FR989805A - Perceuse portative pour former l'avant-trou nécessaire à la mise en place des tirefonds dans les traverses des voies ferrées
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Perceuse portative pour former l'avant-trou nécessaire à la mise en place des tirefonds dans les traverses des voies ferrées
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E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
E01B31/20—Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting
E01B31/24—Forming, treating, reconditioning, or cleaning holes in sleepers; Drilling-templates
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FR989805D1949-04-291949-04-29Perceuse portative pour former l'avant-trou nécessaire à la mise en place des tirefonds dans les traverses des voies ferrées
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Fondations de sécurité pour bâtiments et ouvrages soumis à l'influence de mouvements souterrains ou sujets aux perturbations provoquées par les affaissements miniers