An Improved Arrangement of Regulating Device for Electric Arc Lamps.
Year: 1890

page_text: Date of Application, 21st Oct., 1890
Complete Specification Left, 24th June, 1891-Accepted, 1st Aug., 1891
PROVIDIUNAL DIFICATION.
An Improved Arrangement of Regulating Device for Electric
Arc Lamps.
I, ALBERT DE PUYDT, Engineer of 21 Rue Nysten, Liège, in the Kingdom
of Belgium, do hereby declare the nature of this invention to be as follows :-
In the annexed drawing:
Fig. 1 is a side view of the regulating device for electric arc lamps;
Fig. 2 is a section of Fig. 1 on the line 1, 2;
Fig. 3 is a top view of the lamp.
In the regulating solenoid E, made of fine German silver wire, both ends of
which are connected to one of the carbons, is adapted an iron tube F, whilst
another iron tube H is suspended within the said solenoid, by means of two flat
springs I, I, the said tube H being moveable in the axis of the solenoid. As the
iron tube H moves it makes or breaks the contact between the two pieces K & K¹.
The piece K is always in electrical connection with the upper carbon.
The support for the solenoid E is of nonmagnetic metal.
A is an electro-magnet formed of thick wire through which circulates the main
current.
B is a clockwork operated by the weight of the upper carbon-holder and
pivotting on an axis D, when the electro-magnet A actuates the armature C secured
upon B.
The spring I is fastened to a moveable piece T which can pivot on an axis T';
by means of a set screw V, the tension of the spring I can be adjusted and thus
more or less resistance can be opposed to the action of the current, thereby
determining the length of the arc.
L is an electro-magnet formed of fine wire, the magnetic circuit of which is
only interrupted between M & M from time to time this magnet attracts the
armature M, M" which is movable on an axis N that is to say the armature is
attracted when the carbons are too far apart and when owing to a strong current
passing through the solenoid, the tube H is drawn sufficiently towards the left to
cause the pieces K and K to come in contact. Upon the armature M', M" is
fastened a stop O for the clockwork; the movement of this armature causes the
clockwork to be put in and out of gear. One end of the electro-magnet L
is connected to the lower carbon and the other end is connected to the piece K¹
above referred to.
UPERATION.
UPERATION.
Let it be supposed that the carbons are in contact with each other at the time
the current is thrown in the lamp; the electro-magnet A will be magnetized, and
will attract the armature C, which latter then causes the clockwork to oscillate
upwardly. The upper carbon fastened to the rack rises, the said rack gearing
with one of the tooth wheels of the clockwork. The separation of the two carbons
being thus produced, the arc will be formed between them.
Suppose now the carbons having been consumed to a certain extent, the
difference of potential between them will increase, so that the regulating solenoid E
will receive the current which is gradually increasing; the tube H will move more
and more to the left, as it is attracted by the solenoid E and by the tube F.
Finally, at a given moment, when the arc is sufficiently great, a contact between
the platinum pieces K & K' will be established, whereby a derived current will
be sent into the electro-magnet L. The electro-magnet L will now attract the
C
.

