Heater and gas burner therefor

Claim 1

A HEATER COMPRISING: MEANS FOR SUPPLYING A FLUID COMBUSTIBLE SUBSTANCE TO SAID HEATER; A BURNER HAVING FIRST AND SECOND WALL MEANS DEFINING A VERTICALLY DISPOSED PORT THEREBETWEEN HAVING A CONNECTION WITH SAID COMBUSTIBLE SUPPLY MEANS, ONE END OF SAID FIRST AND SECOND WALL MEANS TERMINATING AT SAID PORT, ONE OF SAID WALL MEANS CLOSING ON ITSELF TO DEFINE ON THE SIDE THEREOF AWAY FROM SAID PORT A SUBSTANTIALLY UNRESTRICTED PASSAGEWAY FOR THE ADMISSION OF COMBUSTION SUPPORTING FLUID TO THE ZONE OF COMBUSTION; AND A HEAT EXCHANGER HAVING A VERTICALLY DISPOSED WALL WITH ONE END CONTIGUOUS TO BUT DISPLACED FROM SAID BURNER PORT, THE DISPLACEMENT OF SAID WALL AND PORT DEFINING A FURTHER SUBSTANTIALLY UNRESTRICTED PASSAGEWAY FOR THE ADMISSION OF ADDITIONAL COMBUSTION SUPPORTING FLUID TO THE ZONE OF COMBUSTION, THE ARRANGEMENT OF SAID BURNER AND HEAT EXCHANGER BEING SUCH THAT THE COMBUSTIBLE SUBSTANCE ISSUING VERTICALLY FROM SAID PORT FLOWS ALONG SAID HEAT EXCHANGER WALL WHEREUPON THE FLAME OCCASIONED BY COMBUSTION OF SAID COMBUSTIBLE SUBSTANCE AND SAID COMBUSTION SUPPORTING FLUIDS IS PROPAGATED SUBSTANTIALLY ENTIRELY ADJACENT AND ALONG SAID HEAT EXCHANGER WALL, WHEREBY SUBSTANTIALLY ALL THE USEFUL HEAT OF THE FLAME IS IMPARTED TO SAID HEAT EXCHANGER WALL.