Patent ID: 7641286

Claim:
A plough guide trough for plough guides of chain-drawn coal ploughs, comprising two superposed chain guide ducts separated by an integrally cast sliding spacer member, with a top guide strip, a bottom guide beam and a bottom slideway for guiding the plough, wherein the top chain guide duct is covered by a front wall comprising the guide strip and merging into the guide beam and slot lead-through for a plough guiding hook or plough knife is formed between the guide beam and the slideway, also comprising pockets in the front wall for receiving toggle coupling means for neighboring plough guide troughs, wherein the front wall, the guide strip, the guide beam , the pockets and a back wall comprising the slideway form a one-piece casting extending over the length of the plough guide trough, wherein the back wall on its outside is provided with at least one integrally cast locking pocket for engagement of locking lugs or locking tongues on an interchangeable top trough of a conveyor pan trough.