Year: 1886

page_text: Date of Application, 28th July, 1886.
Complete Left, 27th Apr., 1887.
Complete Accepted, 27th May, 1887.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of Middlesex, Fellow of the institute of Patent Agents, do hereby declare
the nature of this invention to be as follows:-
This invention relates to a construction of atmospheric gas burner, more
particularly applicable for heating to incandescence a suitably prepared hood of the
kind described in the Specification No. 15286 of 1885.
It consists of a tube the lower part of which is arranged like an ordinary Bunsen
burner, that is to say, into the lower end of the tube is directed a small gas jet, while
air can enter by lateral holes to mix with the gas as both ascend the tube. The upper
end of the tube spreads out into a chamber of hemispherical form which has a flat
cover that does not quite extend to the periphery, so that all round the cover there is
a narrow annular slit through which the mixture of air and gas issues, forming when
ignited an annular flame. Through the hemispherical chamber a number of tubes
pass vertically, these tubes connecting the hemispherical shell to the cover,
and being
open at both ends. Through these tubes air ascends into the middle space within the
annular stream of air and gas mixture, and this air, as well as that which is supplied
outside the annular stream from the surrounding atmosphere, serves for complete
combustion of the gas. The annular flame giving little luminosity but a high degree
of heat, may be applied for many heating purposes, but it is particularly applicable,
as above stated, for heating to incandescence a hood of the kind referred to, causing
it to emit a brilliant light.
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane in the County
of Middlesex, Fellow of the Institute of Patent Agents 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 a construction of atmospheric gas burner, more particularly
applicable for heating to incandescence a suitably prepared hood of the kind described
in the Specification No. 15,286 of 1885.
It consists of a tube the lower part of which is arranged like an ordinary bunsen
burner, that is to say into the lower end of the tube is directed a small gas jet, while
air can enter by lateral holes to mix with the gas as both ascend the tube. The upper
end of the tube spreads out into a chamber of hemispherical form which has a flat
cover that does not quite extend to the periphery, so that all round the cover there is
a narrow annular slit through which the mixture of air and gas issues forming when
ignited an annular flame. Through the hemispherical chamber a number of tubes pass
vertically, these tubes connecting the hemispherical shell to the cover, and being open
at, both ends. Through these tubes air ascends into the middle space within the
annular stream of air and gas mixture, and this air, as well as that which is supplied
outside the annular stream from the surrounding atmosphere serves for the completo
combustion of the gas. The annular flame giving little luminosity but a high degree
of heat, may be applied for many heating purposes but it is particularly applicable as
above stated for heating to incandescence a hood of the kind referred to, causing it to
emit a brilliant light.
Fig. 1 of the accompanying drawings is a vertical section of a burner according to
this invention. G is the orifice by which gas enters the tube, and A A are the lateral
orifices for admitting air. The top of the tube expands in the form of a hemisphere B
with a cover C hold to it by air tubes D, the cover C being somewhat smaller in
diameter than the hemisphere so that there is a narrow annular passage E by which
the mixture of gas and air issues in a flame receiving additional air supply outsido
and also inside. Figs. 2 and 3 are sections shewing modified forms of the burner
suitable for heating an incandescent hood, Fig. 4 is a plan of the burner Fig. 3, and
Fig. 5 is a view of one of these burners with the incandescent hood H supported
within a glass chimney F. In the burner shown by Fig. 2, the gas is supplied
through several small holes at G its quantity being regulated by a setting screw S.
Air entering the lateral apertures A mixes with the gas from G, and the mixture
rises at the top through a wire gauze cap K. The bent wires P adjustable in height

page_text: serve to support the incandescent hood the wire P¹ to guide the glass chimney to
prevent its damaging the mantel or hood and the gallery L carries a glass chimney
and if desired a globe surrounding it. In the burner shewn by Fig. 3 the top of the
tube is covered by a grating K with a central cone N projecting upwards. In this
case the setting screw M for holding the supporting wire P at any desired height
is screwed between two sets of cheeks formed by bending parts of the metal of the
wing opposite ways.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is :-
The construction and use of atmospheric gas burners, substantially as described
with reference to the accompanying drawings.
ABEL & IMRAY,
Agents for the Applicant.