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
PROVISIONAL SPECIFICATION.
Improved Appliance for Igniting and Extinguishing the Flames of
Gas Burners.
I, GEORG LENTSCHAT, of No. 3, Gereon-mühlengasse, Cologne, Germany, Elec-
trical 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 a rotatable slide, the
periphery of which is formed with ratchet teeth has a series of holes formed
through it which on turning the slide by a step by step ratchet motion are alter-
nately brought to a position over gas supply passages so as to admit gas to the
burner, where it is ignited by a permanent igniting jet, and to an intermediate
position between such gas passages, so that the supply is cut off.
The present invention relates to a construction of the said rotary slides, where-
by these are provided with different numbers of the said holes so that of a group
of burners, some will be ignited by the rotation of the slides while others will not
be ignited.
I will describe the said improvement with reference to the accompanying
drawing in which Fig. 1 shews a vertical section of the said appliance and Fig. 2
a plan with the top of the casing removed. Figs. 3 and 4 shew plans of rotary
slides with different arrangements of the holes.
A hermetically closed casing a is attached to a gas supply pipe by means of
a nozzle b, the casing being always filled with gas, which escapes through a small
hole c and pipe to a small continuously burning igniting jet; the ignition may
however be effected by any other known means such as by an electric current &c.
Within the casing a is a two-limbed magnet d in front of whose poles is
mounted a pivotted armature f which, when the magnet is not excited is kept
away from the latter by means of a spring m. The opening and closing of the
gas supply to the burner, which is fixed to the nozzle is effected by a rotary
slide g having ratchet teeth at its periphery, and which has a number of per-
forations arranged in a circle, the number of which is half that of the ratchet
teeth. The slide is pivotted on a pin screwed into a plug fitting into the nozzle
and having a number of gas supply passages 1. To the armature f is pivotted
a ratchet pawl k which is kept by a spring o in engagement with the ratchet
teeth. At each closing of an electric circuit including the electromagnet, and
consequent attraction of the armature, the pawl k turns the slide 9 through a
distance equal to one tooth, thereby bringing the holes over the channels l,
so that gas can then pass to the burner where it is lit by the igniting flame,
at the next closing of the circuit the slide is again turned in the same direction
so as to bring the holes in an intermediate position between the channels 1, so
that these are now closed and the gas flame is extinguished.
For street lamps or for the lighting of large localities it is desirable that the
lamps should be capable of being lit or extinguished consecutively or in groups}
for this purpose the following arrangement is employed.

page_text: If for example all lamps are to be simultaneously lit but extinguished conse-
cutively in two groups, the slides g of all the igniting appliances of the first
group have only one hole h for every three teeth, as at Figure 3, so that a hole h
is brought over a channel only' at every third closing of the circuit, so that
the gas can pass to the burner.
The slides of the appliances on the second group have two holes for every
three teeth, so that after two igniting positions of the slide, there follows an
extinguishing position, as at Fig. 4.
This arrangement of the slides operates as follows:
Assuming all the appliances to be in such a position that on closing the
circuit, whereby all the slides are turned one tooth, all the lamps are ignited,
then on the following closing of the circuit, the appliances of group I will have
their channels closed by their slides, so that these lamps will be extinguished.
In group 2 however, the second set of holes h (Figure 4) will come over the
channels so that these lamps will continue to burn. On the next closure of
the circuit, the lamps of group 2 will also be extinguished by the imperforate
portions of the slides passing over the channels 7. On the following closure of
the circuit, all the lamps will again be lit.
If it be required, to extinguish more than two groups of lamps successively
the number of holes in the slides are increased for each successive group.
In order to effect the successive group-wise ignition and the simultaneous
extinction of the lamps, the rotary slides are arranged in the reverse position to
that above described, that is to say, the group that is to be first ignited has the
rotary slides with the greatest number of holes, and the last group those with
the smallest number.
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-mühlengasse, Cologne, Germany, Elec-
trical 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 admitting and cut-
ting off the gas supply of thereto from a distance in which a rotatable slide, the
periphery of which is formed with ratchet teeth, has a series of holes formed
through it which on turning the slide by a step-by-step ratchet motion
are alternately brought to a position over gas supply passages so as to admit
gas to the burner, where it is ignited by a permanent igniting jet, and to an
intermediate position between such gas passages, so that the supply is cut off.
"The present invention relates to a construction of the said rotary slides, where-
by these are provided with different numbers of the said holes so that of a group
of burners, some will be ignited by the rotation of the slides while others will not
be ignited.
I will describe the said improvement with reference to the drawings accom-
panying my Provisional Specification, in which Fig. 1 shews a vertical section
of the said appliance and Fig. 2 a plan with the top of the casing removed,

