69
62. Bevel gears 71
63. Miter gears 71
64. Crown wheel 71
65. Grooved friction gears 71
66. Valve 71
67. Cone pulleys 71
68. Universal joint 71
69. Trammel 73
70. Escapement 73
71. Device for holding wheel 73
72. Rack and pinion 73
73. Mutilated gears 73
74. Shaft coupling 73
75. Clutches 75
76. Ball and socket joints 75
77. Fastening ball 75
78. Tripping devices 75
79. Anchor bolt 75
80. Lazy tongs 75
81. Disc shears 75
82. Wabble saw 76
83. Continuous crank motion 76
84. Continues feed 76
85. Crank motion 76
86. Ratchet head 76
87. Bench clamp 76
88. Helico-volute spring 77
89. Double helico-volute 77
90. Helical spring 77
91. Single volute-helix 77
92. Flat spiral or convolute 77
93. Eccentric rod or strap 77
94. Anti dead-centers for lathes 77
95. Plain circle 95
96. Ring