One of the photos in this eBay listing shows where the man is forward and the exit panel at the end of the chute is down, so maybe the man only travels half the width of a box when ejecting one and his extended hand is what retains the next one until he get all the way back to his starting position. You'll also see a photo of boxes and milk cans. The milk cans might be large enough in diameter for his hand to make solid contact with one and also for it to touch the next one on the rack to prevent it from tipping or leaning over? Let me know what you think. Thanks.
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