An Improvement in Incandescence Gas Burners.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
*..
An Improvement in Incandescence Gas Burners.
I, WILLIAM MACKEAN, Chemist, of The Welsbach Incandescent Gas Light
Coy. Ltd., of 78, York Street, Westminster, in the County of London, do hereby
declare the nature of this invention to be as follows.
..
When the burners employed for incandescence gas lighting are such as to
cause a perfect and properly proportioned mixture of gas and air to be sup
plied at the point of ignition, it is found in practice that the mantles are liable
to be broken or damaged by the shock of the momentary explosion which takes,
place when the flame is lighted or extinguished.
My invention relates to means of preventing such damage to the mantles!
For this purpose. I so arrange the burner and its stop cock that in the act
of turning on the gas and lighting the flame the supply of air is cut-off or so far
reduced that the gaseous mixture is not of explosive character but only becomes
so after ignition is effected and the gas is fully turned on.
Again in the act of extinguishing the flame, the mixture is first rendered
inexplosive and then the gas is turned off.
This is conveniently effected by fitting on the burner tube a sleeve which
can slide over and cover the lateral air inlets and providing on the tap of the
gas cock a suitable cam to operate on a rod connected to this sleeve. When the
cock is closed the air inlets are also closed, and it is not until the cock is fully
opened and the flame lighted that these inlets are fully open. And in like
manner in turning back the cock for the purpose of extinguishing the flame, the
air inlets are closed before the gas is fully cut off.
Dated this 14th day of October 1899.
ABEL & IMRAY,
Agents for the Applicant.
I, WILLIAM MACKEAN, Chemist, of The Welsbach Incandescent Gas Light
Co. Limited, of 78, York Street, Westminster, in the County of London, 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 follow-
ing statement:-
When the burners employed for incandescence gas lighting are such as to
cause a perfect and properly proportioned mixture of gas and air to be supplied
at the point of ignition, it is found in practice that the mantles are liable to be
Price 811

page_text: broken or damaged by the shock of the momentary explosion which takes place
when the flame is lighted or extinguished.
My invention relates to means of preventing such damage to the mantles.
For this purpose I so arrange the burner and its stop-cock that in the act of
turning on the gas and lighting the flame the supply of air is cut off or so far
reduced that the gaseous mixture is not of explosive character but only becomes
so after ignition is effected and the gas is fully turned on.
Again in the act of extinguishing the flame, the mixture is first rendered
inexplosive and then the gas is turned off.
This is conveniently effected by an appliance which I shall describe referring
to the accompanying drawing shewing in elevation a burner a with its supply
tube b and cock e with by-pass d to supply a kindling jet e. I fit on the burner
tube a sleeve f which can slide over and cover the lateral air inlets, and on the
plug of the gas cock c. I provide a suitable cam projection g to operate on the
end of a rod which is attached to the sleeve f. When the cock is closed the
air inlets are covered by the sleeve f, and it is not until the cock is fully opened
and the flame lighted that these inlets are fully open. And in like manner in
turning back the plug of the cock for the purpose of extinguishing the flame,
the air inlets are closed by the descent of the sleeve before the gas is fully cut
off.
The sleeve f instead of having only its own weight to cause its descent as the
plug of the cock is turned, might be urged down also by a spring.
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:
-
t
In combination with an incandescence gas. burner, its supply tube, stop-cock
and by-pass, a sleeve fitted to slide over the air inlets of the tube anda cam
projection on the plug of the stop-cock adapted to move the sleeve up and so
uncover the air infets as the supply to the burner is turned on, and to permit or
cause the sleeve to descend and cover the air inlets as the supply to the burner
is turned off, substantially as and for the purpose set forth.
Dated this 16th day of June 1900.
ABEL & IMRAY,
Agents for the Applicant.