Multiple belt conveyar with synchronizer

A belt conveyor for moving roofing tiles or the like comprising an elongated body member, guide roller means on each end of the body member, a pair of narrow endless parallel conveyor belts passing over and guided by said roller means, at least one pusher lug on the surface of each of the belts, at least one magnetic position indicator means on each belt, the guide roller means on one end of said body including separate rollers for each belt, a drive shaft on the one end of said body, motor means for driving said shaft, said separate rollers on the said one end of the body being freely rotatable on said shaft clutch means for drivingly and independently connecting each of said rollers on the said one end to said shaft, electromagnetic means for operating said clutch means, stationary magnetic control means for sensing the proximity of said magnetic position indicator means, and synchronizer means acting in conjunction with said magnetic control means and said electromagnetic means to automatically synchronize the two belts to maintain the pusher lugs thereon directly opposite to each other.