BEHALLARE FOR INRYMNING AV SMELT MINERALMATERIAL, EXEMPELVIS GLAS, FRAN VILKET FIBRER KAN UTDRAGAS

摘要

A support is provided for a bushing containing heatsoftenable material from which fibers are attenuated through tips in the bottom wall of the bushing. Especially with larger bushings and those used to melt heat-softenable material requiring higher temperatures, the bushing bottoms tend to sag or creep over a period of time. To overcome this, a bushing is provided with a plurality of internal supports connected to the bottom and supporting the same against sag or creep. The supports can be in the form of tubes extending between side walls of the bushing with connecting members joining the tubes to the bushing bottom wall. In a preferred form, refractory rods are extended through the tubes for additional support.