Rear dump operating mechanism

In combination with a vehicle having a frame supporting a dump body for pivotal movement about a transverse horizontal axis, said dump body comprising a pair of laterally spaced side walls, a front wall and a floor portion, an operating mechanism for pivoting the dump body about said transverse axis between a lowered position and a fully raised position, said operating mechanism including a bell crank member having a pair of arms, means connecting said bell crank member to said dump body for pivotal movement about an axis parallel to said transverse horizontal axis, a track fixed to said frame and extending longitudinally thereof, one arm of said bell crank member adapted to move along said track, a linear drive transmitting means supported adjacent one end thereof by said frame and pivotally connected at the other end to the other of said arms and located with its longitudinal axis substantially parallel to the plane of said floor portion when said dump body is in the lowered position, and a motor drivingly connected to said linear drive transmitting means, the arrangement being such that when the dump body is in the lowered position actuation of the motor causes the bell crank member to be rotated about its support means so that said one arm moves along the track and causes the dump body to be raised to a partially raised position after which said other of said arms contacts the underside of the dump body to complete the raising of the dump body to the fully raised position.