Side frame and bolster for a railway truck and method for manufacturing same
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United States of America Patent
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May 24, 2016
Grant Date -
Nov 22, 2012
app pub date -
May 17, 2011
filing date -
May 17, 2011
priority date (Note) -
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Abstract
A method for manufacturing a bolster of a railway car truck includes providing a drag portion and a cope portion of a mold. In a main body section of the mold, a parting line that separates the drag portion from the cope portion is substantially centered between portions of the mold that define brake window openings in sides of the bolster. One or more cores are inserted into the mold and a molten material is poured into the mold to thereby case the bolster.
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