An Improved Apparatus for Forcing or Drawing Fluids or Liquids.
Year: 1894

page_text: Date of Application, 17th May, 1894
Complete Specification Left, 18th Feb., 1895-Accepted, 23rd Mar., 1895
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Forcing or Drawing Fluids or Liquids.
1, GEORGE HENRY FISH, of 23 Oldham Road, Miles Platting, Manchester,
Engineer do hereby declare the nature of this invention to be as follows:-
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My invention relates to that type of pump or blower generally denominated as
rotary," and in its simplest form may consist of a suitable chamber preferably
with flat sides and semicircular ends, containing two parallel shafts carrying vanes.
The chamber is provided with inlet and outlet branches on opposite sides, in the
usual way. The two shafts or axles are geared together so as to revolve at equal
speeds, but in opposite directions, and the said shafts have their axis on the centre
of the semicircle forming the ends of the chamber. On these shafts I mount a
drum, preferably carrying six vanes or blades, said vanes running longitudinally, or
in the direction of the axis of the shafts. The tips of these vanes are made a suitable
fit in the semicircular part of the chamber, and the ends of the vanes fit the sides
of the chamber. The vanes may be provided with any suitable form of packing
to make the fit more perfect. The bosses of the drums are preferably made
concave between the vanes, and of such form that the tip of a vane on one drum
will suitably work in the concave portion of the other drum, when the drums are
revolving. The action of the apparatus will be such that when the drums are set
in motion the liquid or fluid will be carried round the semicircular ends of the
chamber, between the vanes, and so driven out at the delivery branch, at the same time
there will be a flow induced into the chamber at the suction branch. The separation
between the delivery and suction sides of the chamber will be maintained by the tips
of the vanes sliding in the concave parts of the bosses, alternately. The contour of
the vanes may be made to suit the purposes intended, and I do not bind myself to any
particular form. The shafts may work in suitable stuffing boxes in the sides of the
chamber, when necessary.
Dated this Eleventh day of May 1894
G. T. HARRAP,
Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Apparatus for Forcing or Drawing Fluids or Liquids.
I GEORGE HENRY FISH of 23 Oldham Road Miles Platting Manchester,
Engineer do hereby declare the nature of my invention for AN IMPROVED
APPARATUS FOR FORCING OR DRAWING LIQUIDS OR FLUIDS and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
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My invention relates to that type of pump or blower generally denominated as
rotary," and that it may be readily understood I have caused to be attached
hereto a sheet of drawings in which Fig. 1 is a plan, Fig. 2 is a side elevation and
Fig. 3 a cross section of a typical form of the apparatus.
The blower or pump will consist of suitable chamber with a casing A, having
covers B, forming flat sides, and with semicircular ends as shown in Fig. 3. The
Do31

page_text: casing A will contain two parallel shafts C, carrying drums with vanes D. The
casing is also provided with an inlet branch or opening as at E, and an outlet
branch as at F, on opposite sides in the usual way.
The two shafts or axles C are geared together by the wheels G, so as to revolve
at equal speeds, but in opposite directions, and the shafts C have their axes on the
centre of the semicircle forming the ends of the chamber. On the shafts C,
I mount a drum, preferably carrying (or formed with) six vanes or blades D, said
vanes running longitudinally, or in the direction of the axes of the shafts. The
tips of these vanes D are made a suitable fit in the semicircular part of the
chamber, and the ends of the vanes fit the sides of the chamber B. The vanes
may be provided with any suitable form of packing to make the fit more perfect.
The bosses of the drums are preferably made concave between the vanes (as
at H) and of such form that the top of a vane on one drum will suitably work in
the concave portion of the other drum, when the drums are revolving.
The action of the apparatus will be such that when the drums are set in motion
the liquid or fluid will be carried from the inlet side E, round the semicircular ends
of the chamber, between the vanes, and so driven out at the delivery branch F,
at the same time there will be a flow induced into the chamber at the suction
branch E.
The separation between the delivery and suction sides of the chamber will be
maintained by the tips of the vanes D sliding in the concave parts H of the bosses,
alternately.
The contour of the vanes may be made to suit the purposes intended and I do not
bind myself to any particular form.
The shafts may work in suitable stuffing boxes I on the sides B of the chamber,
when necessary.
Having now particularly described and ascertained the nature of my said
invention, and what manner the same is to be performed, I declare that what I
claim is :-
In an apparatus for forcing or drawing liquids or fluids, two drums parallel with
each other and vanes D and concave parts H, substantially as herein described.
Dated this 18th day of February 1895.
G. T. HARRAP,
Agent for Applicant.