F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/264
F16H 7/08 (2006.01)
Patent
CA 1072780
A B S T R A C T A tensioning device for maintaining a constant tension on con- tinuous or endless drive members, such as continuous drive belts, chains and the like. A lever carries an idler roller at one end thereof which is adapted to engage the continuous drive belt, or the like. The lever is pivotally mounted on the engine, machine, or other apparatus which carries the continuous drive belt. A spring means is provided for nor- mally biasing the lever in a direction to move the roller toward the belt to maintain a constant tension thereon. A spring biased wedge means is movably mounted on the lever for engagement with a cam means for hold- ing the lever in an adjusted position. The spring biases the lever against the belt automatically to maintain a constant tension on the belt as the belt stretches or loses its tension. The wedge means permits the lever to automatically move in one direction to maintain a constant tension on the belt, but it restricts movement of the lever in the opposite direction.
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