Abstract: A tool holder in which the holder comprises a support member with a block detachably mounted in a notch on one end of the support member and with the block having insert receiving pockets for mounting cutting inserts therein. Cooperating ribs and grooves locate the block on the support member and a clamp member carried by the support member extends upwardly through a slotted portion in the block and has a head for clampingly engaging said block.

Abstract: A turning tool for use in metal machining having a holder with a first recess for receiving an insert carrier therein. The insert carrier has a second recess for receiving a cutting insert therein. The insert carrier has a planar base face and a generally semicylindrical supporting surface engaging a corresponding semicylindrical support surface in the first recess on the holder. Holding screws are provided for securing the insert carrier to the holder and for securing the cutting insert to the insert carrier. The semicylindrical support surface on the insert carrier is continuous over the side edge thereof and the corresponding semicylindrical support surface in the recess on the holder are both continuous from a base surface to simplify the machining thereof. In addition, the support surfaces effect a good transmitting of forces between the respective components to enhance the durability of the tool.

Abstract: A wedge arrangement for removably affixing a work tool or work tool holder to a base member on mining, road working or earth moving machinery, and the like, and being particularly useful in the mining, road planing and earth digging areas. The arrangement is such that the removable member may be readily replaced and wear and tear on the base member greatly reduced to the extent that such base member will not be destroyed or otherwise rendered useless; such base member may be a part which is permanently secured to the basic machine or it may in fact be the machine itself or some integral part thereof. The base member is preferably provided with a slot of a size sufficient to receive both the removable member and a wedge element; such member and element may be placed within the slot from above thereof, lateral entry of the removable member and wedge element into the slot often being unnecessary.