IMPROVEMENTS IN CHIMNEY COWLS AND VENTILATORS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, JAMES KING of the firm of King & Co of Reading in the County of Berks
Builders' and General Ironmongers do hereby declare the nature of my invention
for IMPROVEMENTS IN CHIMNEY COWLS AND VENTILATORS to be as follows :-
The improvements have reference to the construction of revolving Chimney
Cowls and Ventilators.
The objects of my invention are to obtain a more efficient economical, light,
durable, and strong piece of workmanship, adapted to work without noise or
to require any but very occasional attention. Another object is to enable repair
or replacement of any part of the apparatus which may become worn out or
damaged to be effected readily and economically.
In this description of cowl or ventilator as generally employed it has been found
that the wearing away or damage of some part or parts has necessitated renewal
of the whole appliance or nearly so and the lubricating means where existent at all
has been located in the fair way or channel that should be free for the passage of
the smoke or other current of aeriform fluid to the detriment of perfect draught.
According to my invention I construct the tube or cylinder to be applied to the
smoke shaft, chimney or air way to be ventilated of metal and so as to fit thereto in
any suitable manner as is well understood. Upon this tube I affix the supporting
pillars of the framework carrying the superstructure the pillars I prefer to be three
in number joined by their upper ends being bent inwards and welded or joined-on
this framework thus formed I affix a bed plate carrying a chamber conveniently
cone shaped, for oil.or other lubricant. This bed plate is secured to the under frame
by means of another frame or ring piece being bolted or attached by screws and
nuts thereto, clasping the bed plate between them. Within this chamber containing
the lubricant are arranged a footstep or bottom bearing and an upper and lower
or laterally supporting bearings or journals for a spindle projecting downwards from
a triangular coned supporting frame which passes downwards and is secured by
screws and nuts or otherwise to supporting pieces on the cowl proper or revolving
ventilating appliance through which the out flowing current passes.
This footstep I form of steel or other suitably hard substance adapted to support
without undesirable wearing away the pointed end of the spindle and to prevent
any noise if possible from passing down the chimney or otherwise, I bed this
footstep on leather or other nonconductor of sound.

page_text: The revolving part or cowl proper is formed cylindrical with apertures in its
sides having inclined or curved plates or shields projecting one from one side of
each aperture and suitably stayed in its proper position by rivetted wires or
supports and strengthening wires or rims are applied at top and bottom of the
cylinder as required. Supported on the spindle of the revolving part is also
secured by screw nut or otherwise a coned cover which serves to enclose and protect
the whole of the parts above the bed plate of the superstructure of the stationary
part with the lubricating chamber and the bearings or journals of the spindle and
access to the lubricating chamber may be had by the removal of a screw or other
stopper placed in this coned cover which closes the outlet of a small tube or channel
which coincides with the upper part of the lubricating chamber and by this channel
fresh supply of lubricant may be added.
To the upper surface of this coned cover is applied a series of curved, or inclined
vanes or projections, suitably strengthened by a circular stay or by stays for the
purpose of aiding the revolution of the cowl and thereby the draught in the chimney
or channel to be ventilated and the better delivery of the smoke foul air or other
fluid to be drawn off.
I find it best to form the framework of wrought iron and the other parts of
copper or galvanized Iron or Zinc and to employ throughout such means of
connection as will render the apparatus not liable to be injured by heat in case
of the chimney taking fire.

page_text: I JAMES KING of the firm of King & Co of Reading in the County of Berks
Builders' and General Ironmongers, do hereby declare the nature of my invention
for IMPROVEMENTS IN CHIMNEY COWLS AND VENTILATORS and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
The improvements have reference to the construction of revolving Chimney
Cowls and Ventilators.
The objects of my invention are to obtain a more efficient economical, light,
durable and strong piece of workmanship, adapted to work without noise or to
require any but very occasional attention. Another object is to enable repair or
replacement of any part of the apparatus which may become worn out or damaged
to be effected readily and economically.
In this description of cowl or ventilator as generally employed it has been found
that the wearing away or damage of some part or parts has necessitated renewal of
the whole appliance or nearly so and the lubricating means where existent at all
has been located in the fair way or channel that should be free for the passage of
the smoke or other current of aeriform fluid to the detriment of perfect draught.
According to my Invention I construct my improved cowl or ventilator sub-
stantially as shewn in the accompanying drawings in which, Figure 1 shews by a
section Figure 2 by a front view and Figures 3 and 4 by plan and cross sectional
views respectively the arrangement of the parts of the same, according to this
arrangement the tube or cylinder a is to be applied to the smoke shaft, chimney
or air way to be ventilated. This tube is made of metal and so as to fit thereto
in any suitable manner as is well understood.
Upon this tube a I affix the supporting pillars 6 of the framework carrying the
superstructure, these pillars I prefer to be three in number joined by their upper
ends b¹ being bent inwards and welded or joined together centrally; on this
framework b b thus formed I affix a bed plate c carrying a chamber & con-
veniently cone shaped, for oil or other lubricant shewn by broken lines therein.
This bed plate c is secured to the under frame b b¹ by means of another frame or
ring piece c¹ being bolted or attached by screws and nuts thereto, clasping the bed
plate c between them. Within this chamber d containing the lubricant are
arranged a footstep or bottom bearing e and an upper bearing or journal g and
lower or laterally supporting bearing or journal f for a spindle h projecting
downwards from a triangular coned supporting frame i which passes downwards
and is secured by screws and nuts j or otherwise to supporting pieces k on the cowl
proper or revolving ventilating appliance A through which the out-flowing current
passes,
The footstep e for the spindle h I form of steel or other suitably hard substanco
adapted to support without undesirable wearing away the pointed end of that
spindle h and to prevent any noise if possible from passing down the chimney or
otherwise I bed this footstep on leather or other nonconductor of sound.
The revolving part A or cowl proper is formed cylindrical with apertures A¹ in
its sides having inclined or curved plates or shields A³, projecting one from one side
of each aperture and suitably stayed in its proper position by rivetted wires or
supports and strengthening wires or rims are applied at top and bottom of the
cylinder as required. Supported on the spindle of the revolving part is also
secured by screw nut or otherwise a coned cover B which serves to enclose and
protect, the whole of the parts above the bed plate of the superstructure of the

page_text: stationary part with the lubricating chamber d and the bearings or journals e, f,
and g, of the spindle h and access to the lubricating chamber may be had by the
removal of a screw or other stopper placed in this coned cover which closes the
outlet of a small tube or channel which coincides with the upper part of the lubri-
cating chamber and by this channel fresh supply of lubricant may be added.
To the upper surface of this coned cover is applied a series of curved, or inclined
vanes or projections, suitably strengthened by a circular stay or by stays, for the
purpose of aiding the revolution of the cowl and thereby the draught in the
chimney or channel to be ventilated and the better delivery of the smoke foul air
or other fluid to be drawn off.
I find it best to form the frame-work of wrought iron and the other parts of
copper or galvanized iron or zinc and to employ throughout such means of
connection as will render the apparatus not liable to be injured by heat in case
of the chimney taking fire.
Having now particularly described and ascertained the nature of my said 1
Invention, and in what manner the same is to be performed I declare that what
I claim is :-
•
The improved arrangement or combination of parts forming a chimney cowl or
ventilator substantially as set forth.