An Improved Attachment for Incandescent Burners.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
An Improved Attachment for Incandescent Burners.
I, CHARLES HOWARD, of 5, Mosedale Street, Camberwell, London, S.E., Gas
Engineer, do hereby declare the nature of this invention to be as follows:-
In burners constructed and arranged to carry incandescent mantles (such for
instance as that used for the Welsbach mantle), an abnormally large space or
opening is left at the bottom of such burners formed by the gallery for carrying
the chimney, and it has long been known that such opening is objectionable for
the reason that it permits air currents arising from objects or persons suddenly
passing beneath the burner, to pass up the chimney and cause a perceptable flicker
of the light and flame such flicker being likely to rupture the mantle, and various
devices have from time to time been invented, for fixing beneath or within the
said gallery for the purpose of reducing the size of the said opening, most of
which said devices have been so arranged as to entirely close the said opening by
resting upon the usual circular plate, or upon a ridge upon the air inlet tube
below the burner, while their upper edges have surrounded the lower end of the
chimney, so that the air necessary for combustion must first pass down within
the said device, and under the lower edge of and up into the chimney, thus heating
the air before reaching the point of combustion, but it has been found in practies
that this arrangement renders the burner and the said devices so intensely hot
that the life of the former is materially shortened while the latter frequently breaks.
by sudden contraction in cooling when the light is extinquished, and to prevent
the unnecessary undraught in the chimney without the consequent inconveniences
mentioned is the object and purpose of my invention.
For the purposes of my invention I mould or otherwise produce of transparent
glass, of any tint or color. a cup shaped device, having a central hole somewhat
larger in diameter than that of the air inlet tube which it surrounds the said
device having at its lower surface a rim or ridge having arches or other openings
formed therein. or feet. legs, pins or other projections formed thereon and adapted
to rest upon the said shoulder upon the air inlet tube, or upon the plate or disc
that usually rests upon the said shoulder. in such a manner that a space exists
between the lower edge of the said device and the said plate or tube the air
necessary for supporting combustion, entering through the said space and upward
through the device to the chimney, the burner and gallery for the said chimney
when placed upon the said air tube fitting easily within the said device, and by
this means updrought likely to cause flicker of the light or rupture of the mantle
is prevented, while the device itself remains perfectly cool.
0011 1
f T..l.. 1000

page_text: An Improved Attachment for Incandescent Burners.
I, CHARLES HOWARD, of 5, Mosedale Street, Camberwell, London, S.E., Gas
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:-
In gas and other burners constructed and arranged to carry incandescent
mantles, (such for instance as those used for the Welsbach mantle) an abnormally
large space or opening is left at the bottom thereof formed by the necessary
formation of the gallery for carrying the chimney, and it has long be known
that such opening readily permits air currents, arising from persons and objects
passing suddenly beneath the burner, to pass up through the chimney and cause
a perceptable flicker of the light, such flicker being also likely to rupture the
mantle, and devices have from time to time been invented for fixing beneath
or within the said gallery for the purpose of reducing the size of the said space
or opening, most of which said devices have been so arranged as to entirely close
the said opening by resting all round upon the circular plate provided in such
burners and supported upon a ridge formed upon the air inlet tube below the
burner, while the upper edges of the said devices have surrounded the lower end
of the chimney, the effect of such arrangement being that the air necessary for
combustion must first pass down within the said device and under the lower
end of, and up into the chimney to the burner, thus heating the air before reaching
the point of combustion, and it has been found in practice that such an arranged
device causes itself, the burner and the chimney to become so intensely hot that
the life of the burner is materially shortened thereby, while the device and
chimney frequently break by contraction in cooling after the light is extin-
guished, and to prevent the said flickering of the light and the unnecessary up-
draught in the chimney without the consequent inconveniences mentioned is
the object and purpose of my invention, which consists of a glass attachment
constructed, arranged and operating as hereinafter explained and shewn by the
appended drawings, of which.
Fig. 1 is a perspective view of my said invention, while Fig. 2 is a central
sectional elevation of same, Fig. 3 being an elevational view of such a gas burner
and showing my said invention (in section) in position thereon.
My invention consists of a cup shaped device A, moulded or otherwise produced
of transparent glass, plain, fluted or otherwise decorated, and colorless or of any
tint or tints desired. the said device having in its bottom a circular hole B, some-
what larger in diameter than the air inlet tube C of the burner, which it surrounds,
the said device having upon its lower surface a rim or ridge D, in which arches
or openings are formed for admitting air to the burner, or an equivalent of such
arches or openings may be attained by forming upon the lower edge of D three
or more feet such as E, these being adapted to rest upon the usual circular plate F
of the burner, which provides that a sufficient space exists between the lower sur-
face of the ridge or rim D and the plate F for the passage of the air necessary for
supporting combustion, entering between the feet E and passing up through the
hole to the inside of the chimney G, the burner and gallery being supported by
the feet a of the globe carrving arms of the latter, that usually rest upon the
plate F, now resting upon the inside of the device A as shewn in Fig. 3. my said
invention thus serving, in combination with the plate F. for preventing sudden
gusts of wind from passing up through the gallery, while the spaces formed by
the feet E permit the passage of sufficient air to support combustion and keep
the whole comparatively cool.

page_text: 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:-
-
(1) The attachment for incandescent burners substantially as described and
shown.
(2) A glass cup shaped device such as A, having a hole B, rim. D and openings
formed by feet E or their equivalents substantially as described and shewn.
Dated this 28th day of April 1899.
GEO. THOS. HYDE,
1, Broad Street Buildings, London, E.C.,
Agent for the Applicant.
GEO. THOS. HYDE,
1, Broad Street Buildings, London, E.C.,
Agent for the Applicant.