#$%^&*AU2015246063A120160505.pdf#####ABSTRACT A head bail assembly comprising a main support frame including an overhead support, a pair of head bail arms capable of advancing and retracting responsive to an operating mechanism. The operating mechanism is supported and at least partially retained by the overhead support. The operating mechanism includes an operating handle which advances and retracts the head bail arms, a pawl and co operating ratchet plate and an adjustment assembly having a first member with abbreviations to define separate recesses and a second member whose first end engages the first member via one of the separate recess. The second member is capable of pivotal rotation relative to the first member as the operating handle is rotated and the pawl selectively engages the ratchet plate when the handle is rotated in one direction.I48 \P-7 474 - ---------
