Improvements in Rotary Ventilators or Ventilating Shaft Tops.
Year: 1892

page_text: Date of Application, 29th Aug., 1892
Complete Specification Left, 5th Jan., 1893-Accepted, 18th Feb., 1893
. PROVISIONAL SPECIFICATION.
Improvements in Rotary Ventilators or Ventilating Shaft Tops.
I GEORGE COOPER of the Electric Works The Wicker Sheffield in the County
of York Coppersmith do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in apparatus for ventilating public and
private buildings. It consists of a round tube at the top of which is a revolving
drum or cylinder, secured to a central perpendicular spindle. In the interior of
the drum, and attached to it are one two or more rotary suction fans, each fan
consists of a number of louvres, which extend at right angles from the central
spindle to the circumference of the drum and which are placed at an angle of
thirty degrees or thereabouts.
"
On the outside of the drum are attached a number of vanes so placed that the
wind will cause the drum to revolve. Above the revolving drum is a cover or rain-
guard, which is stationary.
Dated this 21th dox of August 1892
D
H. F. BOUGHTON, M.I. Mech. E.,
16, Commercial Street, Sheffield, Agent.:
COMPLETE SPECIFICATION.
Improvements in Rotary Ventilators or Ventilating Shaft Tops.
I GEORGE COOPER of Electric Works The Wicker Sheffield in the County of
York Coppersmith, Tinner, Brazier etc., 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 present invention relates to improvements in apparatus for ventilating
buildings railway carriages cabins ships hold and other spaces its object being to
so arrange a ventilator that the wind or natural currents of air will revolve one or
more fans in such a way as to facilitate the movement of air to be discharged from
said space, to attain which I construct my apparatus as illustrated in the accom-
panying drawings which are to be taken as being typical of my improved ventilator.
Fig. 1 is an elevation Fig. 2 a sectional elevation partly in perspective and
Fig. 3 a cross sectional plan taken on line a a of Fig. 1 and Fig. 4 à cross sectional
plan taken on line b b of Fig. 2 of my improved ventilator.
Similar letters of reference denote, corresponding parts in each view. Upon a
circular tube or shaft C I arrange a drum or cylinder D which is secured by means
of the fan E to a vertical spindle F. The said spindle F runs in a steel step f';
in the form of a pivot at its lower end, and the step is carried upon two vertical
cross stays g, which are secured to the circular shaft or tube C. The step f' is
surrounded by an oil cup h, which extends somewhat up the spindle F and is filled
with oil from the supply pipe conducted to the outside of the shaft C.
The fan E is secured to the shaft F and also to the flange d' of the drum D by
rivets or other suitable means, by which means the drum D and the two fans É
and E' are carried upon the shaft F. The fan E' rests or is secured to the upper
part of the drum D, and an opening e' is formed in its centre so as to clear an oil
vessel K which is attached to the shaft F at its bottom which is closed and is open
at the top.
This oil vessel K receives the lower part of a supply pipe which extends to a

page_text: hollow ball c, screwed to the top of ventilator, and conducted to the outside thereof
so as to enable oil to be easily fed to the vessel K.
Within the lower part of the tube I fix a perforated metal brass or bearing
within which the upper part of the shaft or spindle F revolves.
By the before described arrangement of lubricating and mounting the drum D;
a very little pressure of air on the vanes of the drum D, hereinafter to be described
will revolve the said drum D, and fans E and E', and as the vessels h and K hold
a considerable amount of oil the ventilator will work without attention for years.
The fans E and E', have flat rims e', and are arranged with blades or wings formed
at suitable angles so as to lift the air to be removed from any space below the
stays g. The stays g act as conductors to the air currents being drawn up by the
fans E and E'.
The upper part co of my improved ventilator situated above the fan E' is suitably
perforated, and has louvres e for diffusing the air after being discharged by the
said fan E', and facilitating its exit. On the outside periphery of the drum D are
arranged a number of vanes so fixed and formed that the ordinary wind or
natural air currents impinging against the same cause the drum D to revolve and
with it the fans E and E', thus drawing the air up through the shaft C.
The upper part e, which acts as a rain guard, is secured to the part C by means
of brackets or stays c'. I would have it understood that do not limit myself to
the number of fans employed neither to their special shape although I prefer to
have two fans constructed as illustrated and situated some little distance apart.
Having now particularly described and ascertained the nature of my said
invention and in what mauner the same is to be performed I declare that what I
claim is
1. In rotary ventilators or ventilating shaft tops the combination of a circular
shaft or tube C with one or more fans E fitted to a drum D; the said drum D
having vanes d', on its outer periphery whereby it is easily rotated by the wind or
natural air currents substantially as described and illustrated.
2. In rotary ventilators or ventilating shaft tops the combination with a circular
shaft C of one or more fans E and E' mounted on a spindle F and lubricated in. a
manner described and illustrated.
3. In a rotary ventilator or ventilating shaft tops such as described the use of
cross plates or stays y for conducting the air in a straight line to the fans
substantially as described.
Dated this 15th day of December 1892.
H. F. BOUGHTON, M.I. Mech. E.,
Commercial Street, Sheffield, Agent.