Klockner-werke Ag

Klockner-becorit Gmbh

Heinrich Schulte

Hans Lachner

Hans Warnke

Werner Boer

Guenter Maschonat

Joerg Richter

Elmar Gotte

A rail assembly for supporting the wheels of underground wheeled coal-getting machines, in combination with a coal conveyor comprising a plurality of conveyor pans interconnected end-to-end in the direction of movement of the machines with the central axes of adjoining pans being angularly related, the assembly comprising a rail section mounted on each pan with each section including at least three rail elements having adjoining ends interconnected for relative movement along such direction, so that the upper surfaces of the rail sections lie parallel to the central axes of the pans and the rail assembly is thereby made to follow the undulations of the conveyor when mounted in place.

Rail assembly for underground coal-getting machines

A drive sprocket wheel of the type having drive chain link receiving pockets formed between the sprocket teeth and a circumferential groove dividing each tooth into a pair of tooth sections with the outer tips at the flanks or sides thereof being cupped for the reception of the horizontal chain links, is improved by sloping the cupped outer tips toward the running direction of the chain. In the sloping direction, the outer portions of the flanks may be flat and are followed by concave surfaces. The sloping flanks of each pair of toothed sections establish theoretical points of contact with the rounded horizontal chain links during the drive operation, such points lying about midway between opposite sides of the sloping flanks.

Drive sprocket wheel

A mine roof support structure includes a floor skid, a supporting shield pivotally connected thereto by a pair of rocker arms forming a lemniscate guide, a roof cap pivotally connected at a roof cap joint to the shield, and hydraulic props supporting the roof cap. A hydraulic actuator is pivotally connected at opposite ends to the skid and to one of the arms, and the other of the rocker arms is disposed nearer the coal-face end of the support than the one arm. Such other arm is longitudinally adjustable and is pivotally connected at opposite ends to the skid and to the shield. This other arm is so constructed that its opposite ends may be adjusted relative to one another to enable the cap and the roof cap joint to follow a lemniscate path during settling of the roof and to follow a circular arc during a lowering of the cap toward the skid upon actuation of the hydraulic actuator.

Mine roof support structure

Growing community of inventors

Witten, Germany

Heinrich Schulte