Improvements in Chimney and Ventilating Shaft Tops.
Year: 1890

page_text: Date of Application, 22nd May, 1890
Complete Specification Left, 21st Feb., 1891-Accepted, 16th May. 1891
PROVISIONAL SPECIFICATION.
Improvements in Chimney and Ventilating Shaft Tops.
WILLIAM FURNIVAL Tremont Street Wednesfield Road Wolverhampton in
the County of Stafford, Builder BENJAMIN FURNIVAL 119 St. George Street
Smethwick in the County of Stafford Shingler do hereby declare the nature of this
invention to be as follows:-
The object of this invention is to construct an improved atmospheric chimney
pipe or cowl. Adapted to assist the draughts of chimneys, air-shafts, drains.
ventilating pipes and other similar places. And at the same time to prevent all
down draughts. The body of pipes or cowl may be constructed in whole or in part
of terra cotta materials or of galvanized iron, (galvanized iron being preferable)
and made in any suitable sizes as may be required for the fixing of same on
chimneys, air-shafts, drains, ventilating pipes and other similar places.
The nature of our said invention and the manner in which the same is to be per-
formed or carried into practical effect will be readily understood on reference to
the enclosed sheet of drawings, and the following explanation thereof.
(Fig. 1) on the drawings is a front elevation and (Fig. 2) is a sectional view of
the pipe or cowl, constructed according to our improvements, and (Fig. 3) a plan
view of the same.
The body (a) of pipe or cowl may be made either of a square form as shown or
of a cylindrical form as may be preferred. The body of pipe (B) may be made
of oblong form at the bottom, and ending at the top in cylindrical form. This
pipe (B) being fixed within the outer pipe (a) forms the air chamber (E). (d) is
an arrangement fixed on the outer pipe (a) to conduct the air passing up or from
the air chamber, into or towards the centre of outer pipe; causing draught and
preventing all down draughts. The pipe (c) is so arranged that it supplies the air
chamber with a current of air and may be made of any suitable length. (g) is a
bell mouthed elbow fixed on the pipe (c) on a suitable pointed swivel; so that
it is made to rotate, and to always face the wind; by the fly-wing (F) being fixed
on the elbow. The air passes through the elbow pipe (g) down the pipe (c) into
the air chamber (E) and from thence is conducted by the arrangement (d) into
or towards the centre of the outer pipe (a) which increases the draughts of
chimneys, air-shafts etc., according to the pressure of the atmosphere, and
effectually prevents all down draughts.
Dated this 21st day of May 1890
WILLIAM FURNIVAL,
Tremont Street, Wednesfield Road, Wolverhampton, in the County of Stafford.
BENJAMIN FURNIVAL,
119, St. George Street, Smethwick, in the County of Stafford.
COMPLETE SPECIFICATION.
Improvements in Chimney and Ventilating Shaft Tops.
WILLIAM FURNIVAL 8 Tremont Street Wolverhampton Staffordshire Builder
BENJAMIN FURNIVAL 119 St. George Street Staffordshire Smethwick Shingler 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 this invention is to construct an improved chimney and ventilatine.

page_text: shaft top adapted to assist the draughts of chimneys, air shafts, drains, ventilating
pipes and other similar places and at the same time to prevent all down draughts
in chimneys or ventilating shafts. The nature of our said invention and the manner
in which the same is to be performed or carried into practical effect will be readily
understood on reference to the drawings filed with Provisional Specification for this
Patent and the following explanation thereof.
The bodies of the pipes may be constructed in whole or in part of terra cotta
materials or of galvanized iron, (galvanized iron being preferable) and may be
made in any suitable sizes as may be required for the fixing of same on chimneys,
air, or ventilating shaft tops or other similar structures.
On reference to drawings filed with Provisional Specification,
(Fig. 1.) is a front elevation and (Fig. 2.) is a sectional view and (Fig. 3.) is a
plan view.
The body of pipe or shaft (a) may be made either of square form as shown, or
of a cylindrical form as may be preferred. The body of pipe (B) may be made of
oblong form at the bottom and ending in a cylindrical form at the top. This
pipe (B) being fixed within the outer pipe (a) forms the air-chamber (E) and may
be made to slide up and down when necessary to clean out soot from air-chamber.
(d) is an arrangement fixed on the outer pipe (a) to conduct the air passing up or
from the air chamber (E) into or towards the centre of the outer pipe (a). The
pipe (c) is so arranged that it supplies the air chamber (E) with a current of air
and may be made of any suitable length. (g) is a bell-mouthed elbow fixed on a
suitable pointed pivot and is made to rotate and to always face the wind by the fly-
wing (F) being fixed on the elbow. The air is then made to pass through the
elbow pipe (g) down the pipe (c) into the air-chamber (E) and from thence is con-
ducted by the arrangement (d) into or towards the centre of the outer pipe (a)
(as shewn by the arrows) thereby assisting the draughts of chimneys, air or venti-
lating shafts; according to the pressure of the wind and effectually prevents all
down draughts. In the case of air or ventilasing shaft tops, a suitable iron bonnet
is fixed over pipe (a) to prevent rain or snow descending the pipe.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
A chimney, air and ventilating shaft top of a cylindrical or square shape (and
constructed in whole or in part of terra cotta materials or of galvanized iron) fitted
with pipe (B) forming air chamber (E) which is supplied with air descending
through elbow (9) down pipe (c) into air chamber (E) and from thence into or
towards the centre of the interior of pipe (a) (as shown by the arrows) thus
assisting and effectually preventing all down draughts substantially in the manner
and for the purpose herein before more particularly set forth and illustrated by
drawings filed with Provisional Specification.
Dated the 28th day of April 1891.
WILLIAM FURNIVAL.
BENJAMIN FURNIVAL.