Patent ID: 7520380

Claim:
An adjustable width guideway assembly for use in a conveyor for conveying articles having different widths, the assembly comprising: a first moveable guide and a second guide parallel to said first guide, said first and second guides defining the guideway therebetween; a series of actuators attached to said first guide, each of said actuators including a pneumatic piston traveling between a disengaged position and an engaged position for moving said first guide towards or away from said second guide between a first and second position; and a stop mechanism including a series of moveable striker plates cooperating with said series of actuators for limiting travel of each corresponding piston between at least two selectable positions so as to move said first guide towards or away from said second guide between said first position and said second position and at least one intermediate position; wherein said stop mechanism comprises at least two adjusting pins mounted to each corresponding actuator, and wherein each striker plate is moveable such that when each corresponding actuator is in said engaged position only one of said adjusting pins is in contact with each striker plate.