Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1976-02-17
1978-02-07
Baldwin, Robert D.
Metal founding
Process
Shaping liquid metal against a forming surface
164350, 164362, B22C 902, B22C 920, B22D 3504
Patent
active
040721809
ABSTRACT:
A mould for use in the casting of molten metal, comprises one or more generally vertically disposed mould cavities with an ingate to the or each mould cavity, the ingate communicating with a part of the mould adapted to form part of a runner-feeder and the said part of mould adapted to form part of the runner-feeder being so formed as to provide a weir, whereby with several moulds secured in side-by-side relationship, adjacent said parts of the moulds combine to form a generally horizontal runner-feeder, with a weir between longitudinally successive adjacent ingates, the weir being of a height such that the minimum vertical cross-sectional area of the runner-feeder is not less than the cross-sectional area of the ingate or the sum of the cross-sectional areas of the ingates associates with one mould, and the top of the weir is above the uppermost part of the or each mould cavity, so that with molten metal poured into the runner-feeder, molten metal flows into the well associated with a first mould from where it flows through the or each ingate into the or each cavity, molten metal filling the well until it flows over the first weir and into the well associated with the second mould and so on until all the successive wells have been provided with molten metal continued pouring then filling the runner-feeder.
REFERENCES:
patent: 521451 (1894-06-01), Adams
patent: 2940142 (1960-06-01), Wells et al.
patent: 3463221 (1969-08-01), Tillery
Baldwin Robert D.
W. H. Booth & Co. Limited
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