Improvements in Incandescent Gas Burners.
Year: 1898

page_text: Date of Application, 25th July, 1898
Complete Specification Left, 21st, Apr., 1899-Accepted, 27th May, 1899
PROVISIONAL SPECIFICATION.
Improvements in Incandescent Gas Burners.
We, WILLIAM CRASKE HALLS, of Alma Villa, Hatton Gardens, Starch Manu-
facturer, and OLAUD WILLIAM GORDON HALLS, of 13, Priory Road, Starch
Manufacturer's Manager, both of Newark, in the County of Nottingham, do
hereby declare the nature of this invention to be as follows:---
This invention relates to what are known as incandescent gas burners for use
with incandescent mantles, and the present improvement relates more particularly
to the burner of the pilot light, used in connection with such burners.
The best position for the pilot light, especially when the burner is used in an
exposed situation or in a lamp placed in the open air, is found to be in the
interior of the mantle, as in this position it keeps the mantle constantly warm
and dry.
When placed in this position however the opening in the pilot burner must
be very minute as the pilot light must be small or it will itself damage the
mantle. A burner with such a small opening as is requisite when constructed
or arranged as heretofore however, is very soon corroded up by the dampness
in the atmosphere when placed in an exposed situation, and the pilot light thus
constantly fails.
It thus follows that in situations where a pilot light in the interior of the mantle
would be of the greatest service, their use is attended with the greatest trouble
and numerous failures.
The object of the present invention is to provide a burner which will give a
small light and may be placed in the interior of a mantle and will not be
attended by any trouble or difficulties, such as those stated.
According to our invention we place the pilot burner as near the centre of
the main burner as possible, and carry it up for a suitable distance alongside
of, and preferably parallel to the prop on which the mantle is supported.
The body of the pilot burner may be fixed in the middle portion of the
main burner, and may be connected by a pipe to an independent supply pipe
provided with a stop cock, or to a bye-pass in connection with the stop cock of
he main supply.
The body of the pilot burner which may be of base metal, is formed preferably
conical with a bore of greater capacity than is actually required, and over the
end we place a preferably removable conical cap. formed of platinum or other
ncn-corrouble metal.
This cap, which is merely a shell placed over the body of the burner in order
to protect it from the atmosphere, is formed with a fine point, and a minute
aperture of the requisite size through which the gas passes.
By removing the cap which will not under any circumstances corrode, nor by
reason of the shape will particles of dust or the like collect round or in the aperture
therein, the larger opening in the body of the burner may be readily cleaned
out if it should become obstructed.

page_text: With this arrangement a constant reliable and steady Hame burning a
minimum supply of gas may be maintained in exposed situations and it thus
may be placed in the interior of the mantle, in which position it keeps the mantle
warm and dry, and free from the effects of any dampness or moisture in the
atmosphere.
D1 1
1
. T 1
1000
Improvements in Incandescent Gas Burners.
We, WILLIAM CRASKE HALLS, of Alma Villa, Hatton Gardens, Starch Manu-
facturer, and CLAUDE WILLIAM GORDON HALLS, of 13, Priory Road, Starch
Manufacturer's Manager, both of Newark, in the County of Nottingham, 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 what are known as incandescent gas burners for use with
incandescent mantles, and the present improvements relate more particularly to
the burner or jet of the pilot light, used in connection with such burners.
The best position for the pilot light, especially when the burner is used in
an exposed position, or in a lamp placed in the open air, is found to be in the
interior of the mantle, as in this position it keeps the mantle constantly warm
and dry.
When placed in this position however the opening in the pilot burner or jet
must be very minute, as the pilot light must be small or it will itself damage
the mantle. A burner with such a small opening as is requisite when constructed
or arranged as heretofore, is very soon corroded up by the dampness in the
atmosphere, or is choked up with corroded matter which creeps up the surface
of or falls into the nipple when placed in an exposed position, and the pilot
light thus constantly fails.
It thus follows that in situations where a pilot light in the interior of the
mantle would be of the greatest service, its use is attended with the greatest
trouble and numerous failures.
The object of the present invention is to provide an incorrodible pilot burner
or jet, which will give a small flame, and place the said jet in such a position
within the interior of the mantle that it will not be attended by any troubles
or difficulties, such as those stated.
The invention will be best understood by reference to the accompanying
drawings, in which
Fig. 1 is an elevation showing part of an incandescent burner to which our
invention is applied.
Fig. 2 is an enlarged view of the pilot burner or jet, partly in section.
Like letters indicate like parts throughout the drawings.
According to our invention we place the pilot burner or jet A. on the middle
part B of the main burner B as shown, and carry it up for a suitable distance
alongside of and preferably parallel to the prop C on which the mantle is
supported. The lower end of the burner or jet may be screwed or soldered into
an opening in the part B as preferred.
The main part of the pilot burner or jet A is preferably formed of nickel
or a nickel alloy such as German silver" and is provided with a bore of much
66

page_text: greater capacity than is actually required. The lower end of the burner may be
connected by a pipe to an independent supply pipe provided with a stop-cock,
or to a bye-pass in connection with the stop-cock of the main supply in the usual
manner.
On the top of the main part A of the pilot jet is placed a removable cap A¹
formed of platinum or other incorrodible metal or material, or composition of
materials. This cap A which may be merely a shell which fits tightly on the end
of the part A, is preferably formed with an approximately conical top having a
minute aperture of the requisite size, through which the gas passes.
By removing the cap A which will not under any conditions corrode, the
large opening in the body A of the burner may be readily cleared out should
it become obstructed.
By reason of the shape of the cap and the position of the aperture, particles
of dust or the like cannot collect round or in the aperture therein, nor by reason
of the distance between the aperture in the cap and the lower edge of the same,
corroded matter from the base metal part A, cannot creep up the surface of the
cap to the aperture and choke it up.
If preferred the cap A may be screwed into or on to the end of the main part A
of the burner or jet, but we prefer the arrangement shown in the drawings, as
the cap A can be more readily removed, and without any instrument, the use of
which would probably damage it.
With a pilot burner or jet constructed and arranged as described, a constant,
reliable and steady flame, burning a minimum supply of gas may be maintained
in exposed situations, and it may thus be placed in the interior of a mantle,
in which position it keeps the mantle warm and dry and free from the effects
of any dampness or moisture in the atmosphere.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1. In an incandescent gas burner a pilot burner or jet comprised essentially
of a main part such as A projecting from the middle part 13 of the main
burner B and an incorrodible cap such as A¹ fitting on the end of the projecting
part A and having an aperture of the requisite size substantially as described.
2. In an incandescent gas burner a pilot burner or jet comprised essentially
of a main part such as A and an incorrodible removable cap such as A' having
an aperture of the requisite size substantially as described.
3. In an incandescent gas burner a pilot burner or jet comprised essentially
cf a main part such as A projecting from the middle part B₁ of the main
burner B and an incorrodible removable cap such as A' fitting on the end of the
projecting part A and having an aperture of the requisite size substantially as
described.
4. The combination and arrangement of parts constituting the complete
pilot burner or jet for an incandescent gas burner substantially as described and
illustrated in the accompanying drawings.
TL 10t
.
1000
WILLIAM CRASKE HALLS.
CLAUDE WILLIAM GORDON HALLS.
Boult & Wade,
Agents for the Applicants