Abstract: A method for forming an embossed extruded plastics molding which comprises the steps of extruding a plastics molding through a die to have a required profile, and passing the molding through an embossing press the embossing part of which is unheated, and operating a heater just ahead of the embossing part of the embossing press to flash heat a first (e.g. upper) surface/side of the extruded plastics molding, whereby the embossing part of the embossing press may press into and thereby emboss the previously heated surface.

Abstract: The invention provides a method of replacing the wheels of a railroad car while the railroad car is at rest on rail tracks. Most advantageously, the rail car need not be uncoupled from adjacent cars. The method also has the advantage that rail cars are jacked at the coupler thereby making the method applicable to all types of cars including grain and oil cars which cannot be jacked in their midsections. The method comprises the steps of: releasing the wheel to be replaced from the rail car; transverse insertion of a jack between the rails and the underside of the coupler; actuating the jack to lift the rail car supported upon the underside of the coupler; removing the wheel to be replaced; replacing the wheel; actuating the jack to lower the rail car onto the replaced wheel; securing the replaced wheel to the rail car.