Improvements in or in connection with Incandescent Gas Burners.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in or in connection with Incandescent Gas Burners.
We, GEORGE HENRY FIRTH of 48, Sunbridge Road, Consulting Engineer, FRANK
HOLDSWORTHI BENTHAM of 89, Richmond Road, Machinist, JOHN HENRY STOTT; of.
Mount Street Dye Works, Dyer, all of Bradford in the County of Yorkshire, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in or in connection with burners for incan-
descent gas lighting, the object being to arrange the parts of the burner so that they
will effectually prevent vibratory shocks destroying the mantles.
Our invention consists essentially in the use of an adjustable ring fitted in the
bunsen tube to support the spring carrying the body of the burner; an adjustable
ring fitted in bunsen tube within the spring supporting the body of burner so as to
prevent undue oscillation of the upper portion of the burner; a conical tube made to
slide up and down on the bunsen tube and within the part carrying the outer body of
burner so as to allow universal movement and at the same time prevent the passage
of gas or air from or into the burner, together with other small detail improvements
that will afterwards be referred to.
In carrying out our invention for instance in connection with a gas burner in which
the part carrying the mantle separated from the bunsen burner tube forming the
supply pipe and which is supported by springs or other resilient attachments so as to
prevent the mantle being injured by shocks or vibrations and in the space which
necessarily intervenes between the two parts, we insert a tube, tubes, plate or plates
of metal or other incombustible material of suitable shape and dimensions, in such
way that they fit loosely on the bunsen tube so as to allow of them sliding up and
down while at the same time practically excluding the passage of gas or air between
them. In like manner the loose part of the burner carrying the mantle is made to
slide over the conical or other tube or tubes or bear the plates in such a way that
there is a free sliding movement while at the same time practically preventing a
passage of gas or air in either direction between them. By this means we thereby
obtain an enclosed chamber between the two parts of the burner which forms an
enlarged mixing chamber for the air and gas passing through the bunsen tube in the
ordinary way while maintaining at the same time freedom of movement in any
direction of the upper outside portion of the burner.
Where the burner is one which which is mounted on a conical spring surrounding
the bunsen tube we fix an adjustable ring or washer on to the tube and within the
spring in such a way that when the upper portion of such burners is oscillated in a
lateral direction the ring or washer is more or less close to or in contact with the
internal part of spring at its lower portion and thus prevents any excessive degree of
lateral movement.
..
In case the weighted burner should require vertical adjustment, as when the springs
vary in strength, and so that it may be kept clear of the base plate, we arrange an

page_text: adjustable ring similar to the one for regulating the oscillation but underneath the
spring and on the bunsen tube whereby the position of the weighted portion can be
suitably adjusted when required.
TAYLOR & FIRTH
Agents for the Applicants
Osborne Chambers, 48, Sunbridge Road, Bradford,
Improvements in or in connection with Incandescent Gas Burners.
We GEORGE HENRY FIRTH of 48 Sunbridge Road, Consulting Engineer, FRANK
HOLDSWORTH BENTHAM of 89 Richmond Road, Machinist, JOHN HENRY STOTT of
Mount Street Dye Works, Dyer, all of Bradford in the County of Yorkshire 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 carrying out our invention we make use of the ordinary form of bunsen tube as
used for the incandescent gas burners commonly in vogue at the present time. But
in order to secure the mantles from vibratory shocks that would prematurely destroy
them, we separate the cap which supports the mantle and rod and which is usually
fixed on the bunsen tube, and fit it on to the top of another tube of larger dimensions
than the bunsen and which is made to enclose the latter but without contact other
than that made by a loose plate or conical tube as described later. The said free tube
is made to hang, by means of an internal flange at its upper end, upon the expanded
end of a conical spring, vertically fixed, the smaller end of which is passed over the
bunsen tube and rests on an adjustable supporting ring or nut, or it may rest upon
the inner lower portion of the loose conical tube before mentioned, on the bunsen
tube. Over the exterior of the hanging tube we slip a balance, weight of suitable
dimensions, which by its inertia, prevents a too sudden movement when affected by
shocks, and which rests on an external flange at the lower end of the said tube.
