Improvements in and relating to Burners for Gas-lighting by Incandescence.
Year: 1899

page_text: Date of Application, 16th Sept., 1899-Accepted, 2nd Dec., 1899
COMPLETE SPECIFICATION.
Improvements in and relating to Burners for Gas-lighting by
Incandescence.
-
We, WILLIAM LAWRENCE VOELKER, of 16, Sardinia Street, Lincoln's Inn
Fields, London, W.C., and THE VOELKER INCANDESCENT MANTLE LIMITED, of
33, Old Broad Street, in the City of London, Manufacturers, 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 burners for gas-lighting by incandescence.
One feature of our said invention consists in making the Bunsen-tube with a len-
ticular or disc-shaped chamber or enlargement at or near the lower end thereof,
having in its lower or, if desired, in its upper wall, holes for the admission of air
to the burner. By this means, the entering air is caused to impinge on the
upper or other inner wall of the said enlargement or chamber, and the velocity
of the air-current ascending the smaller part of the Bunsen-tube is thus rendered
approximately constant notwithstanding external draughts or currents, and the
flickering or disturbing effects of the latter on the light are consequently obviated
or greatly reduced.
Another feature of our said invention consists in the means which we provide
for regulating the quantity of air and gas admitted to the burner, this being
effected in the case of the air by arranging a perforated ring or annular valve to
slide over the air-holes in the said enlargement or chamber so that, by turning
the said ring or valve, the air-admission can be regulated or controlled as desired.
In the case of the gas, we arrange in the inlet-jet a perforated diaphragm and a
correspondingly perforated disc to move over the said diaphragm, the apertures
in this disc being preferably elongated and inclined relatively to a radius of the
disc so that the area of the gas inlet passages will be gradually increased or
diminished or closed as the said disc is turned in one or the other direction.
We prefer, however to arrange the apertures in the said disc in such a manner
that the gas cannot be turned entirely off when the cock is turned in one direc-
tion, but can be turned entirely off when the cock is turned in the other direction
thus enabling the device to serve the purpose of a bye-pass.
Our said invention, moreover, comprises other improvements hereinafter set
forth.
In the accompanying drawing we have shown how our said invention may he
conveniently and advantageously carried into practice.
Figure 1, is a side elevation, partly in vertical section.
Figure 2, an underside view, partly in transverse section, showing an incan-
descent gas-burner having our improvements applied thereto.
Figure 3 is a side elevation of part of our improved burner showing an arrange-
ment for use in connection with burners in elevated positions whereby the gas
can be conveniently turned on and off from below, for example, in street-
lighting.
Figures 4 and 5 are side elevations, taken at right angles to each other, show-
ing a modification of the arrangement shown in Figure 3.
a is the inlet-jet or nipple in the upper end of which is mounted the Bunsen-
tube 7 having at its lower-end a lenticular enlargement or chamber
formed

page_text: by two dished rings united to each other at their outer edges. In the lower wall
of the said chamber is formed a series of apertures and on the underside of
the said chamber is loosely mounted a ring e held in place by an inwardly-turned
flange on the upper dished ring. This ringe is provided with a series of aper-
tures of similar size and pitch to those in the lower wall of the chamber and
is formed with a series of projections whereby it can be readily turned about its
axis. By turning this ring or annular valve c the apertures can be wholly or
partially opened and can be entirely closed, and the air-supply thus regulated
as required. In order to facilitate the opening of the said apertures to any pre-
determined extent, one of the relatively movable parts c, & can be provided with
a datum mark and the other with a series of graduations, as shown in Figure 2.
In the upper part of the inlet-jet or nipple a is mounted a diaphragm having
a number of apertures and above this diaphragm is mounted an adjustable
disc e having a series of apertures e' which are elongated and inclined relatively
to a radius of the said disc e so that, as the said disc is turned in one or the other
direction, the apertures will be gradually opened or closed. The said disc
and its apertures are preferably so arranged that the gas-way cannot be entirely
interrupted thus obviating the necessity of employing a separate bye-pass for
feeding a pilot-light on the burner. The disc e is held against its seat and turned
by means of lateral arms or projections e² which are formed thereon and extend
through segmental slots in the lower wall of the chamber and can be readily
manipulated. These arms e² preferably move over graduations as shown, so as
to facilitate the opening of the apertures to any predetermined degree.
By the above described improvements we render the burner more efficient than
heretofore and are enabled to use a Bunsen-tube of smaller diameter than those
generally employed.
The gallery is provided with apertures f¹ as usual for the admission of air
into the space between the mantle and the chimney h, but, in making our im-
proved burner, instead of stamping the said apertures in the gallery so that the
pieces of metal are entirely removed, we arrange the stamping dies so that the
said pieces of metal f2 will remain attached to the gallery f along the inner edge
of the aperture and we then hend the said pieces f downward into a horizontal
position so that they will form guards or shields beneath the said apertures to
protect the same from draughts or rapid currents of air.
If desired the said guards f can be secured to the outer edges of the aper-
tures and he bent downwards. Or they may be formed separately and attached
to the gallery f after the manufacture thereof as may be found most convenient.
In Figure 3, an arrangement is shown whereby burners mounted in elevated
positions can be conveniently controlled from below. For this purpose, one of the
lateral arms or projections of the disc e is made forked, as at 3, and between the
limbs of the said fork is arranged a projection j formed on a double-armed lever
pivoted at to the nipple a. To the arms of the said lever are attached cords,
chains or the like whereby the disc e can be turned in one or the other direc-
tion to open or close the apertures d', as required. In the arrangement shown
in Figures 4 and 5, we effect the same object by providing inclined projections j
on the arms, one or other of these projections being adapted to engage with
the corresponding projection on the disc e and turn the said disc in one or the
other direction accordingly as it is desired to open or close the apertures . In
Figure 4. we have shown an alternative form of our improved burner in which
a separate bye-pass & extends from beneath the diaphragm d for the purpose of
supplying a pilot-light with gas.
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: --
1. A urnor of the 1:1 1.
• 1

page_text: made with a lenticular or like enlargement or chamber at or near the lower end
thereof having apertures in its lower or upper wall, substantially as and for the
purpose herein before described.
2. The Bunsen-tube having the perforated lenticular or like enlargement or
chamber and the perforated ring or annular valve adapted to be moved over the
perforations therein, substantially as and for the purposes hereinbefore described.
3. The combination of a perforated diaphragm in the gas-inlet passage, and a
perforated disc adjustable relatively to the said diaphragm and provided with
means whereby it can be turned from the exterior of the burner, substantially
as, and for the purposes herein before described.
4. The combination of the Bunsen-tube having the perforated enlargement or
chamber, the inlet-jet or nipple, and means for regulating or controlling the
admission of air and gas to the said tube, substantially as and for the purposes,
hereinbefore described.
5. The gallery provided with the guards or shields for protecting the apertures
serving for the admission of air to the space around the mantle, substantially as
hereinbefore described.
6. The improved incandescent burner constructed substantially as described
with reference to Figures 1 and 2, or to Figure 3, or to Figures 4 and 5 of the
accompanying drawing and for the purposes specified.
Dated this Cintrondh
سمل
e
1000
D. YOUNG & Co.,
11 and 12, Southampton Buildings, London, W.C.,
Agents for the Applicants.