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Individual
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Individual
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Priority to ES0249931ApriorityCriticalpatent/ES249931A3/en
Publication of ES249931A3publicationCriticalpatent/ES249931A3/en
A tower crane characterized in that it comprises a mast based on a metallic structure in whose upper part is articulated by one of its ends, the boom or arm being mounted on a frame by articulation according to a horizontal axis in such a way as to be horizontally retractable, which frame is disposed on a turntable around a vertical axis mounted through a pivot on a chassis equipped with wheel systems suitable for running on rails existed on the platform a balance counterweight as means to rotate the mast around the axis by which it joins the frame and fix it maintaining the vertical position; means to rotate the pen around its articulation to the mast by pressing it against it. Or giving it the proper inclination; means for rotating the chassis-platform-mast and pen assembly around a vertical axis and means for determining the running of the chassis by supporting the assembly on rails. (Machine-translation by Google Translate, not legally binding)
ES0249931A1959-05-231959-05-23A tower crane (Machine-translation by Google Translate, not legally binding)
ExpiredES249931A3
(en)
A device for putting a reinforcing wheel with a tire in a vertical position on the soil, suspended horizontally below a vehicle. (Machine-translation by Google Translate, not legally binding)