page_text: armature M¹ M" so as to start the clockwork; the carbons will then approach
each other until the contact between K & K!, has ceased owing to the less great
difference of potential resulting from the approachment of both carbons.
This action takes place each time the arc has become sufficiently great. If the
carbons are not in contact when the lamp is started, the clockwork will have been
liberated first as above mentioned, whereupon the carbons will have been brought
in contact with each other, and then the rest of the operations will take place, as
before mentioned.
The solenoid E is of fine German silver wire and not of brass wire, in order that
the difference of temperature may have less influence upon the regulation of
the arc.
The lower carbon-holder can be movable; it is sufficient that it be guided by
the two vertical columns P & P¹, and that it be suspended to a chain or cord
passing around a pulley placed in the lamp, and fixed by its other end to the upper
carbon-holder; as the latter descends, it would cause the lower carbon-holder
to rise.
The regulating solenoid E might be replaced by a closed electro-magnet having
its armature completely outside or not, but the herein before mentioned arrangement
is preferable.
.
The clockwork might be replaced by a fly-wheel or a cataract, and the device.
for putting the clockwork in and out of the gear might be replaced by a brake.
Finally, the solenoid E might produce two contacts similar to the one described
(K & K the one at the left for causing the carbons to come together and the other
for causing them to separate.
Doted this 21st day of Datchon 1900
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant:**
COMPLETE SPECIFICATION.
An Improved Arrangement of Regulating Device for Electric
Arc Lamps.
I, ALBERT DE PUYDT, Engineer, of 27 Rue Nysten, Liège, Belgium, 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::-
In the drawing annexed to my Provisional Specification:
Fig. 1 is a side view of the regulating device for electric are lamps.
Fig 2 is a section of Fig. 1 on the line 1, 2.
Fig. 3 is top view of the lamp.
In the regulating solenoid E, made of fine German silver wire, is adapted an iron
tube F, whilst another tube H is suspended within the said solenoid by means of
two flat springs I, I', the said tube H being movable in the axis of the solenoid.
As the tube H moves, it makes or breaks the contact between the two pieces K.
& K. The piece K is always in electrical connection with the upper carbon.
The support for the solenoid E is of non-magnetic metal.
A is an electro-magnet formed of thick wire through which circulates the main
current....B is a clockwork operated by the weight of the upper carbon holder and
pivotting on an axis D when the electromagnet A actuates the, armature C secured.
upon B.
The spring I is fastened to a movable piece T which can pivot on an axis T
by means of a set-screw V, the tension of the spring I can be adjusted and thus
more resistance can be opposed to the. action of the, current, thereby. determining
the length of the arc.

page_text: TERATION.
Let it be supposed that the carbons are in contact with each other at the time
the current is thrown in the lamp, the electro-magnet A will be magnetized, and
will attract the armature C which latter then causes the clockwork to oscillate
upwardly. The upper carbon fastened to the rack rises, the rack-gearing with one
of the tooth wheels of the clock-work. The separation of the carbons - being thus
produced, the arc will be formed between them.
Suppose now the carbons having been consumed to a certain extent, the
difference of potential between them will increase, so that the regulating solenoid E
will receive the current which is gradually increasing; the tube H will move more
and more to the left as it is attracted by the solenoid E and by the tube F.
Finally at a given moment when the arc is sufficiently great, a contact between
the platinum pieces K & K will be established, whereby a derived current will be
sent into the electro-magnet L. The electro-magnet L will now attract the
armature M M" so as to start the clockwork; the carbons will then approach each
other until the contact between K & K' has ceased owing to the less great
difference of potential resulting from the approachment of both carbons.
This action takes place, each time the arc has become sufficiently great. If the
carbons are not in contact when the lamp is started, the clockwork will have been
first liberated as above mentioned, whereupon the carbons will have been brought
in contact with each other, and then the rest of the operations will take place as
before mentioned.
The solenoid E is of fine German silver wire and not of brass wire, in order
that the difference of temperature may have less influence upon the regulation of.
the arc.
The lower carbon holder can be movable; it is sufficient that it be guided by the
two vertical columns P & P¹ and that it be suspended to a chain or cord passing
around a pulley placed in the lamp, and fixed by its other end to the upper carbon
holder; as the latter descends it would cause the lower carbon holder to rise.
The regulating solenoid E might be replaced by a closed electro-magnet having
its armature completely outside or not, but the hereinbefore mentioned arrangement
is preferable.
The clockwork might be replaced by a fly-wheel or a cataract and the device for
putting the clockwork in and out of gear might be replaced by a brake.
Finally, the solenoid E might produce two contacts, similar to the one described
(K & K¹) the one at the left for causing the carbons to come together and the
other for causing them to separate.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
A regulator for arc lamps consisting:
1. Of a solenoid E of fine German silver wire communicating with the two
carbons of the lamp and carrying a stationary iron tube F and a movable iron
tube H, the latter being suspended from two blade springs I & I¹, and the

page_text: displacement of which causes the closing or interruption of the current towards
the clectro-magnet I..
2. Of an electro-maguet L subjected to the action of a solenoid or electro-
magnet; the latter only acting by electrical contact, for the regulation of
the arc.
3. Of a device for regulating the length of the arc, the said device being
composed of an adjusting screw V which, by means of the part T, regulates the
tension of the spring I.
Dated this 24th day of June 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.