Abstract: An automatic dump bucket has a bail which can rest in an inclined position or a vertical position, the bail of the dump bucket pivotable about pivot pins that are not secured to the side wall of the bucket but which are disposed in a bore in a pivot pin support plate on the side wall of the bucket, in a pivot pin aperture in a side wall of an enclosure bracket and trapped by a pivot pin locking plate. The pivot pin and bail contact area can be lubricated by forcing a lubricant through an opening in the pivot pin locking plate and a passageway formed in the pivot pin. The dump bucket also has fork lift channels and roll-over blocking channels and, when dumped, assumes a position beyond a parallel position with the bail.

Abstract: In the long wall mining of coal, a sectional pan-line is positioned along the working face of the coal seam parallel with the working face. The pan-line sections joined together have parallel rails along which the mining machine travels. At least one of said rails comprises a continuous gear rack at a height above ground with which a power driven gear wheel on the mining machine meshes for propelling the machine back and forth along the face of the coal. This invention is for a wheeled flat bed dolly having two parallel rails, one along each side, that are of height and width matching the rails of the pan-line. There is a support at one end of each of these rails to which the ends of the rails of the pan-line interfit with a temporary connection holding the dolly and pan-line against separation.