Arizona republican., 1915-05-23

Spiral riveted pipe, with forged steel
| bolted Joint connections. This pipe
is 80 in. in diameter
For the converters there are four
blowing units, the latest of which
| consists of a Southwark Rateau-
Smoot turbo- blower, designed for
"a, 900 Gu. TT of free air per minute
at $500 rpm, 16-lbs. pressure. The
other three are Nordberg, Southwark
and Allis- Chalmers compound, du-
pick blowing engines. operating at 60
rpm. the two former having G0-in.
44-in. air cylinders, with capacities
of 21,0O0 Gu. fit. and $1,000 Gu. #, re-
spectively. Air up to 1OO-lbs. pres
sure is furnished by Nordberg =
stage compressor. % and 42-in. and
10 and 32-in, with 4sin. stroke
which has a capacity of 5000 Gu. it
of free air per minute.
The furnaces are supplied with air
at 214 lbs. pressure by five Roots
blowers, two of 400 Gu it. two of
300 Gu. 1T. and one of 224 Gu. TT, one
of each size being motor-driven. One
Of the 400 Gu. f. machines is oper
ated by 16 and 80 by 36-in. Allis-
Chalmers, tandem compound engine,
and one 800 GU. #. blower is driven
from both ends by a 3-cylinder Diesel
engine of the Busch Sulzer Bros
Diesel Engine Co.'S build
The electric generating units in
clude two steam turbines and gener-
ators, both being of the Parsons
type. One is 1500-llva. machine,
built by the Allis- Chalmers Mfg. Co
and the other is a 50O-kva- Westing-
house unit. Both run 1T 5000 rpm
and deliver 3-phase, 60-cycle cure
rent, the former at 2300 vols and the
latter at 440 volts. Suitable trans
formers enable both to feed into the
same system. For furnishing direct
current to supply the electric loco
motives, cranes, converter and cast
ing machine motors, etc, there are
two Westinghouse synchhonous, 200
XIV. motor generator sets, taking al
ternating current at 200 volts, ana
giving out direct current at $50 volts.
Excitation current for the turbo gen
orators will also be normally derived
from this source; but there is So
XIV. turbine driven EXETER for start
ing up and as Il reserve.
The transformers in the power
house comprise the 300-kw., three
and three 50-kw. General
Electric oil-insulated, water-cooled
stepping from 22oO
down to 440 volts, and three 3O-kw.
220-220-110 volts, on
the lighting circuit.
Current from the transmission |
lines of the Arizona Power Co en-
tiers through substation at $4,000
volts, and is stepped down to the
200 volts of the works distribution
in three 2O0-kw. Westinghouse water
cooled transformers.
The main switchboard located in
the power house, is complete in every |
detail. 1t was built by the Westing-
house Electric e Mfg. Co Separate
panels, with rheostats and control
apparatus, are located in various
parts of the plant, where necessary.
Many Weston instruments are in ser
vice.
Handling of material in and
the works is facilitated by |
a system of standard gauge track |
age, laid with 60-lb. rails, as COM
pared with the 75-lb. rails used on
the Verde Tunnel railway.
Switching and tramming is done |
with Jeffrey lotion electric locomo-
tives, of which there are six together |
with the three 1s-ton locomotives |
previously mentioned, all equipped |
with air brakes and air cylinders for |
dumping. All outside haulage of ma
terials and supplies is done with mo-
tor trucks, of which there are three |
Macks. of .. 3 and 5-tons and one |
Gramm of 3-tons capacity.
The building first constructed in |