Improvements in Chimney Tops to Prevent Smoky Chimneys.
Year: 1890

page_text: Date of Application, 11th Nov., 1890
Complete Specification Left, 11th Aug., 1891-Accepted 12th Sant
1804
PROVISIONAL SPECIFICATION.
Improvements in Chimney Tops to Prevent Smoky Chimneys.
We THOMAS HARRISON of 12 Heatley Street Preston in the County of
Lancaster, Beer Seller, and WILLIAM CHALONER of 121, Adelphi Street Preston
aforesaid Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to smoky chimneys in which an apparatus is fixed in
the chimney top, consisting of a valve or clack working on two pivots and
finely balanced so that the least back draft closes the valve or clack and stopping
any smoke from coming down the chimney. Immediately the back draft subsides
the valve or clack assumes its former position.
Dated this 10th day of November 1890.
and
WILLIAM CHALONER.
COMPLETE SPECIFICATION.
Improvements in Chimney Tops to Prevent Smoky Chimneys.
We, THOMAS HARRISON, of 12 Heatley Street, Preston, in the County of
Lancaster, Beerseller, and WILLIAM CHALONER, of 121 Adelphi Street, Preston
aforesaid, Engineer, 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:-
This invention relates to chimney tops and apparatus connected therewith for the
prevention of smoky chimneys. The said apparatus consists of a wing valve placed
within the chimney top at or near its lower end and working on two side pivots the
wing valve being so balanced that any back or down draught will cause the valve
to move round on its pivots and to close the aperture through the chimney pot and
on the cessation of back or down draught the valve will return or move round to its
normal or open position.
In the accompanying drawings
Fig. 1 is an elevation of a chimney pot partly in section shewing the application
of our invention thereto;
Fig. 2 is a side elevation of Fig. 1 also partly in section ;
Fig. 3 is an elevation partly in section corresponding with Fig. 1 but with the
valve apparatus removed;
Fig. 4 is a plan view of Fig. 1 with the upper part of the chimney top removed
so that the arrangement of the valve apparatus may be more clearly seen; and
Fig. 5 is a plan view of the lower part of Fig. 3.
According to our said invention the chimney top is made in two parts namely
in upper part a and a lower part this arrangement facilitating the placing of the
alve apparatus in pcsition and also effecting another purpose namely:-chimney
ops made in two parts as just stated and as hereinafter described may in the first
nstance be put in position on chimneys as for example on new buildings without
aving our improved valve apparatus for which in many cases there may be no
eed but should certain chimneys subsequently prove to be smoky then our valve
pparatus may be readily added to such chimney tops as may be found desirable.
are short arms preferably formed in one piece with the lower part of the
himney top the arms bb supporting the removable brackets or pivot bearings e e
[Price Rd1

page_text: 4
which may be fastened to the arms by set screws dd. e is the wing valve
carried and fast upon the pivot spindle f the said spindle crossing the wing valve
on one side of the centre line thereof. The short end of the wing valve has
attached to its underside a balance weight which is sufficiently heavy to just
overbalance the weight of the long end of the valve e. A cross bar h acts as a
stop to determine the amount of the upward or opening movement of the valve e.
ii are seatings against which the valve e comes in contact when closed by the
pressure of the back or down draught (see broken lines at Fig. 2).
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
:-
Applying to a chimney top for the purpose set forth valve apparatus consisting
of a pivoted wing valve so balanced or adjusted that a down draught in the chimney
top will cause the valve when open to move round on its axis or pivots and close
the aperture in the chimney top, the cessation of the down draught causing the
valve to return or move round to its normal or open position, constructed and
arranged substantially as hereinabove described and shewn in the drawings.
Dated this 11th day of August 1891
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.