. 68, 69, 70, 71. Coupling, union, 248 Crank, substitutes for the, 39, 11 6, 12 3, 15 6, 15 7, 16 7, 394. variable, 94. Cranks, 92, 93, 98, 10 0, 13 1, 14 5, 14 6, 15 6, 15 $, 16 6, 17 5, 17 6, 220, 230, 2 31, 268, 279, 354,. 45 6- Punching machine, 14 0. R Rack, mangle, 19 7, 19 8, 19 9. mutilated, 269. Racks and pinions, 81, 11 3, 11 4, 11 5, 11 8, 11 9, 12 7, 13 9, 19 7, 19 8, 19 9. 269. 283. Ram, Montgolfier's water, 444. Ratchets and pawls, 49, 75, 76, 78, 79, 80, 82, 206, 225, 236, 2 71. Regulator,. 486. Miscellaneous movements, 10 1, 12 0, 15 3, 17 2, 17 3, 19 6, 203, 209, 210 , 217 , 218 , 232, 235, 247, 252, 2 61, 262, 263, 265, 273, 2 81, 282, 348, 360, 368, 385, 390, 3 91, 415 , 417 , 447, 469, 484. Motion, alternating traverse, 14 3. rocking, 419 . self-reversing,