Cutter pick assembly with water spray assembly

A cutter bit assembly for use in cutting operations for underground mining, road grading, and the like comprising:

• a pick box, a cutter bit carrying a cutter tip, and a water spray assembly attached to the pick box, the water spray assembly comprising a water nozzle, a first chamber, and a second chamber;
• the first and second chambers being disposed on an outer surface of the pick box and being spaced apart from one another along the outer surface, the first chamber comprising a wall defining an open first end of the first chamber, the second chamber having opposite first and second open ends, the first end of the first chamber and the first end of the second chamber facing one another and being spaced apart from one another by an air gap extending uninterruptedly along said outer surface of the pick box from the first end of the first chamber to the first end of the second chamber, the air gap being open to the ambient atmosphere and extending away from the outer surface of the pickbox wherein the entire first open ends of the first and second chambers face and define opposite ends of the airgap;
• the water nozzle comprising a discharge end, a water inlet, and a seal disposed between the discharge end and the water inlet, the water nozzle being disposed in the first chamber with the discharge end of the water nozzle aiming at the first end of the second chamber, the water inlet being aligned with an opening in the first chamber wall that receives water into the first chamber during cutting operations, and the seal engaging the first chamber wall and sealingly dividing the first chamber between the water inlet and the discharge end of the water nozzle;
• and
• the first chamber wall extending without openings from the water nozzle seal to the first end of the first chamber.