Patent ID: 7192236

Claim:
A shelf stacking machine for storing and retrieving paper reels, which is movable in an aisle between storage positions on both sides that hold paper reels stored above one another and spaced apart in the longitudinal direction of the aisle, and has a fork for carrying paper reels, characterized in that said fork ( 1 ) is vertically pivotable around a horizontal axis ( 6 ) and comprises at least one measuring device ( 7 ) that detects the carrying load of a picked-up paper reel (P), said machine further comprising an actuator ( 8 ) coupled to said at least one measuring device to receive detected measuring data indicating the load carried by said fork, said actuator ( 8 ) being coupled to said fork ( 1 ) to vertically pivot said fork ( 1 ) into a horizontal position in accordance with the measuring data and to hold said fork in this horizontal position during transport of the paper reel.