for changing the cans is arranged only for changing the can to one side in this case to the left the connection 29 between the carriage 22 and the toothed belt 24 is mounted on the right hand side of the carriage 22 the carriage 22 carries one deflection roller 30 and 31 on its right and left ends respectively a toothed belt 32 is wrapped around these two deflection rollers 30 and 31 viewed in the outward thrust direction 33 of the carriage 22 a fastening 34 of the toothed belt 32 to the undercarriage 38 is located just before the deflection roller 28 the toothed belt 32 is part of the apparatus 23 for displacing a can on the carriage 22 to that end the apparatus 23 further includes a means 35 for manipulating a can it is supported slidingly on the carriage 22 and as identified by reference numeral 36 is firmly joined to the toothed belt 32 in the present exemplary embodiment the means 35 for manipulating the cans is a magnet that can be turned on it enters into operative connection with a magnetizable metal plate 37 mounted on the face end of the cans for instance if an empty can under the spinning station 2 is to be pulled away onto the transport vehicle 7 when a can is pushed underneath from the transport vehicle the magnet need not be turned on the exemplary embodiment of fig2 shows the terminal position of the apparatus 23 for displacing the can on the left end of the extended carriage 22 which is likewise in its farthest extended position the travel paths of the carriage 22 and apparatus 23 are.