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Priority to ES0248311ApriorityCriticalpatent/ES248311A2/en
Publication of ES248311A2publicationCriticalpatent/ES248311A2/en
Improvements in the object of the main patent no. 237,549, by improvements in the oil extractor apparatuses, characterized essentially by the fact that the cylinder carrying the pressing mass is organized on the basis of two longitudinal halves, articulated by a generatrix and provided with closing means by the opposite, comprising this cylinder has a movable plunger-like bottom which, depending on a centering plate fitted to the piston head, provides a centered and uniform thrust. (Machine-translation by Google Translate, not legally binding)
ES0248311A1959-03-301959-03-30Improvements in oil extractor appliances (Machine-translation by Google Translate, not legally binding)
ExpiredES248311A2
(en)