Improvements in Means for Inducing or Assisting the Draught in Furnaces by Means of Compressed Air.
Year: 1897

page_text: Date of Application, 8th Sept., 1897
Complete Specification Left, 6th June, 1898 -Accepted, 8th Sept., 1898
Improvements in Means for Inducing or Assisting the Draught in
Furnaces by Means of Compressed Air.
ARTHUR JOSEPH BROWNE, of 2, Whitford Road, Higher Tranmere, Birkenhead,
Engineer, and THOMAS HENRY BISHOP, of Gordon Cottage, Gordon Road, Cowes,
Isle of Wight, Engineer, do hereby declare the nature of this invention to be as
follows:-
Our invention consists in 1st.-The application of a jet or jets in series, arranged
in a ring, or rings, situated either in the funnel, at the root of the funnel, or in the
uptakes leading to the funnel, through which jet, or jets, compressed air is forced,
so producing an increased draught. These jets (where there are more than one)
may be arranged perpendicular to the plane of the circle in which they are
situated, or, they may be inclined at an angle so that the air issuing from them
may have a greater sweeping effect.
2nd. The application, in conjunction with the jet or jets, of a sheet metal or
other description of hollow cone, or series of cones, placed either partially or
wholly one within the other, concentrically with an intervening space between each
in order to increase the efficiency of air jets.
8rd. The application, in connection with the previous claims, of a coil or other
means of heating the compressed air by means of waste gases in the funnel flues
or uptakes before escaping from the jet or jets.
Dated the 6th day of September 1897.
ARTHUR JOS. BROWNE.
THOMAS HENRY BISHOP.
Improvements in Means for Inducing or Assisting the Draught in
Furnaces by Means of Compressed Air.
ARTHUR JOSEPH BROWNE, Oak Cottage, Bellevue Road, Cowes, late of 2, Whit-
ford Road, Higher Tranmere, Birkenhead, Engineer, and THOMAS HENRY BISHOP,
Gordon Cottage, Gordon Road, Cowes, 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 :-
Our invention consists in 1st-The application of a jet or series of jets d and d
and d arranged either in one or more rings, (or other suitable figure) situated in the
chimney, or funnel a at the root of the funnel, or in the uptakes leading to the
funnel, through which jet or jets compressed air is forced, so producing an
increased draught. These jets (where there are more than one) may be arranged
PR77

page_text: perpendicular to the plane of the body-piece c, to which they are attached, or they
may be inclined at an angle so that the air issuing from them may have a greater
sweeping effect.
2nd. The application in conjunction with the jet or jets of a metal or other
description of hollow coue, or series of cones b and c, placed either partially or
wholly one within the other, concentrically to each other, and also to the jet or jets
there being an intervening space between the cones. The cones being placed in
such a manner that the gases enter at the larger and escape at the smaller ends.
The object of these cones is to increase the velocity of the gases in their passage
through them.
3rd. The application, in connection with the previous claims, of a coil or
other means of heating the compressed air by means of waste gases in the funnel,
flues or uptakes before escaping from the jets. This may be done by forming one
or more of the before mentioned cones, of coiled tubes, c, about which the heated
gases are drawn and through which the compressed air is passed before escaping
from the jets.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1st. The use of a jet or jets through which compressed air is forced to increase
or assist the draught in a funnel, or chimney or flue as d, d, d.
2nd. The use of hollow cones in conjunction with the jet or jets as at 6, b and c.
3rd. The formation of the cones of coiled tubes in which the compressed air
may be heated on its passage to the jets as shewn at c. 'T'he compressed air enters
the coil c at f.
D.]this Ach J Tano 1900
ARTHUR JOSEPH BROWNE.
THOMAS HENRY BISHOP.