Halogen filament lamp

Claim 1

A method of manufacturing a tubular halogen filament lamp of the type which is sealed at either end by a pinch seal and has a longitudinal filament connected to foils embedded in the pinch seal, which foils are each connected to a lead-in conductor which emerges from the lamp, the filament being supported in at least one place by a part of a supporting wire which similarly extends longitudinally within said lamp, said wire also being embedded at either end, said method comprising the steps of: coupling a first chain of elements including a filament, foils secured to either end of said filament, and lead-in conductors secured to said foils; coupling a second chain of elements and orienting it substantially parallel to said first chain, said second chain including a wire supporting said filament in at least one place and a pair of meltable metal members positioned approximately opposite said foils; surrounding said two chains by a tubular glass member which is shorter than the length of each chain; forming pinch seals at either end of said tubular member, thereby embedding the foils and melting and embedding the meltable members in said pinch seals; evacuating said resulting lamp vessels through a lateral exhaust tube; filling said lamp with an appropriate gas; and sealing said lamp.