Improvements in Air Propellers or Fans.
Year: 1892

page_text: Date of Application, 27th Dec., 1892
Complete Specification Left, 27th Sept., 1893-Accepted, 27th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Air Propellers or Fans.
I, CHARLES MYERS, of Phillips Park Road, Beswick, Manchester, in the
County of Lancaster, Designer, do hereby declare the nature of this invention to
be as follows :-
The object of this invention is to provide apparatus capable of propelling large
volumes of air with greater efficiency and economy than heretofore.
It consists essentially in the application to an air propeller or fan of spiral or
twisted blades in the form of severed loops helically disposed relatively to the
opening in the centre and angularly arranged relatively to the boss to which both
ends are connected.
In carrying out the invention I construct the blade preferably of sheet metal
or it may be cast in the form of a loop leaving an opening between the ends. The
ends of the loop are both attached to the boss one in advance of the other
and at an angle thereto so that a helical opening is left between them.
The blades are attached by being riveted, screwed, bolted, clamped, or otherwise
secured.
If desired the blades may be cut or formed of two or more pieces connected
together to form a single looped blade of the desired shape. The hole in the centre
of the loop is made small and the surrounding surface broad to present a large
surface to the air.
Dated this 24th day of December 1892.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Air Propellers or Fans.
1, CHARLES MYERS, of Phillips Park Road, Beswick, Manchester, in the
County of Lancaster, Designer, 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 :-
The object of this invention is to provide apparatus capable of propelling large
volumes of air gases and other vapours with greater efficiency and economy than
heretofore.
It consists essentially in constructing the air propeller or fan with spiral or
twisted blades in the form of severed loops the ends of which are helically disposed
relatively to the opening in the centre and to each other and angularly arranged
relative to the boss to which both ends are attached one end being set on the boss
in advance of the other.
The invention will be fully described with reference to the accompanying
drawings.
'
Fig. 1. Front elevation.
Fig. 2. Side elevation.
The blade A is constructed in the form of a severed loop as shown preferably of
sheet iron or steel with both ends a of the loop which forms the blade attached to
the boss B one end in advance of the other and at an angle to the axis of the boss

page_text: so that a helical opening is left between them. It is evident that it may be made
of cast iron, aluminium, or other metal.
In constructing the apparatus I at present prefer to cast the boss with a number
of angular lugs & set at any desired pitch. These lugs may be set one directly
behind the other as shown or one may be a little to the right or left of the other
but all set at the same pitch. The Blades A are cut out in one, two or more pieces
of sheet iron, steel or other metal preferably in two pieces. The ends of the
loop a are riveted screwed or bolted to the lugs and the other ends riveted
together at a¹.
If desired each blade A. may be cast in the form of a loop and attached to the
boss B by being bolted to the lugs b or the blades may be cast with the boss B but
I at present prefer to make them of sheet metal to render them lighter.
The central hole C which forms the loop is preferably made small and the
surrounding surface broad to present a large surface to the air.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. A fan or apparatus for forcing or propelling air gas or vapour constructed
with spiral or twisted blades in the form of severed loops, the cuds of which are
helically disposed relatively to the central opening and angularly arranged
relatively to the boss to which both ends are attached one being set on the boss in
advance of the other substantially as described.
2. In an apparatus or fan for forcing or propelling air the arrangement and
combination of the several parts substantially as described and shewn.
Dated this 26th day of September 1893.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.