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Gewerkschaft Eisenhutte Westfalia GmbH
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Gewerkschaft Eisenhutte Westfalia GmbH
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Application filed by Gewerkschaft Eisenhutte Westfalia GmbHfiledCriticalGewerkschaft Eisenhutte Westfalia GmbH
Priority to FR840231ApriorityCriticalpatent/FR1268947A/fr
Application grantedgrantedCritical
Publication of FR1268947ApublicationCriticalpatent/FR1268947A/fr
E21C27/00—Machines which completely free the mineral from the seam
E21C27/20—Mineral freed by means not involving slitting
E21C27/32—Mineral freed by means not involving slitting by adjustable or non-adjustable planing means with or without loading arrangements
E21C27/34—Machine propelled along the working face by cable or chain
E21C27/35—Ram-ploughs
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Engineering & Computer Science
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Mining & Mineral Resources
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Mechanical Engineering
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Life Sciences & Earth Sciences
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General Life Sciences & Earth Sciences
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Geochemistry & Mineralogy
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Geology
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FR840231A1960-10-041960-10-04Procédé et dispositif pour l'abatage du charbon par percussion, utilisables notamment dans les mines
ExpiredFR1268947A
(fr)
Dispositif pour l'extraction du charbon au moyen d'un équipage de rabotage guidé le long d'un transporteur, utilisable notamment dans les mines
Procédé et dispositif pour l'extraction du charbon ou d'autres minéraux au moyen d'un outil en forme de rabot, utilisables notamment dans les mines