Adjustable transfer mechanism for conveyors

A method of operating a power and free conveyor system including an adjustable transfer mechanism, the method comprising:

• providing a first power track that extends along a conveyor path defined by a free track and subsequently diverges from the conveyor path to define a drop-off point whereby a first drive member of the first power track disengages from driving a first trolley positioned on the free track;
• providing a second power track that converges toward the conveyor path to define a pick-up point whereby a second drive member of the second power track engages with the first trolley positioned on the free track;
• operating an adjustment mechanism to adjust a spacing between the drop-off point and the pick-up point by re-positioning a section of at least one of the first and second power tracks within the adjustable transfer mechanism so that a distance between the drop-off point and the pick-up point is increased or decreased;
• and
• operating the first power track and the second power track to transfer a subsequent trolley therebetween with the adjusted spacing between the drop-off point and the pick-up point.