Improvements in Rotary Fans and the like.
Year: 1895

page_text: Date of Application, 9th Feb., 1895
Complete Specification Loft 8th Nov 1805 Accented 14th Dec.
1895
PROVISIONAL SPECIFICATION.
Improvements in Rotary Fans and the like.
I, JOHN JONES, Builder of 40 Sydney Street, Chelsea, in the County of
Middlesex, do hereby declare the nature of this invention to be as follows:-
--
This invention relates to rotary fans and the like and may be carried out as
follows:-
A disc is secured upon the shaft and upon this disc are placed, preferably in
pairs and on opposite sides, vanes or scoops, preferably radiating from the centre
of the disc, each vane projecting at first more or less perpendicularly from the
face of the disc and then being curved over until it terminates in a plane
substantially parallel with the disc. Although the vane where it joins the disc is
as stated preferably radial I prefer to make its outer edge tangential so that the
peripheral limit of the vane would be deeper than the one near the centre of the
disc; either or both ends of the vane may be curved as required. The fan is
intended to rotate in a case centrally open for the entrance of the air or other fluid
to be operated upon and to deliver the said fluid through one or more peripheral
openings. Instead of being straight the vanes may be curved.
Dated this 9th day of February 1895.
BOULT & WADE,
Agents for the Applicant.
1, JOHN JONES, Builder, of 40 Sydney Street, Chelsea, in the County of
Middlesex, do hereby declare the nature of the said 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 relates to rotary fans and the like and may be carried out as
hereinafter described with reference to the accompanying drawings in which ;-
Figs. 1 and 2 are elevations as viewed from points respectively at right angles
to each other, with the casing in section.
Like letters indicate like parts throughout the drawings.
A disc A is secured upon the shaft B and upon this disc are placed, preferably in
pairs and on opposite sides, vanes or scoops C, preferably radiating as at C' from the
centre of the disc A, each vane projecting at first more or less perpendicularly from
the face of the disc as at C2 Fig. 2, and then being curved or bent over to form a
lip as at C3 Fig. 2, until it terminates in a plane substantially parallel with the
disc. Although the vane C at C', i.e., where it joins the disc is as stated preferably
radial I prefer to make its outer edge C 4 tangential to a circle concentric with,
but, in the present example, of slightly larger diameter than, the shaft B, so that
the peripheral limit of the vane would be deeper than the one near the centre of
the disc; either or both ends of the vane may be curved as required. The fan is
intended to rotate in a case D centrally open as at D' for the entrance of the air
or other fluid to be operated upon and to deliver the said fluid through one or more

page_text: peripheral openings D 2. Instead of being straight in their radial or approximately
radial direction the vanes C may be curved.
The lips C3 which, instead of being curved as shown in the drawing may be
flat and substantially parallel with the disc serve to prevent the air from escaping
past or over the side edges of the operative or air impelling faces of the vanes.
In the drawings the vanes C are shown as secured by flanges C 5 to the disc A
but other means may be employed for the purpose.
Having now particularly described and ascertained the nature of the said inven
tion, and in what manner the same is to be performed, I declare that what I
claim is;-
1. A vane for a rotary fan or the like having a lip such as C3.
2. In a rotary fan or the like a vane of substantially the shape described.
3. In a rotary fan or the like the combination with a revolvable disc of a vane
of substantially the shape described secured to each side thereof.
4. The combination and arrangement of parts constituting the complete rotary
fan substantially as described and illustrated in the accompanying drawings.
Dated this 7th day of Nazambou 1905
JOHN JONES.
Boult & Wade,
Agents for the Applicant.
JOHN JONES.
Boult & Wade,
Agents for the Applicant.