. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . ALL. DRIVERS RIGHT DRIVE! LRS-^ CLEFT DRIVERS ©£)©©© Fig. 6. — Rail Pressures. Eight-wheel Engines. (Am. Ry. M. M. Assn.) The effect of the excess balance and the angularity of the main rod can be accurately calculated, and is shown on the diagrams given in Figs. 6 to 12.* The calculation for the diagrams given on Figs. 6 and 7 were all made from * Figs. 6 and 7 are taken from Proceedings Am. Ry. M. Mech. Assn., 1895. Figs. 8 to 12 arefrom data kindly furnished b
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . ALL. DRIVERS RIGHT DRIVE! LRS-^ CLEFT DRIVERS ©£)©©© Fig. 6. — Rail Pressures. Eight-wheel Engines. (Am. Ry. M. M. Assn.) The effect of the excess balance and the angularity of the main rod can be accurately calculated, and is shown on the diagrams given in Figs. 6 to 12.* The calculation for the diagrams given on Figs. 6 and 7 were all made from * Figs. 6 and 7 are taken from Proceedings Am. Ry. M. Mech. Assn., 1895. Figs. 8 to 12 arefrom data kindly furnished by the American Locomotive Co. STEEL RAILS 20000ISOOOIOOOO D 9P R,GHT180°C 2 O 30 >W N^ \ ■ 9Q !80_ / \ / \ , /^ ^> ***4= =^r. \ \ A \ / \ \ J \ /M ^■^ \ \> ^J \ \ J \ \ \ \J ALL DRIVERS OQOOO Fig. 7. — Rail Pressures. Ten-wheel Engines (Light Weights). (Am. Ry. M. M. Assn.) data obtained from eight- and ten-wheel engines on the C. M. & St. P. following are the principal dimensions and weights of each * * Report of Committee on the Wear of Driving-Wheel Tires, Proceedings Am. Ry. M. , 1895. PRESSURE OF THE WHEEL ON THE RAIL 37 Eight-wheel Engine. Ten-wheel Engine. 16 by 24 inches 160 pounds 56 inches 8 feet, 6 inches 7 feet, 2\ inches 2i inches 480 pounds 54,000 pounds 19 by 26 inches 10 feet 3J inches The piston, piston rod, crosshead, and front end of the main rod are takenas reciprocating parts, the back end of main rod as a revolving weight, in allcalculations which follow. The weights of the ends of the rods were found by supporting each endat the center of the box or bearing, and resting them alternately on scales. The eight-wheel engines had the entire weight of the reciproc
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