Chimneys.
Year: 1885

page_text: This Specification was, upon the 20th day of April, 1891, Amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
in Chimneys.
HENRY WILLIAM HEADLAND Surgeon's Instrument Maker The Firs High St..
Leyton Essex do hereby declare the nature of this invention to be as follows:-
.
The chief cause of smoky chimneys is generally acknowledged to be due to the
presence of what is technically termed "down draft," that is to say a pressure
occasioned by wind, rain or density of the atmosphere. This pressure the ascending
products of combustion are unable to overcome, and are therefore forced down-
wards, instead of escaping at the top of the chimney, or pot, as originally intended.
This invention called "The Leyton smoke preventing chimney-pot," is so con-
structed as to assist the upward current of smoke, and effectually utilise and
dispose of all opposing influences & currents in the opposite direction.
It consists of an inner and outer cylinder, one fixed over the other, as shewn in
the annexed diagram by A B & C D, in the space, however, between these two
cylinders are placed four tubes, or channels, having each an orifice at the base E and
leading into the interior at F.
Thus, should the wind blow in at E, it is forced to take the direction E F, (as.
shewn by the blue arrows) where it meets and assists the rising smoke.
These channels are also constructed to divide the outer compartment, or pot, into.
four distinct spaces, so that when the wind blows in at the top, it strikes against
the side at B and passes down these spaces in the direction B. G, escaping into the
open air at G, leaving the ascending column of smoke unmolested.
This wind will also enter at the base of the pot, on the weather side, and take
the direction marked by the red arrows M. N.
Thus it will be seen that there are from the eight channels, four ascending
currents, 2 descending only, and two neutral.
In conclusion, it is claimed for this invention, that the powers hitherto provoca-
tive of smoke, are so brought into subjection and utilized, as to assist that which
it formerly obstructed; and by the means explained above to effectually cure the
nuisance of smoky chimneys.
Dated this third day of November 1885.

page_text: the Prevention of Down-araugnt
in Chimneys.
I, HENRY WILLIam Headland, The Firs, High Street, Leyton, Essex, Surgeons'
Instrument, Maker do hereby declare the nature of my invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The chief cause of smoky chimneys is generally acknowledged to be due to the
presence of what is technically termed "down draught," that is to say a pressure
occasioned by wind, rain or density of the atmosphere. This pressure, the ascending
products of combustion are unable to overcome and are therefore forced downwards,
instead of escaping at the top of the chimney or pot as originally intended.
This invention is so constructed as to assist the upward current of smoke and
effectually utilize & dispose of all opposing influences and currents in the opposite
or downward direction.
It consists of an inner and outer cylinder, one fixed over the other as shewn in
the annexed diagrams by A B & C. D, these may be made either straight, tapered
or slanting, in the space between these two cylinders are placed four tubes or
channels having each an orifice at the base E, and leading into the inner cylinder
at F, the number of these tubes may be increased or decreased_at_discretion. Thus
when the wind blows in at E, it is forced to take the direction E. F. where it meets
and assists the rising smoke.
These channels are also constructed to divide the outer compartment or pot into
four distinct spaces, so that when the wind blows in at the top it strikes against
the inside at B, and passes down these spaces in the direction B. G, escaping into
the open air at G, leaving the ascending column of smoke unmolested.
These pots may be made in metal such as zinc and galvanized iron, as well as
tile earthenware or other material.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, 1 declare that what
I claim is
1. That the powers hitherto provocative of smoke are so brought into subjection
and utilized-as to assist that which it formerly obstructed and by the means
explained above, to effectually cure the nuisance of smoky chimneys.
2. That by the arrangement of double-cylinders and compartments, the wind is
utilized as a force.
3. The passage of wind through the chambers causes an exhaust in the chimney
and so draws up smoke.
4. This exhaust renders it eupable of being used as a most effecient and practical
ventilator.
A chimney pot having an inner and an outer cylinder and the channels with the
orifices E and F constructed and operating substantially as set forth and shown in
the drawings.
Dated this 26 day of February 1886.
HENRY WILLIAM HEADLAND.

