San Marcos free press. [volume] (San Marcos, Tex.) 1877-1892, 1878-11-16

is by introducing suitable resistance in
the local line. So powerful are the mag
nets attached to this instrument that
the party. while observing it, were COM
PEELED to leave their watches in another
room, else they would have been mag
netized. Mr.. Edison believes that no
can so assist Mr.. Wallace in perfecting
the telemachon that power may he trans.
mitted from one point to another as
though it were n telcgraphic message
Already by means of this instrument.
Mr.. Wallace is enabled to transmit the
power of the Naugatuck river quarter
of a mile. The power Of this stream is
great enough to drive the ponderous
machinery of the Wallace factory, where
800 men are employed. A series of OK
periments with Reinstatement has shown
; TINT in the transmission OF this enormous
power by electricity only 20 per cent. is
lost. In this instrument the electricity
is produced by the Wallace dynamo
electric machine, no battery being used
-Four large electromagnetic are placed
with their poles facing each other On
an axis parallel with and situated be-
tween them are discs of iron CARRYING
upon its opposite faces row of electro
magnets, thirty in number, on each face,
whose poles, facing outward, revolve as
close aspossible to the poles of the large
magnets, called the field of force. On
the same axis, but outside of these discs,
strips of copperare placed equal in num-
Der to the magnets on the discs, each
strip of copper being connected to one
end of the wire on the magnet. The
other end of the wire goes to the next
strip. Each strip, therefore, is connect
ed to the last end of the coils and to the
first end Of that Immediately following
it. When the disc, with its magnets, is
revolved by any power, the weak mag
netism remaining in the iron itself gen.
crates current of electricity in the wire
surrounding these magnets. In virtue
of the principle discovered by Faraday,
that whenever a conducting wire is
moved in the vicinity of a magnet, a cur
rent Of electricity is caused to circulate
in that wire, the feeble current thus
generated flows around the magnets of
the field of force, increasing their mag
netism. This increased magnetism re-
acts upon the revolving magnets, in
creases the electric current. and SO, al-
ternately, until the magnetism attains o
maximum, and that maximum is gener.
ated in the wires of the revolving mag
nets. This current bears for each per-
fectly definite ratio to the power con-
sumed, and they are capable of convert
ing so per cent. of the power applied
into electricity. The electric current
generated is carried by two copper wires
to second machine, the telemachon.
This effects the reverse operation--that
is to say, the reconstruction of the e'ec-
tricity into mechanical power. The
telemachon consists of q field of force
and a revolving armature. This field OF
force consists of twelve large electro
magnets in two sets of six each, the
poles of each set facing each other, and
connected together by heavy bands or
bridges. In tho space inclosed by these
magnets, and parallel with them, is the
armature axis supporting an armature
consisting of ring of iron wire serving
as core, around which is wound an in
sulated copper wire in two series of fifty
coils. The ends of these wires come out
alternately to the right and left of the
armature, and are connected with two
break pieces upon their axis. Six springs
or brushes of copper wire press upon
these break pieces, each pair of brushes
facing each other, and opposite a pair OF
magnets in the field of force. The cleo
trio current entering the machine press
es round the field Of force and magnet
ICES the magnets. At the same time it
passes through the arnature, magnetic
ing that, so that the poles of the anna
ture nearest the poles OF the field mag
nets are of the opposite name. In con-
sequence of this, the field of force mag
nets attract the poles of the ar1matrre
and cause the armature to move. But
| fhn rnnfinn in its now position brings