Static molds – Forming product having joint or coupling – Lapped interfitted facing – alternating reversing identical...
Patent
1980-11-03
1981-12-15
Flint, Jr., J. Howard
Static molds
Forming product having joint or coupling
Lapped interfitted facing, alternating reversing identical...
425DIG218, B28B 706
Patent
active
043055648
ABSTRACT:
The invention relates to the technical problem of providing a simple, efficient and easily operable locking mechanism to releasably clamp the bottom ring to the lower edge of the outer mould in a casting mould for the production of concrete or similar pipes in an upright position. With this in view the locking mechanism comprises a radially slotted, resilient locking ring which by means of an opening and closing mechanism is movable between a locking position in which it engages beneath the outer edge portion of the bottom ring and seals said portion tightly against the lower edge of the outer mould, and a free position in which the inner diameter of the locking ring is larger than the outer diameter of the bottom ring so as to enable said locking ring to pass free of the bottom ring when the recently cast pipe is separated from the mould.
REFERENCES:
patent: 1941812 (1934-01-01), Muntz
patent: 2863205 (1958-12-01), Seaman et al.
patent: 3276091 (1966-10-01), Pausch
patent: 3530553 (1970-09-01), Engle et al.
patent: 4134568 (1979-01-01), Christian
Flint, Jr. J. Howard
Pedershaab Maskinfabrik A/S
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