## Treatise Relative to the Testing of Waterwheels and Machinery: With Various Other Matters Pertaining to Hydraulics |

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12 Feet 20 Feet average belt bobbin buckets builders cause cent chutes Company Computed connected constructed Correction cost cubic feet curb Depth Depth on Weir determined diameter discharge drive effect engine equal experience fall FEET PER SECOND flume foot Foot lbs force four frame gave gears give given Head Holyoke horse power horse-power inches JAMES kind LENGTH less Lowell lower machine machinery MANUFACTURED Mass matter Mean measurement mill necessary obtained opened patent Percentage placed plans pounds power required proved pulley purchaser quantity race Reduced revolutions of spindles revolutions per minute river roll scroll seen shaft ship simply speed spindles Square stream taken tested tion trial turbine turns varied velocity Water Wheel Weight weir Whole Gate windlass yarn

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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

Page 213 - For example : a stream flows through a flume 10 feet wide, and the depth of the water is 4 feet; the area of the cross section will be 40 feet. The velocity is 150 feet per