IMPROVEMENTS IN CHIMNEY
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said John Waple at the Office of
the Commissioners of Patents on the 30th May 1883.
JOHN WAPLE of Brixton in the County of Surrey
TOPS AND VENTILATORS"
"IMPROVEMENTS IN CHIMNEY
My Invention relates to an improved chimney top or ventilator and the
Invention consists in a combination of apertures and hoods of peculiar form
whereby the wind from whatever quarter it may blow shall be so deflected as to
create an upward draught in the chimney or flue. There are two series of
apertures in the sides of the chimney top or ventilator, a lower set say three in
number of keyhole form each enclosed by a hood of approximately corresponding
form open at the bottom whilst the upper series are entirely uncovered. The
chimney top or ventilater may be made in metal or earthenware and would be
provided at its base with flanges for securing the same in position as usual.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Waple in the Great Seal Patent Office on the
30th November 1883.
JOHN WAPLE of Brixton in the County of Surrey
TOPS AND VENTILATORS
"
"IMPROVEMENTS IN CHIMNEY
My invention relates to an improved chimney top or ventilator and the invention
consists in a combination of apertures and hoods of peculiar form whereby the
wind from whatever quarter it may blow shall be so deflected as to create an
upward draught in the chimney or flue.
There are two series of apertures in the sides of the chimney top or ventilator
a lower set say three in number of keyhole form each enclosed by a hood of
approximately corresponding form open at the bottom and an upper series entirely
uncovered.
The chimney top or ventilator may be made in metal or earthenware and would
be provided at its base with flanges for securing the same in position as usual.
The invention is illustrated by way of example in the accompanying drawings
wherein Figure 1 shews the chimney top or ventilator in elevation, Figure 2' a plan
or top view thereof Figure 3 a horizontal section on line 1. 1; Figure 1 while
Figure 4 is a vertical section on line 2-2 Figure 2.
The lower apertures a are of keyhole form and each provided with a hood b of
approximately corresponding form.
These hoods which are open at the bottom project about one inch from the
surface of the chimney top or ventilator and they are rounded off exteriorly and
brazed or soldered to the chimney top when of metal or'in the case of earthenware
formed in one therewith. The upper apertures c are uncovered. The two sets of
apertures should be substantially the distance apart represented in the drawings.
Having described the nature of the said invention and the manner of performing
the same I declare that what I claim as the Invention to be protected' by the
hereinbefore in part recited Letters Patent is :-
A chimney top or ventilator constructed with two sets of apertures of which
the lower set are of the form described and provided with hoods while the upper
set are uncovered the whole substantially as herein described and shewn..
In witness whereof I the said John Waple have hereunto set my hand and
seal this thirtieth day of November in the year of our Lord One thousand
eight bundred and eighty three.
ΤΟ ΠΑΤ If