Charles Errani and Richard Anders had been granted US Patent No. 149,021 on 1 August 1872.  In their US patent they point out that their engine is similar to a conventional steam engine with a cylinder and a piston. Their invention is to use petroleum reduced to a spray, and mix it with atmospheric air for combustion in a cylinder.




1. The combination, with cylinder A and piston B, of the spraying device M, for producing motive power by or from any suitable hydrocarbon liquid, sprayed within the cylinder, and mixed with air, and subsequently ignited within the cylinder.

2. The combination of the electric igniter P, with the spraying device M, the piston B and the cylinder A of the motor, substantially as specified.

3. The blower K, in combination with the spraying device M, the tank N, the piston B, and the cylinder A, essentially as described.

4. The tank N, in combination with the wind chamber e, the fluid tube f, of the spraying device M, the piston B, the cylinder A, and the blower K, substantially as specified.

Only patent related information can be found in the so far digital available journals about Charles Louis Errani. It looks like Errani never exhibited, or even built his engine. As from 1870 on the official communications are addressed to the widow Charles Errani, he probably died shortly after he had filed for his patent. As Richard Anders is mentioned only after 1870 it might be that the patent rights were transferred to him after the decease of Charles Errani.