Improvements in Electric Lighting and Extinguishing Apparatus for Gas Burners.
Year: 1893

page_text: Date of Application, 28th Nov., 1893-Accepted, 3rd Feb., 1894
CUDIT DID
Improvements in Electric Lighting and Extinguishing Apparatus
for Gas Burners.
1, ERIK ORLING of 55 Karlävagen, Stockholm in the Kingdom of Sweden,
Electrician, do hereby declare the nature of this invention, and in what manner.
he same is to be performed, to be particularly described and ascertained in and
by the following statement:-
This invention relates to improvements in electric lighting and extinguishing
apparatus for gas burners.
The said invention comprises an electro magnetic armature, which when attracted
opens a spark generating contact placed near the gas burner, and at the same time,
by means of a pawl, turns the plug of the gas cock which is provided with a ratchet
wheel.
The objects of the present improvements are:-To effect an accurate movement
of the plug, so that the latter will never remain in the half closed or half open
position; the combination or arrangement of the apparatus, in such a way, that the
manufacture is substantially facilitated; the arrangement of the movable electrode
in two parts; the fastening of the stationary contact piece belonging to the said
contact in such a manner that there will be no fear of its loosening by reason of
the heat; and lastly so arranging the apparatus that a number of gas flames may
be lit or extinguished one after the other by the use of a single battery..
In the accompanying drawings
Figures 1 and 2 show front elevations of the apparatus attached to a gas burner
with the armature in different positions.
Figure 3 is a side elevation of Figure 1.
Figure 4 is a vertical section of a modification drawn to an enlarged scale with
the invention applied thereto.
Figure 5 is an horizontal section on the line y y of Figure 4, and
Figure 5A is a plan thereof.
Figure 6 shows a further modification drawn to an enlarged scale.
Figure 7 is a detail of the same and
Figure 8 is a plan of Figure 6 showing the connections.
The apparatus comprises two electro-magnets a, only one of which is visible on
the drawing, the one being placed behind the other. The armature b has an upright
arm 6' to which the pawl 6 is fixed, the said pawl being in engagement with the
toothed wheel c of the plug.
When the armature is raised the plug is turned and the sliding bar g¹ is lifted,
the said bar constitutes the one of the contacts and rests with its upper crooked
end against the stationary contact h. The gas when turned ou is lit by the spark
produced at the opening of the contacts. In order that the said turning of the
plug may be exactly determined, the armature is provided with a second arm i
Oscillating with the armature and therefore in the ascending movement of the latter
engaging by its upper end with one of the teeth of the wheel c and preventing
further movement of the same. Figure 3 represents an edge view of the arm i.
The inclination of the teeth of the wheel c is such, that it coincides with the curve
described by the top of the arm i so that the wheel is still held even though the
armature vibrates without falling. The stop formed by the arm i is thus very
reliable and easy to adjust, as for that purpose it is only necessary to bend the arm
or the end thereof: a little. In order to prevent the plug from returning when the
armature is falling, there is provided on the opposite side of the same with relation
to the arm i, a spring hook i likewise engaging with the toothed wheel c. According
01....מ

page_text: to the drawing the arms b¹ and i are made in one piece, but it is evident that the
arm i can consist of a separate piece fixed to the armature.
In Figure 4 I have shown how the entire apparatus is put together. The tubular
piece A constitutes the body to which the other parts are fixed. The bottom
disc is passed upon the lower end of the pipe A, and tightened against a shoulder
on the same by means of the sleeve k¹ which is designed to be screwed upon the
gas pipe. On the top of the pipe is screwed the socket / carrying the burner and
retaining the disc m and the disc m' in place the latter resting against a shoulder
upon the piece A and the former being pressed by the socket against a ring m³
placed between the two discs. The said discs m and m' constitute supports for the
movable electrode which is made in two parts g¹ g' the upper one being guided in
the shell m fixed to the disc m and the lower one in the shell m' fixed to the disc m¹.
A spring m placed in the shell m³ and pressing against a shoulder on the lower end
of the contact piece g' retains the said part against the part and a pin m
traversing a slot in the shell m³ prevents the part g' from turning. In order to
prevent the discs k and m¹ from turning in the pipe A this latter is provided with
longitudinal slots n, into which shoulders n' on the discs engage, see Figure 5. The
whole is enclosed in a casing B tightened against the discs and placed on from
above. The electrode has hitherto been fixed to the gas pipe corresponding to
the socket by means of a ring gripping the said gas pipe, but this has proved to
be unreliable as the ring expands in consequence of the heat and slides down the
pipe. The electrode is therefore in the present apparatus fixed by means of a
ring a gripped between the socket and the disc m. Over and under this ring
are placed insulating plates a³, the ring being in the usual manner connected with
the circuit by means of a clamping screw, Figure 5. The ring, which may be
open in order that it may be inserted from the side, has an upright arm, constituting
the said electrode h.
The above described apparatus has in general for its purpose to light a single
gas flame for instance one in a hall or in a passage. For each apparatus there is
thus an electric battery and a button attached at some suitable place on the wall.
But it is very easy to arrange the apparatus so that the same battery can serve to
light and extinguish a number of gas flames in succession. An arrangement_
suitable for that purpose is shown in Figures 6, 7, 8. To the outer part of the plug
there is fixed in addition to the toothed wheel c an eccentric d' turning with the
plug. Four clamping screws v v¹ and v² v³, are also provided from which the
conducting wires extend. From the screws v v¹ two springs d' d³ project upwards
and are provided with a pin d' and d respectively pressing against the eccentric.
Above the electro-magnets other springs o' os o are placed horizontally and fixed
to the electro-magnets by means of a screw. An electric current traversing the
screw passes through the springs d² and o². As the latter screw is connected with
the coil of the electro-magnets the current passes through that coil whereby the
armature will be attracted and the plug and the eccentric turned. The pin d'
after having passed the highest point of the excentric falls down towards the lowest
one and at the same time the spring d will press against the spring o' instead of
against the spring o' and the electric current will then pass through the spring o
which is connected with the screw and through the circuit to the next
apparatus.
The same result is obtained, if the electric current passes through the screw v.
By means of the eccentric a change of contact is obtained, so that the current
passes first through the springs do and the electro-magnets and then through the
springs do and the screw v³ to the next apparatus.
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 :-
1. In an apparatus for lighting and extinguishing gas jets provided with electro-
magnets and an armature the arrancament of an

page_text: any of its parts, which arm, when the armature turns the plug of the gas-cock,
finally, engages in the ratchet wheel of the plug and thus prevents its further
motion.
2. The arrangement of a spring hook (i) engaging in the ratchet wheel of
the plug and retaining the said wheel when the armature is in its normal position.
3. The combination of the different parts constituting the improved apparatus,
that is to say, the parts (a k¹ 1 km m² and m³) respectively.
4. The arrangement for the fastening of the fixed electrode (Figure 4) consisting
of the ring (a) passing upon the gas-pipe or socket and clamped between the fixed
parts on the pipe or a shoulder on the pipe itself and the socket screwed on the end
of the said pipe, the said ring being insulated and supporting the electrode.
5. The arrangement of the movable electrode consisting of two parts (9' and 9³),
the upper one of which is inserted in a shell and surrounded by a spring which
retains it in its depressed position.
6. "The arrangement shown in Figures 6-8, consisting of the eccentric (d¹) and the
springs (d³, do¹ o o³) for the purpose of enabling a number of gas flames to be
successively lit or extinguished by means of one battery.
Dated this 28th day of November 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.