Hopper and trailer lift mechanism

Claim 1

A TRAILER-HOPPER ARRANGEMENT HAVING MEANS FOR TRANSPORTING HOPPERS AND FOR ERECTING A HOPPER UPON A MOUNTING MEANS COMPRISING AN ELONGATED TRAILER HAVING A PAIR OF TRACKS LONGITUDINALLY DISPOSED THEREON FOR MOUNTING A PLURALITY OF HOPPERS THEREON, A DRIVABLE CHAIN MEANS TO DISPLACE THE HOPPERS ALONG SAID TRACK, A LIFT MECHAISM MOUNTED ON THE TRAILER TO MOVE A HOPPER WITH RESPECT TO THE TRAILER ALONG A VERTICAL PATH WITH RESPECT TO THE PLANE OF THE TRAILER, EACH OF SAID HOPPERS HAVING TELESCOPICALLY CONSTRUCTED LEG ARRANGEMENTS TO DISTEND INTO A SUPPORTING ARRANGEMENTS FOR HOLDING THE HOPPER IN AN UPPER LOCATION AFTER THE LIFT MECHANISM HAS DISPLACED THE HOPPER TO SAID POSITION AND SAID LEGS HOLDING THE HOPPER IN SAID POSITION WHEN THE LIFT MECHANISM HAS BEEN REMOVED THEREFROM, THE TELESCOPIC SECTIONS ENGAGING EACH OTHER IN A BAYONET AND PIN ARRANGEMENT FOR FACILITATING THE ERECTION OF THE SUPPORTING ARRAGEMENT, AND EACH OF THE HOPPERS BEING PROVIDED AT THE CORNERS THEREOF WITH A TRUNNION MOUNTING AND BRACE MECHANISM FOR SUPPORTING THE LEGS IN A RELATIVELY INCLINED SUPPORTING POSITION, SAID TRUNNION MOUNTING INCLUDING A PIVOTAL CONNECTION FOR ALLOWING THE TELESCOPIC LEGS TO HANG IN A GENERALLY VERTICAL POSITION WHEN IN THEIR COLLAPSED POSITION.