IMPROVEMENTS IN CHIMNEY POTS
Year: 1887

page_text: Date of Application, 18th July, 1887
Complete Left, 5th Mar., 1888
Complete Accepted, 6th Apr., 1888
I, ROWLAND SMITH of 3 Unity Street College Green, in the City and County
of Bristol, Gentleman, do hereby declare the nature of my said invention for
"IMPROVEMENTS IN CHIMNEY POTS" to be as follows:-
I construct my invention of any suitable material or materials and in any desired
design. It consists in an upright pipe crossed, and fitted into at its top with a
longitudinal or cross pipe, open at its ends. This pipe is fitted in its centre with
a valve attached to a spindle which spindle passes upwards and outside the said
longitudinal or cross pipe and suspends and works upon a pivot-the said valve also
suspends vertically across the mouth of the upright pipe at its opening into the
longitudinal, or cross pipe. To the outer end of this spindle is attached a disc or
plate larger in size though lighter in weight than the valve connected at its reverse
end within the pipe the object of this difference in weight being to suspend the valve
vertically within the said longitudinal pipe and across the opening of the upright
pipe, in the absence of wind.
The action of my said invention may be described as follows:-
The outside disc or plate is operated upon by the wind which closes the valve as
described within the said longitudinal or cross pipe, to the windward, allowing the
smoke to pass up through the upright pipe and escape through the lee-ward opening
of the longitudinal or cross pipe. In the absence of wind the spindle suspends
centrally upon its aforesaid pivot, and the valve within the longitudinal or cross pipe
hangs vertically allowing the smoke to pass up through the upright pipe and outwards
at either end of the longitudinal or cross pipe in which the said valve fits and
Buspends.
The result attained by my invention will be readily understood:-The closing of
the valve to the windward excludes the contrary wind and down-draughts, and
provides a free passage for the escape of the smoke to the lee-ward while in the.
absence of any direct currents of wind the valve hangs vertically within the pipe
allowing the passage of smoke on either side of it and its escape through the open
ends of the aforesaid longitudinal or cross-pipe.
E. J. COLSTON FEAR,
Agent for the Applicant.

page_text: I, ROWLAND SMITH of 3 Unity Street, College Green in the City and County of
Bristol, Gentleman, 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 :-
The object of my invention is to manufacture chimney pots in such a manner as to
prevent down draught, and to improve the draught by means of induced currents
arising from the action of the wind.
My improved chimney pots may be constructed of any suitable materials and the
design may be very varied. My invention consists essentially of a vertical pipe
fitted to the chimney flue in the usual manner, to the upper end of which pipe a
horizontal pipe is united; the vertical pipe opening into the horizontal pipe.
In a central position above the vertical pipe a valve is fitted, suspended upon a
pivot fitted to the horizontal pipe, and so connected with a disc above the horizontal
pipe, that the wind impinges upon the same, and causes the valve to close the
horizontal pipe on the windward side of the vertical pipe.
When there is an absence of wind, the valve assumes a vertical position, and allows
the smoke to escape from both ends of the horizontal tube at the same time.
And in order that my said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings in which similar letters of
reference indicate corresponding parts.
Fig. 1 is a sectional elevation of my invention shewing the position of the valve
when there is no wind.
Fig. 2 is a similar elevation in which the wind is supposed to be blowing in the
direction of the arrow.
Fig. 3 is a face view of the two discs.
a is a vertical pipe, placed over the flue, in the usual manner.
b is a horizontal pipe, firmly united to a.
c is a horizontal pivot, or spindle.
d is a valve, of smaller dimensions than the disc e, the two being united by a short
bar which works upon the spindle c.
The valve d is heavier than the disc e so as to secure a vertical position when there
is no wind.
The action of my invention is as follows:-The pressure of the wind on either side
of the disc e, causes the valve d to close the pipe 6 to windward, thus allowing the
amoke to pass up through the vertical pipe and escape through the leeward opening
of the pipe b. In the absence of wind the valve remains vertical as shown in
Fig. 1.

page_text: 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 manufacture and use of Chimney Pots consisting of a vertical pipe a united to
a horizontal pipe b, fitted with a valve d, operated by the pressure of the wind upon
the disc e and both supported upon the spindle c substantially as and in the manner
herein before described and shewn on the drawings.
Dated th: OKL
T
E. J. COLSTON FEAR,
Agent for the Applicant.