| 摘要 |
PROBLEM TO BE SOLVED: To provide a universal block stacker making operation easier, quicker and more reliable than before for a neat finish. SOLUTION: A drop prevention plate 4 is provided to prevent mortar from dropping into holes in blocks and a remainder receiving tray 6 receives extra mortar to save materials. A universal block stacker 1 itself is made of synthetic resin to make the stacker lightweight and enable quick operation with a neat finish. COPYRIGHT: (C)2004,JPO
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