High pressure forming bushing and fin cooler
AssigneePPG Industries, Inc.
InventorThomas H. Jensen
Life of this patent
Estimating the term…
Abstract
A high pressure glass fiber forming bushing and cooperating fin cooler assembly are disclosed. The bushing is provided with a corrugated tip plate which carries the nozzles or tips through which the glass fiber is forced by a pump or other pressure creating means. Additionally, the tip plate is provided with recesses which extend across the tip plate transversely to the corrugations. A cooperating fin cooler is secured beneath the tip plate to cool the filaments and to provide support for the tip plate. The fins of the fin cooler are arranged parallel to the corrugations in the tip plate. A plurality of ceramic rods are carried by the fin cooler and extend transversely to the fins and coincident with the recesses in the tip plate. These ceramic rods are received in the recesses to provide support for the tip plate.
Claims17
A high pressure glass forming bushing and fin cooler assembly for forming glass filaments under elevated pressure, said assembly comprising a bushing for receiving molten glass, said bushing including a tip plate having nozzles through which said glass is forced to form the filaments;
- corrugations on said tip plate which include valleys and crests, said filament forming nozzles carried on said crests, recesses in said tip plate transverse to said corrugations, said recesses being filled with insulation, ceramic rods carried on a fin cooler having a plurality of spaced cooling fins thereon, said fin cooler being secured beneath said bushing and the ceramic rods contacted by said tip plate at the recesses when said fin cooler is secured beneath said bushing to thereby supply support to the said bushing.
A bushing for high pressure glass fiber forming apparatus, said bushing comprising spaced sloping sidewalls, said sidewalls being carried by a frame secured by said apparatus, a tip plate extending generally horizontally between said sidewalls, said tip plate carrying a plurality of nozzles through which said glass is forced to form filaments, cooperating corrugations and recesses formed on said tip plate, said corrugations on tip plate including valleys and crests with the plurality of nozzles being carried on said crests and the recesses on said tip plate being transverse to said corrugations, said corrugations and recesses thereby increasing the strength of said tip plate.
A fin cooler for use in a high pressure glass filament forming apparatus wherein said glass filaments are formed by passage of molten glass through nozzles carried by tip plate of a bushing, said fin cooler comprising first and second spaced manifolds, each of said manifolds having a coolant liquid flow conduit and a coolant gas flow chamber therein, a plurality of spaced fin plates extending between said manifolds and secured thereto for heat transfer therewith, a means on the upper surface of said fin cooler to carry ceramic rods for contact with the tip plate when the fin cooler is secured to said bushing, and means on the tip plate of the bushing to receive the ceramic rods carried by the fin coolers.
The fin cooler of claim 9 wherein said ceramic rods are carried on said fins in said cut-outs.
Dependencies are inferred from the claim text.