Fuente: WIPO "rice" 136,542. Rice, A. S. Dec. 7, 1918, [Convention date]. Heating by electricity.-In a portable waterheating apparatus, particularly adapted for use on motor-vehicles, the heat required is derived from an internal-combustion engine both directly from the cylinder jackets and indirectly by means of electric heaters supplied with current from a generator driven by the engine, further heat, if desired, being derived from the exhaust gases. In the construction shown, which is applied to a motor-car, a clutch 38 is employed so that the transmission shaft 3 can be connected either to the rear drive 4 when the vehicle is running or to the generator 34 when the vehicle is stationary. In the former case, the water from the tank 14 is used in the ordinary way for cooling the engine 2 by circulating through an outflow pipe 9 to a pump 10, thence by a pipe 11 to the cylinder jackets, thence by a pipe 12 to the radiator 8, and returning by a pipe 13 to the tank. When the vehicle is stationary, and hot water is required, the radiator 8 is cut out of the circuit by means of a threeway cock 27 in the pipe 12, and the water returns by a pipe 26 to the tank 14. Arranged in or around the pipe 9 is an electric heater 31, and in or around the pipe 26 an electric heater 32 and an additional heater 22 warmed by the exhaust gases passed through a pipe 17. The exhaust gases may be by-passed by a three-way cock 18 through a short pipe 19, so that no heating at all occurs when the vehicle is running. In order to fill the tank 14 initially, the pipe 9 is connected by a three-way cock 23 to a supply pipe 25, the water flowing through the pump 10, pipe 11, cylinder jackets, and pipe 26 to the tank 14, which it reaches in a slightly heated state. Instantaneously heated water may be drawn off from the pipe 26 through a hose pipe 30 which is connected as an alternative to the tank 14 to the pipe 26 by means of a three-way cock 28.