The Leavenworth weekly times. [volume] (Leavenworth, Kan.) 1870-1880, 1874-04-30
Experiment with Electric Light.

Prof Neri, gave last night, from the cupC-
Ia of st Ingatius College, his promised ex-
hibition of the electric light regulator, by
which a brilliant electric light il evolved.
The light flashing across the sky frst ~ on
ished, then delighted those who were on the
streets at the time. The light is the same as
that which attracts 30 much attention IN
Paris. The machine which produces this
powerful light is in itself curiosity - well
as the model of mechanical ingenuity, being
the largest ard most powerful in Europe or
America. 1t is placed on platform on
wheels, and made like the paddles of steam
ship, having eight fans, except the fans are
stationary in this, each fan having seven
large magnets weighing about fifty pounds
each, and four and quarter inches apart,
thus there are ff,y-six magnets. The axle,
which revolves in the center, has placed On
il % Dobbins or coils. The cells are composed
of a piece of soft iron with silk insulated
copper wire wound around them, and are
made to fit hairs breadth between each of
the magnets. Each OF these coils weighs
about seven pound The axle is worked
by a four horse power engine, and revOlves
the botbfns at 200 times per minute, touch
ing negative and positive magnet eight
times to every revolution Of the axel, thus
creating magnetic current equal TO if net
greater than as obtained from all the batter
les used by all tn Telegraph companies in
this city. This machine was manufactured
by GA Companies 7 Alliance" of Paris,
and cost $4,000 francs. Two large copper
wire are run from this machine to whatever
part of the building generally the cupalo)
in which the 'eleciric-light regulator" Ia
placed. This machine is the invention of
Duboecq Il Co., and has negative and posi-
tive luminous points about two inches apart,
which come together when charged by the
electric fluid, and thus the flash Is obtained.
Behind this machine is placed the reflector,
and within the focus large Fresnel lens
twenty inches in diameter. The lens stands
about twenty-six inches in front of the
electric Light, and receiving its ray,
throws them into parailsi
beam to the great distance Of 200 miles (if
the horizon will permit. These implements
are placed on a circular table, and adjustable
for either high, low, east, west, north, or
so,h, as the operator may desire. The rays
of this light are Illuminating and dazzling
within their range, and cast very heavy sha-
dows-so much so that the email print of the
Ala coaid be read seven blocks off. The
heat is 20 intense as to consume metals, and
copper wire eight feet long, placed on the
insulated poles, and keep at the same dis
lance platina wire at white heat. There
are but four of these large machines in use
one in Russia, one in France, one in the
light house at South Forelsnd. England, and
this one, which is the largest OF the four.
The cost of this machine ard apparatus Ia az
follows: Machine 81. 200; regulator and
mirror. $3.50; incidental expenses, $3.50,
total, S4,2 200. 1t woald be advisable for the
Government to have this machine set on the
Farallones. 10 test its real merit. Father
Neri would be willing, if the Government
would foot the bills.