Abstract: An improved cushioning bumper and stop member for a pivotal door such as used to cover a fuel opening in a vehicle body which is designed to be indexed by rotation in its mount to a precise position for establishing the door's closed position to create an outer surface flush with the surrounding surface of a vehicle body. The adjustable cushioning bumper member is mounted in a recessed door mount assembly so that it can be manually indexed by rotation to a desirable optimum position establishing the door's surface at a desired planar orientation relative to the vehicle's adjacent body surface.

Abstract: In the heat treatment in the field of a thermite weld between rail ends, the rail ends and the weld are enclosed within a containment filled with an aluminothermic material mixture. The mixture is ignited and the rail ends and the thermite weld are heat-treated for a given period. After the given period, the aluminothermic reaction products and the containment are removed, and an air quench unit is placed about the weld and rail ends and compressed air is directed at the weld and rail ends for a given time period. After the removal of the air quench unit, the weld is allowed to cool to ambient temperature.

Abstract: In forming an aluminothermic weld between adjoining rail ends, a sand mold is arranged around the rail ends disposed in spaced relation. The sand mold is formed at least in part of silica sand. The surface of the mold in contact with the rail ends and enclosing the space between the rail ends is formed of one of a combination of silica sand and zircon sand, a layer of zircon sand inwardly from a layer of silica sand, or a thin layer of a zircon mold wash on a surface formed of silica sand.