Improvements in Chimney Tops or Ventilating Terminals.
Year: 1891

page_text: Date of Application, 23rd Jan., 1891
Complete Specification Left, 23rd Oct., 1891-Accepted, 28th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in Chimney Tops or Ventilating Terminals.
I PHILIP HENRY BRACHER of Wincanton, in the County of Somerset, Manu-
facturer do hereby declare the nature of this invention to be as follows:-
-
This invention has for its object a chimney top or ventilating terminal which
shall discharge air or gas into the atmosphere without the wind being able to blow
down it.
In place of the shaft delivering the air directly upwards it is stopped above by
one or more moveable hinge flaps, or if desirable by a solid plate. On two sides
however, or in occasional cases on all four sides, it is open, and a projecting wing
forined in the shape of a right angle triangle with no bottom, and with all the
bottom and of the inner side, from a little above the top of the shaft entirely cut
away, is placed opposite each of these openings into the shaft. The result is that
if the wind blows upwards it blows the smoke out at the top, if it blows downwards
it blows the smoke out at the bottom, while at the same time if the termination of
the shaft be made as one or more flaps the shaft can be cleaned with the ordinary
brushes, and these brushes appear above the top a thing very desirable in all
chimney cleaning as it thereby ensures efficient cleansing.
It will be obvious that in place of this arrangement a single cone could be placed
round the top of the shaft, the said cone being open at the bottom and at the top,
but having a short internal cylinder placed immediately above the termination of
the shaft, which termination can in this instance also take the form of hinged flaps
or valves if desirable.
The cone will be supported on the shaft by rods or their equivalent and in place
of two holes a series of slits or holes can be perforated all round the shaft inside
the outer cone.
Todd f. 1001
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Chimney Tops or Ventilating Terminals.
I, PHILIP HENRY BRACHER of Wincanton, in the County of Somerset, Manu-
facturer, 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 has for its object a chimney top or ventilating terminal which shall
discharge air or gas into the atmosphere without the wind being able to blow down
it. The wind is in fact made an accessory in educting the smoke and other volatile
products of combustion.
In the cocure wring drowin
COMPLETE SPECIFICATION.
Improvements in Chimney Tops or Ventilating Terminals.
1, PHILIP HENRY BRACHER of Wincanton, in the County of Somerset, Manu-
facturer, 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 has for its object a chimney top or ventilating terminal which shall
discharge air or gas into the atmosphere without the wind being able to blow down
it. The wind is in fact made an accessory in educting the smoke and other volatile
products of combustion.
In the accompanying drawings,
Figure 1 is a perspective view of one form of my chimney top or ventilating
terminal.
Figure 2 is an elevation partly in section, shewing a slight modification.
Figure 3 a plan, and
Figure 4 a cross section of Figure 2.
Figure 5 an elevation, partly in section, shewing a further slight modification.
Figure 6 a plan of Figure 5.

page_text: .
In place of the shaft A delivering the air or smoke directly upwards, it is stopped
above by one or more movable hinge flaps, or if desirable by a solid plate or
diaphragm C. On two sides however, or on all sides, it is open and a projecting
wing or hood B (Figure 1) (formed in the shape of a right angle triangle with no
bottom) is placed over these openings into the shaft A.
The wind cannot blow down the shaft A as it is stopped above by the diaphragm
or plate G, but between the projecting tongues of the diaphragm and the hood, is a
passage, down or up which the wind can blow. The smoke passing up, the flue A
impinges against the under side of the diaphragm C, and the result is that if the
wind blows upwards, it blows the smoke out of the top of the hood; or if it blows
downwards it sends the smoke out of the bottom. If the diaphragm C be hinged
instead of fixed, the shaft can be cleaned with the ordinary brushes, and these
brushes appear above the top, a very desirable thing in all chimney cleaning, as it
thereby ensures efficient cleansing.
The examples shown in Figures 2 to 6 inclusive, differ mainly in the shape of
the hood B, which is made in the form of a cylinder, the mode of action remaining
the same.
A is the shaft adapted to fit the interior of the chimney the diaphragm in
Figures 2, 3 and 4 is supported on four rods C' C', whereby it can be lifted or
pushed up when the chimney is swept. The bend near the top of these rods pre-
vents the diaphragm from descending onto the top of the shaft. The corners of
the diaphragm may, if desired, be cut and the blunt ends made to nearly touch the
inside of the cylinder A, whereby the circular or curling motion of the wind in the
chimney is prevented. This object is however effected in a more efficient manner
by leaving the corners of the diaphragm uncut and by fitting four brackets or
corner plates D D rivetted in the inside of the hood A. These brackets can be
made to support the diaphragm in proper position above the shaft, instead of the
bend in the rod C.
With stove pipes and ventilators, the rods C₁ C¹ may be omitted and the
diaphragm C fixed as shown in Figures 5 and 6, or. hinged.
Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improvement in chimney tops, or ventilating terminals, which consists in
locating above and near the top of the shaft or fluc, one or more hinged flaps or a
fixed or movable diaphragm, and placing round or over the said flaps or diaphragm
and the top of the flue, a hood, whereby the wind cannot possibly blow down the flue,
but is made an accessory in educting the smoke or air substantially as described.
2. The arrangement herein described for preventing down draught in chimneys
and ventilating flues, and enabling the smoke or impure air to escape, namely
locating above the top of the flue a fixed or movable diaphragm C, and surrounding
the lateral aperture between the diaphragm and the top of the flue, with a hood, or
shield B, into which the smoke or impure air passes after impinging against the
underside of the, diaphragm, and is discharged at the top or bottom thereof
according to the direction of the wind.
Dated this 23rd day of October 1891
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham, and London, Patent Agents.