| http://www.w3.org/ns/prov#value | - A mechanism according to claim 16, wherein the means for swinging the drive link fore and aft includes a rotary actuator spaced forwardly of the drive link, said actuator including a depending arm, a push rod having forward and aft ends, means pivotally attaching the forward end of the push rod to a lower portion of the arm, and with the aft end of the push rod being pivotally attached by the sixt
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