Kennametal Inc.

Edward L Sorice

Dennis G Jones

George G Barkley

An adjustable head arrangement for the shank of a boring bar is disclosed having an easily replaceable tool unit and also having an axially adjustable abutment means on the tool unit so that the cutting point of the tool unit is firmly supported and held during cutting operations but is adjustable with respect to the shank of the boring bar in between different cutting operations.

Adjustable boring bar

A cutting insert, especially for milling operations, in which at least one face of the insert has recesses extending from respective corners thereof along respective edges of the inserts. The recesses widen in a direction away from the respective corners and are generally 'V' shaped in cross section. The walls forming the bottom of the insert are in the form of skewed planes and make increasing included angles with the respective face of the insert in a direction away from the respective corner of the insert. The recesses at the wider ends have a concave wall portion extending upwardly to the respective face of the insert.

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Crabtree, PA, United States of America

Edward L Sorice