Method and apparatus for installing or replacing a furnace tap hole insert
AssigneeLouis A. Grant, Inc.
InventorsLouis A. Grant JR., Albert J. Kristoff
Life of this patent
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Abstract
An apparatus for replacing a tap hole insert in a furnace includes a drill detachably mounted to a drive shaft in a boom arm of a utility machine with the drill adapted to remove the existing tap hole inserts to be replaced from outside of the furnace interior, and a tap hole insert tool detachably mounted to the boom arm of the utility machine with the tap hole insert tool adapted to hold and insert tap hole inserts into the furnace tap hole from outside the furnace interior. The drill is provided with a locking pattern having alternating inserts.
Claims2
A self-centering drill detachably mounted to a utility machine, the drill adapted to remove an existing tap hole insert to be replaced from outside of a furnace interior, the drill comprising a cylindrical base with a plurality of cutting teeth positioned at a forward end of the base, wherein each of the cutting teeth is a rotatable cutting insert positioned in a cutting insert body along a longitudinal axis, wherein the positioning of the cutting faces of the inserts and the positioning longitudinal axes of the cutting inserts define a lacing pattern for the drill and wherein the lacing pattern is defined by alternating adjacent inserts between having the longitudinal axis and the cutting faces of individual inserts face radially inwardly of the cylindrical body and having the longitudinal axis and the cutting faces of individual inserts face radially outwardly of the cylindrical body.
Dependencies are inferred from the claim text.