Adapter for power tool installation of tangless helically coiled insert

Abstract From the Canadian patent

A power-driven insertion tool for a helically coiled wire insert of the type used for tapped holes in parent material that is generally softer than a fastener being screwed into the tapped hole, whereby a mandrel having a threaded lead portion and a pivotal paw inserted in a groove below the threaded portion so that the paw engages a recess of the insert in order that the, insert may be screwed into the tapped hole. A sleeve concentric, to the threaded mandrel, maintains the insert's helix angle for a smooth transition into the tapped hole. An adjusting nut adjusts the depth to which an insert may be installed and whereby a free spinning bearing contacts the parent material and …