Improvements in or relating to Gas Burners.
Year: 1899

page_text: Date of Application, 19th July, 1899-Accepted, 19th Aug.,
1899
COMPLETE SPECIFICATION.
Improvements in or relating to Gas Burners.
I, CHARLES VIVIAN WOOD, of 38, Eagle Street, High Holborn, in the County
of Middlesex, Manufacturer, 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 gas burners such as are used for melting sealing wax,
that is burners in which the gas is automatically shut off, so as to lower the flame
as far as possible without extinguishing it, directly the cock tap or handle is
released by the operator.
Hitherto in this type of burner the cock has been opened against the tension
of a spring, which closed the tap on its release, but it is found that springs are
unreliable being apt to break or become inefficient under constant use, and ex-
posure to the atmosphere, the object of this invention is to produce an automatic
shutting off device which shall be perfectly reliable in its action.
In carrying out the invention I employ a gas cock of ordinary construction
and affix to, or form as the tap of, the plug a weighted lever, so arranged that the
cock is thereby normally held closed or approximately closed, and I may also
provide an adjustable device by which the size of the opening left for the passage
of gas through the cock when the lever is in its normal position, can be regulated
at will, so that a jet of any desired size may be left permanently alight: a con-
venient form being a set screw placed at some convenient position in the lever
and engaging the body of the burner to act as a stop.
A convenient form of sealing-wax burner constructed according to this inven-
tion is shown in the accompanying drawings, of which:-
Figure 1 is a plan, and
Figure 2 a side elevation.
Like letters indicate like parts in both figures.
The burner is of ordinary construction with a stop cock A, socket B, into
which the gas supply pipe is screwed and nipple C, the latter surrounded by a
bell-shaped casing 1 forming a protection to the jet against currents of air.
Fixed on to the tap or head A¹ the cock plug, which forms a rotatable ful-
crum, is a lever, having a long arm E, and a shorter arm E. From the end
of the arm E which is preferably curved so as to be at an angle with the long
arm and parallel to the axis of the cock plug, extends a dependent arm E2 which
carries a weight E3 at its free end.
Fis a set screw which forms an adjustable stop determining the position in
which the lever is normally held by the weight.
The lever is so placed on the plug head, relative to the gas supply orifice of
the plug, that when the lever is in the position shown in full lines in the
figures, being the position in which it is held by the normal action of the weight,
the cock is shut off, entirely, or approximately, dependent on the position of
the set screw or stop F. Usually this is in the position shown in the figures,

page_text: the plug being then held so as to leave a very small passage, allowing only
sufficient gas to pass to keep the jet permanently alight.
By exerting pressure on the long arm of the lever, so as to lower the same and
bring it into or about the position shown in chain lines in the figures the cock
is opened and the jet turned up. This can be readily done by the hand which
holds the sealing wax, leaving the other hand of the operator free to hold the
goods to be sealed.
When however a large number of articles are to be sealed by screwing the set-
screw further through the lever, a jet of any desired size may be permanently
maintained, enabling the sealing operations to be performed without operating
the lever.
Although described above in relation to a burner placed in a horizontal posi-
tion, as is more convenient and usual, it is evident that the device can be applied
to a vertical burner or to a burner at any angle between the vertical and hori-
zontal positions, by arranging the position of the weight relative to the long arm
of the lever.
Other modifications may be made in construction without departing from the
spirit of the invention. For instance the lever may be held normally in a
vertical position by the weight; an independent bye-pass may be provided or a
fixed instead of an adjustable stop may be provided.
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. In a gas burner for sealing purposes the combination with a gas cock plug
of a lever such as E E3 substantially as and for the purpose described or illus-
trated in the accompanying drawings.
2. In a gas burner the combination with a gas cock plug of a weighted lever
arranged to normally hold the cock approximately closed and an adjustable stop
determining the normal position of the lever.
3. The complete gas burner substantially as described or illustrated in the
accompanying drawings.
DL L
T 1
1000
BOULT & WADE,
Agents for the Applicant.