Nippon Concrete Industries Co. Ltd.

Masao Tanaka

Shinzo Hasegawa

Takemitsu Mori

Toshio Tsunoda

Takumitsu Mori

This invention relates to an apparatus for tensioning reinforcements in the process of manufacturing concrete poles and the like having the structure in which a tension plate of a circular ring shape is fixed to an end plate for setting reinforcements placed inside a mold in a freely slidable manner, the inner surface of the tension plate is engaged with a jack rod, the outer periphery of the tension plate is provided with a plurality of protuberances whose thickness is less than that of the tension plate and which are spaced at equal intervals thereabout, a set ring of a circular ring shape is provided for contacting a flange part at the end of the mold, and the inner surface of the set ring is contacted with the outer periphery of the tension plate and has a plurality of concave parts into which the said protuberances can be disposed; and additional structure by which methods of engaging the tension plate with the jack rod and disengaging the plate from the rod are able to be accomplished in different ways.

Apparatus for tensioning reinforcement in a concrete pole mold

This invention relates to an apparatus for lifting up and carrying concrete poles characterized by comprising beams to be lifted up by a crane or the like, cylinders which are respectively provided under each beam at certain intervals and which section has a downward C-shape and further which inner surface is formed into a taper same as that of a pole so that the cylinders can lift up the pole by adhereing to the pole at determined positions, and a safety confirmation equipment to confirm the adhered condition; and the object of the invention is to lift up and carry long tapered concrete poles safely, surely and efficiently.

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Kamakura, Japan

Masao Tanaka