Improvements in Chimney Pots and Ventilators.
Year: 1897

page_text: Date of Application, 2nd Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in Chimney Pots and Ventilators.
I, JOHN JOHNSTON GREEN, of Prospect House, Church Street, Halifax, in the
County of York, Sanitary Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
In carrying out my invention I make the chimney top or ventilator either in
clay, iron, zinc or other suitable material.
The foundation or base is of round, square, octagon, or other convenient shape.
Upon it I fix one or more rows of louvres sloping upwards to assist in producing
an updraught in the chimney. Above these louvres I fix a series of rings each
formed of two conical rings placed with their narrow ends together forming a
> shaped ring with the open end outward and super-imposed so that a narrow slit
or opening is left between the outward edge of the rings. Above this I may
fix a cowl, cap, or cone, or a series of cowls, caps or cones, which may be loose or
formed in one piece with the chimney pot. It is also proposed in some cases to
form the shaped rings thus <so that the smaller end shall be outward and the
narrow slit or opening be left between the inward edges of the ring.
In some cases it may be desirable to fix the rings next to the foundation or base
and the louvres sloping upwards above these.
Dated this 1st day of October 1897.
TASKER & CROSSLEY,
Halifax, Patent Agents.
Improvements in Chimney Pots and Ventilators.
I, JOHN JOHNSTON GREEN, of Prospect House, Church Street, Halifax, in the
County of York, Sanitary Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
In carrying out my invention I make the chimney top or ventilator either in
clay, iron, zinc, or other suitable material.
The foundation or base is of round, square, octagon, or other convenient shape.
Upon it I fix one or more rows of louvres sloping upwards to assist in producing
an updraught in the chimney. Above these louvres I fix a series of rings each formed
of two conical rings placed with their narrow ends together forming a > shaped
ring with the open end outward and super-imposed so that a narrow slit or open-
ing is left between the outward edge of the rings. Above this may fix a cowl,
073

page_text: cap or cone or a series of cowls, caps or cones, which may be loose or formed in
one piece with the chimney pot.
In the accompanying drawings,
Fig. 1, illustrates one method of carrying out my invention, where a is the base
of the chimney pot provided with louvres 6 through which atmospheric air enters,
as indicated by arrows. In combination with these louvres I employ any suitable
number of conical rings c the air entering between the spaces in the super-imposed
rings as shewn by the arrows. The chimney pot may be formed with any suit-
able form of heading or cowl.
In Fig. 2, I have shewn the rings b to occupy a position above the conical rings c,
and if need be, instead of the rings being made with inward cones, they may be
made the opposite way as shewn in Fig. 3. By constructing a chimney pot in
the manner shewn, a perfect updraught is created, and smoky chimnies prevented.
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:
The construction of a chimney pot having louvres 6 in combination with conical
rings c, arranged substantially in the manner shewn in the drawings and described
in the specification.
· Dated this 29th day of June 1898.
TASKER & CROSSLEY,
Patent Agents, Halifax, Agents for Applicant.