Patent ID: 7083513

Claim:
A portable apparatus for removing deleterious gasses and airborne particulate material from an electric welding site on an interlocking closed track railway system without disabling the system, comprising in combination: a peripherally defined funnel-like collection head having a first end defining an areally larger input orifice and a second end defining an areally smaller output orifice; an electrically non-conductive, configurationally sustaining dispersement tube having a medial channel defined by a smooth lineally elongate ruled surface with a first output end and a second input end structurally carrying the second end of the collection head; powering structure carried by the dispersement tube and extending into the medial channel defined thereby, said powering structure having; a connecting nipple for interconnection to an external source of pressurized non-combustible gas, an adjustment valve to regulate flow of pressurized non-combustible gas to an input nozzle, an input nozzle carried in the medial channel defined by the dispersement tube to disburse pressurized gas in a direction toward the first output end of the dispersement tube, conduits pneumatically interconnecting the connecting nipple, the adjustment valve and the input nozzle; and means for supplying pressurized gas to the connecting nipple.