Improvements relating to Chimney Pots or Cans, Ventilators, and the like.
Year: 1890

page_text: Date of Application, 28th Mar., 1890
Complete Specification Left, 29th Dec., 1890-Accepted, 31st Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements relating to Chimney Pots or Cans, Ventilators,
and the like.
I, RICHARD ROBERTS, of No. 65, Broad Green, near Liverpool, Lancashire,
Railway Property Inspector, do hereby declare the nature of this invention to
be as follows:-
In accordance with my present invention, and with a view to prevent down
draught in chimney pots, the discharge orifices of ventilating shafts or pipes, and
so forth; I proceed as follows, that is to say: surround the exterior of any of
the above referred to devices with a collar, ledge, or lip, provided with any desirable
number, according to the requirements, of vertical wing pieces or brackets, of
suitable shape, terminating at the level of the mouth of the chimney pot, can,
ventilator discharge orifice, or the like. The object of this arrangement is to
produce a number of separate chambers, or cells in which the wind is received, and
the latter, impinging upon the suitably shaped vertical brackets or wing pieces
aforesaid, ascends, and with it carries upwards the smoke from the chimney top, or
foul air from the ventilating shaft,-
-as the case may be, and thus effectually
prevents any down draught.
Dated this 26th day of March 1890.
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Chimney Pots or Cans, Ventilators,
and the like.
I, RICHARD ROBERTS, of No. 65, Broad Green, near Liverpool, Lancashire,
Railway Property Inspector, 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, reference being also had to the
accompanying drawing, in which :-
-
Figure 1 is an elevation, Figure 2 a plan and Figure 3 a vertical section of a
chimney pot or can constructed in accordance with my improvements, Figure 4
representing by an elevational view a slight modification of same.
In accordance with my present invention, and with a view to prevent down
draught in chimney pots, the discharge orifices of ventilating shafts and so forth, I
proceed as follows, that is to say:
I surround the exterior of any of the above referred to devices A. with a collar,
ledge or lip B provided with any desirable number, according to the requirements,
of vertical wing pieces or brackets a, of suitable shape, terminating at the level of
the mouth of the chimney pot, can, ventilator discharge orifice or the like.
The object of this arrangement is to produce a number of separate chambers or
cells in which the wind is received, and the latter, impinging upon the suitably
shaped brackets or wing pieces a aforesaid, ascends, and with it carries upwards
the smoke from the chimney top, or foul air from the ventilating shaft as the case
may be, and thus effectually prevents any down draught, the upward current from b
mingling so as to accelerate its ascent with a current of air passing through the
apertures e Figure 2. Sometimes I dispense with the collar B and form the
vertical wing pieces a directly on the pot or shaft A. Figure 4.

page_text: 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 :-
A chimney pot, can, ventilator top or the like A. in combination with brackets or
wing pieces a, receptacles, apertures c and with or without a collar or rim B sub-
stantially as and for the purposes specified.
Dated this 29th day of December 1890.
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicant.