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Minimum time for a given horsepower Case 1
Relations of velocity time and space
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acceleration alloy American Bridge Company angle antimony arms assumed Axis of moments bascule bascule bridges base bending bevel gears bolts brake band brake wheel bronze cast iron cast steel cent center of gravity centroid circular pitch coefficient of friction compression counterweight ropes cylinder deflection discs distance drum elastic line electric flanges force formula ft ft girders given horse-power hydraulic increased Involute involute teeth journal leather cup length lever lubrication main pinion maximum mechanism motor movable bridges movable-bridge machinery number of teeth operating machinery ordinary pitch diameter pitch line pounds per square proportioned rack circle radius revolutions per minute rollers rotation shaft sheave shown in Fig spur gears square inch surface swing bridges swing span TABLE tension tests thickness tooth load torque torsional trunnion trusses unit stresses velocity vertical vertical-lift bridges Webs wedges weight wire ropes worms and wheels