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MINES DOMANIALES DE POTASSE D'ALSACE
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MINES DOMANIALES DE POTASSE D'ALSACE
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Application filed by MINES DOMANIALES DE POTASSE D'ALSACEfiledCriticalMINES DOMANIALES DE POTASSE D'ALSACE
Priority to ES0325209ApriorityCriticalpatent/ES325209A3/en
Publication of ES325209A3publicationCriticalpatent/ES325209A3/en
Improvements in the fastening elements and in particular in the pit-fitting elements whose cross-piece has a housing in which an extension piece can slide horizontally between an "extended" or working position, and a "retracted" or resting position , characterized in that the element also has at least one interlocking device (4) of the hydraulic type associated with the extension (1) and acting near the rear end of said extension, in its extended position to adapt it against the roof of the pit . (Machine-translation by Google Translate, not legally binding)
ES0325209A1966-03-281966-03-28Improvements in the elements of entibate. (Machine-translation by Google Translate, not legally binding)
ExpiredES325209A3
(en)