Patent ID: 9114814
Filing Date: 2015-08-25
Classification: B22C,B22D,B61F

Abstract:
1. A method of manufacturing a friction wedge of a rail car, the method comprising: forming, in drag and cope portions of a mold, at least one cavity that defines at least some exterior features of at least one friction wedge; inserting into the drag portion at least one core adjacent to the at least one cavity, the at least one core including at least one surface configured to define a column face of the at least one friction wedge; forming, in the drag and cope portions of the mold, rigging including a down sprue, at least one ingate, and at least one runner for directing molten material to the at least one cavity; pouring a molten material into the mold to form at least one friction wedge casting; removing the at least one friction wedge casting from the mold; and removing rigging from the at least one friction wedge casting.