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
E21C29/06—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains anchored at one or both ends to the mine working face
E21C29/10—Cable or chain co-operating with a winch or the like on the machine
Landscapes
Engineering & Computer Science
(AREA)
Mining & Mineral Resources
(AREA)
Mechanical Engineering
(AREA)
Life Sciences & Earth Sciences
(AREA)
General Life Sciences & Earth Sciences
(AREA)
Geochemistry & Mineralogy
(AREA)
Geology
(AREA)
Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles
(AREA)
Dispositif pour realiser au choix dans une bande de materiau en mouvement continu des echancrures ou des trous ou des trous d'aiguille servant a la purge de l'air