Abstract: An auger for bulk material compressors of the type having a feed chamber and a packing chamber to which is attached a tubular silo bag. The auger includes an inlet portion, located within the feed chamber, and an outlet portion, located within the packing chamber. The inlet portion includes a shaft and flights, each preferably of constant diameter. The outlet portion also has flights preferably of uniform diameter and a shaft which is cone-shaped, increasing in diameter from its connection with the shaft of the inlet portion, adjacent the beginning of the packing chamber, to the end of the auger flights, within the packing chamber, for gradual compression of bulk material within the packing chamber. The terminal most end of the auger, within the packing chamber, is provided with an end member to provide a large surface area as a support bearing for the auger in its engagement with the compressed material without substantial lengthening of the shaft.

Abstract: Bag placement apparatus for silo bag filling machines of the type having a forming chamber, said apparatus comprising a bag supporting framework; an overhead winch and cable unit; a trolley; and a trolley track. The winch is supported on the trollery, which, in turn, is carried by and reciprocally movable along the horizontally extending trolley track. A silo bag is draped over the framework and then vertically lifted by the winch-cable unit. The trolley is then rolled forward over the forming chamber and the winch activated to lower the bag supporting framework onto the top of the forming chamber from where the bag is dispensed during the filling operation.