Improvements in Fans for Exhausting and Blowing.
Year: 1890

page_text: Date of Application, 28th Nov., 1890
Complete Specification Left, 4th Aug., 1891-Accepted, 12th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in Fans for Exhausting and Blowing.
We, WILLIAM HOPTON, of 32 Boundary Road, St. Helens, in the County of
Lancaster, Mining Engineer, and ABEL HEYWOOD, Junior, of 56 and 58 Oldham
Street, Manchester, in the said County, Publisher, do hereby declare the nature of
this invention to be as follows:-
:-
Our invention relates to improvements in the construction of fans for exhausting
and blowing.
In carrying our invention into effect we construct a circular cage or other
suitably shaped frame upon which are secured any convenient number of vanes
blades or scoops which are set approximately tangentially to the perimeter and are
preferably slightly curved inward toward the axis of the fan the vanes thus form a
series of passages from the outside to the interior of the fan. The air or other
fluid to be drawn through the fan is supplied to the interior of the latter through
one or both ends which is or are made open for the purpose. The fan is or may be
enclosed in a chamber and is driven by a belt and pulley or gearing or by any
convenient means.
When in motion the action of the revolving vanes draws air continuously through
the end or ends of the fan and discharges it at the perimeter so that when the fan is
enclosed in a chamber the air is forced through the passage or passages leading
therefrom in any direction and to any point required.
Dated this 27th day of November 1890.
H. B. BARLOW.
COMPLETE SPECIFICATION.
Improvements in Fans for Exhausting and Blowing.
We, WILLIAM HOPTON, of 32 Boundary Road, St. Helens, in the County of
Lancaster, Mining Engineer, and ABEL HEYWOOD, Junior, of 56 and 58 Oldham
Street, Manchester, in the said County, Publisher, 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 :-
Our invention relates to improvements in the construction of fans for exhausting
and blowing.
In carrying our invention into effect we construct a circular cage or other
suitably shaped frame upon which are secured any convenient number of vanes
blades or scoops which are set approximately tangentially to the perimeter and are
preferably slightly curved inward toward the axis of the fan the vanes thus form a
series of passages from the outside to the interior of the fan. The air or other
fluid to be drawn through the fan is supplied to the interior of the latter through
one or both ends which is or are made open for the purpose. The fan is or may be
enclosed in a chamber and is driven by a belt and pulley or gearing or by any
convenient means.
And in order that our invention may be fully understood and readily carried into
effect we will describe the accompanying three sheets of drawings reference being
had to the figures and letters marked thereon.
Figure, is a perspective view of a fan made according to our improvements.
Figure 2 is a longitudinal and Fig. 3 a transverse vertical section of a similar fan
fitted in a chamber.

page_text: In these views a designates the shaft which is supported in hearings and may
be driven by a strap and pulleys or other convenient means. On the shaft a are
keyed or otherwise secured a number of wheels or bosses each of which has a
series of sockets or openings into which are fitted and secured a corresponding
number of arms c radiating from the shaft a. These radial arms c are connected
together by cross stays g to which are secured the vanes blades or scoops d which
are curved as shown best in Fig. 3 and form a series of air passages e leading from
the central portion of the fan to the exterior. Air enters the central portion of the
fan through both ends at or it may be at one end only and as the fan revolves in
the direction indicated by the large arrow Fig. 3 the action of the curved vanes
blades or scoops d forces the air outward in the direction indicated by the small
arrows Fig. 3, and discharges it at the perimeter, so that when the fan is enclosed
in a chamber as shown in Figs. 2 and 3 the air drawn through both the ends for
one end as the case may be is forced through the passage or passages leading from
the chamber in any direction and to any point required.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
In a fan for exhausting or blowing the construction arrangement and combination
of the parts forming the air passages e through which the air drawn by the action
of the revolving vanes into the central portion through the ends or one end of the
fan is discharged at the perimeter substantially as herein described with reference
to the drawings annexed.
Dated this 21st dor of Tuly 1901
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicants.