Improvements in Apparatus for Propelling, Purifying, Moistening, or Disinfecting Currents of Air or other Gases for Ventilating or for other Purposes.
Year: 1899

page_text: Date of Application, 1st Apr., 1899-Accepted, 20th May, 1899
COMPLETE SPECIFICATION.
Improvements in Apparatus for Propelling, Purifying, Moistening, or
Disinfecting Currents of Air or other Gases for Ventilating or for
other Purposes.
I, JOHN THOMPSON COPE, of 86, Tiverton Road, Selly Oak, near the City of
Birmingham, in the County of Warwick, Hot Water 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 in the first place to the exhaustion and propulsion of air
or other gases by means of revolving fans or propellers and consists of constructing
an apparatus with two or more such revolving fans or propellers within a common
air tube or duct following each other with an increased pitch of the blades or
vanes or by an increased velocity of revolution thereby increasing the pressure
and velocity of the current of air or other gases and considerably augmenting
the efficiency of any such apparatus of a given size. In the second place my
invention consists of the application for the purposes of purifying, moistening or
otherwise affecting currents of air for the purposes of ventilation of a circular
revolving disc or drum of a porous material covering the opening in the air
passage or duct, the bottom part of such disc or drum dipping into a trough or
cistern filled with water or other suitable or disinfecting fluid with which the whole
porous surface of the said disc or drum is saturated by the slow revolution of the
latter. In the two accompanying sheets of drawings to be hereinafter referred
to:-
Figure 1 Sheet 1 is a longitudinal section of an air exhausting or propelling
apparatus constructed in accordance with my invention.
Figure 2 Sheet 1 is a modified form of construction of same.
Figures 3 and 4 Sheet 1 show end views of Figures 1 and 2 respectively partly
in section. Figures 5 and 6 Sheet 2 are front and side elevations partly in section
of a revolving apparatus for purifying moistening or disinfecting currents of air
or other gases constructed in accordance with my invention.
The same letters of reference apply to corresponding parts throughout all the
figures.
In Figures 1 and 3 Sheet 1 AA is the air duct or casing constructed preferably
of sheet or cast iron or other metal and of circular or other cross section.
BB are
circular metallic rings or facings close to which are mounted the fans or pro-
pellers CD mounted on the spindle E. The bearing of the spindle next the
primary propeller C is carried in the usual way by brackets cc bolted to the
ring Band that next to the secondary propeller by a bracket or arm bolted or
rivetted within the air duct or casing as shown, or to the ring B if there is no
continuation of the air duct or passage. is the drawing pulley with the cord or
belt G actuated by any suitable motor. The fans or propellers are constructed in
any known or approved manner and may both be of the same size or may vary in
diameter but in accordance with my invention in this form the second, or other
C

page_text: Around
following fan or propeller is so pitched as to propel the air through the air duct at a
greater pressure and velocity than is the case with the first or primary propeller.
In Figures 2 and 4 Sheet 1 is shown a modified arrangement by which the fans
or propellers can be run at varying speeds so that whether of equal or other pitch
the desired increase of pressure and velocity is obtained by the greater speed of
the second or following fan. The latter is mounted on the spindle E running as
before in bearings carried by brackets and arm d with driving pulley e.
this spindle is mounted the tubular spindle F upon bearings ff with collar fl
and driving pulley f the proportions of the driving pulleys being so arranged as
to get the varying speeds from one sized pulley on a counter shaft or the pulleys e
and f may be of equal size and geared with large and small pulleys on the counter
or driving shaft. The bearings of the spindles may be plain or may be if preferred
of the ball, roller, or other anti-friction type. Small lubricating pipes may be
fixed to fill from the outside of the air duct or casing to supply the inner bearings.
Figures 5 and 6 Sheet 2 show my new or improved apparatus for purifying
moistening or disinfecting currents of air for ventilating or other purposes.
His
a circular revolving disc or drum, preferably of a conical shape consisting of a light
metallic rim, arms, and hub h with adjustable collar, mounted upon the
spindle I. The covering of the framework forming the dise or drum is
composed of cocoa nut fibre, asbestos, or other suitable material of a sufficiently
porous nature to allow of a comparatively free flow of air through the disc or drum
at the same time arresting all particles of dust microbes or other deleterious
matter.
The fibrous fabrics are attached by screws or wired or otherwise attached to the
framework H¹ and may be tightened by the movable collar as shown. The
disc or drum H is mounted within the metallic or other ring which is bolted or
otherwise attached to the brickwork or other casing of the inlet chamber K. J is a
trough or cistern preferably of cast iron or other suitable material
or it may be constructed with brickwork in cement as a part of the
air inlet chamber K, and is filled with water or other suitable disinfect-
ing fluid.
The spindle I is mounted upon the bearings which may be of
ordinary metal bushes or may be of any anti-friction type. These bearings are
carried by the girders or by other equivalent supports, built in or otherwise
attached to the brickwork or metallic casing K L of the inlet or outlet air chambers.
The tank or cistern J is connected with the filling pipe and cock jj and with the
overflow pipe N and the water or other fluid may be made to flow gently through
the trough or cistern so as to carry away any dust or deleterious matter.
small secondary vessel R supplied with disinfecting fluid may be arranged
with a regulating tap allowing of the passage of a limited quantity of the said fluid
so that the chemical proportions of the disinfectant may be kept up automatically.
O is a drain to carry away any such fluid.
A.
The spindle I together with the disc or drum H is slowly rotated by any con-
venient motive power, connected in one way by the cord or belt P pulley trans-
verse spindle worm wheels 722 mounted within the inlet air chamber as
shown. By these means the porous surface of the disc or drum is kept well
moistened either by capilliary attraction arising from the immersion of the lower
part in the tank or cistern J or by the dripping of the fluid from the surface of
the disc or drum which is carried above the level of the fluid in the tank or cistern
by the revolution of the said disc or drum.
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. The construction and use for the exhaustion and propulsion of air or other
gases for the purposes of ventilation of two or more fans or propellers mounted on
one spindle in a common air duct or casing and varying in proportion and in the

page_text: pitch of the blades or vanes to increase the pressure and velocity of the air current
substantially as and for the purposes hereinbefore described and set forth.
2. The construction and use for similar purposes of two or more such fans or
propellers, one mounted upon a central spindle, the others upon tubular concentric
spindles and driven at varying rates of speed substantially as and for the purposes
hereinbefore described and set forth.
3. The construction and use for purifying moistening and disinfecting currents
of air or other gases for the purposes of ventilation of a slowly revolving circular
disc or drum covered with a porous fabric the lower part of which is immersed in
water or other suitable or disinfecting fluid for saturating the said porous fabric
and for the purpose of arresting particles of dust, microbes or other deleterious
matter in the air or gases passing through the air ducts substantially as and for
the purposes hereinbefore described and set forth.
That this 10th of it. 1800