Improved Electric Igniting Apparatus.
Year: 1894

page_text: Date of Application, 20th Dec., 1894
Complete Specification Left, 18th Sept., 1895-Accepted, 19th Oct., 1895
PROVISIONAL SPECIFICATION.
Improved Electric Igniting Apparatus.
We, ANTON FINDENIGG, of IV Belvedergasse 12, Vienna, Austria,
Electrician, and JULIUS SCHWARTZ, of I Fleischmarkt 6, Vienna, Austria,
Merchant, do hereby declare the nature of this invention to be as follows:-
The usual electric igniting apparatus worked with battery current are all
constructed in such a manner that the trigger or spark arm is always under
electric tension so that while kindling and while extinguishing the flame, a closing
and an interrupting spark results which causes the inconvenience that the battery
Boon becomes too weak and a great loss of electrical energy is produced, while on
the other hand high tension currents cannot be used with such apparatus.
This invention relates to an improved construction of such apparatus whereby
they can be used either with currents of high intensity, or with battery currents.
The invention consists mainly in the arrangement of two separate contacts in the
electric circuit, so arranged that a closing of the circuit is effected only on
making the second contact at the time when the trigger is operated for producing
the igniting spark, immediately before the contact between the metallic brush and
the lamp is interrupted, while when the trigger or arm is turned back, the brush
contact is only closed when the first contact is broken.
For this purpose the apparatus is constructed as follows.
According to one arrangement the lamp body carries in its lower part, below the
reservoir, an induction coil the primary circuit of which is connected at one end
to the lamp body and the other end to the one pole of the battery, the second
pole of which is connected by an insulated wire to an insulated spring contact
plate projecting up at the side of the lamp, opposite the burner.
The trigger or spark arm is pivotted to an insulated. support at the top of the
lamp just in front of the said spring contact and carries at its end a metal brush
which, when the arm is turned down on its pivot, makes contact with the lamp
burner; in this position of the arm, however, it is out of contact with the spring
contact and the circuit is consequently still broken. The brush holder is pivotted
to the spark arm and is acted upon by a spring tending to keep it in the horizontal
position in which it makes contact with the lamp.
When, for the purpose of lighting the lamp the trigger or spark arm is raised,
the frictional contact between the brush and the lamp burner tends to keep the
brush back, so that its holder turns on its pivotted connection with the spark arm
against the action of the spring as the arm is raised. By the movement of the
latter, a projecting edge thereof is brought in contact with the before mentioned
spring contact plate, and thus, by making this second contact the battery circuit
is momentarily closed; but this closing is only momentarily effected, as immediately
afterwards the spring of the brush overcomes the resistance of its contact and
throws the brush holder up into its original position on the spark arm, thus breaking
the contact with the lamp. and consequently interrupting the battery circuit again.
By this interruption a high tension current in the secondary circuit of the
induction coil is produced the leads of which are brought up to contacts at the
lamp burner, so as to produce a spark which ignites the lamp. On the spark arm
being finally raised to the vertical position, its projecting edge comes out of
contact with the spring contact plate again, and thus both contacts of the circuit
are broken.

page_text: On turning down the spark arm again, its projection first makes contact with
the spring contact, then breaks that contact, again, after which the brush makes
contact with the lamp again, so that at no time during this movement is the circuit
closed.
Instead of connecting the battery wires directly with the induction coil and
spring contact of the lamp, the latter may be made detachable from the battery
wires by making these terminate in contact plates in a socket into which the base
of the lamp is inserted..
This base, which is of insulating material, also has two contact plates connected
respectively to the induction coil and the spring contact of the spark arm, so that
on inserting the lamp in the socket, the two sets of contact plates are put in
contact, thereby connecting the lamp with the battery.
According to another arrangement of the above described double contact
apparatus, the induction coil is not in the lamp but in a separate wall bracket
having a tubular socket into which the upper end of the lamp is introduced with
friction so as to be held thereby. The spark arm is also held by the bracket and
projects into the socket so that its spring contact brush is in contact with the
lamp burner when the lamp is inserted. The arm has a tail with a contact piece
situated opposite a contact connected to the battery circuit, but ordinarily kept
out of contact therewith by a spring. On withdrawing the lamp from the socket,
the frictional contact between the burner and the brush causes the latter to turn
the spark arm against the action of the before mentioned spring, until the tail
of the arm makes contact with the battery contact and thus closes the circuit.
Immediately afterwards, the farther withdrawal of the lamp from the socket
breaks the contact between its burner and the brush and consequently also the
primary circuit of the induction coil, and the resulting secondary current produces
a spark which ignites the lamp.
Dated this 20th day of December 1894.
ABEL & IMRAY,
Agents for the Applicants.
We, ANTON FINDENIGG, of IV Belvedergasse 12, Vienna, Austria, Electrician,
and JULIUS SCHWARTZ, of I Fleischmarkt 6, Vienna, Austria, Merchant, 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:—
The usual electric igniting apparatus worked with battery current are all con-
structed in such a manner that the trigger or spark arm is always under electric
tension so that while kindling and while extinguishing the flame, a closing and an
interrupting spark results which causes the inconvenience that the battery soon
becomes too weak and a great loss of electrical energy is produced, while on the
other hand high tension currents cannot be used with such apparatus.
This invention relates to an improved construction of such apparatus whereby
they can be used either with currents of high intensity, or with battery currents.
The invention consists mainly in the arrangement of two separate contacts in the
electric circuit, so arranged that a closing of the circuit is effected only on making
the second contact at the time when the trigger is operated for producing the
igniting spark, immediately before the contact between the metallic brush and the
lamp is interrupted, while when the trigger or arm is turned back, the brush
contact is only closed when the first contact is broken.

