发明授权
US3669597A Apparatus for the production of small concrete elements 失效
用于生产小混凝土元素的装置

Apparatus for the production of small concrete elements
摘要:
MANUFACTURING OF SMALL CONCRETE ELEMENTS IS IMPROVED BY COMPACTING THE CONCRETE MIX IN A MOULD AND REMOVING ANY POSSIBLE FILLING SURPLUS DURING COMPACTION, THE SURPLUS BEING REMOVED IN A PLURALITY OF STEPS. A NOVEL APPARATUS FOR THE PRODUCTION OF SMALL CONCRETE ELEMENTS COMPRISES AN UPWARDLY OPEN MOULD AND A PRESS RAM WHICH IS MOVABLE IN A VERTICAL DIRECTION AND THE RAM PLATE OF WHICH MAY COVER THE FREE UPPER CROSS SECTION OF THE MOULD SAID RAM PLATE BEING PROVIDED WITH MEANS FOR THE REMOVAL OF A FILLING SURPLUS FROM THE MOULD, WHICH MEANS IS MOVABLE IN A VERTICAL DIRECTION INDEPENDENTLY OF THE RAM.
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