Adjustable Arc Cam

A cam assembly comprising:

• a plurality of cams, each cam having a first side, a second side opposite the first side, an outer perimeter and a thickness between the first and second sides, each cam further having a first elongated bore through the first and second sides and the thickness of the cam, wherein the first elongated bore has a length radially oriented in the cam and a first end and a second end, each cam further having an elongated threaded hole extending from the outer perimeter to and being in communication with the first elongated bore, wherein the length of the first elongated bore and the elongated threaded hole are linearly aligned;
• a drive shaft extending through each of the first elongated bores;
• and
• a plurality of adjustment screws, one adjustment screw being within the elongated threaded hole of each cam and engaged with the drive shaft, wherein the cam assembly is constructed and arranged such the drive shaft can be adjustably positioned and fixedly secured relative to each of the cams at a plurality of positions along the length of each first elongated bore.