Hand actuable clamping device

摘要

A clamping mechanism is configured for receipt on a threaded drive spindle to hold a working tool relative to the drive spindle. The mechanism includes a flange surface disposed to abut against a working tool in an operational mode of the device, and a rotatable member configured with the flange surface and disposed to advance the flange surface upon manual rotation thereof. The rotatable member includes at least one manual tightening device or mechanism for effectively increasing the manual tightening torque.