| 194 / | HD | CHECK-ACTUATED CONTROL MECHANISMS | 
| 247 | DF | INCLUDING PART LOCKED BY DETENT AND RELEASED BY CHECK {3} | 
| 260 | DF | .~ Weight of check unlocks part {5} | 
| 261 | DF | .~.~ Pivoted released part {3} | 
| 262 |  | .~.~.~ Unidirectionally pivoted {4} | 
| 263 | DF | .~.~.~.~> Noncontacting, relatively movable parts connected by check | 
| 264 | DF | .~.~.~.~> Having means to hold check in contact with detent {2} | 
| 267 | DF | .~.~.~.~> Having motor for driving released part {3} | 
| 276 | DF | .~.~.~.~> Having regulating ratchet mechanism |