Abstract: A furnace system includes an air intake that includes a pipe portion and a seal component configured to couple with the pipe portion. The furnace system also includes an internal drain disposed internal to the air intake. The internal drain includes a trough configured to collect liquid flowing along an inner surface of the pipe portion. The internal drain also includes an opening in the trough configured to guide the liquid collected in the trough to a passage through the air intake to a location outside the air intake.

Abstract: A furnace system includes an air intake that includes a pipe portion and a seal component configured to couple with the pipe portion. The furnace system also includes an internal drain disposed internal to the air intake. The internal drain includes a trough configured to collect liquid flowing along an inner surface of the pipe portion. The internal drain also includes an opening in the trough configured to guide the liquid collected in the trough to a passage through the air intake to a location outside the air intake.

Abstract: A furnace system includes an air intake that includes a pipe portion and a seal component configured to couple with the pipe portion. The furnace system also includes an internal drain disposed internal to the air intake. The internal drain includes a trough configured to collect liquid flowing along an inner surface of the pipe portion. The internal drain also includes an opening in the trough configured to guide the liquid collected in the trough to a passage through the air intake to a location outside the air intake.

Abstract: A furnace system includes an air intake that includes a pipe portion and a seal component configured to couple with the pipe portion. The furnace system also includes an internal drain disposed internal to the air intake. The internal drain includes a trough configured to collect liquid flowing along an inner surface of the pipe portion. The internal drain also includes an opening in the trough configured to guide the liquid collected in the trough to a passage through the air intake to a location outside the air intake.

Abstract: The invention is applicable to a furnace having a plurality of parallel, multi-pass pass heat exchanger panels that are susceptible to the occurrence of hot spots at a specific location. A baffle is installed between adjacent panels and is so placed and spaced from that location as to cause the flow of circulation air to be diverted to that location to prevent the occurrence of hot spots. The baffle may be integrally formed as an extension of a rear wall baffle which is attached to the rear wall and extends normally therefrom to divert circulation air away from the rear wall. The baffle is relatively planar and elongate in shape and is closely spaced from but does not engage the surface of the heat exchanger panels.

Abstract: The invention is applicable to a furnace having a plurality of parallel, multi-pass pass heat exchanger panels that are susceptible to the occurrence of hot spots at a specific location. A baffle is installed between adjacent panels and is so placed and spaced from that location as to cause the flow of circulation air to be diverted to that location to prevent the occurrence of hot spots. The baffle may be integrally formed as an extension of a rear wall baffle which is attached to the rear wall and extends normally therefrom to divert circulation air away from the rear wall. The baffle is relatively planar and elongate in shape and is closely spaced from but does not engage the surface of the heat exchanger panels.

Abstract: An enclosure surrounding the burner of a furnace, including a top panel, a rear panel, a bottom panel, a front panel, and first and second side panels. An air inlet is provided in one of the panels. A baffle is provided within the enclosure and extends between two opposed panels, each of the opposed panels adjacent the panel having the inlet. A chamber is partly defined by the baffle, the inlet opening into the chamber. The chamber is provided with a vent through which the inlet is in fluid communication with the burner.

Abstract: An apparatus for attaching a pad eye to an underwater ship includes explosives connected to the wings of the pad eye to explosively weld it to the hull of the ship. A water-tight housing holds the pad eye and allows gas to be introduced to drive away all water. Magnets hold the housing to the hull before detonation, a window in the top of the housing allows the diver to observe the entrance of the gas.

Abstract: An underwater excavator comprising a modular non-metallic cofferdam wherein ater under pressure exits from a plurality of nozzles along at least one side of the base of the cofferdam and a fluid driven eductor driven by pressurized fluid evacuates the suspended solids raised by the pressurized fluid that flows through the nozzles, with a plurality of small barrier nozzles located along one or more horizontal conduits used to sink the cofferdam.