Mass discharger for a container such as a silo, including a jointed conveyer operating from above

A mass discharger for discharging a bulk mass from a container, said container having a bottom and upstanding sides with an interior length extending to a discharge end formed by a sloping side with an upper edge, said discharger including a support structure supporting said discharger, operating devices for operating said discharger and a transfer device for moving an upper surface of the mass to outside said container, characterized in that said transfer device is a scraper conveyor articulated by a first joint next to said edge and extending essentially for said length of said container and over said edge, said scraper conveyor including an endless conveyor chain having attached scrapers and extending to longitudinally opposite ends of said scraper conveyor, and a second joint spaced from said first joint and intermediate said longitudinal ends such that the scraper conveyor rests against said side adjacent to the first joint and against said bottom of the container when it is empty, said scraper conveyor including first and second longitudinal frame components of which said first frame component is jointed by said first joint near said edge and said second frame component is jointed to said first frame component by said second joint, a guide wheel located above said scraper conveyor in the area of said second joint but offset slightly toward said first joint to turn the conveyor chain when the scraper conveyor bends at the second joint, and said discharger includes lifting devices for raising said scraper conveyor to an upper position for filling said container.