Improvements in Water Heaters and Means for Regulating or Controlling the Gas Supply to same.

Реферат: 7007. Winterflood, J., and Ewart & Son. March 23. Water-heaters, gas.-A water-heater, consisting of a casing in which a boiler is mounted above a gas burner, is provided with means whereby the gas supply is controlled by the water-outlet valve. Within a cylindrical casing 1, the upper part of which forms a water tank 6 and the lower part an annular water space, is concentrically arranged a second double-walled water space 3. The space 3 communicates with the water tank 6 and with the lower annular water space by pipes 8. Placed concentrically within the water space 3 is a double cylindrical tube 4, having its outer wall brought out to meet the inner wall of the casing 1 and its inner wall carried up to form a flue through the water tank 6. A gas heating-device 9 is located in the lower part of the casing 1, so that the products of combustion may pass, as shown, round both sides of the water space 3. The water tank 6 is provided with a ball inlet valve, from which a pipe 10 leads to the annular space of the casing 1. Fig. 1 shows one arrangement by which the water-outlet valve 11 controls the gas-supply valve 15. The plugs of the valves are provided with levers, which are connected by links to arms at opposite ends of a pivoted rod 20. 41