E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
E21C29/14—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains by haulage cable or chain pulling the machine along the working face
E21C29/16—Winches or other means for pulling cable or chain
Dispositif de transmission de vitesse avec marche arriere pour le deplacement d'un vehicule automobile, notamment d'un vehicule motorise a au moins deux-roues