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Machines For Laying And Maintaining Railways
(AREA)
Abstract
"DISPOSITIVO DE SOPORTE PARA MÁQUINAS PERFORADORAS", caracterizado por que está constituido esencialmente por un tren móvil sobre raíles que se desplaza a voluntad del operario, sobre el que van montadas en serie varias perforadoras susceptibles de elevarse o descender para mantenerlas en reposo o en acción de trabajo, evitando de este modo la necesidad de emplear el trabajo de un obrero para cada perforadora.
ES0073968U1959-05-271959-05-27Dispositivo de soporte para máquinas perforadoras
ExpiredES73968Y
(es)
Mécanisme de commande du porte-outil d'une machine d'avancement d'une galerie, de percement d'un tunnel ou de creusement d'une galerie au jour