Split mould for making tapered concrete poles

Details Split mould for making tapered concrete poles Split mould for making tapered concrete poles

1976-12-27

1978-04-18

Husar, Francis S.

Static molds

Container-type molding device

Of named component

164292, 249137, 249173, 425435, 425DIG5, B28B 2182

Patent

active

040847829

ABSTRACT:
A tapered mould consisting essentially of a rigid outer frame formed of a set of radially arranged longitudinally extending guide members and a set of axially spaced encircling rings, and a gapped frustoconical tubular casing of resilient sheet material having a set of longitudinal stiffening members arranged thereon for sliding engagement with the respective guide members. The gap in the wall of the tubular casing, extending along a longitudinal line on the periphery of the casing, is opened and closed automatically as the tubular casing inserted in the outer frame is moved axially in opposite directions. Labor - consuming bolt - clamping and releasing operation is completely eliminated and the mould operation can be mechanized with ease, as desired. Packing means interposed between a pair of stiffening members arranged on the opposite sides of the gap further ensures leak - proof gap closing. Any accidental gap opening during casting operation can be prevented by arranging wedge means between one of the encircling rings on the outer frame and the two stiffening members.

REFERENCES:
patent: 1485860 (1924-03-01), Ladd
patent: 1532537 (1925-04-01), Ladd
patent: 2794231 (1957-06-01), Lloyd
patent: 3110074 (1963-11-01), Menzel et al.
patent: 3989221 (1976-11-01), Okada et al.

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