The morning news. [volume] (Savannah, Ga.) 1887-1900, 1896-01-26
- Done By COMPRESSED AIR.

rom the Chicago Record
ed Messengers are frequently sur
t,- the unexpected entrance into the
Is a group of chattering, bareheaded
c- Tbose who do not recognize them
49, cleaners and busters wonder who
Is-e and how they boarded the train.
men hardly appear several blocks
~ -ba terminal station, and so proficient
.ts, in the art of dipping a train
-he engineers do not come 70 iul
US v-ran they see their 1eather busters
sly IONS beside the track, but reduce
@-- s--ed somewhat and the women SWING
i-- neatly as brakenen- When the last
o. 81 Ger has left the train the women
secession of the cars. They are all
iaAgt and muscular, quick with the
-- and active with the feather dus-
md chamoiS skin, ana Dy me time
i.- . are thrown on the cleaning switch
i.r Ts,e the floors well cleaned OF peanut
KS Dsper and cigar stubs and are ready
for ne ,,T See of the roads the women still
~ The cushions outside of the car and
.e++be dust from them by whipping them
vifh willow beaters. But CON oIlgresse1 u a..
Nt-s,aken the place of the paddle on most
pa 80 roads The hose which contains the
t-1--ressed air is run into the car through
window or door, ana the women, hanI-
S,it as they would a garden hose. sprlnk-
~ the grass, turn the jet or Kissing ar
Ion the plush cushions and the dust hies
.lt No whisk broom, willow paddle, leath-
2. 55--assed air does. The Jet searches
e .vsrv crack and Granny and drives the dust
nm the very wood itself. Sometimes the
or1en turn the air upon the window cas-
~ nd in a fifty ii is clean OF dust.
me man who makes air compreSsers
"a this novel use of compressed air as
s1ofher point in favor of the claim made
O.. Lis craft that compressed air was just
tssrinnfua to enter into the common every
IAN work of the world. He added that few
11rsons knew the uses to which compress
GtODDlnE
frilIing rock and initiating bicycle tires,
"F,Iectricians think that this is the cleo
e. far as lighting. telephoning, telegraph
inc and welding goes, but when IL comes
t the transmission of power they are
talking too much. They have worked and
r,ck drill which would take the place of
Inc air drill, but they have not succeeded.
They have tried to make an electric train
brake which would bring limited ex-
mess train to a full stop sooner than the
automaric air brakes Will do IL, but they
are So far behind that they will never
catch up. It will not be long before street
sars will be running with compressed air
as a motive power and they Will be safer,
more easily controlled, viii run as 1ast,
win stop quicker, will wear longer, and
viii be operated at less expense thant the
hest electric system they can put on rails.
With good air compressor air at any
nressure can be stored up in a reservoir
ar steel tank, and can be taken to any
noint in reasonable distance as econom-
ically and with less waste than electricity
can be sent by wire. The air compressor
is q pump which is part of stationary
engine The piston in the air chamber
frst sucks the air in, and then forces it
through a pipe to the reservoir. OF course
tha more air one pumps into the reservoir
the greater pressure to the square inch
one gets. The compressed air works like
steam except that IL is cold and has not
the expansive qualities of steam. But
steam cannot be carried through pipes out
Of doors 70 any great distance. for it would
soon lose its heat. would condense and
soon turn back to water.
Cleaning cushions by compressed air
is one way of using It that few people
are always interested in the rock drills
which bore holes for the dynamite cart
ridges, and almost everybody knows that
the brakes of passenger trains are operat-
ed by compressed air.
Il know Of a machine shop where there
is not belt, piece OF shafting, or an
electric wire, for al 1.-The machinery, from
little emery wheel to q O-ton Crane. is
operated by compressed air. The shop is
traversed by large pipes from the air
reservoir, and from these main pipes
smaller pipes lead down to the machines.
Each machine, whether drill, planer,
shears, lathe, bending rolls, milling ma
chine, punch, drop-hammer, press or cold
mere turning of valve stops or starts
the machine.
"A pneumatic clock system has lately
been Installed in the new criminal court
building in Chicago. Pneumatic clocks
are not new, for they have been used in
Paris for twenty-five years. Now over
1000 clocks are operated and regulated
from the central clock by compressed air.
The pneumatic clock system, installed
IN Paris twenty-five years ago, was the
beginning of the compressed air central
power system, which supplies over 10000
horsepower to users in the French cap
tal. 1t is used there for all purposes,
from running clocks to operating dyna-
mos for electric lights. The central sta
ton furnishes air at a pressure of seven
ty-fve pounds to the square inch. 1t is
sent around the city under the streets in
pipes, and is sold to customers by meter,
Just as gas is
The solution of the smoke problem in
Chicago is easy. Put central power sta
ton where the smoke will bother no one,
and from this station send electricity,
high-pressure water, or compressed air,
to the business center and to the stock
Yards; The cheapest power that can be
used in this way is compressed air. Ele-
Vators, printing presses, wood and Iron
working machinery, and, in fact, every
thing operated by steam can be operated
by compressed air. Some day we shall
have pipes for compressed air under the
pavements of Chicago streets, and there
VIII be no smoke, if the tugboats and the
locomotives can be subdued.
Asphalt used for street paving is refined
by compressed air. In it's original shape,
Just as it comes from Trinidad, asphalt is
100 soft for street paving and is not homo
geneous. To refine it the asphalt is boiled
IN kettles for three or four days, and while
The heat is on it must be constantly
stirred. Pipes with numerous holes are
placed in the bottom of the kettle, and
While the asphalt is boiling compressed
air is forced through the pipes, and, es-
gaping through the holes, 1t agitates the
MEX, black stuff. At first the air comes
70 the surface in big bubbles, and the as
Phalt slobbers~ all over the inside of the
Kettle, but at the end of three days the
asphalt has become so think that the air
makes it boil in little bubbles, and it then
oraWn off in barrels, where it cools hard
and even
IN France they make q sort of silk from
WOOD pulp by the aid of compressed air.
ne wood pulp is put through a chemical
process which changes it to a sticky sub
stance like gelatine. 1t is then placed in
closed tank and compressed air is in
sI,oduced; The air first presses the sub
stance through a filter and then into
smaller tank, which is under the large one.
ms tank is in a horizontal position, and
rom II spring hundreds of glass pipes, in
esch OF which the hole is about the size
y. silk fiber. The wood pulp is forced
Trough these tiny holes and comes out in
,te shape of threads so fine that six of
eIeln are required to make a thread strong
enough for weaving.
oppressed air was the paint brush
Ea,cA placed the color on the worlds fair
ssudlIulngs, and which to-day is painting
rrqqllroad bridges and corrugated iron
i4dteS for buildings The cornDresSed air