Improvement in Electric Gas Lighting Devices.
Year: 1896

page_text: Date of Application, 4th May, 1896-Accepted, 24th Dec., 1896
COMPLETE SPECIFICATION.
Improvement in Electric Gas Lighting Devices.
I, OSCAR VON MORSTEIN of Schoeneberg near Berlin, Germany, Engineer,
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 an improvement in electric gas igniting and
extinguishing devices of the kind described in Patent Specification No. 4670
of 1895 in which an electro magnetic gas cock opener is connected, with a spark
inductor (secondary current) or with glow wires, in the same circuit.
The improvement consists in that after the gas cock has been opened, the
opening electro magnet is cut out of circuit automatically, so that the battery
current then passes through the igniting arrangement only.
In the said Patent Specification is shewn in Fig. 4 an arrangement for the dis-
connection of the cock-opening electro magnet E.
After
This however relates to a
different method of connection. In said Fig. 4, part A, at first only the opening
electro magnet alone is connected in the circuit by means of the spring e.
the cock is opened, (Fig. 4 part B) on the one hand the electro magnet E is cut
out of circuit and on the other hand the inductor P is now for the first time placed
in circuit through the spring p. As distinguished from this arrangement the
present invention relates to a device in which as in Figs. 1, 2, 3 of the Patent
Specification No. 4670 of 1895 the two apparatus, namely the electro magnet
bobbin E and the igniting arrangement L are both connected in the same circuit
from the beginning, so that then after the electro magnet E is cut out of the
circuit, the igniting arrangement alone remains connected in the circuit. It has to
be distinguished whether the two apparatus, opening electro magnet and igniting
arrangement, are connected in series or in parallel.
The former method of connection, namely in series, will be mostly employed
when the igniting arrangement has a small electric resistance (primary bobbin of
a spark inductor). The second method of connection, namely in parallel, will
be mostly employed when the igniting arrangement has a high resistance (glow
wires, glow plate, etcetera).
In Fig. 1 of the accompanying drawing which illustrates the invention the
opening electro magnet E is connected with the primary bobbin L of the inductor
in series.
The current passes from the battery B over the contact C to the inductor L,
then to the opening electro magnet E and from there through the gas pipe R back
to the battery. Now, from between L and E a branch conductor is led to the
contact piece d, a sliding spring for instance, which is so located that with the cock
full open it comes in contact with a contact piece a on the cork plug (or in opening
and closing devices of other constructions with the corresponding moved part).
This is shewn in Fig. 1. The opening electro magnet E is then cut out of circuit
by the short circuiting between d and a and the battery current passes from L
over d and a through the gas pipe R and back to the battery so that it wholly and
solely serves for actuating the igniting apparatus.
In Fig. 24 the opening electro magnet E and the igniting arrangement consisting
of the glow wires L, L, L, are connected in parallel. The current passes from
the battery B over the contact C, and ou the one hand branches off at K to the

page_text: opening electro magnet E, and on the other hand passes to the glow wires L', L³, L.
It returns to the battery through the gas pipe R, this return of current occurring
from E over the contact piece d sliding on the cock plug or on a part attached
thereto. As the glow wires have a far greater resistance than the electro magnet
bobbin E, the larger portion of the current passes through E.
In Fig. 2 the same arrangement is shewn but with the cock opened. In con-
sequence of the turning of the cock through 90°, the contact spring d has come
to lie upon an insulated part 6 of the cock disc H so that there is no contact
between H and d. The current then passes only through the igniting apparatus.
The construction of these apparatus may be varied in different ways, for
example, the contact pieces a, H, b, may be applied to any part moved simul-
taneously with the cock plug, (say to an electro magnet armature which turns the
cock plug) according to the construction of the respective opening arrangements,
as the improvement hereinbefore described may be adapted to any suitable electro
magnetic gas cock opener.
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 :-
In electro magnetic gas closure openers which are combined with electric glow
igniters or spark inductors, the automatic cutting out of the opening electro
magnet from the circuit, by means of the displacement of one of the movable
closing parts such as the plug of a cock, or of an armature, substantially as described
-and shewn.
CAPITAINE & VON HERTLING,
89 Chancery Lane, London, W.C., Agents for the Applicant.