An Improved Electrical Device for Facilitating the Lighting of Gas.
Year: 1894

page_text: Date of Application, 17th May, 1894-Accepted 23rd June, 1894
COMPLETE OFMULE ICATION.
An Improved Electrical Device for Facilitating the Lighting
of Gas.
I, JEAN JAHNSSON, of Regeringsgatan 9, Stockholm, Sweden, Jeweller, do
hereby declare the nature of this invention and in what manner the same is to
he performed, to be particularly described and ascertained in and by the following
statement:-
This invention has for its object an electric apparatus for facilitating the
lighting of gas-jets and which affords the following advantages over other electric
gas-lighting apparatus now in use, viz. :-It is more simple and elegant, it needs
fewer (only 2) electric cells and no induction coil or similar device, it works almost
noiselessly, lights quicker, causes less risk of breaking the glowing mantles or the
like when such are used in the flame, and on account of its simple construction it
cannot get out of order.
In the accompanying drawing I have shown in vertical section a gas-burner,
provided with my improved gas-lighter.
in
My improved electric gas-lighter consists of an electric coil, or solenoid, placed
within the casing of the gas-burner. a and connected with an electric circuít
which is placed a switch or commutator whereby the direction of the current may
be changed. The electric coil or solenoid encircles a core d of soft iron, which is
movable in a vertical direction and is provided with a suitable valve adapted to
m, thus
operate in conjunction with a seating formed around a gas-inlet in the plate
controlling this inlet and cutting off the admission of the gas, when the valve is not
raised. Directly above the said core or valve-body is placed a vertical straight
steel magnet which is uot of sufficient strength by itself to lift the valve d from
its seat over the inlet of the gas. But if an electric current is passed through the
electric coil surrounding the valve d in a certain direction by means of the switch
above mentioned, the valve becomes magnetic and is attracted to the steel-magnet b
and it will remain lifted by the magnetic attraction, thus permitting the gas to flow
through the inlet-opening in the plate m and pass to the outlet-opening of the gas-
burner, where it is ignited by a suitable lighting-device. If the current passing
around the valve-body is then reversed by means of the switch, the said core or
valve-body is repelled and falls down, closing the inlet and cutting off the admission
of gas to the burner, thus putting out the flame.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A device consisting of an electric coil, placed in a gas-burner and connected with
a switch, which coil encircles a soft-iron core provided with a valve and movable in
a vertical direction above the gas-inlet and directly under a straight magnetic steel
rod, in combination with an igniting device for the gas issuing from the burner,
substantially as and for the purpose hereinbefore described and illustrated by the
accompanying drawing.
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.