Abstract: Method and apparatus are disclosed for forming fibers from attenuable materials, especially mineral materials such as glass, the disclosed technique including components providing for attenuation by toration, i.e., attenuation by delivering a stream of attenuable material in attenuable condition into the zone of interaction of a gaseous jet penetrating into a larger gaseous blast.

Abstract: Method and apparatus are disclosed providing both for separation of the components of a toration fiberizing center, including separation of both the glass stream supply means and of the secondary or carrier jet from the blast, and at the same time further providing for stabilization of the feed of the glass into the system, notwithstanding the separation of the components. This is accomplished by shielding the jet flow from induced air at one side of the jet and introducing the glass stream into the influence of the induced air at the opposite side of the jet.

Abstract: Multiple jet fiber attenuation, the jets converging to provoke mutual impact and create a combined jet flow, the jets comprising fuel and comburent components in proportions providing a combustible mixture in the combined jet flow, a stream of attenuable material being delivered into the combined jet flow and providing for ignition of the combustible mixture in a localized zone and thus for attenuation at elevated temperature in said zone.