Improvements in Apparatus for Forcing, Exhausting, or Pumping Air, Gases, Liquids, and the like.
Year: 1889

page_text: Date of Application, 5th Feb., 1889
Specification Accepted, 16th Mar., 1889
Improvements in Apparatus for Forcing, Exhausting, or Pumping
Air, Gases, Liquids, and the like.
1 WILLIAM SAYER of 144 Uttoxeter Road Derby in the county of Derby, 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:-
My invention relates to the construction of apparatus for forcing exhausting or
pumping air, gases, liquids and the like and for illustration thereof reference may be
made to the accompanying sheet of drawings and to the letters of reference marked
thereon.
Figure 1 is an elevation and
Figures 2 and 3 are sections of my apparatus.
A is a fixed casing fitted with a blast or delivery outlet B and having openings C. C
in the centre or otherwise for admission of air, gas, or liquid and I may admit such
air, gas or liquid at one or both sides as desired.
A driving shaft 1) runs in bearings E, E, and carries two or more webs or
shrouds F. F these webs or shrouds carry curved blades in suitable number and of
peculiar construction, the long leg G of the blade may bear closely against the inner
periphery of the casing A but the short leg H of each blade is joined to the long leg
or blade G as shewn at or near the inlet openings C. C. The curve or shape of the
longer blades is varied or adapted to the purpose required but I do not confine myself
to the exact arrangement shewn.
The blades H may be curved to a less radius than that of the longer ones G. and
they may also have if desired a reverse curve at or near the inlet or inlets C. C¹ the
length of these blades may be about balf that of the longer blades but I do not confine
myself to that proportion.
any
The blades G. H. are fitted in the webs or shrouds F. F¹ in
suitable manner,
one on each side where two are used, from the inlet or inlets for air, gas or liquid to
the periphery of the longest blades G, these webs or shrouds revolve with the blades
inside the fixed casing A or they may be fixed on the driving-shaft D without the

page_text: webs or shrouds and revolve close to the sides of the easing either method being
adopted as may be found desirable for the purposes for which the apparatus is
required to be used.
By my invention I obtain a construction of compound fan or centrifugal pump the
shorter blades or plates of which regulate the amount of air gas or liquid admitted
to the longer blades or plates G for delivery into the casing A, the action being that
of a fan or pump of small diameter delivering air gas or liquid or the like against a
gradually increasing pressure into a fan or pump of larger diameter.
Having now particularly described and ascertained the naturo of my said inven-
tion and in what manner the samo is to be performed I declare that what I
claim is.
1st. Constructing fans or pumps for blowing forcing exhausting or pumping
purposes with radial blades running near or against the periphery of the casing in
which they work said blades or plates having shorter blades or plates joined thereto
the said blades or plates being fixed to webs or shrouds or mounted directly upon a
revolving shaft as and for the purposes described.
2nd. The improved arrangement of fan or pump substantially as described and for
the purposes set forth, and as illustrated in the accompanying drawings or any mero
modification thereof.
POPPLEWELL, COLTON & Co.,
Agents for the Applicant.