Improvements in the Construction of Ventilators.
Year: 1894

page_text: Date of Application, 4th May, 1894
Complete Specification Left, 4th Mir., 1895-Accepted, 13th Apr., 1895
Improvements in the Construction of Ventilators.
1, JULIEN BOUHON, of 2 Rue des Fortifications, Antwerp, in the Kingdom
of Belgium, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to that class of ventilators in which a passing current of
wind or air is caused to act by suction upon the air in the space to be ventilated so
as to exhaust the said air.
The improved ventilator comprises a fixed cylinder and a rotary cone; the latter
is at its apex truncated and in it is inserted a smaller cone bearing an inverted
position with regard to the former and prolonged at its inner part to form a nozzle
directed towards the open base of the outer cone. This nozzle is surrounded by a
sleeve which may be cylindrical and have a flared end towards the base of the outer
cone, while it projects at this end beyond the aforesaid nozzle and is closed at the
other end. With this sleeve there communicates laterally a tube which forms also
a rotary pivot for the sleeve and cones, aud in the usual position of erection of the
ventilator, is vertical and central within the cylinder of the ventilator.
This tube is supported by suitable step and collar bearings and the air to be
drawn out enters the tube through orifices in its lower end when air currents enter
the smaller cone and issue from the nozzle causing a partial vacuum behind and
exterior of the nozzle in the sleeve which surrounds it.
In front of the flaring mouth of the sleeve there may also be a spreading cone.
The smaller cone is always presented to the wind by the action of the latter on
the larger cone and on a vane thereon.
Dated this 4th day of May 1894
R. HADDAN,
Agent to Applicant.
improvements in the Construction O
I, JULIEN BOUHON, of 2, Rue des Fortifications, Antwerp, in the Kingdom
of Belgium, Engineer 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 relates to that class of ventilators in which a passing current of
wind or air is caused to act by suction upon the air in the space to be ventilated so
as to exhaust the said air.
The improved ventilator comprises a fixed cylinder and a rotary cone; the latter
is at its apex truncated and in it is inserted a smaller cone bearing an inverted
position with regard to the former and prolonged at its inner part to form a nozzle
directed towards the open base of the outer cone. This nozzle is surrounded by a
sleeve which may be cylindrical and have a flared end towards the base of the outer
cone, while it projects at this end beyond the aforesaid nozzle and is closed at the
other end. With this sleeve there communicates laterally a tube which also forms

page_text: a rotary pivot for the sleeve and cones, and in the usual position of erection of the
ventilator, is vertical and central within the cylinder of the ventilator.
This tube is supported by suitable step and collar bearings and the air to be
drawn out enters the tube through orifices in its lower end when air currents enter
the smaller cone and issue from the nozzle causing a partial vacuum behind and
exterior of the nozzle in the sleeve which surrounds it.
In front of the flaring mouth of the sleeve there may also be a spreading cone.
The smaller cone is always presented to the wind by the action of the latter on
the larger cone and on a vane thereon.
In order that my invention may be fully understood I will more particularly
describe it making reference to the accompanying drawing in which :-
Figure 1 is a view in elevation of my improved ventilator, and Figure 2 is a
similar view in section.
In both views similar parts are denoted by like letters of reference.
Referring to the drawing A designates the fixed cylinder closed at its top end.
B designates the rotary cone having its apex truncated as shown. C designates the
smaller cone inserted in the apex of the cone B in an inverted position and having
its inner part prolonged to form a nozzle c directed towards the open base 6 of the
cone B. D designates the sleeve surrounding the cone C, and E the lateral tube in
communication therewith. The sleeve D is closed at its point of attachment to the
cone C and its other end d is flared as shown. The lateral tube E forms a rotary
pivot for the sleeve and cones and is supported by a step bearing F of the usual
type, the lower end of the tube E being formed with suitable openings e for the
entrance of the air. G designates the spreading cone in front of the flared end d of
the sleeve D and H the vane.
I wish it to be particularly understood that I do not limit myself to the precise
details of construction herein before described and illustrated by the accompanying
drawing, but that I hold myself at liberty to make such changes and alterations as
fairly fall within the spirit and scope of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
(1.) The combination of parts as hereinbefore described and illustrated by the
accompanying drawing forming my improved ventilator.
(2.) In a ventilator, the combination with the fixed cylinder A, of the rotary
cone B carrying an inverted cone C, of the sleeve D surrounding the cone C, of the
lateral tube E in connection with the sleeve D, and of the vane H carried by the
cone B, all combined, arranged and operating as and for the purpose set forth.
(3.) In a ventilator, the combination of the fixed cylinder or tube A, of the
cone B carrying an inverted cone C and having its inner end extended to form a
nozzle C, of the sleeve D encircling the cone C closed at one end and flared at the
other, of the tube E connected to the sleeve D at right angles and adapted to form
a rotary bearing being supported on a step bearing such as F, of the spreading
cone G, and of the vane H, all combined, arranged and adapted to operate, as and
for the purpose set forth.
Dated this 4th day of March 1895.
ROBERT E. PHILLIPS, M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Associate Agent.