NORTH SHORE BREEZE 
ESTABLISHED 
1858 
to $25. 
Inspected Hoosac Tunnel. 
The ‘‘electrified’’ Hoosac Tunnel 
was formally opened Tuesday, when 
a party of some 200 Massachusetts 
newspaper men, in charge of Vice- 
President Timothy E. Byrnes, of the 
Boston & Maine railroad, passed 
through the five mile bore under 
Hoosac Mountain in a train pro- 
pelled by an electrically operated 
locomotive. 
Many of the party made the trip 
on two flat cars attached to the 
special train which travelled slowly, 
giving all a grand opportunity to 
inspect the electric wire arrange- 
ment, as well as viewing part of the 
interior of the old tunnel itself. 
The party emerged unsmirched by 
dust and soot which for years has 
been the toll of all who have passed 
through the tunnel even in closed 
ears with shut windows. 
The air all the way through the 
tunnel was good and cool and the 
trip was made with none of the dis- 
comforts with which the Hoosac ride 
has been coupled for years. 
In a general way, the system of 
electrification of the tunnel is similar 
to that in successful operation on 
the New York, New Haven & Hart- 
ford road between New York and 
‘Stamford, and the overhead wiring 
and bridges at the approach to both 
portals recall this part of the New 
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Haven system. 
Over each track there are two 
contact wires suspended from a cop- 
per messenger, all wires being in 
multiple and having impressed upon 
them the normal voltage of 11,000. 
This would give approximately 1414 
miles per track, or 2.5 miles of power 
transmission wire in the tunnel. 
The average power required at the 
tunnel for trains is in the vicinity 
of 5000 kilowatts. 
The electric locomotives used are 
of the well-known Westinghouse 
type, and each is capable of develop- 
ing 1400 horse-power. These power- 
ful locomotives will be able to accel- 
erate a 2000-ton train. 
The locomotives are designed to 
handle all trains coming to the east 
and west portal of the tunnel, and 
couple directly on to the steam loco- 
motive, hauling it with its train over 
the electrie zone. 
There is no other tunnel in the 
world where the situation is just that 
of the Hoosae, and there is no other 
place in the tunnel construction 
where the factors of safety are so 
large in the way of insulating the 
wires, in order to cut down to a 
strict minimum the electrical failure 
of the line. 
One of the chief requisites to an 
electrical plant of this sort is a pow- 
er-house for the manufacturing and 
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control of the ‘‘juice,’’ and this was 
one of the first things to receive the 
attention of the engineers in charge. 
Zylonite, about two miles from the 
west portal, was selected as the site 
of this. 
The power house, a_ substantial 
structure of brick and steel, 200 feet 
long by 100 feet wide and about 100 
feet high, has been equipped with 
four boilers of 500-horse-power each 
there is room for several more with 
a total capacity of 5000 horse-power. 
For the production of the required 
electricity there have been installed 
by the Westinghouse Machine com- 
panv two 3000 kilowatt turbo gener- 
ators, each turbine being capable of 
developing 3000 kilowatts. 
The dynamos directly connected 
to the turbines are capable of an 
output of 4200 KVA. The speed is 
1500 R. P. M., and the generators 
are wound for three-phase, 25-cy- 
eles and 11,000 volts. 
The switchboard consists of the 
usual system of low voltage control 
panels operating oil switches  ar- 
ranged to the rear of the panels in 
septum walls, these walls also en- 
closing the high tension fuses to 
which the oil switches are connected. 
The power house is equipped with 
an automatic coal-conveyor, which 
feeds for the boilers as automatic 
stokers. 
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