A jawed, lathe chuck, according to claim 1, wherein: Said opening in said body comprises a means for providing access to said drive head, by a tool, for threadedly turning said fastener (a) to move the latter into said opening, or (b) to move the fastener into said recess.Ħ. Said threaded fastener has a drive head, engageable by a tool for threadedly turning said fastener in said threaded hole and A jawed, lathe chuck, according to claim 3, wherein: Said fastener has a length greater than said given length.ĥ. Said threaded hole has a given length and Said rotation-preventing means comprises a threaded fastener threadedly engaged with said threaded hole.Ĥ.

Said jaw carrier has a threaded hole formed therein and therethrough from said inner surface thereof to said outer surface thereof and A jawed, lathe chuck, according to claim 2, wherein: Said rotation-preventing means is movable into said recess, and into said opening, to cause said hub and said jaw carrier to be locked together, and to cause said jaw carrier and said body to be locked together, respectively.ģ. Said body has an opening formed therein and therethrough from an outer surface thereof to an inner surface thereof which defines an interface with an outer surface of said jaw carrier and Said hub has a recess formed in an outer surface thereof which defines an interface with an inner surface of said jaw carrier Means mounted in said jaw carrier, and engageable with said hub and said body, selectively operative in a first mode for prohibiting relative rotation between said hub and said jaw carrier, and selectively operative in a second mode for prohibiting relative rotation between said jaw carrier and said body.Ģ. Means carried by said body, and engageable with said jaws, for causing said jaws to pivot, upon said jaw carrier and said body executing relative rotation therebetween and Means carried by said hub, and engageable with said jaws, for causing said jaws to pivot, upon said hub and jaw carrier executing relative rotation therebetween Said jaw carrier is journalled in said body for accommodating relative rotation between said jaw carrier and said body and further including Said hub is journalled in said jaw carrier for accommodating relative rotation between said hub and said jaw carrier and The jaws have a first plurality of camming surfaces for operative engagement with the drive pins in the body, and a second plurality of camming surfaces for operative engagement with the drive pins in the hub.Ī jaw carrier, having a plurality of equally-spaced apart jaws pivotably coupled thereto and In the prior circumstance, the drive pins of the body are operative to move the jaws inwardly or outwardly in the latter circumstance, the pins of the hub are operative to move the jaws as noted above. A screw carried in the jaw carrier is movable into the hub, to lock the hub and jaw carrier together, and movable into the body, to lock the body and the jaw carrier together. The carrier pivotably mounts a plurality of jaws having camming surfaces, and drive pins upstanding from the hub and the body slidably engage the camming surfaces to move the jaws outwardly, to engage the inner surface of a workpiece, or inwardly, to engage the outer surface of the workpiece. In the embodiment shown, the chuck comprises a hub rotatably journalled in a jaw carrier, and the latter rotatably journalled in a body.

Mosley pivot polisher