page_text: An improveu ummmmey HOT HOT
in Chimneys.
I, HENRY WILLIAM HEADLAND, The Firs, High Street, Leyton, Essex, Surgeons'
Instrument Maker do hereby declare the nature of my invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
The chief cause of smoky chimneys is generally acknowledged to be due to the
presence of what is technically termed "down draught," that is to say a pressure
occasioned by wind, rain or density of the atmosphere. This pressure, the ascending
products of combustion are unable to overcome and are therefore forced downwards,
- instead of escaping at the top of the chimney or pot as originally intended.
.
This invention is so constructed as to assist the upward current of smoke and
effectually utilize & dispose of all opposing influences and currents in the opposite
or downward direction."
.It consists of an inner and outer cylinder, one fixed over the other as shewn in
the annexed diagrams by A B & C. D, these may be made either straight, tapered
or slanting, in the space between these two cylinders are placed four tubes or
channels having each an orifice at the base E, and leading into the inner cylinder
at F, these tubes may be increased or decreased at discretion. Thus when the wind
blows in at E, it is forced to take the direction E. F. where it meets and assists the
rising smoke.
These channels are also constructed to divide the outer compartment or pot into
four distinct spaces, so that when the wind blows in at the top it strikes against
the inside at B, and passes down these spaces in the direction B. G, escaping into
the open air at G, leaving the ascending column of smoke unmolested.
These pots may be made in metal such as ziuc and galvanized iron, as well as
tile earthenware or other material.
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. That the powers hitherto provocative of smoke are so brought into subjection
and utilized as to assist that which it formerly obstructed and by the means
explained above, to effectually cure the nuisance of smoky chimneys.
2. That by the arrangement of double cylinders and compartments, the wind is
utilized as a force.
3. The passage of wind through the chambers causes an exhaust in the chimney
and so draws up smoke.
:
4. This exhaust renders it capable of being used as a most efficient and practical
ventilator.
Dated this 26th day of February 1886.
2 ..
HENRY WILLIAM HEADLAND.

page_text: HENRY WILLIAM HEADLAND Surgeon's Instrument Maker The Firs High St.
Leyton Essex do hereby declare the nature of this invention to be as follows:-
The chief cause of smoky chimneys is generally acknowledged to be due to the
presence of what is technically termed "down draft," that is to say a pressure
occasioned by wind, rain or density of the atmosphere. This pressure the ascending
products of combustion are unable to overcome, and are therefore forced down-
wards, instead of escaping at the top of the chimney, or pot, as originally intended.
This invention called The Leyton smoke preventing chimney-pot," is so con- .
structed as to assist the upward current of smoke, and effectually utilise and
dispose of all opposing influences & currents in the opposite direction.
"
It consists of an inner and outer cylinder, one fixed over the other, as shewn in
the annexed diagram by A B & C D, in the space, however, between these two
cylinders are placed four tubes, or channels, having each an orifice at the base E and
leading into the interior at F.
Thus, should the wind blow in at E, it is forced to take the direction E F, (as
shewn by the blue arrows) where it meets and assists the rising smoke.
These channels are also constructed to divide the outer compartment, or pot, into
four distinct spaces, so that when the wind blows in at the top, it strikes against
the side at B and passes down these spaces in the direction B. G, escaping into the
open air at G, leaving the ascending column of smoke unmolested.
This wind will also enter at the base of the pot, on the weather side, and take
the direction marked by the red arrows M. N.
Thus it will be seen that there are from the eight channels, four ascending
currents, 2 descending only, and two neutral.
In conclusion, it is claimed for this invention, that the powers hitherto provoca-
tive of smoke, are so brought into subjection and utilized, as to assist that which
it formerly obstructed; and by the means explained above to effectually cure the
nuisance of smoky chimneys.
7