Vectors, addition of, 13 
Velocities of water in pipes, 461 
Velocity, 15 
Velocity, coefficient of, 447 
Velocity diagrams, P toh or slider, 800 
Velocity of approach, 447, 452 
Velocity of whirl, 483 
Velocity ratio in belt gearing, 363 
Velocity ratio of a train of wheels, 388 
Velocity ratio of a machine, 26 
Velocity ratio of follower and cam, 404 
Velocity-space diagram, 287 
Velocity-time diagram, 286 
Vena contracta, 447 
Venturi water meter, 440 
Victor turbine, 493 
Virtual centre, 17 
Virtual slope of pipe, 464 
Volume strain, 65 
Vortex, 443 
Wall plates, 202 
Warren girder, 198, 231 
Water, compressibility of, 431 
Water, energy of, 439 
Water meter, Venturi, 449 
Water, weight of, 1, 436 
Water wheels and turbines, 485 et seg. 
Web bracing, 235 
Web plates, 218 
Web stiffeners, 219 
Weight, 18 
INDEX 
551 
Weight of plate ers, 223 
Weight of roof ines 210 
Weight of water, 1, 436 
Weirs, 451 
Weirs, drowned, 453 
Wetted perimeter, 461 
Wheel teeth, strength of, 107 
Wheel trains, 388 
Wheel trains, epicyclic, 391 
Wheel trains, reverted, 391 
Wheels, bevel, 384 
Wheels, pin, 382 
Whipple-Murphy truss, 231 
Whirl, velocity of, 483 
Whirling liquids, 444 
Whitelaw’s turbine, 492 
Whitworth quick return motion, 308 
Wilson-Hartnell governor, 342 (Ex. 16) 
Wind girder, 246 
Wind pressure, 194, 246 
Wind ties, 201 
Wire rope pulley, 366 
Wire ropes, power transmitted by, 370 
high and pet UL ~ et ef. : 
ork by an oblique force, 
Work, apse of, 25 
Work in raising a system of weights, 
24 
Work in turning, 25 
Working load, 68 
Working stress, 68 
Worthington pumping engine, 510 
Young’s modulus, 66 
Printed by BALLANTYNE, HANSON & Co, 
at Paul’s Work, Edinburgh 
