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Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work (1910)

Lobben, Peder, 1858- · New York, D. Van Nostrand company · leaf 342

An illustration from Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work, 1910, leaf 342
s : P=B2 D^s/F P = Load in tons.D = Diameter of iron in inches. e=±y2D f=2B g=l%D i—\% D j=7/zD t=%D i = yAD m = iy2D k = iysL> S = Standard screw of diameter r n at the bottom of the thread. When a rectangular iron plate is substitutedfor a washer, the bearing surface of the plateagainst the… … 324 CRANES AND DERRICKS. CRANES. Cranes and derricks aremachines used for raising andlowering heavy weights. Inits simplest form, a crane con-sists of three principal mem-bers: The upright post, thehorizontal jib and the diagonalbrace. (See Fig. 5). Theweight P will produce tensilestress in the…

Mechanical engineering

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More pictures from Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work

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