Abstract: Methods for playing variations of the game of chess include a playing area having 144 playing stations arranged in a 12 by 12 matrix. Two, three, or four players can utilize the playing area to play a game of chess. The game may be played using common chess pieces of a “phantom” player, wherein the real players take turns moving the common chess pieces. In a preferred playing embodiment, when a player is checkmated, all of the players chess pieces are removed from the playing area. In another preferred embodiment, when a player is checkmated, only the checkmated player's king is removed from the playing area, with all the other chess pieces of the checkmated player remaining immobile on playing area. In another preferred embodiment, one or more master pawns may replace conventional pawns. The master pawns move diagonally and capture straight ahead.

Abstract: A paint spray and bake booth hasash an air heating and circulating system with two blowers and a combination of dampers and ducts which provide different air circulating circuits for the spraying and baking steps. A gas fired furnace with heat exchanging system adds heat directly to the air circulated through the booth to bake paint on a vehicle in it. The heat exchanging system also includes reclamation coils for heat transfer from the circulating air to water in the coils and which is piped to a storage tank for storage of heat over a prolonged period. The storage tank supplies the water through pipes to space heating units in the building in which the paint booth is located. Water is returned from the space heating units to the paint booth heat exchanging system.

Abstract: A heat exchanger assembly for a paint baking booth includes a horizontal cylindrical fire box with a vertical cylindrical hot gas riser chamber atop the fire box. A tube mounting plate across and sealed to the the top of the riser chamber extends outwardly from it. There is an array of circularly spaced fire tubes. Each tube has an entrance at the bottom of the mounting plate inside the top of the riser chamber, and extends upwardly and outwardly therefrom and then downwardly along side the riser chamber and then further outwardly and then upwardly parallel to the downward extending portion and then inwardly and upwardly into a stack for exhaust to the exterior of the building.

Abstract: A paint spray and bake booth has an air heating and circulating system with two blowers and a combination of dampers and ducts which provide different air circulating circuits for the spraying and baking steps. A gas fired furnace with heat exchanging system adds heat directly to the air circulated through the booth to bake paint on a vehicle in it. The heat exchanging system also includes reclamation coils for heat transfer from the circulating air to water in the coils and which is piped to a storage tank for storage of heat over a prolonged period. The storage tank supplies the water through pipes to space heating units in the building in which the paint booth is located. Water is returned from the space heating units to the paint booth heat exchanging system.