid, but adapted for employment as a blower or
exhauster; our object being to produce a machine which whilst being simple in
construction is in relation to its size capable of dealing with exceptionally large
volumes of fluid, the instrument being thus peculiarly suited for use on board ship
and in other confined situations.
In carrying out our invention, we employ a hollow foliated wheel mounted on a
shaft which rotates in an enclosing casing. This wheel is preferably made with
four narrow quadrant-shaped compartments extending from the boss to the
periphery; though any other convenient number of compartments may be used.
Each compartment is open at one end and at the periphery of the wheel, but is
closed at the other end and where it joins the boss of the wheel. The closed end
of each compartment preferably extends within the open end of the next compart-
ment. The edges of the open end of each compartment are comparatively sharp
and may be straight, while the closed end should be curved in order to enable the
fluid to more readily escape. The inlet passage in the casing is divided into
two branches and communicates with a chamber on each side of the wheel. The
compartments of the wheel communicate with and may project into a channel
or space surrounding the wheel circumferentially and leading to the outlet
passage.
As the wheel rotates, water or other liquid or air flows under the influence of
centrifugal force from the narrow compartments of the wheel into the circumferential
channel or space and thence to the outlet passage, water or air to take its place
flowing, under atmospheric pressure, from the inlet passage into the wheel by way
of the spaces left between the open ends and the closed ends of the compartments,
and being in turn brought under the influence of centrifugal force, finally escaping
from the outlet passage.
Dated the 27th day of May 1893.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.
CONT LEIDDI DUIFICATION.
5 An Improved Centrifugal Machine, adapted for Use as a Pump,
Blower, or Exhauster.
We, JOSEPH ARMYTAGE WADE, Timber Merchant, and JOHN CHERRY,
Mechanical Engineer, both of Hornsea, in the East Riding of the County of
York, do hereby declare the nature of this invention and in what manner the same
0 is to be performed to be particularly described and ascertained in and by the
following statement :-
This invention relates to an improved centrifugal machine principally intended
for pumping water or other liquid, or mixture of liquid and solid matter, but

page_text: adapted for employment as a blower or exhauster; our object being to produce
a machine which whilst being simple in construction is in relation to its size
capable of dealing with exceptionally large volumes of fluid, the instrument being
thus peculiarly suited for use on board ships and in other confined situations.
In the accompanying drawings,
Fig. 1 shows, partly in vertical transverse section on the line y, y of Fig. 2 and
partly in end elevation, a machine constructed in accordance with our invention.
Fig. 2 is a longitudinal section on the line x, x of Fig. 1; the hollow foliated
wheel being, however, represented in side elevation.
Fig. 3 is a plan of the lower half of the casing.
In carrying out our invention, we employ a hollow foliated wheel A A' mounted
on a shaft B which rotates in an enclosing casing C C'. This wheel is shewn as
being made with six narrow quadrant-shaped compartments a, a', a³, a³, etc. (Fig 1)
extending from the boss A' to the periphery; though any other convenient number
of compartments may be used. Each compartment is open at one end and at the
periphery of the wheel, but is closed at the other end and where it joins the
boss A¹. The closed end of each compartment preferably extends within the open
end of the next compartment, as clearly illustrated in the drawings. The edges a*
of the open end of each compartment are comparatively sharp and may be straight,
while the closed end should be curved as indicated in dotted lines in Fig. 2 in
order to enable the fluid or mixture of liquid and solid matter to be more easily
impelled and to more readily escape. The inlet passage C in the casing is divided
into two branches C, and communicates with a chamber C on each side of the
wheel. The compartments of the wheel communicate with and project into a
channel or space C surrounding the wheel circumferentially and leading to the
outlet passage C. C' is a hole which may be utilized for the reception of the
eye-bolt or for charging the pump or for permitting the escape of air. Air may
also escape by way of the small passage c to the delivery branch.
As the wheel rotates, water or other liquid or mixture of liquid and solid matter
or air flows under the influence of centrifugal force from the narrow compart-
ments a, a, a, a, etc. of the wheel into the circumferential chamber or space C
and thence to the outlet passage Co, water or other liquid or mixture of liquid
and solid matter or air to take its place flowing, under atmospheric pressure, from
the inlet passage C into the wheel by way of the spaces left between the open
ends and the closed ends of the compartments a, a, a, a³, etc., the result being
that a continuous stream escapes from the outlet passage Co.
If preferred, the inlet passage C³, instead of being divided into branches C³, may
be on one side only of the casing.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we claim :-
1. The improved centrifugal machine constructed substantially as described with
reference to the accompanying drawings and adapted for use as a pump, blower
or exhauster.
2. In a pump, blower or exhauster, the employment of a foliated wheel formed
and operating substantially as herein described.
3. In a pump, blower or exhauster, the combination, with the foliated
wheel A A', of the casing C C containing an inlet passage C³ communicating by
means of branches C' with chamber C and a circumferential channel or space C
leading to the outlet C, substantially as herein set forth.
Dated the 27th day of February 1894.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.