I claim invention—
1. The combination, with the carbon-hold
ers, two magnets, one the main circuit
and the other shunt-circuit, and arma
ture-lever draw the arc, and feeding
mechanism and pole-pieces upon the electro- no
magnets act upon the feeding mechanism,
substantially specified. The combination, with the carbon-hold
ing rod electric-arc lamp, the clamp
E, lever spring r2
, armature-lever and
electro-magnets the main and shunt
circuits, respectively, the pole-pieces M3N3
, 125
and armature-segments substantially set
forth. The pole-piece
50 M3attracts the armature and the lateral
pressure causes the clamp grasp the rod
S', and the lever simultaneously moved
from the position shown dotted lines, Fig.3*5,986
slide freely through the same. If, now, the are becomes too
long, the current through the helix less-
sened, and the magnetism the core N3is in
creased the greater current passingthrough 70
the shunt, and this core N3attracting the seg
mental armature lessens the hold the
clamp upon the rodS, allowing the latter to
slide and lessen the length the arc, which j
instantly restores the magnetic equilibrium 75
and causes the clamp hold the rod If
it happens that the carbons fall into contact,
then the magnetism N2is lessened much
that the attraction the magnet will be
sufficient move the armature aand lever 80
so that the armature passes above the nor
mal position, separate the carbons in
stantly; but when the carbons burn away a
greater amount current will pass through
the shunt until the attraction the core 85
will overcome the attraction the core and
bring the armature-lever again into the nor
mal horizontal position,and this occurs before
the feed can take place. This spring preferably adjust-
able. This tube counterbored, seen
to the section Fig. 90
They may Square any other desired
shape, the ends the pole-pieces M3E3being
made correspond shape. The magnetism
of the pole-piece tends hold the lever A
level,or nearly so, the core ISPbeing energized
60 the current the shunt which contains
the helix this position the lever is
not moved ordinary variation the elec
tric current because the armature bis strongly
attracted the magnetism ofe,and these parts
' are close each other, and the magnetism of
• acts right angles the magnetism of
. frame
or arm, extending, preferably, from the core
15 N2
, supports the lever fulcrum-pin, o. These springs '
I may adjusted their pressure the
screw to, and the spring may sustained
upon any suitable support.
Around the carbon-holding rod between
the plates S2
, there atube, which forms
a clamp.
1, the normal position shown full lines,
55 and doingthe link gand lever are raised,
lifting the clamp and rod separating the
carbons and forming the arc.
This lever has hole, through which the
upper end ofthe tubular clamp passes freely,
and from the lever link, the lever
t, which lever pivoted ring upon
2o one the columns S3
. 105
2. that bears upon the
rod atitsupper end and near the middle, and
at the lower end this tubular clamp there
are armature-segmentsr soft iron.
At oneend the lever soft-iron arma
ture block, over the core the helix
30 and there preferably limiting-screw, c,
passing through this armature-block and at
theother end the leverAis soft-iron arma
ture-block, with the end tapering wedge-
shaped, and the same comes close and in
35 line with the lateral projection the core
N2
. 120
4.
The operation ofthese devices asfollows:
In the condition inaction the upper carbon
rests upon the lower one, and when the cur-
V rent turned the electricity passes freely,
by the frame and spring through the rod S
and carbons the coarse wire and helix M,
and the negative binding-post and the
core thereby energized.
3. The segmental arma
ture pieces are shown nearly semicircular.
5. have shown
5 them connected with the upper end the
core the magnet N. The lower ends the cores 1
S
T
2are
made with lateral projecting pole-pieces M3
N:l, respectively, and thesepole-pieces are con
cave their outer ends, and are opposite
40 sides the armature-segments the lower
end the tubular clamp E.the core M'. Hhe combination,with the carbon-holder,
of tubular clamp surrounding the same, an
armature -lever connected said tubular 130 -
clamp, and electro magnets the main and ^
shunt circuits,respectively, and armaťure-seg-. The combination, with the carbon-hold
ers, two magnets, one the main circuit
and the other shunt-circuit, and arma- 115
tnre-lever between two poles such electro
magnets draw the arc, and feeding mech
anism and pole-pieces upon the other two
poles the electro-magnets act upon the
feeding mechanism, substantiallyas specified. This lever has an
openingor bow surrounding the tubular clamp
E, and there are pins pivotal connections
w between the lever and this clamp and
a spring, r2
, serves support suspend the
25 weight the parts and balance the same, or
nearly so. The combination, electric-arc lamp, 95
of the electro-magnets the main and shunt
circuits, respectively, armature-lever and
connection the movable carbon-holder, the
core the shunt-magnet passing across the
end the armature-lever, substantially set 100
forth, that the two magnets act conjunc
tion the armature-lever moving the car
bon form the arc and opposition each
other beyond the normal position the arma
ture-lever, substantially specified
