Method and apparatus for opening blast-furnace tap holes

Details Method and apparatus for opening blast-furnace tap holes Method and apparatus for opening blast-furnace tap holes

1982-01-20

1984-03-13

Rosenberg, Peter D.

Metallurgical apparatus

Process

Plugging or tapping

75 41, 75 42, 266271, C21C 548

Patent

active

044362854

ABSTRACT:
An improvement upon the apparatus and method disclosed in U.S. Pat. No. 4,273,202. To avoid loss of the drilling bit, a quick-change coupling apparatus is provided between the striking bar, on the one hand, and either the drill rod or poking bar, on the other.

REFERENCES:
patent: 2005143 (1935-06-01), Hogg
patent: 2563131 (1951-08-01), Old
patent: 3201225 (1965-08-01), Haynes

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