Improvements in Ventilators.
Year: 1899

page_text: Date of Application, 28th July, 1899--Accepted, 23rd Sept., 1899
Improvements in Ventilators.
I, HEINRICH OTTO KLEBSCH, of No. 11, Gilgenstrasse, Speyer on the Rhine, Pfalz,
Germany, Mechanic, 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 said invention relates to the construction of a ventilator which driven by
external wind pressure and internal draught has the effect of creating an internal
suction and at the same time an outwardly pressing current.
In order that my said invention may be more clearly understood I will describe
the same with reference to the accompanying drawings in which
Figure 1 is an external elevation.
Figure 2 is a sectional elevation.
Figure 3 is a plan,
And Figure 4 is a sectional plan through xx of Figure 1.
In a ventilator made in accordance with my said invention a is the cylindrical
lower part forming a continuation of the draught conduit. Mounted therein is
a foot-step 6 carrying a pointed vertical shaft or spindle d. The footstep itself
is made as small as possible in order to diminish friction and the arms c which
support it are made as narrow as possible so as not to interfere with the draught.
The vanes f which receive the wind and suck upwards and expel into the open
air the vapour or smoke are curved and put together in a screw-like or spiral
manner so as to form together a vaned ball to which the vertical shaft or spindle d
is secured. A steel ball bearing or guide e for the spindle is carried by a conically
shaped support formed of thin strips or struts e extending upwards and inwards
from the upper end of the cylindrical part a.
The vaned ball is at its greatest diameter wider than the cylindrical part and
has about its greatest diameter a wire ring g to which the separate vanes are
secured in their proper position. The vaned ball is so placed on its cylindrical
support that when it receives the force of the wind at its greatest diameter and
the outward pressure of the vapour the upper part lies in the direction of the
draught while owing to the lower part being spirally arranged thereto the ball
acts as an exhauster.
Owing to the footstep 6 and the pointed spindle d and the scarcely perceptible
friction in the ball bearing guide e the vaned ball shaped head is easily set in
rotation by the external wind and also by the internal draught.
This rotation effects a suction and expulsion of the vapour. Even when the
vaned ball is at rest smoke can escape owing to there being no internal hindrances
to interfere with it.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. A ventilator for continuous working having the wind suction and expulsion
was consisting of bent plates f spirally combined together into a ball shaped

page_text: head carried by an internal bearing substantially as herein before set forth and
shown in the accompanying drawings.
2. The combination of spirally arranged bent plates f forming a ball shaped
ventilating head a pointed central spindle d a footstep 6 and a ball bearing guide e
substantially as and for the purpose-set forth and shown in the accompanying 5
drawings.
1000