page_text: * I will describe the said invention with reference to the accompanying drawings,
in which Figure 1 shews a part elevation and part section of one construction,
Fig. 2 shews an enlarged cross section, and Figure 3 an enlarged view of the
interrupter device.
According to this arrangement the lamp body A carries in its lower part, below
the reservoir L an induction coil J the primary circuit of which is connected at one
end to the lamp body L and the other end to the one pole of the battery, the
second pole of which is connected by an insulated wire a to a spring contact
plate & projecting up at the side of the lamp, opposite the burner, and insulated by
vulcanised caoutchouc c.
The trigger or spark arm B is pivotted to an insulated support C at the top
of the lamp just in front of the said spring contact, and carries at its end a metal
brush mounted in a socket e and which, when the arm is turned down on its
pirot B makes contact with the lanp burner, in this position of the arm B
however, it is out of contact with the spring contact 6 and the circuit is con-
sequently still broken. The brush holder e pivotted at d to the spark arm B
and is acted upon by a spring 9 tending to keep it in the horizontal position shewn
in which it makes contact with the lamp.
When, for the purpose of lighting the lamp, the trigger or spark arm B is raised,
the frictional contact between the brush ƒ and the lamp burner tends to keep the
brush back, maintaining the contact, so that its holder turns on its pivotted
connection with the spark arm against the action of the spring y as the arm is
raised. By the movement of the latter, a projecting edge h thereof is brought in
contact with the before mentioned spring contact plate b, and thus by making this
second contact the battery circuit is momentarily closed; but this closing is only
momentarily effected, as immediately afterwards the spring of the brush over-
comes the resistance of its contact and throws the brush holder up into its original
position on the spark arm B, thus breaking the contact with the lamp, and
consequently interrupting the battery circuit again. By this interruption a high-
tension current in the secondary circuit of the induction coil is produced the leads
of which are brought up to contacts at the lamp burner, so as to produce a spark
which ignites the lamp. On the spark arın being finally raised to the vertical
position, its projecting edge comes out of contact with the spring contact plate b
again, and thus both contacts of the circuit are broken.
h
On turning down the spark arm B again, its projection
first makes contact
with the spring contact 6 and then breaks that contact again, and as it is only after
this that the brush makes contact with the lamp again, it will be seen that at no
time during this movement is the circuit closed.
The peculiarity in the above described construction whereby the spark arm B
only makes contact with the battery circuit at the moment when the spark is to be
produced, all danger of accidental ignition and possible explosion of the liquid
contained in the lamp is avoided, as without this precaution it might happen that
during the filling of the lamp an accidental connection of the lamp body with the
battery circuit and consequent closing of this through the spark arm might occur,
producing a spark and consequent ignition.
Figures 4 and 5 shew a vertical section and sectional plan of a modified con-
struction adapted for fixing against a wall. In this arrangement the induction
coil J and sparking arm B, are separate from the lamp L, which for the purpose
of ignition is inserted into a socket L' carried by the casing that contains the
sparking arm. This is pivotted at B¹ and has a tail B' carrying a contact piece B³
that is adapted to make contact with an insulated contact screw m connected to the
one pole of a battery. The arm B carries the contact brush fin a socket_e,
which brush makes contact with the lamp body when this is inserted into the
socket L' as shewn. When the lamp is first withdrawn from the socket the rim of
the burner nozzle draws down the brush and with it the arm B, thereby causing
the contact piece B' to make contact with m and thus closing the circuit, so that
when on the farther downward motion of the lamp the brush fis liberated and the

page_text: arm B is brought back to its original position by the spring n, thus breaking the
battery circuit, a spark is produced by the induction coil, and the lamp is ignited.
As before, the spark arm B is maintained out of contact with the circuit at all
times except when the lamp is to be ignited, as on the re-insertion of the lamp into
the socket the nozzle of the latter makes contact with the brush, but does not cause
the arm B to make contact with the screw m.
Figure 6 shews a modified construction of the arrangement at Figures 1 to 3, in
which instead of connecting the induction coil J in the lamp body A and the
contact spring b, permanently with the battery, the wires of these terminate at
contact plates k, l, fixed on the insulated hottom of the lamp-body and this is, for
the purpose of ignition, fitted into a socket having corresponding contact
plates that are connected to the battery, so that the induction coil J, and
contact bare coupled up with the battery on bringing the plates k, l, in contact
with k¹ l¹.
Any source of electric current, whether of high or low tension can be employed
for working the apparatus; as the circuit is interrupted at all times except when
igniting the lamp; the consumption of current and the wear of the induction coil
through heating is very slight.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
An electrical igniting apparatus wherein the spark arm B or equivalent part of
the electric circuit that produces the igniting spark is constructed with at least
two interruptions of the circuit so arranged that on actuating the same for
producing a spark the arm is made to close the one contact only the moment before
the brush or equivalent device constituting the second contact is caused to break
such contact for producing the spark, the first named contact being broken again
immediately after the spark has been produced substantially as described.
Deted this 18th day of September 1895.
ABEL & IMRAY,
Agents for the Applicants.