Multiple concrete form apparatus

Static molds – Core – Including means for attaching core to a support

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Details

264334, B28B 728

Patent

active

039319520

ABSTRACT:
Apparatus for forming concrete buildings that have numerous identical portions, which minimizes the set-up time for a group of forms, by permitting the forms to be individually released from set concrete while constantly maintaining the positions of the forms on a subform. The apparatus includes several forms with flanges that rest on a subform, several bolts for each form that project through flanges of the forms and through holes in the subform, and a spring for each bolt to urge its lower end downwardly with respect to the subform. After concrete is poured on the forms and partially sets, the subform is lowered a few inches even though the forms may remain stuck in the concrete, and then each form is individually freed from the concrete. As each form is freed, the bolts guide it down to its original position on the subform. The subform and forms then can be moved as a unit to a new location in the building where another identical concrete portion is to be formed.

REFERENCES:
patent: 1655629 (1928-01-01), Senesac
patent: 1846195 (1932-02-01), Goldsmith
patent: 1985115 (1934-12-01), Straub
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patent: 2570384 (1951-10-01), Russell
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patent: 3294358 (1966-12-01), Hagedorn
patent: 3295280 (1967-01-01), Kettner
patent: 3640040 (1972-02-01), MacLean
patent: 3740178 (1973-06-01), Neil

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