When the free or swinging portion of the burner is suspended on an internal spring,
such as we have described above, we fix upon the upper end of the bunsen tube which pro-
jects within the spring, an adjustable ring shaped on its exterior in conformity with
the taper of the spring, and which can be raised or lowered so as to come more or less
in contact with the spring, according to the amplitude of the lateral oscillations that
may be allowed in the said free parts, whereby a too violent movement in that direction
can by this means be prevented.
In a compact arrangement of burner with gauze cap, such as we have described and
shown in the drawing herewith, we find it necessary to close up the intervening space
between the free tube and the bunsen supply tube, because of the liability of the
combustible to escape and light back at this point, especially if the combustible is to
be used at pressure higher or lower than ordinary.
To seal this effectually, and at the same time allow the swinging part a universal
freedom of movement, we insert a loose conical tube of metal or other refractory
substance between the free tube and the bunsen, in such a way that its upper and
wider end has a sliding contact with the inner surface of the free tube whilst its
lower and narrower end has sliding contact on the bunsen tube, by which means we
obtain the necessary freedom of movement whilst at the same time we get an enclosed.
chamber effectually sealed against the dangerous or wasteful passage of air or gas, and
an enlarged mixing chamber for the combustible from the bunsen or supply tube,
whether the pressure be normal or otherwise.

page_text: The accompanying drawing, in which Fig. 1 is a sectional elevation of the complete
burner and Fig. 2 an elevation of the bunsen tube, will show more clearly the object
of our invention, and its application. A is the ordinary type of bunsen burner
commonly used in incandescent gas burners, B is a cap for fixing on the free tube C,
which may be fitted with wire gauze and a socket for supporting the mantle. Cis
the free tube on which the cap B is fixed and is made with an internal flange D at its
upper end and an external flange H at the lower end. E is the conical spring support-
ing the swinging portion of burner by means of the free tube C. F is the adjust-
able supporting ring or nut fitted on the burner tube for supporting E and for keeping
the loose conical tube K stationary in a vertical direction. G is the balance weight
depending on the free tube C and flange H thereof. J is the tapered nut or ring
fitted on the bunsen tube and made adjustable within the spring so that on being
raised or lowered it allows more or less lateral movement as may be necessary. K is
the loose conical tube which seals the intervening space between the free tube C and
supply tube A.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we wish it to be understood that
we are aware that it has been proposed to employ in anti-vibratory supports for
incandescent gas burners a heavy inert body mounted on a spring interposed between
the heavy body and the Bunsen tube, also that it has been proposed to employ in
such supports a sliding ring or washer intermediate between the Bunsen tube and the
spring supported heavy body, and to such constructions broadly we make no claim;
we are also aware of the Specification of Letters Patent No. 17679. A.D. 1897 granted
to William Richard Clay and claim nothing described and claimed therein, but, we
declare that what we claim is:-
1. The combination of an incandescent gas burner separate from the bunsen tube
or supply pipe supported by a spring or springs; an adjustable nut or ring for
checking lateral movement; a conical sealing tube and an adjustable supporting ring,
all arranged as herein described.
2. In an incandescent gas burner an adjustable nut or ring on the bunsen tube or
supply pipe for checking the lateral movement of the supporting spring substantially
as shown and described.
3. In an incandescent gas burner a loose conical sealing tube free to move in the
intervening space between the loose and fixed parts of burner and forming with
tube such as C an enclosed mixing chamber as shown and described herein.
4. An adjustable supporting ring or nut to carry the spring or springs and keep
the loose conical sealing tube from rising abnormally substantially as shown and
described.
5. The general construction, combination and arrangement of parts forming the
improved incandescent gas burner substantially as described with reference to the
accompanying drawings.
Dated this 31st day of January 1900.
TAYLOR & FIRTH
Osborne Chambers, 48 Sunbridge Road, Bradford.
Agents for the Applicants.