Improvements in Regulating Apparatus for Electric Arc-light Lamps.
Year: 1889

page_text: Date of Application, 16th July, 1889
Complete Specification Left, 16th Apr., 1890-Accepted, 5th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in Regulating Apparatus for Electric Arc-light
Lamps.
I EMIL FISCHINGER, Electrical Engineer, of Niedersedlitz near Dresden in the
Kingdom of Saxony, German Empire, do hereby declare the nature of this invention
to be as follows:-
In the regulating apparatus for arc light lamps constructed according to the
present invention, two electro magnets are employed, the winding of which magnets
is made of fine wire, in derivation from, or parallel to the main circuit, and in com-
bination with these electro magnets, mechanical devices are employed, by which the
armatures of the said electro magnets will cause the approach of the two carbons for
making contact, the separation of the carbons for creating the arc, and the regulation
of the position of the two carbons relatively to each other, in a quiet and accurate
manner.
The lamp is provided with two movable carbon carriers by which the arc is
maintained at the same place during the consumption of the carbons.
The carbon carriers are suspended by a cord which runs over a worm wheel pulley.
This pulley is rotated by a worm on the same spindle as a friction wheel or disc,
which receives its motion, through a frictional sliding pawl or shoe, from the vibrating
armature of an electro magnet, which magnet is, as above stated, in a shunt circuit.
from the main circuit. This armature is provided with an antagonistic spring capable
of adjustment, and also with a contact spring, also capable of adjustment. The
sliding pawl or frictional shoc above mentioned, which forms an essential part of the
present improvements in the regulating mechanism of the are lamp, is pivoted to a
lever which, at its other end, is pivoted to the armature of the electro magnet.
Around the pin which carries this lever, a spring coil is laid, one end bearing against
the said lever. The position of the pivot joints relatively to the friction wheel or disc,
will ensure an energetic and quiet rotation of the friction wheel.
The worm wheel is carried by the horizontal arm of a bell crank lever, the vertical
arm of which lever forms an armature, which armature is acted on by a polar
extension of a second electro magnet, for the purpose of striking the arc,-this
second electro magnet being in derivation from, or parallel shunt with, the main
circuit.
The action of the lamp is as follows:-
If the carbons are separated from each other, and an electric current is sent through
the lamp, the armature of the second electro-magnet is energetically attracted, and
thereby the worm wheel is raised; at the same time, the first electro-magnet, by its
action upon the frictional feed mechanism, will cause an approach of the carbons,
until they make contact, if such contact is not already made by the movement of the
second armature. At the moment of contact between the carbons, nearly the entire
current is, by the decrease of resistance thus created, sent through the carbons, and
the current through the electro magnets being thereby weakened, the spring will
withdraw the armaturo of the second magnet, the worm wheel at the same time
dropping down, so that the carbons will separate from each other, so as to strike
the arc.
As the length of the arc increases by the consumption of the carbons, the resistance
in the main circuit will be increased, and the current thereby increasing in the electro
magnets, will cause an approach of the carbons by the increased attraction of the
armature of the second magnet, as well as by the vibrating motion of the armature of
the first magnet, through the frictional feed mechanism.
Dated 16th day of July 1889.
NEWTON & SON,
Agents for the Applicant.

page_text: Improvements in Regulating Apparatus for Electric Arc-light
Lamps.
I EMIL FISCHINGER, Electrical Engineer, of Niedersedlitz, near Dresden, in the
Kingdom of Saxony, German Empire, 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 regulating apparatus for arc-light lamps constructed according to the present
invention, two electro-magnets are employed, the winding of which magnets is made
of fine wire in derivation from, or parallel to, the main circuit, and in combination
with these electro-magnets, mechanical devices are employed by which the armatures
of the said electro-magnets will cause the approach of the two carbons for making
contact, the separation of the carbons for creating the arc, and the regulation of
the position of the two carbons relatively to each other, in a quiet and accurate
manner.
Fig. 1 shows the improved regulating device in front view.
Fig. 2 is a side view of the same, both Figures partly in section, whereas
Figs. 3 and are ground plans.
The lamp is provided with two movable carbon carriers, by which the arc is
maintained at the same place during the consumption of the carbons.
The carbon carriers are suspended by a cord which runs over a worm wheel pulley e.
This pulley e is rotated by a worm n, which is on the same spindle with a friction
wheel or disc u. This friction wheel or disc receives its motion through a frictional
sliding pawl or shoe c, the motion of which is derived from the vibrating armature q
of the electro magnet p, which magnet is, as above stated, in a shunt circuit from
the main circuit. This armature is provided with an antagonistic spring v, capable of
adjustment, and with a contact spring a, also capable of adjustment, and constituting
an ordinary make and break. The sliding pawl or frictional shoe c, which forms an
essential part of the present improvements in the regulating mechanism of the are
lamp, is pivotted at to the lever w, which, at its other end, is pivotted to a posts,
carried by the armature . Around the post s, which carries the lever w, a spring
coil is laid, acting with one end against the said lever. The positions of the pivots
and relatively to the friction wheel u, will ensure an energetic and quiet rotation of
the friction wheel u.
The worm wheel e is carried by the horizontal frame f, forming part of a bell crank
lever pivotted at h, the vertical part of which lever forms an armature g, which is
acted on by the polar extensions k of a second electro-magnet i, for the purpose of
striking the are, said electro-magnet i being in derivation from, or parallel shunt
with, the main circuit.
The action of the lamp is as follows :-
If the carbons are at a distant position from each other, and an electric current is
sent through the lamp, the armature g of the electro-magnet i is energetically
attracted, and thereby the worm pulley e is raised, while at the same time the electro-
magnet p, by its action upon the frictional feed mechanism, will cause an approach of
the carbons, until thoy make contact, if such contact is not already made by the
movement of the armature g.
At the moment of contact between the carbons, nearly
the entire current, by the decrease of resistance thus created, is sent through the
carbons, and the current through the electro-magnets being thereby weakened, the
spring m, in its antagonistic action against the attraction of the magnet i, will be
enabled to withdraw the armature g; the worm wheel e, at the same time, dropping
down, the carbons will part or separate from each other for the proper length of the
voltaic arc.
When this arc is lengthened by the consumption of the carbons, the resistance in
the main circuit will increase, and the main current will be reduced. The current in
the electro magnets being proportionately augmented, will cause an approach of the

page_text: carbons by the increased attraction of the armature g by the magnet i, as well as by
the vibrating motion of the armature q, transferred to the frictional device or
mechanism.
From the foregoing it will be understood, that both electro-magnets contribute to
the regulation of the lamp, the electro-magnet i, besides forming or striking the arc,
performing what might be called the coarse regulation, and the electro-magnet p, the
finer and more accurate adjustment of the carbons.
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 :-
:-
The automatic regulating device for electric arc lamps arranged and operating
substantially as described and shewn in the drawing.
1
NEWTON & SON,
Agents for the Applicant.