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12 Feet 20 Feet aperture belt bobbin in inches Boyden brake buckets cansed cent central discharge chain chutes opened Company cubic feet cubic foot curb Depth on Weir downward discharge drum per minute Dynamometer engine experience Fairmount Water fall Feet 16 Feet feet head feet per minute feet per second Fourneyron frame front roll full bobbins gate opening gears Head Reduced Holyoke horse power horse-power hydraulic Jonval leakage Leffel Lowell machinery manufacturers Mass Mean power required Mill Power nsed nseful effect patent penstock Percentage plans pounds pulley register gate required to drive Rev.per minute Revolutions of drum Revolutions of front revolutions of spindles revolutions per minute screw Scroll scroll wheel shaft special report speed Spindles per horse spinning frames steam testing flume travers on bobbin trial turbine builders Tyler VASSALBORO velocity Water Wheel water.power WE1R Weight wheel tested Whole Gate width windlass yarn
Page 213 - is calculated by multiplying together the area of the piston in inches the mean pressure in pounds per square inch, the length of the stroke in feet, and the number of strokes per minute, and dividing by 33,000.
Page 48 - cheaply made, none of them have yet been found to compare with the original Fourneyron turbine as improved by the inventions of Uriah A. Boyden, whose name is familiar to every one who is at all acquainted with the history of our city. In 1844 Mr. Boyden designed a 75 horse-power
Page 213 - have the number of cubic feet flowing along the stream per minute. Multiply this by 62£, the number of pounds in a cubic foot of water, and this by the vertical fall in feet, and we have the foot-pounds per minute of the fall żdividing by 33,000, gives us the horse-power.
Page 44 - of the United States. THE SCHEDULE referred to in these Letters Patent and making a part of the same, containing a description in the words of the said
Page 51 - upright shaft of the turbine is a bevelled pinion, of 19 teeth, working into two wheels, on the right and left, each of which has 300 teeth. These give motion to the machinery of the factory, and drive 8,000 water spindles, roving frames,
Page 213 - Horse Power and other Matters. A waterfall has one-hors^ power for every 33,000 Ibs. of water flowing in the stream per minute, for each foot offall. To compute the power of stream, therefore, multiply the area of its cross section in feet by the velocity in feet per minute, and
Page 213 - accordingly made a series of experiments, which led him to the conclusion that the average power of a horse was sufficient to raise about 33,000 Ibs. one foot in vertical height per minute, and this
Page 50 - or about 13 inches English, and it is said to expend a cubic foot of water per second; probably the expenditure may be somewhat more than this. The width of the water-wheel across the pier is .225, or less than a quarter of
Page 50 - by a column of water of 108 metres, or 354 feet high, which is brought into the machine by cast-iron pipes of 18 inches diameter of the local measure, or about 16 '£ inches English. The diameter of the water-wheel is