Railway track hold-down hardware

A railway rail holding assembly comprising a molded base member having a depression in its top surface with side walls on opposite sides of the rail;

• a pad of cushion material adhered in said depression with the ends of the pad bent upward to cover said side walls, the molded material of said base member being heat cured and said pad being adhered to said base member while said base member is warm from heat curing, grooves in the top surface of said pad in an area of the pad in contact with the rail;
• a pair of elongated vertical tubular nuts embedded in said base member with their upper ends underlying said pad on opposite sides of the rail, each tubular nut having a reduced cylindrical neck portion connecting the upper end of the nut with a lower end which is thicker and wider than said neck and which is transversely flattened at its lower extremity, a corrosion preventing coating on said tubular nuts, and sand adhered to said coating to provide a bond between said tubular nuts and said molded material of said base member;
• an apertured clip on said pad on each side of the rail, one end of each clip bearing against said pad on said side wall of the depression and the opposite end of the clip bearing against the top of the rail flange and having a vertical abutment surface confronting an edge of the rail flange;
• a bolt extending through the aperture in said clip and having threaded engagement in said tubular nut;
• aligned radial threaded holes in opposite sides of said tubular nut containing threaded plastic plugs having inner ends frictionally engaging threads on said bolt to prevent rotation of the bolt, the outer ends of said plugs being flush with the outer surface of said tubular nut and engaging the molded material of said base member, said plastic plugs being spaced from the upper end of said nut so that they are not engaged by a threaded tool which positions the upper end of the nut in a mold for said base member when the base member is molded;
• and bolt holes in said pad of smaller diameter than said bolts causing said pad to grip the bolts and assist in preventing rotation of the bolts in service.