Abstract: A water heater has a cold water inlet bushing which screws into a threaded boss in the side wall of a hot water tank near its bottom. Cold water is injected through a pipe into the inlet bushing. A blind passageway is formed within the inlet bushing which extends radially inwardly from the tank outer wall. An outlet port intersects the blind passageway at 90 degrees, and is positioned tangent to the circular outer wall of the hot water tank at the point the tank is penetrated by the inlet bushing. The inlet bushing creates a jet of water which results in the water within the tank rotating. When turbulent mixing and circulation are created by the inlet water jet, smaller particles of sediment which are placed into suspension can be removed from the hot water tank along with the hot water.

Abstract: A water heater has a cold water inlet bushing which screws into a threaded boss in the side wall of a hot water tank near its bottom. Cold water is injected through a pipe into the inlet bushing. A blind passageway is formed within the inlet bushing which extends radially inwardly from the tank outer wall. An outlet port intersects the blind passageway at 90 degrees, and is positioned tangent to the circular outer wall of the hot water tank at the point the tank is penetrated by the inlet bushing. The inlet bushing creates a jet of water which results in the water within the tank rotating. When turbulent mixing and circulation are created by the inlet water jet, smaller particles of sediment which are placed into suspension can be removed from the hot water tank along with the hot water.

Abstract: A resistance welding apparatus (10) is disclosed which is particularly adapted for use in welding parts (27) into the interior surface of a metal tube (17) in a pre-determined pattern obtained by longitudinal and rotational indexing of the tube. An elongated electrode arm (20) extends into the tube and has a feed track (35) attached thereto through which the metal pieces (27) to be welded are moved down the length of the electrode arm (20). The other end of the electrode arm (20) is rigidly connected to a mount (21) and is electrically insulated therefrom. At the end of the feed track (35), a lever (61) aligns the lead metal piece so as to be at the same level as an end support (43), and a pusher lug (41) advances the metal piece to the end support (43). A piston (46) carried by the end support and acting against the inside wall of the tube moves the end support (43) transversely of the electrical arm to bring the piece (27) to be welded into pressure contact with the inside of the tube (17).

Abstract: Welding apparatus particularly adapted for use in welding parts into the interior surfaces of a metal tube in a pre-determined pattern obtained by longitudinal and rotational indexing of the tube. An elongated electrode arm, which is selectively flexible in one direction, extends into the tube and has a feed track attached thereto through which the metal pieces to be welded are moved into position to the welding head on the end of the electrode arm. The other end of the electrode arm is rigidly connected to a mount and is electrically insulated therefrom. A hydraulic piston carried by the electrode arm at its free end is actuatable to drive the entire arm sideways in its direction of flexibility so as to bring the piece to be welded into firm contact with the inside of the tube. Electrical current is then passed through the electrode arm and the piece to be welded, to the tube, and then to a grounded contact, to resistance weld the metal piece to the tube.

Abstract: A coin-controlled, manually operable golf ball vending machine. The vending machine has a ball hopper and a ramp below the hopper defining a ball dispensing opening between them. A gate rotatably mounted at the opening, extends partially thereacross in its closed position to cause the balls to bridge the opening and is swung into the mass of balls to break up the bridging of balls for releasing them down the ramp when the actuating lever is pulled. The balls on the ramp are received in descending ballways for introduction into ball tubes formed in a rotatable cylinder extending across the bottom of the ballways. The actuating lever is operatively linked to both the gate and the cylindrical ball receiver for simultaneously rotating the gate to release balls down the ramp and the ball receiver for dumping balls therefrom. The actuating lever is maintained inoperative by a coin-releasable locking mechanism.