 | Pacific horticultural correspondence school, Portland, Ore - 1912 - 446 pages
...pump should be ascertained before purchasing. This can be done by observing the following formula: Multiply the square of the diameter of the cylinder (in inches) by 0.7854; this gives the area of the piston. Multiply this area by the length of the stroke; this gives... | |
 | Robert A. McMillan - Marine engineering - 1912 - 378 pages
...at -foths of the stroke from the beginning at both ends, add these together, multiply their sum by the square of the diameter of the cylinder in inches, by the stroke in feet, and by the revolutions per minute ; divide this product by 14000, and the quotient... | |
 | 1906 - 520 pages
...for nominal power of a low-pressure engine of James Watt ^instruction : " Rule.-^Multiply the squaie of the diameter of the cylinder in inches by the cube...and divide the product by 47. The quotient is the nominal horse-power of the engine.'' Bourne informs vs that the assumed pressure in computing nominal... | |
 | Stanley Spooner - Automobiles - 1906 - 724 pages
...the rule given for nominal power of a low-pressure engine of James Watt construction : " Rule : — Multiply the square of the diameter of the cylinder...and divide the product by 47. The quotient is the nominal horse-power of the engine." fj Bourne informs us that the assumed pressure in computing nominal... | |
 | JOSEPH ROBERSON - 1855 - 778 pages
...The rule given by Mr Bourne for estimating the nominal or horse power of an engine is as follows: " Multiply the square of the diameter of the cylinder...product by 47 — the quotient is the number of nominal horses1 power of the engine." — (Catechism of the Steam-Engine, p. 46). To save the trouble of making... | |
 | Electronic journals - 1871 - 594 pages
...effective pressure on the piston to be three times as great, ie, 21 Ibs. per square inch. His rule is, multiply the square of the diameter of the cylinder...root of the stroke in feet, and divide the product by 15|. Thus we find a great diversity in the rules for estimating the nominal power of engines. This... | |
 | Engines - 1906 - 642 pages
...James Wratt construction : "Rule — Multiply the square of the diameter of the cylinder in inches bv the cube root of the stroke in feet, and divide the product by 47. The quotient is the nominal horse-power of the engine." Bourne informs us that the assumed pressure in computing nominal... | |
 | Franklin Institute (Philadelphia, Pa.) - Electronic journals - 1864 - 526 pages
...the foregoing formulas. A good rule for finding the area, in square inches, of the steam-port, is, to multiply the square of the diameter of the cylinder, in inches, by the velocity of the piston in feet per minute, and divide by 4000. It might, also, be observed, that the... | |
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Rule : Multiply the square of the diameter of the cylinder in inches by the cube root of the stroke in feet, and divide the product by 47. The quotient is the nominal horse-power of the engine. 
