This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 Excerpt: ...6. Compare the theoretical horse-power in problem 5 with that obtained by the use of empirical formula. PULLEYS. NOTATION--The following notation is used throughout the chapter on PulleyB: A =Area of rim (sq, in.). I = Length of hub (inches). a= " "arm(" "). N =Number of arms. 6 = Center of pulley to center of belt n-- ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 Excerpt: ...6. Compare the theoretical horse-power in problem 5 with that obtained by the use of empirical formula. PULLEYS. NOTATION--The following notation is used throughout the chapter on PulleyB: A =Area of rim (sq, in.). I = Length of hub (inches). a= " "arm(" "). N =Number of arms. 6 = Center of pulley to center of belt n--" "rim bolts, each side. (inches; practically equal to R). P =Driving force of belt (lbs.). Ci=Total centrifugal force of rim (lbs.). Pi=Force at circumference of shaft c Distance from neutral axis to outer (lbs.). fiber (inches). Pj=/Forceatcircumferenceof hub (lbs.). D = Diameter of pulley (inches). V-Stress in rim due to centrifugal force Di=" "hub ( " ). (lbs. per sq. in.). d =" "bolt at root of thread E =Radius of pulley (inches). (inches). S = Fiber stress (lbs. per sq. in.). d Diameter of bolt holes (inches). 8 =Fiber stress in flange (lbs. per sq. in.). g = Acceleration due to gravity (ft. T = Thickness of web (inches). per sec.). t = " "rim ( " ). h = Width of arm at any section (inches), tt--" ""bolt flange (inches). I = Moment of inertia. T u-Tension of belt on tight side (lbs.). L--Length of arm, center of belt to hub T0= " "" "loose " (" ). (inches). v = Velocity of rim (ft. per sec.). Li=Length of rim flange of split pulley to =Weightof material (lbs. per cnb. in.). (inches). ANALYSIS. If a flexible band be wrapped completely about a pulley, and a heavy stress be put upon each end of the band, the rim of the pulley will tend to collapse just like a boiler tube with steam pressure on the outside of it. A compressive stress is induced which is very nearly evenly distributed over the cross-section of the rim, except at ...
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New. Trade paperback (US). Glued binding. 186 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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