Wichita eagle., 1888-07-21
Tho aaha Daily Eagle: Saturday aaoruiue Gully H.

piex sending four messages at oneeE, and OF
multiplex sending many telegraphy were
made known. Now it is claimed that such
Improvement has been made BY q United
States army officer, who Is an expert electri-
clan, that one wire VIII suffice for the stimuli
taneons sending and receiving OF a hundred
messages between fifty branch Offices. with
out any Of the messages getting mixed, going
to the wrong addresses, or being understood
at any other points than their individual
ones of Transmission and reception. For this,
the infinitely rapid substitution OF alternate
currents-positive and negatively means
of a disc, in which alternate segments are so
charged, and from which the currents are
taken OF by brushes, constitute the means
employed Another important recent i'm
provement in teiegraphy il the invention OF
method for maintaining Geographic COM
munication between railroad train in rapid
motion and Offices along the line Of road
upon which it is travelling In doing this
the message leaps through the air between
the metallic roof of the moving car In
which the flying Office is established and the
wire stretched along the side of the road
In the application Of electricity to the
movement of railroad trains and cars. the
inventions are numerous In general way
they may be classified under two heads, those
in which the propelling current Is supplied
from storage batteries aboard the cars, and
those in which it is transmitted through the
track or an intermediate third rall from a
generating station and taken up by wire
brushes to the motor on the car. The former
Is the Julien system, already mentioned, and
hardly seems capable at present OF applca-
ton to heavier service than the propulsion OF
single cars, or at most very short trains, on
street railways; to the second class belongs the
Daft system, nnder which railroads are now
very successfully operated in Baltimore and
other cities, as also the electric locomotives
which it is contemplated shall be employed
on the elevated roads of New York. St
Paul has new electric railway of novel con-
/ struction. Its cars are suspended in mid air
from shaped trestle construction, upon a
single track, which carries the electrical
current to the motor with which each car is
supplied The motors are placed directly on
the shafts of the driving wheels over the
cars 1t is represented that on the recent
trials OF the system the cars, heavily laden,
started OFF easily up a 10 per cent grade.
turned sharp curves, were stopped and start
ed again promptly and with ease Electric
railroads have been in operation in Europe
for several years, and in tins one particular
branch of applied electrical science we are
rather behind the times, which is not Ameri
J cas- usual position
MANY OTHER INVENTIONS.
/ Electric motors Of ell sizes, from one cat
up to fifteen horse power, have now come
into general use, are rapidly pushing small
steam engines out Of favor, and are, in fact,
SO much in demand that the manufacturers
of the preferable ones are unable to supply
them as rapidly as they are called for. They
are applied to all sorts of uses, from wagging
q fan on lady's work table, or running her
sewing machine up to driving the presses OF
big printing house or supplying the power
required in large machine shops.
! Electricity is also successfully utilized for
the development of heat Professor Thorn
son has made practical application of it in
the welding of iron and steel At Lockport,
n Y, an electrical furnace for smelling re-
fractory metals has been in operation now
nearly year, extracting aluminium mainly.
Another use for heat developed by cleo
tricity is the warming of apartments by
means of radiating surfaces, In which high
temperature has been induced by electric cur
rents, but, though this has been successfully
accomplished, it has not been done as yet at
such a cost as to popularize its use.
/ At least three of the later affiliations of
electric science for the service Of surgery are
worthy of mention Tho Induction bal
ance," invented by Hughes and Bell-frst
publicly applied for the exact location Of the
/ b,,Ilo+ =, Droc;Iapt In rHo11Ss baCt.-ie a most
ingenious contrivance, the use of which is
indicated by its employment upon that occa-
sion. The electrical cautery and the use of a
platinum wire heated to incandescence by an
electrical current for amputations are the
and versatile agent
Somebody has got up an electrical lock foE
safe The only connection between the in
side and outside Of the safe is a little copper
wire There is no way of getting at the lock
by knocking off the handle; no way of feel
ing the tumblers and by delicate manipula-
ton finding out tho combinations; no hole or
crack to poke powder in and blow the thing
open. Electrical burglar alarms are so CON-
mon now from the private plants In resi-
dences up to the big combinations with
watchmen, lanterns and clubs, such as are
used to guard the jewelry district Of New
York, that it is hardly worth while to speak
of them, except to mention that progress has
been made here, too, In making them cheaper
and more effective than they used to be-
So much has been said lately about Edison's
new and improved photograph that it hardly
seems worth while to moro than revert to it
here. Edison's separator for extracting metals
from ores that are difficult of treatment by
ordinary methods has been brought to prao-
tical demonstration Of its merits He simply
exposes the finely pulverized ores to the in
auence Of powerful magnet, that takes
cut the metallic particles thoroughly and
rapidly.
Another novel application Of electricity is
for the bleaching OF sugar, French inven-
ton, in which number Of New York CAPT
tahsts are interested Keeping pace with the
progress Of electrical science itself are the
multitude of inventions and contrivances OF
q secondary class to aid that progress, tools,
machinery, chemicals and what not An
application of electricity that good many
people are looking forward to with curious
interest-and some perhaps with little up
prehension-is its employment for the exc
cution Of feions condemned to death--New
York Sun.
Broadway Jewelers' Show Windows
The jewelers. shop windows used to be the
most attractive in New York. That WIS in
fba eyrsod old dor> h.afOra window droSroro