An Improved Apparatus for Drawing Smoke from Chimneys. also for Ventilating Buildings.
Year: 1892

page_text: 4. Date of Application, 20th Dec., 1892
Complete Specification Left, 19th Sept., 1893-Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
11*
An Improved Apparatus for Drawing Smoke from Chimneys. also
for Ventilating Buildings.
PERCY HALLIWELL of 16 Russell Street Wigan Joiner and JOSEPH HAMPSON
of 23 Greenough Street Wigan Carver in the County of Lancaster do hereby
declare the nature of this invention to be as follows:-
We construct of sheet iron or other suitable substance a tube of any shape
formed at one end so as to fasten to a chimney stack or roof of a building and at
the other end so.-formed by means of concave plates or bafflers, arranged in tiers
with square tubes underneath that it will draw smoke from chimneys or foul air
from buildings. It is to the arrangement and shape of the said concave plates or
bafflers and tubes that our improvements are applied.
Dated this 19th day of December 1892.
PERCY HALLIWELL.
JOSEPH HAMPSON.
COMPLETE SPECIFICATION.
An Improved Apparatus for Drawing Smoke from Chimneys, also
for Ventilating Buildings.
PEROY HALLIWELL of 16 Russell Street Wigan Joiner and JOSEPH HAMPSON
of 23 Greenough Street Wigan, Carver in the County of Lancaster, 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 :-
We construct of sheet iron or other suitable substance a tube of any shape
formed at one end so as to fasten to a chimney stack or roof of a building and at
the other end so formed by means of concave plates or bafflers arranged in tiers
with square tubes underneath that it will draw smoke from chimneys or foul air
from buildings.
In order that our invention may be fully understood we will refer to the
accompanying sheet of drawings.
Fig. 1 of the accompanying drawings is a side elevation of our invention
showing the arrangement of the louvres or bafflers and the short compression tubes.
Fig. 2 is a plan of the same showing the concavity of the plates forming the
said louvres or bafflers with the arrangement of the compression tubes.
In all these figures the same letters and numerals are used to indicate corre-
sponding parts.
In Fig. 1 the tube A is of any shape but preferably square.
The compression tubes B are constructed square on the front and diminish and
curve upwards as they enter the main tube A, by so doing the air entering the
wide mouth of the tube B becomes compressed before entering the main tube A
and thus causing a strong upward current of air.
The louvres or bafflers C are concave and diminish upwards as shown in Fig. 2.
These said louvres or bafflers being concave also direct the air upwards and by so
doing increase the updraught in the main tube A.
The upper louvre or baffler is fastened to the one below by pieces marked D
placed in the four angles formed by the four sides of the louvre or baffler.
The whole is surmounted by a cap or cover marked E having concave sides
CD
17

page_text: which diminish to a point at the top. This cap or cover is supported by stays
marked F placed at the angles.
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
1. The construction shape and arrangement of the short compression tubes B
substantially as described.
2. The construction shape and arrangement of the concave louvres or bafflers
marked C substantially as dessribed.
Dated the 18th day of September 1893.
PERCY HALLIWELL,
JOSEPH HAMPSON,
Applicants.