HAWK

POWER OPERATED PIPE TURNING TOOL FOR TURNING OIL WELL PIPE ABOUT THE LONGITUDINAL AXIS THEREOF FOR MAKING AND BREAKING OF JOINTS IN THE PIPE; MACHINES FOR ROTATING PIPE ABOUT THE LONGITUDINAL AXIS THEREOF IN ORDER TO THREADINGLY CONNECT AND DISCONNECT PIPE SECTIONS TO AND FROM EACH OTHER; MACHINES FOR SPINNING OIL WELL PIPE ABOUT THE LONGITUDINAL AXIS THEREOF; AND PORTABLE PNEUMATIC POST-DRIVING APPARATUS FOR DRIVING FENCE POSTS INTO THE GROUND