EMPLOYEE STATED THAT HE WAS WATCHING THE BELT FOR A BAD SPLICE IN THE TAKE UP AREA. THE TAKE UP CART HAD KNOCKED THE GUARD BACK ABOUT 3 FT. EMPLOYEE STATED THE BELT WAS SHUT OFF TO MAKE A SP LICE; HE PUT HIS HAND ON THE TAKE UP RAIL TO GET UP. THE TAKE UP CART RAN OVER HIS RING AND PINKY FINGER OF THE LEFT HAND.