066 NEW YORK STATE MUSEUM 



pipes, only two of which are in use at present. These pipes are 

 joined, by means of a east iron Y, into a 7-foot penstock. The 

 penstock is 3700 feet Long, and for 2700 feet is constructed of 

 pine stayes banded with %-inch round steel bands. These bands 

 are about G inches apart. The balance of the penstock of about 

 1000 feet is constructed of steel varying in thickness % mck to 

 % inch; 250 feet from the end of the penstock there is a stand- 

 pipe 180 feet high. When there is no load on the plant the water 

 rises 150 feet high in this pipe, but falls from 10 to 15 feet as 

 the load varies. The penstock leads into a receiver from which are 

 taken four 48-inch and two 12-inch pipes. Each of the 48-inch 

 pipes supplies an 1800-horsepower outward flow reaction turbine, 

 with vertical shaft. A 1000 kilowatt alternating current genera- 

 tor, running at 360 revolutions per minute, is connected to this 

 shaft. Each of the 12-inch pipes supplies a 110-horsepower 

 turbine, with vertical shaft direct connected to the armature of a 

 75-kilowatt direct current generator, running at 750 revolutions 

 per minute. The total head is 265 feet, and the .maximum load 

 carried during the winter of 1004 was 7600 horsepower. The cur- 

 rent is transmitted at 22,000 volts to Utica, 12i/> miles distant. 

 The usual step-up and step-down transformers are included. This 

 plant was designed by Wm. A. Brackenridge. 



Power Development on Raquette River 



Hannawa Falls Water Power Company. There is an im- 

 portant power development at Hannawa Falls on Raquette river, 

 where the catchment area is 967 square miles. This stream has a 

 fall of nearly 300 feet in three miles of its course below the vil- 

 lage of Colton, and a further fall of 85 feet in the next two miles 

 of its course. 



The land and water rights along this part of the river have been 

 acquired by the Hannawa Falls Water Power Company, who have 

 developed the lower 85-foot fall. A masonry dam has been built 

 at the village of Hannawa Falls, forming a pond 2 1 / 1 > miles long 

 and covering 200 acres. From this pond the water is conducted 

 by a canal 2700 feet long as a forebay, thence by penstocks to the 

 wheels. The tailrace extends 2000 feet from the power house, 

 being separated from the Raquette river by an embankment of 

 earth and stone. At the point selected for the dam I lie bed of 



