Improvements in Pumps, Blowers, and Analogously Constructed Apparatus.
Year: 1893

page_text: Date of Application, 30th Jan., 1893
Complete Specification Left, 30th Oct., 1893—Accepted, 27th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Pumps, Blowers, and Analogously Constructed
Apparatus.
I, PHILIP FRANCIS ODDIE, of 9 Mansel Road, Wimbledon, in the County of
Surrey, Engineer do hereby declaro the nature of this invention to be as
follows:-
In my formor Specification left in connection with Lotters Patent dated August 5,
1890 No. 12259 a pump is described, the internal arrangements consisting of a disc
mounted eccentrically within a cylinder casing, having 3 or moro arms, to the end
of which are attached or hinged, curved blades or bridge pieces, the outer ends of
which engage in shoes, these shoes being cast to segment plates which revolve
between a pin and ring, situated in the centre of the cover of the casing.
The object of these segments was to convey the alternate inward and outward
thrust due to the pressure of the fluid acting alternately on the convex and concave
sides of the curved blades at different stages of the revolution.
In the prosent invention I make use of sliding parts or "shoes" of a particular
form designed to counteract the alternate inward and outward thrust, due to the
pressure on the curved arms which connect or hinge them to multiple armed axes
(say 4 arms). That is to say, I bevel the shoes or slides outward towards the
periphery in the direction of rotation so as to give an area approximately equal to
the area exposed to pressure on the curved blades.
The resultant of all the forces coming into play, being a slight outward tendency
throughout the whole revolution, thus doing away with the necessity of carrying
the segment plates to the centre, as described in said former Specification..
In order to guide the shoes in their proper course I cast on each end of them
a narrow segmental piece which revolvo in a recess formed in a double loose ring
which revolves in a concentric recess, formed in both ends of the pump casing.
I prefer to form the curved blades or bridge pieces of an S section, and in order
to cheapen production and facilitate renewals I form the extremities of the multiple
arms of the axes or disc and also of each shoe of a suitable shape to receive a
bearing formed of white metal on which the ends of the curved blades engage or
are hinged.
Dated the 30th day of January 1803
COMPLETE SPECIFICATION.
Improvements in Pumps, Blowers, and Analogously Constructed
Apparatus.
I PHILIP FRANCIS ODDIE of 9 Mansol Road, Wimbledon, in the County of
Surrey, 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 :—
In my former Specification left in connection with Letters Patent dated August 5,
1890 No. 12259 a pump is described, the internal arrangements consisting of a disc
mounted eccentrically within a cylinder casing, having three or more arms, to the

page_text: of the axes.
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 :-
1. The combination or arrangement and use of the shoes with sliding segments
grooved ring, curved blades and axial arms, co-operating together in a rotary engine
pump or meter, substantially as and for the purpose set forth.
2. A rotary engine having its parts constructed and arranged as herein described
and shewn by the drawings.
Dated the 30th day of October 1893.
30th day of October 1883.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.