Improvements in Chimney Tops or Ventilating Terminals.
Year: 1896

page_text: Date of Application, 10th Mar., 1896
Complete Specification Left, 7th Nov., 1896-Accepted, 12th Dec., 1896
PROVISIONAL SPECIFICATION.
Improvements in Chimney Tops or Ventilating Terminals.
I, JOHN WALKER, of 64, Roscommon Street, Liverpool, in the County of
Lancaster, Plumber, 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
will discharge smoke or air into the atmosphere and in which the wind is made an
accessory in educting the smoke and other volatile products of combustion. It is
so designed moreover that in the case of chimneys it can be swept or cleaned with
ordinary brushes there being no obstruction to prevent the passage of the brushes,
a very desirable thing in all chimney cleaning as it thereby ensures efficient
cleaning.
In carrying my invention into effect, I form a flue or shaft delivering the smoke
directly upwards having the top formed with spiral louvres or vanes, the
construction of which is designed to lead the wind which may blow downwards to
the outside of the flue or shaft. These spiral louvres may be formed in one or
more pieces having suitable rests on which they stand one upon the other, means
being provided such as bolts and nuts for securing them together. The top may be
surmounted by a suitable ornamental flange or eduction mouthpiece. The flue or
shaft moreover is preferably provided with downwardly projecting tubes, the effect
of which will be to increase the draught of the chimney and moreover to enable
any down draught in the flue that may take place to escape.
The mode of action is as follows:-
The smoke passes up the flue and is discharged through the orifice at the top,
the wind assisting, by blowing upwards through the diagonal pipes, and also
through the spiral louvres, in educting the smoke. Any down draught is carried
by these spiral louvres or vanes outside the flue so as not to interfere with the
up-draught of the chimney.
Dated thin 0th don of auch 1000
WM. P. THOMPSON & Co.,
Of 6 Lord Street, Liverpool, Patent Agents for the Applicant.
Improvements in Chimney Tops or Ventilating Terminals.
I, JOHN WALKER of 64, Roscommon Street, Liverpool in the County of
Lancaster, Plumber, do hereby declare the nature of this invention and in what
manuer 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
will discharge smoke or air into the atmosphere and in which the wind is made an

page_text: accessory in educting the smoke and other volatile products of combustion. It is
so designed moreover that in the case of chimneys it can be swept or cleaned with
ordinary brushes there being no obstruction to prevent the passage of the brushes,
a very desirable thing in all chimney cleaning as it thereby ensures efficient
cleaning.
The invention will be understood from the following description, reference being
had to the accompanying drawing in which,
Figure 1 is a front elevation of my chimney top;
Figure 2 a sectional plan;
Figure 3 a sectional elevation;
Figure 4 a plan of one of the spirals separated from the others and slightly
tilted.
Referring to these figures, I form a flue or shaft A delivering the smoke
directly upwards having a top formed with spiral louvres or vanes B, the
construction of which is designed to lead the wind which may blow downwards to the
outside of the flue or shaft. These spiral louvres B are by preference formed in two
or more pieces (in the drawing five separate pieces are shown), each being provided
with rests C on which the louvres stand one above the other, means being provided,
such as bolts and nuts, for securing the ends of the spirals together, or the spirals
may be pinned to the rests C, or they simply rest one upon the other without any
bolts or pins being provided. Similar rests C are provided at the top of the flue
or shaft A, and there are shoulders c on the rests to secure lateral rigidity. The
top may be surmounted by a suitable ornamental flange D or eduction mouthpiece.
The flue or shaft, moreover, is preferably provided with downwardly projecting
tubes E, the effect of which will be to increase the upward draught of the
chimney and moreover enable any down draught of the flue that may take place to
escape.
The mode of action is as follows:-
The smoke passes up the flue and is discharged through the orifice at the top, the
wind assisting, by blowing upwards through the diagonal pipes E and also through
the spiral louvres, in educting the smoke. Any down draught is carried by these
spiral louvres or vanes outside the flue so as not to interfere with the up draught of
the chimney.
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
forming the flue or shaft with spiral louvres or vanes so arranged as to lead the
wind which may blow downwards to the outside of the flue or shaft, in combination
or not as desired with branch tubes projecting diagonally from the flue or shaft
downwards substantially as and for the purpose described.
2. The combination with a chimney or ventilating flue or shaft, of spiral louvres
or vanes resting one above the other on the top of the flue or shaft and surmounted
by a flange or eduction mouthpiece substantially as described.
3. The special arrangement of the spirals or vanes having brackets or rests on
which they are supported one upon the other, in combination with brackets or
rests on the flue or shaft on which the spirals are supported substantially as
described.
4. The general combined arrangement and construction of parts forming my
improved chimney top or ventilating terminal substantially as set forth.
Dated this 4th day of November 1896.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.