Moulding process and apparatus for making arch-shaped concrete structures
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United States of America Patent
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May 2, 1989
Grant Date -
N/A
app pub date -
Jan 20, 1987
filing date -
Jan 21, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for moulding prefabricated curved concrete sections for use in the construction of arched or vaulted structures comprises a curved, upwardly convex mould made up of a series of reusable substantially flat mould plates pivotally supported by vertical pillars of adjustable height. The mould plates are hingedly connected to each other such that the angle of each plate to the adjacent plate is adjustable. The spacing between the vertical pillars is also adjustable, so that the mould plates provide a polygonal mould surface adjustable for moulding prefabricated concrete sections of different curvatures.
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