El Paso herald. (El Paso, Tex.) 1901-1931, 1920-08-28

for safety sake. so that the speed Of
the pump viii never be so great
that the safety Of the tanks and the
connecting pipes viii be threatened.
Sometimes there may be placed in the
pipe lines a safety plug which Is
l weaker than any other part OF the
line, 50 II the pressure rises too high
the plug VIII give way, thereby cut
ting of the pressure and saving the
rest OF the system
The water Is now back in the tank.
and although II is being continually
drawn upon to operate one or more
water wheels or water motors, still
[ the pump is continually working as
I long as the gasoline motor is work
ing, thereby keeping the tank from
becoming exhausted The capacity
OF the pump is so designed that Il
VIII be great enough to work against
the pressure head Of the tank at very
low rotative speeds, and II will be
able TO replace the water that is
used for running all the water wheels
The greatest drain on the tank Is al
ways due 70 the water wheel which IS
used in starting the gasoline engine.
as this requires a much greater
energy than any Of the other tanks
The Storage Battery.
Coming back 10 the electrical end,
il is not very hard TO picture the tank
as the storage battery which. instead
OF carrying supply OF water, carries
a supply Of electrical energy.
The valves which control the
water flow to various water
wheels or water motors. CORE
spond exactly with the switchboard
which governs the flow Of the current
from the storage battery to the DIFF
ferent electric units. The starting
water wheel which sets into opera Z
ton the gasoline motor Is the electric ]
cranking motor which operates the Z
crankshaft OF thu gasoline engine and I
sets it in motion under its own I
power.
Stripping the mask off the water 4
pump. We see that it is simply our l
old friend the electric generator in 1
another guise. The governor on the 1
water pump which regulates its speed /
is the current regulator on the gen |
orator which governs the amount Of /
current that Is supplied by the gen /
orator The check valve which pre- I
vents the water current from flowing 4
in the wrong direction is simply the /
reversed current output or the cut 1
ont relay, or whatever one wishes TO /
call II. in the electrical system Il /
prevents the battery from dischsrg-
ing itself through the electric gen I
orator when the potential or pres 1
sure OF the current in the latter IS /
lower than that OF the battery. and 4
the current would naturally tend 10
flow the other way.
The Safety Ping.
The overflow Is the exact parallel I
OF the battery floating on the line ar
fangemenr which permits the current !
10 tow continuously from the gen
orator after the storage battery is
completely discharged The safety
plug which IS Inserted IN the hydrau-
lie line 70 allow Of an easy escape OF
excess pressure corresponds 70 the
fuse which blows out when the cleo
rtcal pressure rises above the safety Z
point OF the system The little water /
motors shown on the diagram are |
nothing more than the consumers OF /
current IN the electrical system The I
amps, Ignition system and horn an
lraW their. supply Of current from I
ne storage battery, and are con-
rolled BY the switches. which are
similar 70 the valves in the water
iystem-
Taking the car as It stands At the |
,urbs the storage battery Is the onlv
art which IS capable in itself Of
Producing energy. A touch on the
tarter switch causes some Of the cur
enr contained IN the battery 70 flow
through the starting circuit, thus
lutLtng the starting motor into opera
ion This cranks the gasoline motor
nd starts II running As soon as q
ar reaches q speed OF 10 miles Der
icur, the generator cuts N. the check
alive has been lifted and the current
'egtns to be replaced IN the tank 70
make up for the supply which vas
rawn out IN cranking the engine
The Generators Output.
As the speed increases the gen
rator output Increases, until Il
caches the correct level, and then
he regulator. which corresponds 10
he governor on the pump, comes into I
.cuon- The result e that the output
$ held steady from that point on.
wen though the car speed is in
.reased rapidlys-July Motor.
In 1905 Londoners petitioned Ed
yard I TO put an end 70 the smoke
lisance in their city.