Stoker with universal key construction

A continuous ash discharge stoker apparatus which comprises:

• first and second sprockets;
• a continuous track interconnected elongated arm and key assemblies;
• each arm and key assembly including an arm having an elongated mounting flange that extends laterally across substantially the width of said track;
• each arm and key assembly including a plurality of keys, each key in said plurality of keys including a mounting surface dimensioned and configured for sliding engagement with said arm, said mounting surface being disposed on the bottom of said key;
• each key in said plurality of keys having an upper face for receiving associated fuel to be burned;
• each key in said plurality of keys having a first side having a first contour;
• and
• each key in said plurality of keys having a second side having a second contour, said second contour being different than said first contour.

A furnace apparatus which comprises:

• walls defining a combustion chamber;
• a continuous ash discharge stoker disposed in said chamber;
• said continuous ash discharge stoker including first and second sprockets;
• a continuous track interconnected elongated arm and key assemblies;
• each arm and key assembly including an arm having an elongated mounting flange that extends laterally across substantially the with of said track;
• each arm and key assembly including a plurality of keys, each key in said plurality of keys being identical and including a mounting surface dimensioned and configured for sliding engagement with said arm, said mounting surface being disposed on the bottom of said key;
• each key in said plurality of keys having an upper face for receiving associated fuel to be burned;
• each key in said plurality of keys having a first side having a first contour;
• and each key in said plurality of keys having a second side having a second contour, said second contour being different than said first contour.