Hydrotherapy apparatus conveyer raising and lowering

A hydrotherapy apparatus comprising:

• a tank;
• a conveyer mounted within the tank, the conveyer comprising a belt and a drum, wherein the belt is arranged to be driven by rotation of the drum and the drum comprises a drive shaft extending therefrom, and a conveyer frame extending from the drum, perpendicular to the drive shaft, and arranged to keep the belt under tension, the drum being rotatably mounted on the conveyer frame, wherein the conveyer is arranged to be rotatable around the axis of the drive shaft;
• a pair of bearing housings fixedly mounted on the tank and extending into the tank, each bearing housing of the pair of bearing housings being arranged to rotatably receive a portion of the drive shaft, and having a cylindrical portion extending around the portion of the drive shaft;
• and
• a pair of blocks fixedly mounted on the conveyer frame, each block of the pair of blocks comprising an aperture therethrough arranged to receive a respective bearing housing of the pair of bearing housings and portion of the drive shaft, and wherein each of the blocks is adjustable between:
• (i) a first configuration in which the aperture is sized to receive the cylindrical portion of the respective bearing housing;
• and
• (ii) a second configuration in which the aperture is restricted to grip the outer surface of the cylindrical portion of the respective bearing housing, so impeding rotation of the conveyer.