The Redwood gazette. [volume] (Redwood Falls, Minn.) 1873-1940, 1897-04-08
THE CONTRACT LET.
Chicago Company to Furnish the
Electric Light Plant.

S~SONs~
Electric Co. of Chicago by A. G. Bur-
meister at St. Paul last Wednesday.
The contract price is $3.50. The
company securing the contract agrees
to haye the plant in operation by the
18th day of June, A. D. 1897.
This contract does not include the
construction of the power house, which
will be of brick, and which will be
constructed by A. G. Burmeister. It
will be adjoining the Office of the mill
and will take in the base of the pres
ent smoke stack. Neither does it in
clude the foundations of the heavy
machinery, which Mr.. Burmeister
agrees to erect, together with the pow
or house, in time for the equipment
by June 18th. The entire cost of the
plant will be in the neighborhood of
81, 900.
The contract for the station equip
ment calls for the delivery and erect
ion upon foundation one so Killo Watt
Multipolar western electric dynamo,
with rated capacity of 200 amperes
at $50 volts pressure and a speed of
375 revolutions per minute. The dy-
namo is to be of the latest type manu-
featured by the Western Electric Co.,
and is to have heavy cast iron field
frame, supporting six hammered
wrought iron pole pieces, to be over
compound wound SO as to generate
22O volts at no load, $50 volts with a
load of 200 amperes.
The armature placed within the
pole pieces will be iron-clad, with lam
mated core, the construction provid-
ing for ample ventilation. 1t will be
bar wound, the connectors being en-
closed in insulating tubes Of mica held
intact by press board. They will be
placed below the surface of the arma-
ture, thus making it iron-clad without
the use of any bands of iron whatso-
ever, The end connections connect
ing bars in the armature circuit will
be of large cross-section, punched from
rolled copper sheet, bent into spiral
form, SO that they produce a current
of air for ventilation when the arma-
ture is in motion. This construction
leaves all end connections air insulat-
ed, enabling access for inspection and
cleaning out, or the easy removal OF
armature bars.
The commutator will be large and
massive and will be insulated with mi
ca. The brushes will be of carbon.
The dynamo will be equipped with
self-oiling self-aligning bearings, ad-
Unstable for height and laterally. The
dynamo is guaranteed to operate
properly and sparklessly with fixed
brushes under all variations or condi-
tions of loads. It is guaranteed, to
operate for II consecutive hours with
full load or less, with raise in tenn
perature not to exceed 60 degrees in
the armature or fields and 80 degrees
rise in commutator brushes or connect
ions. The commercial efficiency of
the dynamo is also properly guaran-
teed. The electrical efficiency ditto.
The company, after placing the dy-
namo upon the foundation, must pro-
vide the same with special shaft, and
to have suitable pulley for driving dy-
namo at the speed specified, from the
purchasers line shaft connected with
water power.
The switchboard is to be of white
Italian marble over an inch thick, and
is to be erected so as to enable a
speedy inspection on necessary occas-
ions.
The line construction includes the
furnishing and proper placing of rs
poles, IS feet long, and six inches at
the top, lis poles, 80 feet long and
FIVE inches at the top, and As guy
stubs, IA feet long and six inches al
the top. It also includes the furnish
ing and erecting of 22,24O feet ol
No. 10 weatherproof wire, 4,18O feet
of No. 8 weatherproof wire, I,94O fee,
of No. 6 weatherproof wire, 16,lOO feet
of No. 4 weatherproof wire, 1900 feet
of No. weatherproof wire, 9,O4O feet
of No. O of the same and 1,50O feet oi
| No. 90 of the same. It also includes
all necessary cross arms, insulators and
other materials necessary to carry out
the work as described in the specifca
tions. Also the wiring of SO l6 candle
power lamps concealed. and 25O II