Disconnectable driving roller for roller conveyors

A disconnectable driving roller for roller conveyors having individual driving roller groups isolatable from a common conveyor drive comprising:

• a driving wheel,
• a roller axle, a roller having a one end, said roller being mounted at said one end on said roller axle;
• driving means for driving said roller, said driving means having dog coupling means for drivingly connecting and disconnecting said driving wheel to and from said roller;
• said dog coupling means including a first coupling means mounted for sliding axial movement between an operatively engaged position and an operatively disengaged position of said driving means on said roller axle;
• coupling lever means pivotally mounted on said roller axle, for pivoting in a pivotal plane transverse to the roller axle for moving said first coupling means between an operatively engaged and an operatively disengaged position, said coupling lever having an axially projecting cam with a cam surface substantially in a plane parallel to said pivotal plane;
• an actuating disc mounted for sliding axial movement while substantially fixed rotationally on said roller axle between said first coupling means and said coupling lever means;
• and
• said actuating disc having a cam follower with a cam surface substantially in a plane parallel to said pivotal plane and arranged for cooperation with said cam of said coupling lever means so that when said coupling lever means is pivoted from said disengaged position to said engaged position, said first coupling means is moved axially from said operatively disengaged position to said operatively engaged position by said actuating disc whereby said driving means is drivingly connected to said roller.