IMPROVEMENTS
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Albert Gendebien at the Office of
the Commissioners of Patents on the 5th October 1882.
ALBERT GENDEBIEN of Brussels (Belgium) Engineer
VENTILATORS"
This Invention relates
"IMPROVEMENTS IN
1st To the arrangement of one, or the, escapements or outlets consisting in a
receiving surface and an outlet.
2nd To a particular form of the outlet or gills which are tangential to the air
inlet galleries.
3rd To a special disposition of twin ventilators suppressing the axis the arms and
the inside paletts.
These arrangements being more particularly advantageous to Mine ventilators.
The first part of the invention applies to the ventilation with fixed ways or
race and to that with moveable ways or race.
In the case of the fixed ways.
Round the revolving arms of the ventilator the casing is made as follows:--two
annular plates surround the circumference of the fan at their inner or smallest
diameter they approach more nearly together than at their outer or larger
circumference so that the air passing from the fan enters between the annular
rings at the narrow space and is driven to the wider space the fan being encased
except at the narrow opening formed by the annular rings, the rings are supported
on their outsides by plates of iron rivetted to them and bedded in the masonry,
external to the larger opening of the annular rings is the circular air channel for
carrying the air where desired.
Continuations of the plates built in the masonry are extended across the spacc
between the annular rings so as to divide the space between the two rings
into cells.
❖
The rings and the outer race can be built in masonry.
The cells thus formed can surround the ventilator. The extension of these
plates or receiving planes cut the outflowing air decomposing the centrifugal and
circular motion of the air so that the air escapes into the race with the maximum
of effect.

page_text: They also avoid the back currents of air and if the openings are too large some
of them can be stopped.
Where the ventilators have the race outlets moveable the system will also apply
or in face of the outlet on the receiving planes a plate is fixed perpendicularly to it
with two lateral sidos also fixed to the ventilator so that the outlet is just in front
of the receiving plane. These projections to give more regularity to the revolutions
of the ventilators can have sheet iron extended from the top of one to the base of
the one before it at a tangent curve to the circumference.
The second part of the invention relating to the arrangement of the galleries
and inlet or take of air; at their ends they are curved and turned down to carry the
air without sudden angles to the inlet of the ventilator the inlet is composed of a
cone continuing the curve described and conducting the air into the centre of the
ventilator at its axis.
The 3 part of the invention consists in placing two ventilators on the same
line of axis one feeding the other thus reducing the weight of the apparatus
enabling it to be well balanced and to acquire consequently higher velocities at any
noment when sudden exigencies require it.
The one ventilator takes the air from the mine then by suitable conduits takes
it to the inlet of the second ventilator, which then distributes it or drives it
into space.