Gas-cooled torch lamp

Claim 1

In an infrared heating device having a. A base, b. a lamp attached to the base emitting infrared rays, c. a reflector surrounding the lamp for focusing the infrared rays upon work to be heated, d. a filter attached to the reflector for blocking the light rays and passing the infrared rays, and e. a power source of electricity for the lamp; f. THE IMPROVED STRUCTURE FOR COOLING THE APPPARATUS COMPRISING: g. switch means attached to the base for connecting the lamp to the power source, h. a shroud surrounding the reflector, j. a passage between the shroud and reflector for cooling gas flow, jj. filter openings from the passage at the filter, kk. said filter openings forming means operatively associated with the shroud for directing the gas over the outside of the filter to also cool the filter, mm. an opening between the lamp and reflector for flow of cooling gas between the lamp and reflector, nn. said flow of cooling gas between the lamp and reflector also flowing on the inside of the filter and said filter openings, k. a source of cooling gas under pressure, m. a valve attached to the base, n. gas conduits connecting the gas source to the valve and the valve to the passage, and o. detecting means attached to the base and associated with one of said gas conduits for detecting a flow of gas from the gas source to the passage, and p. means responsive to said detecting means for actuating said switch means to energize said lamp when the cooling gas is flowing to the passage from the source and to de-energize said lamp when the flow of cooling gas ceases.