Improvements in Air Propellers or Fans.
Year: 1894

page_text: Date of Application, 17th Jan., 1894
Complete Specification Left, 15th Oct., 1894-Accepted, 17th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in Air Propellers or Fans.
I, JOSEPH WADDINGTON of the Firm of Messrs. J. Waddington and Company
of Clay Bank Works, Fletcher Street, Bury in the County of Lancaster,
Ventilating Engineers, do hereby declare the nature of this invention, to be as
follows:-
This invention consists in the method of attaching or securing the blades or
vanes of air propellers or fans, to the bosses of same, and in the construction or
section of such blades or vanes.
Upon the bosses of air propellers or fans I construct a suitable flanged disc,
having any suitable number of Hat surfaces upon its outer periphery, according to
the number of blades or vanes required to be used or attached, also cast or formed
at an angle upon these flat surfaces, is a wing or projection, to which is secured (by
bolts, rivets or other means) the blade or vane of the air propeller which is
preferably of a flat or other suitable section, tapering from its outer edge to the
boss, a stud or support attached to the top outer corner of one vane and the bottom
outer corner of the other next adjoining (such vanes slightly overlapping each
other) acts as a support or guide for holding the said vanes preferably in a fixed
position.
Air holes may be cast or formed in the said disc so as to minimize the power
required as much as possible.
The said air propeller may be mounted in a suitable frame and fixed and driven
in any suitable manner.
Dated thie Sintoanth dow of T1001
JOHN E. WALSH,
Crossley Street, Halifax, Patent Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Air Propellers or Fans.
I, JOSEPH WADDINGTON of the Firm of Messrs. J. Waddington and Company
of Clay Bank Works, Fletcher Street, Bury in the County of Lancaster,
Ventilating Engineers, 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 :-
This invention consists in the method of attaching or securing the blades or
vanes of air propellers or fans to the bosses of same, and in the construction or
section of such blades or vanes.

page_text: Upon the bosses of air propellers or fans I construct a suitable flanged disc C,
having any suitable number of flat surfaces D upon its outer periphery, according
to the number of blades or vanes E required to be used or attached, also cast or
formed upon these flat surfaces is a wing or projection F, passing preferably
diagonally across the said flat surface, to which is secured (by bolts, rivets G or
other means) the blade or vane E.
The blades are preferably of a flat section, tapering from their outer edges to the
boss, and may have strengthening pieces J attached to their outer edges also such
vanes may be perforated if desired.
A stud, support or stay G', attached to the top outer corner of one vane, and the
bottom outer corner of the other next adjoining (such vanes slightly overlapping
each other) acts as a support or guide for holding the said vanes preferably in a
fixed position.
Air holes H may be cast or formed in the said disc or boss for the free out-rush
of air, thereby greatly minimizing the power required for driving same as much as
possible.
The said air propeller may be mounted in a suitable frame K upon suitable
journals L, and may be composed of cast iron, wood, composition or metal, fixed
and driven in any suitable manner, the centre of the said journals L are ball shaped
and hollow, such hollow M acting as a well or oil receptacle for the lubricant.
The fan or propeller is secured in any suitable position by means of bolts passing
through brackets Nattached to the framework, and the cylindrical chamber P (for
conducting the air, dust or steam through the wall or roof) has suitable hinged or
pivotted doors R, which when closed keep out the cold air or draught, when the
propeller is not being used.
By this construction and section of uncurred or flat vane and the method of
securing the same to the boss, the propeller may be employed either as a ventilator
or as an exhaust, by reversing the driving of the propellor it either draws in or
expels the air as required.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The construction of air propellers with flat blades or vanes, and the means of
securing the same to the boss, so that by reversing such propellers, they draw in or
exhaust the air as required, substantially as shown and described.
2. In air propellers or exhausts the use and employment of a flanged disc or
boss C, having flat surfaces D upon its periphery, wings F, blades or vanes E
(with or without perforations and strengthening pieces J) stays G', attached and
operating in the manner, substantially as shown and described.
3. In air propellers or exhausts, the use and employment of flanged disc or
boss C, in which are air holes H, such disc or boss having flat surfaces D upon
its periphery, blades or vanes E, stay plates G', substantially as shown and
described.
Dated this Twenty-fifth der of Santambor 1901
JOHN E. WALSH,
Crossley Street, Halifax, Patent Agent for the Applicant.