Conveyor lift

A conveyor lift having a device for engaging a product to transfer the product from a conveyor at one level to a conveyor at another level wherein the lift is driven by at least one drive comprising a motor, and a coupling to couple the motor to the lift wherein the coupling comprises a clutch comprising a pair of drive members which are relatively rotatable about, and axially movable along, an axis, a relievable biasing device to bias the drive members axially towards each other so as to be disengageably connected in torque transmitting relationship and a relieving element operable to release the biasing device to interrupt transmission of said torque and the coupling also incorporating a torque indicating device comprising first and second torque transmitting parts, torque transmitting elements connecting said first and second parts, the device being rotatable about the axis and having torque sensing apparatus on at least one of said torque transmitting elements and responsive to torque transmitted by said torque transmitting apparatus to provide a signal dependent upon said transmitted torque.