Patent ID: 7544128
Filing Date: 2009-06-09
Classification: A01D

Abstract:
1. A discharge spout for connection at a first end to a discharge tube in a forage harvester to discharge processed crop from a mouth at its second end into a vehicle driven alongside the harvester, wherein the discharge spout comprises a rectangular cross-section having a top and a bottom which are generally horizontal in use and two sides that are generally vertical during use, the discharge spout comprising: an inspection opening near the first end, wherein the inspection opening is provided in the top of the discharge spout; a first door covering and closing off the inspection opening; and at least one wear plate formed separately from the door and secured to the inner surface of the door, wherein the at least one wear plate connected to the door lines the inner surface of the top of the discharge spout, wherein additional lateral wear plates are provided to line the inner surfaces of the vertical sides of the discharge spout, wherein the lateral wear plates are secured to the vertical sides of the discharge spout and are accessible for removal and replacement through the inspection opening, further wherein the door is formed with two pressed out ribs each defining a groove receiving the upper edges of the two vertical sides of the discharge spout and of the lateral wear plates, so as to define labyrinth seals, the labyrinth seals preventing separation of the lateral wear plates from the vertical sides of the discharge spout.