Ronald J Mathews

US Patent:

50058070, Apr 9, 1991

Filed:

Apr 4, 1990

Appl. No.:

7/504603

Inventors:

Ronald J. Mathews - Valencia PA
Robert T. Woodings - Pittsburgh PA

Assignee:

Woodings Industrial Corporation - Mars PA

International Classification:

C21C 548

US Classification:

266271

Abstract:

An improved extension bar for a drill rod assembly on a blast furnace tap hole drill having an increased diameter sufficient to occupy a significant portion of tap hole drilled so as to minimize the volume of blast furnace hot metal that can emerge from the blast furnace before the striking bas assembly can be removed, and having a protective sleeve portion at the rearward end thereof to shield and protect the interface between the drill rod and extension bar to prevent such interface from being exposed the hot metal and thereby avoid the possibility that they could become welded together.

US Patent:

51692562, Dec 8, 1992

Filed:

Oct 26, 1990

Appl. No.:

7/603602

Inventors:

Robert T. Woodings - Pittsburgh PA
Ronald J. Mathews - Valencia PA

Assignee:

Woodings Industrial Corporation - Mars PA

International Classification:

F16D 100

US Classification:

403 24

Abstract:

The component parts of a drill rod assembly on a blast furnace tap hole drill are joined together by providing a unique threaded coupling in which the threads do not torque tightly against each other but maintain a loose, floating relationship to thereby permit the coupling to be threaded together by hand without the use of a wrench, and such that the drilling action of the percussion drill will maintain the components in a joined relationship.

US Patent:

50694308, Dec 3, 1991

Filed:

Oct 26, 1990

Appl. No.:

7/603603

Inventors:

Robert T. Woodings - Pittsburgh PA
Ronald J. Mathews - Valencia PA

Assignee:

Woodings Industrial Corporation - Mars PA

International Classification:

C21C 548

US Classification:

266271

Abstract:

A blast furnace tap hole drill is provided having an elongated feedshell which supports a percussion drill, drill rod assembly, and a centralizing drill rod support disposed between the percussion drill and a stationary forward end drill rod support, and a drive means for advancing the percussion drill and centralizing drill rod support in unison along the length of the feedshell such that the advancing motion of the centralizing drill rod support ceases as it nears the forward drill rod support without stopping the advancing motion of the percussion drill.