Walter Neil Rossborough

US Patent:

40848000, Apr 18, 1978

Filed:

Feb 17, 1976

Appl. No.:

5/658272

Inventors:

Douglas Earl Butts - Brook Park OH
Walter Neil Rossborough - Rocky River OH

Assignee:

Rossborough Supply Company - Cleveland OH

International Classification:

C21C 700

US Classification:

266225

Abstract:

A thermally stable lance for injecting particulate material into molten metal is provided which comprises an elongated thermal insulating member having spaced apart first and second ends and at least one wall therebetween defining the member; a reinforcing rod axially disposed in the insulating member with one end of the rod extending beyond the first end of the insulating member, the rod having a plurality of outwardly extending protrusions in contact with the said insulating member; a length of wire wound around the reinforcing rod which is in contact with the insulating member; and a hollow injection tube having spaced apart first and second ends axially disposed in the insulating member with the first end thereof extending beyond the first end of the insulating member and the second end extending beyond the second end of the insulating member.