Patent ID: 8141385

Claim:
A method of operating a blow head mechanism, the blow head mechanism including support means for supporting a blow head assembly, a blow tube selectively displaceable between an up position and a down position, and displacement means for displacing the blow head assembly and the blow tube, the method comprising: displacing the blow head assembly between a remote “off” position and an advanced “on” position; displacing the blow tube from its up position down to its down position and then back up to its up position; displacing the support means by first displacement means to displace the blow head assembly between its remote “off” position and its advanced “on” position; displacing the blow tube by second displacement means including a profiled displacement actuator; and controlling the profiled displacement actuator in accordance with a displacement profile so as to displace the blow tube from its up position down to its down position and then back up to its up position a plurality of times during the time that the blow head assembly is at its “on” position.