Moulding process and apparatus for making arch-shaped concrete s

Details Moulding process and apparatus for making arch-shaped concrete s Moulding process and apparatus for making arch-shaped concrete s

1987-01-20

1989-05-02

Hoag, Willard

Plastic and nonmetallic article shaping or treating: processes

Forming structural installations in situ

Arched, domed, or vertical-cylindrical structure

249 11, 249 13, 249 24, 249 26, 249 47, 264333, 405146, 405150, B28B 130, B28B 704, B28B 706

Patent

active

048266396

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.

REFERENCES:
patent: 862418 (1907-08-01), Street
patent: 1252093 (1918-01-01), Davidson
patent: 1450577 (1923-04-01), Brynoldt
patent: 1498651 (1924-06-01), Folwell
patent: 2705826 (1955-04-01), DeWaller
patent: 3618886 (1971-11-01), Graham
patent: 3696177 (1972-10-01), Holland
patent: 4155967 (1979-05-01), South et al.
patent: 4170093 (1979-10-01), Capelli et al.

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