Rotisserie driven by hot air thermal engine

A rotisserie comprising a heat source for creating a heated cooking region, a hot air engine comprising at least cylinders, each cylinder comprising an air-filled chamber disposed adjacent the heated cooking region, said air filled chamber further comprising a drive piston displaceable within the chamber when the air is heated, each drive piston connected to a drive piston rod which extends through the wall of the cylinder, to make a pivot-able connection to an engine shaft peripheral to the cooking region, such that the phased displacement of the drive piston rods turns the engine shaft, and a spit shaft, fixedly connected to a spit disposed within the cooking region, said spit shaft extending to, and attached to the engine shaft such that turning of the engine shaft rotates the spit shaft.

A rotisserie comprising a spit shaft geared to the engine shaft of a hot air engine comprising at least two air-filled cylinders, each cylinder having a drive piston displace-able by heated-air, each drive piston connected to a drive piston rod which extends through the wall of the cylinder to make a pivot-able connection to the engine shaft, such that the phased displacement of the drive piston rods turns the engine shaft, which rotates the spit shaft.

A thermal driven spit for cooking, the spit being driven by the heat supplied for the cooking.