Improved Appliance for Igniting and Extinguishing the Flames of Gas Burners.
Year: 1898

page_text: Date of Application, 25th Mar., 1898
Complete Specification Left, 2nd Nov., 1898-Accepted, 17th Dec., 1898
Improved Appliance for Igniting and Extinguishing the Flames of
Gas Burners.
I, GEORG LENTSCHAT, of No. 3, Gereon-mühlengasse, Cologne, Germany,
Electrical Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to an appliance to gas burners for effecting the ignition
and extinguishing of gas flames from a distance, in which the gas supply to the
burner closed by means of a rotary slide which is at the same time formed as
a ratchet wheel and is actuated by means of a pawl carried by the reciprocating
armature of an electromagnet in such manner that by the closing of a contact
on an electric circuit, the slide is turned through a certain angle and is thereby
made either to open or close a gas channel leading to the burner.
The present improvement relates to a special construction of the electromagnet
armature, whereby the certainty of the action of the appliance is increased as
also the construction thereof is considerably simplified, and the expenditure of
electric current is lessened.
I will describe the said improved construction with reference to the accom-
panying drawings, in which Fig. 1 shews a vertical section and Fig. 2 a plan
with the top of the casing removed.
D is a hermetically closed casing which is connected by the nozzle Z to the
gas supply pipe while the gas burner is fixed to the nozzle A.
The nozzle Z opens freely into the casing D, while nozzle A is closed at its
opening into the casing by means of a plug having two or more gas supply
channels C on which fits the revolving slide provided with perforations which
in certain positions of the slide come over the channels C; the slide has its
periphery formed as a ratchet wheel, with the teeth of which gears a pawl K
pivotted on a pin carried by the iron armature disc E. The latter, is freely
pivotted on the pin I that forms the pivot of the slide S. Between the slide S
and the armature E is a small bow spring F serving to press the slide against
the face of the plug. In addition there is attached to the head of the pin I
the inner end of a spiral spring H, the outer end of which is attached to the
armature E, so as to tend to bring it into a certain position of rest, when
the action of the spring is not overcome by an opposite force. The armature, the
form of which is shewn at Fig. 2, has four radial projections on which act the
four pole pieces of the four electromagnets M M. The spring H is so adjusted
that in the position of rest of the armature E its projections are a certain dis-
tance away from the several pole pieces of M M, so that when the electromagnets
are excited, they cause the armature to turn in attracting its projections,
thereby overcoming the action of the spring.
In order to prevent the projections of the armature E from adhering to the
pole pieces of the electro magnets, or, when being moved back by the spring H,
from being brought too close to the pole pieces behind them, two stops G and L
are provided, which limit the armatures motion.

page_text: For effecting the closure of the magnetic circuit the four electromagnets are
fixed to four bent-up ears on the periphery of an iron plate R fitted within the
casing D, and serving to carry the electromagnets.
The action of the above described appliance is as follows:
The burner is provided with a small lighting jet which burns continuously.
If the lamp is to be lit an electric current is passed through the windings of
the electromagnet; tho pole pieces attract the projections of the armature so as
to turn this through a certain angle on the pin I whereby the holes in the slide
are brought over the gas supply channels C.
When the electric circuit is broken, the spring H causes the armature E to
turn back to its position of rest leaving the slide S in the position described.
On the circuit being again closed for extinguishing the lamp, the armature
is again moved through the same angle as before, thereby turning the slide so
as to bring its holes into an intermediate position between the gas supply
channels C, so that these are now closed by the slide.
Dated this 25th day of March 1898.
ABEL & IMRAY,
Agents for the Applicant.
Improved Appliance for Igniting and Extinguishing the Flames of
Gas Burners.
I, GEORG LENTSCHAT, of No. 3, Gereon-muhlengasse, Cologne, Germany,
Electrical 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 appliance to gas burners for controlling the supply
of gas thereto from a distance, in which the gas supply to the burner is closed
by means of a rotary slide which is at the same time formed as a ratchet wheel
and is actuated by means of a pawl carried by the reciprocating armature of an
electromagnet in such manner that by the closing of a contact on an electric
circuit, the slide is turned through a certain angle and is thereby made either
to open or close a gas channel leading to the burner.
The present improvement relates to a special construction of the electromagnet
armature, whereby the certainty of the action of the appliance is increased as
also the construction thereof is considerably simplified, and the expenditure of
electric current is lessened.
I will describe the said improved construction with reference to the drawings
accompanying my Provisional Specification, in which Fig. shews a vertical
section and Fig. 2 a plan with the top of the casing removed.
D is a hermetically closed casing which is connected by the nozzle Z to the
gas supply pipe while the gas burner is fixed to the nozzle A.
The nozzle Z opens freely into the casing D, while nozzle A is closed at its
opening into the casing by means of a plug having two or more gas supply
channels C on which fits the revolving slide S provided with perforations which
in certain positions of the slide come over the channels C; the slide has its
periphery formed as a ratchet wheel, with the teeth of which gears a pawl K
pivotted on a pin carried by the iron armature disc. E. The latter is freely
pivotted on the pin I that forms the pivot of the slide S. Between the slide S
and the armature E is a small bow spring F serving to press the slide against
the face of the plug.

page_text: In addition there is attached to the head of the pin I the inner end of a spiral
spring H, the outer end of which is attached to the armature E, so as to tend to
bring it into a certain position of rest, when the action of the spring is not over-
come by an opposite force.
The armature, the form of which is shewn at Fig. 2, has four radial projections
on which act the four pole pieces of the four electromagnets M M.
The spring H is so adjusted that in the position of rest of the armature E its
projections are a certain distance away from the several pole pieces of M M, so
that when the electromagnets are excited, they cause the armature to turn in
attracting its projections, thereby overcoming the action of the spring.
In order to prevent the projections of the armature E from adhering to the
pole pieces of the electromagnets, or, when being moved back by the spring H,
from being brought too close to the pole pieces behind them, two stops G and L
are provided, which limit the armature's motion.
For effecting the closure of the magnetic circuit the four electromagnets are
fixed to four bent-up ears on the periphery of an iron plate R fitted within the
casing D, and serving to carry the electromagnets.
The action of the above described appliance is as follows:-
The burner is provided with a small lighting jet which burns continuously.
If the lamp is to be lit an electric current is passed through the windings of
the electromagnet; the pole pieces attract the projections of the armature so as
to turn this through a certain angle on the pin I whereby the holes in the slide
are brought over the gas supply channels C.
When the electric circuit is broken, the spring H causes the armature E to
turn back to its position of rest, leaving the slide S in the position described.
On the circuit being again closed for extinguishing the lamp, the armature
is again moved through the same angle as before, thereby turning the slide so
as to bring its holes into an intermediate position between the gas supply
channels C, so that these are now closed by the slide.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is:-
In an appliance for admitting and cutting off the gas supply to a burner of
the kind herein referred to, the combination of the perforated rotatable slide,
that alternately opens and closes the gas outlet of the casing, with an armature
rotatably mounted on an axis coincident with that of the disc and acted upon on
the one hand by an electromagnet so arranged as to impart a partial rotation
thereto in one direction when a current is passing, and on the other hand by a
spring tending to turn the armature back again, such partial rotation of the
armature being imparted to the perforated disc by a ratchet connection between
the two, substantially as described.
Dated this 2nd day of November 1898.
ABEL & IMRAY,
Agents for the Applicant.