Apparatus for unplugging a vessel discharge port

Details Apparatus for unplugging a vessel discharge port Apparatus for unplugging a vessel discharge port

1986-11-14

1988-05-24

Rolla, Joseph J.

Dispensing

Molten metal dispensing

222603, 266271, C21C 548

Patent

active

047460377

ABSTRACT:
The unplugging apparatus includes a conduit which extends through the wall of an annular member to a generally cylindrical lance housing disposed within the annular member. The upper end of the lance housing is disposed above and proximate the elevation of the conduit. A bushing is disposed within the housing at its upper end and guides upward movement of a tube which is partially disposed within the housing. The tube carries a charge of combustible material and has an upper end disposed outside the housing and a bottom flared portion disposed within the housing. The bushing defines a stop surface for the bottom flared portion of the tube. A combustible collar is mounted on the tube upper end and surrounds a portion of the charge of combustible material which extends past the tube upper end.

REFERENCES:
patent: 247855 (1881-10-01), Smalley
patent: 3770200 (1973-11-01), Bauer et al.
patent: 4450986 (1984-05-01), Harasym et al.

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