Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1978-01-11
1979-05-22
Lindsay, Jr., Robert L.
Glass manufacturing
Processes
Forming product or preform from molten glass
13 6, 65 11W, 65356, 65374M, C03B 3702
Patent
active
041557310
ABSTRACT:
In apparatus for heat-softening and attenuating glass material into fibers, an improved low temperature electrical resistance bushing having extremely thin side walls and other electricity conducting components running from end to end in the bushing, relative to the base plate for both direct and marble-melt bushings. The thin side walls enable a low temperature bushing to operate with temperatures less than 2250.degree. F., because the thin side walls draw proportionately less current than the base plate. Additional improvements for providing a low temperature bushing include, for a marble-melt bushing, a funnel which is mounted on the top wall and a cooling tube mounted adjacent a bottom portion of the funnel. Another improvement includes the use of auxiliary end plates mounted adjacent the end walls of the bushing for channeling electrical current to the base plate. A further improvement in a marble-melt bushing includes the provision of opposed side walls which are inclined outwardly as well as extend upwardly from the base plate. Upper side wall sections are inclined inwardly from an associated side wall. The result is a construction in which a bridge of glass material may be supported somewhat by the side walls.
REFERENCES:
patent: 2489508 (1949-11-01), Stalego
patent: 3492104 (1970-01-01), Glaser
patent: 3511916 (1970-05-01), Sinclair et al.
patent: 3536470 (1970-10-01), Britchard et al.
patent: 3920430 (1975-11-01), Carey
patent: 3972702 (1976-08-01), McCormick et al.
patent: 3988135 (1976-10-01), Coggin
patent: 4026689 (1977-05-01), Higginbothom
Byrnes Gregory W.
Ralls Richard E.
Lindsay, Jr. Robert L.
The Greickor Company
LandOfFree
Fiber forming bushing construction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fiber forming bushing construction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber forming bushing construction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1038474