IMPROVEMENTS IN CHIMNEY TOPS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I JOSEPH BRIERLEY, of N° 10 Richmond Terrace, Blackburn in the County of
Lancaster, Civil Engineer, do hereby declare the nature of my said invention,
for "IMPROVEMENTS IN CHIMNEY TOPS," to be as follows:-
The object of this invention is, to provide a screen, which will, by breaking the
force of the wind, prevent down rush of wind, and smoke-afford free passage for
chimney sweeping brush, and is of simple and inexpensive construction.
According to this my invention, I mount, on chimney pots of tubular form, two
(or more) cylindrical screens of wire netting, spaced, and concentric to each other-
the said screens, are carried by bolts, passed through holes, formed in opposite sides
of the chimney pot, or top, and the screen netting may be connected, or tied to
each other, and will in case of square, or other shape of chimney pot, or top, be of
form corresponding thereto.
WALTER BRIERLEY,
Crossley Street, Halifax,
Agent for the Applicant.

page_text: CORE DID
I JOSEPH BRIERLEY, of No 10 Richmond Terrace, Blackburn, in the County of
Lancaster, Civil Engineer do hereby declare the nature of my said invention for
IMPROVEMENTS IN CHIMNEY Tors" and in what manner the same is to bo
performed; to be particularly described and ascertained in and by the following
statement:-
The object of this invention is to provide a screen, which will, by breaking the
force of the wind prevent down rush of wind and smoke, afford free passage for
chimney sweeping brush, and is of simple and inexpensive construction.
According to this my invention I mount on chimney tops of tubular form two
(or more) cylindrical screens of wire netting spaced and concentric to each other.
The said screens, are carried by bolts, passed through holes, formed in opposite sides
of the chimney pot, or top, and the screen netting may be connected, or tied to
each other, and will in case of square, or other shape of chimney pot or top be of
forin corresponding thereto.
Such being the nature and object of my said invention, the following is a
complete description of same, reference being had to the accompanying drawings
forming a part of this specification in which:-
Fig. 1 is an clevation shewing my improved apparatus applied.
Fig. 2 is a plan view of Fig. 1.
Fig. 3 is an elevation of the outer cylindrical screen.
Fig. 4 is an elevation of the inner cylindrical screen.
At 1 and 2 are two cylinders constructed of woven wire, or wire netting the
cylinders are concentric to one another and covered by the loose or hinged double
top or lid 2. d: the interior cylinder being so much smaller than the outer one as to
leave an annular space 3 between the two-The inner cylinder being spaced and
secured to the outer ones by wires 4. 4. The screens 1. 2 resting upon tho
brackets 5 of. which I employ about three for a circular top, but four in case the
top and screens are square.
The use of outer and inner woven screens of wire as aforesaid, breaks up and
prevents any direct inrush of air to the interior of the chimney consequently the
smoke cannot be driven down the chimney or flue as heretofore.
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 use of concentric, or inner, and outer spaced wire screens,
described, and illustrated by drawings annexed.
for purpose
Dnted this 27th day of February 1885.
JOSEPH BRIERLEY.
By his Agent, Walter Brierley,
Town Hall Buildings, Halifax.