474 / | HD | ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS |
101 | DF | MEANS FOR ADJUSTING BELT TENSION OR FOR SHIFTING BELT, PULLEY OR GUIDE ROLL {11} |
113 | DF | .~ Pulley shifter {4} |
114 | .~.~ Pulley on shaft of adjustably mounted drive motor {1} | |
115 | DF | .~.~.~> Spring biased in belt-tensioning direction |