Patent ID: 7386929

Claim:
In the method of coating an elongated wooden railroad crosstie with a resinous coating comprising securing end caps on ends of said elongated wooden railroad crosstie, passing a series of elongated wooden railroad crossties having end caps in substantially end-to-end configuration through a crosshead die opening and contacting said elongated wooden railroad crossties with a molten resinous extrudate in said die opening to form a coating on a surface of said elongated wooden railroad crossties to form resinous elongated wooden coated railroad crossties having end caps, and separating said elongated wooden coated railroad crossties, the improvement comprising securing end caps having an outer surface opposite to an end cap surface in contact with said coated elongated wooden railroad crosstie, said outer end cap surface having at least two concentric lip-like projections on about one-half of said end cap outer surface and having a ridge located proximate to the periphery of said end cap and not extending into an area occupied by said lip-like projections, whereby separation of said elongated wooden coated railroad crossties after coating is facilitated.