Auger bit, [i, 453].
Augers for end-grain wood, [i, 454].
Augers for wood boring, [ii, 342].
Automatic air brake, [ii, 398].
cut-off engines, [ii, 423].
engine, high speed, [ii, 427].
engine, straight line, [ii, 428].
wheel governors, [ii, 427].
feed motions, [i, 408]; [ii, 8].
gear cutter, [ii, 54].
nut tapping machine socket, [ii, 475].
grindstone traversing device, [ii, 53].
Auxiliary valve, [ii, 438], [439].
Ax handle lathes, [i, 210].
Axle boxes, hot, [ii, 403].
locomotive, [ii, 148].
brasses, testing, [i, 366].
Axles, crank, lathes for turning, [i, 152].
forging, [ii, 259].
B
Babbitting boxes, methods of, [ii, 155].