page_text: Figs. 3 and 4 shew plans of rotary slides with different arrangements of the
holes.
A hermetically closed casing a is attached to a gas supply pipe by means of
a nozzle b, the casing being always filled with gas, which escapes through a small
hole c and pipe to a small continuously burning igniting jet; the ignition may
however be effected by any other known means such as by an electric current &c.
Within the casing a is a two-limbed magnet d in front of whose poles is
mounted a pivotted armature f which, when the magnet is not excited, is kept
away from the latter by means of a spring m. The opening and closing of the
gas supply to the burner, which is fixed to the nozzle i, is effected by a rotary
slide having ratchet teeth at its periphery, and which has a number of per-
forations h arranged in a circle, the number of which is half that of the ratchet
teeth. The slide is pivotted on a pin screwed into a plug fitting into the nozzle
and having a number of gas supply passages 7. To the armature f is pivotted
a ratchet pawl k which is kept by a spring o in engagement with the ratchet
teeth. At each closing of an electric circuit including the electromagnet, and
consequent attraction of the armature, the pawl turns the slide 9 through a
distance equal to one tooth, thereby bringing the holes h over the channel 7,
so that gas can then pass to the burner, where it is lit by the igniting flame;
at the next closing of the circuit the slide is again turned in the same direction
so as to bring the holes in an intermediate position between the channels 1, so
that these are now closed and the gas flanie is extinguished.
For street lamps or for the lighting of large localities it is desirable that the
lamps should be capable of being lit or extinguished consecutively or in groups;
for this purpose the following arrangement is employed.
If for example all lamps are to be simultaneously lit but extinguished conse-
cutively in two groups, the slides g of all the igniting appliances of the first
group have only one hole h for every three teeth, as at Figure 3, so that a hole h
is brought over a channel only. at every third closing of the circuit, for the
gas to pass to the burner.
The slides of the appliances on the second group have two holes for every
three teeth, so that after two igniting positions of the slide, there follows an
extinguishing position, as at Fig. 4.
This arrangement of the slides operates, as follows:
Assuming all the appliances to be in such a position that on closing the
circuit, whereby all the slides are turned one tooth, all the lamps are ignited,
then on the following closing of the circuit, the appliances of group I will have
their channels closed by their slides, so that these lamps will be extinguished.
In group 2 however, the second set of holes h (Figure 4) will come
channels so that these lamps will continue to burn. On the next closure of
the circuit, the lamps of group 2 will also be extinguished by the imperforate
portions of the slides passing over the channels 7. On the following closure of
the circuit, all the lamps will again be lit.
over the
If it be required to extinguish more than two groups of lamps successively
the number of holes in the slides are increased for each successive group.
In order to effect the successive group-wise ignition and the simultaneous
extinction of the lamps, the rotary slides are arranged in the reverse position to
that above described, that is to say, the group that is to be first ignited has the
rotary slides with the greatest number of holes, and the last group those with
the smallest number.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
-
In appliances for admitting and cutting off the gas supply to gas burners of
the kind herein referred to, the arrangement of a series of such appliances con-
trolling different burners or groups of burners in such manner that the rotatable

page_text: disc of an appliance controlling one burner, or group of burners is formed with
a number of holes for admitting the gas supply, different from the number of
holes of the disc of an appliance controlling another burner or group of burners,
so that on actuating the said appliances by means of one and the same electric
circuit the burner or set of burners belonging to the one appliance will be either
ignited or extinguished, while that or those of the other appliance will remain
unaffected, substantially as described.
Dated this 2nd day of November 1898.