Much historical interest attaches to the hydraulics laboratory at
Chaffinsville, five miles north of the Institute campus. It was a
pioneer development, and one that was to add materially to the
Institute's prestige. Professor Alden is credited with the original
conception of such a plant during the summer of 1893. He and Professor
White made preliminary studies, but final plans were prepared by
Elbert H. Carroll, '90, at the Washburn Shops, and it was he who
supervised the construction. The property on which the plant was
built, including the mill privilege, large storage reservoir and two
smaller ponds, belonged to Mr. Salisbury, who gladly donated it to the
Institute when informed of the use to which it would be put. In fact,
he had previously advocated the building of a plant in which hydraulic
tests might be made for mill owners.
The first structure, a frame building 90 by 40 feet, was built during
the summer and fall of 1894 on the site of the old woolen
mill. Through the efforts of Charles H. Morgan, the 36-inch Venturi
meter used at the Chicago World's Fair was secured - Mr. Salisbury
paid for it - and installed in the laboratory. A horizontal control
gate was built at the outlet of the storage reservoir, and a 40-inch
main was laid from there to the laboratory, providing an effective
head of water on the 18-inch Hercules turbine of about 32 feet. The
water then flowed through a draft tube to one of the dynamometers
invented by Professor Alden. A 30-foot tower on the building provided
access to piezometers installed in the Venturi meter. Other equipment
included a hydraulic ram, a water meter donated by Phinehas Ball, two
ten-foot weirs, and a weighing tank built on Fairbanks scales, which
had been on exhibition at the Centennial of 1876. Water was let into
the plant in December, and the first student experiments were made
there in May, 1895. The whole cost of the laboratory and its equipment
was about $12,000.
The Power House was completed early in the summer of 1895, at
which time two 100-HP vertical boilers were
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