Apparatus (10) to replace sets of rolls and relative equipment in rolling stands having rolls supported as cantilevers, which is able to take from the stand the sets of rolls and relative equipment complete and already used and to deliver to the stand new sets of rolls and relative equipment complete...http://www.google.com/patents/US4949447?utm_source=gb-gplus-sharePatent US4949447 - Apparatus to replace sets of rolls and relative equipment in rolling stands having rolls supported as cantilevers