The Hawaiian star. [volume] (Honolulu [Oahu]) 1893-1912, 1911-09-04
AIRBRAKES



man winding and un"indlng hute
handle viii disappear ana uhW"r!
ones will not receive so many per.
cmptory demands TO stand oo'h "n"e
the process is going on or sustain d
sharp blow IRON the hauule as IT "Ie7
back into position
Wonderful Simplicity
The operation of the air brake is
simplicity itself No matter how fast
the car is going, it can be brought to
standstill within its own length
under ordinary conditions, that IS
with a dry rail. with a wet rail-
a greasy rail as it is called-the DIS
lance will be greater, owing to the
failure of the wheels TO bite. me
stopping of the car is brought about
by series Of manipulauons OF the .
handle, the distance to be covered not
being more than two inches
A short movement to the right Is.
service application. This means that
the car is being brought up gradually
at a stopping place. Should 1t be nee
essary to stop it within its own
length, then the motorman pushes the
handles to the extreme right thus
tanning the brakes on tight. Ih1s Is
termed the emergency position. 20
release the air pressure he pushes
the handle to the left, either an easy
movement, or to the extreme accord
ing to the conditions. The manlpula-
; ton of the air brake is simple. Inore
is no hard work about it like there IS
e in connection with the hand brake
and it is all accomplished within CIR
cumscribed space. There is no need
ID for large area in which to work.
k Everything automatic
Then, again, the motorman knows
s exactly how much air is available
e Although why he should ever bother
X to look at the gauge in front of him
is mystery, for everything is done
Il automatically, apart from applying OF
Ie releasing the air brake. He has nc
N need to trouble ever anything. Al
that is necessary after the installation
i is to furnish oil once a month, anc
n this is done by an attendant in the
n. shed 1t seems rather sweeping tt
r. say that everything else is done AUTO
matically, nevertheless such is th'
case. Every part is oiled by the work
- ing of the system, the slack is takel
up automatically, the motor start
80 and stops, as though controlled b,
= some human impulse, the prope
amount of air is taken into the com
pressor, and then the machine stop
pumping until this is reduced to
- certain pressure, and so it is through
=, out. The only thing the machine does
l. not do is repair itself.
60 The air compressor and the moto
are combined. These are fitted unde
o' the flooring of the cars, out of sigh
w. of the passengers or pedestrians. Tn
al motor pumps at the rate OF iittee
cubic feet OF 1ree ar minute q
-, soon DIS pressure 81 9iA'' u = p 80.
- u 'iie Sq",,' 9 'iioi' ll',9 80, ,,,,r,,
!, "O'o"i'''i '''i'' '"e NO. So - 80
i-'s' 1>S sun 90 INC - so -,
uuceu ~ my -ii'e p0'"'9' NV,
DeElhS us "oiN 's.'iii' ,,''u 0e'''>'
more "neH 'lio SiH'S - - - ~ ~
Nc sure mann -
re, pressure SCI DIS Oo''s 9''l-lll>ii' -.
er- tne "orN' Du' inc 0ol-,l' 0'''0''
take w W eisn'S poo-u''
IN "u, sung n''.se, - =, ,"''e,'s..
ILL., IN oruer 10 ellllllila'e al u'isei i'"'
,st purS'lHs' 'nious" '"o e0'o.,.o'
he coming ueI1Hseu, !" soy ,,, ,ulD =,
by peen lLS'aiieu his WIN ''' -, -,
ION "l'ol','e'S ~ WoiN W. ~ - 80 ,,,a,
bv OF elghty POUNDS TO uhe SQUARE INCA