The Barre daily times. (Barre, Vt.) 1897-1959, 1916-10-05
HOUSED IN GRANITE STRUCTURE.
Largest Steam Propelled Air Compressor
in New England at Boutwell,, Milne
& Varnum's.

A granite walled structure of spacious
proportions houses the largest steam
propelled air compressor in New England
in the new power plant which Boutwell,
Milne & yarnum used at their quarrles
in Graniteville for the first time this
forenoon. For the first time since the
granite quarrying industry was devel-
oped on Milestone hill, the native stone
is used in erecting a powerhouse that Is
probably the most thoroughly equipped
plant OF its kind in Vermont. The out
side walls of the structure have lateral
dimensions of 65 and so feet with a
height of "a feet The facing OF the
granite brick wall Is of broken ashIar
finish. Not stick of wood was used in
the construction of the building, even the
window sashes being of steel. 1t Is To-
Gated near the main road leading to the
first quarry and easy of access to the
artificial pond from which the company
supplies its compressor.
Excavations for the powerhouse were
started in April and except for the floors,
the building was completed Aug. |, -Four
thousand cubic feet of stone from the
Boutwell,, Milne & Earnum quarries, six
carloads OF brick and four carloads OF
Portland cement We're used. Steel and
concrete were used for the roof and ce-
ment for the floors. In connecting all
of the quarries with the compressed air
over two carloads of pipe were required.
In every sense of the word as used by
modern builders, the plant is fireproot.
Quarried near the scene of the building
operations. the stone was cut by the
cutters and the masonry was
in charge of John Miglierini of Mont
peler The machinery WAS shipped from
Philipsburg, n. j., Sept. IA and arrived
in the Barre freight yards Sept. IL !. ?.
Galleher, the Central Vermont agent at
the capital, accompanied the machinery
from the factory and its quick transit
was due in part to his activity.
In conjunction with the plant construc-
tion coal trestle has been erected and
large steel hopper cars readily dump the
fuel into bin commodious enough to
hold a years supply.
The air equipment centers around a
two o-stage air compressor manufactured
ov the Ingersoll Rand Co. at its Philips
burg plant and is guaranteed to deliver
',770 cubic feet OF free air per minute
TO 100 pounds pressure, being |
operated by a s-compound Corllss en-
,ine The high pressure steam cylinders |
lave a diameter of Il inches, the low
PRESSURE cylinders 40 inches The diam
ter of the high pressure air cylinders
; 2212 inches, the low pressure air cyl
nders sc inches The stroke is 30 inches.
The engine is rated TO deliver 675 horse
,ower and steam is furnished by 235
horsepower horizontal boiler carrying 100
ounds of steam pressure and is equipped
With superheater. A surface condenser
ompletes the equipment of the engine.
ised in conjunction with the condenser
nd superheater, the outfit is guaranteed
OF TO require more than 1919 pounds OF
team per horsepower per hour.
Until the company began to operate
IS new plant, 900 cubic feet OF air per
minute. furnished by a much smaller
was used entirely for plug
riring Additional air now available
ill be used to operate large rock drills
nat were previously operated by steam.
our boilers are discarded with the new
liant in use.