194 / | HD | CHECK-ACTUATED CONTROL MECHANISMS |
239 | ![]() | INCLUDING ELECTRIC CIRCUIT WITH SWITCH OPERATED BY CHECK {3} |
240 | DF | .~> And holding circuit responsive to operation of switch {1} |
243 | DF | .~> And means to impart thrust to check to operate switch |
244 | DF | .~> Weight of check operates switch {1} |