Abstract: An anti-vermin apparatus for protecting suspended, overhead lines. The apparatus includes a line cover with an elongate junction. Two panels are connected to the junction and depending downwards from it. The panels are angled away from each other. The junction has a line mounting wall disposed towards a line. The wall is in moveable contact with the line and permits side-to-side rocking of the line cover. A ridge is connected to the junction and extends along its length. The ridge is located on the opposite side of the line mounting wall. The panels and the ridge are sized and shaped to balance the line cover on the line so that if a vermin applies force to one or both of the panels, it causes rotation of the line cover on the line a sufficient amount so that the vermin falls.

Abstract: A novel method of combustion air control for multiple burner furnaces, whereas a pressure transducer is located in the air piping downstream of each zone air flow control device. The pressure transducer sends a feedback signal to a pressure control loop that is in a logical cascade from the furnace temperature control loop. The pressure control loop repositions the air flow control device to compensate for changes in both downstream and upstream conditions. Output from the temperature control loop is interpreted by the pressure control loop as a changing remote set-point value. In one embodiment, the system is ideally suited to compensate for the pressure drop changes that occur across a zone air flow control valve, when flow rate changes occur as burners are started or stopped, thus providing a substantially higher turndown ratio and better control at low fire settings.

Abstract: A novel method of combustion air control for multiple burner furnaces, whereas a pressure transducer is located in the air piping downstream of each zone air flow control device. The pressure transducer sends a feedback signal to a pressure control loop that is in a logical cascade from the furnace temperature control loop. The pressure control loop repositions the air flow control device to compensate for changes in both downstream and upstream conditions. Output from the temperature control loop is interpreted by the pressure control loop as a changing remote set-point value. In one embodiment, the system is ideally suited to compensate for the pressure drop changes that occur across a zone air flow control valve, when flow rate changes occur as burners are started or stopped, thus providing a substantially higher turndown ratio and better control at low fire settings.

Abstract: This invention concerns a novel pickling apparatus for removing oxides from the surface of a plurality of parallel laterally spaced wires, continuously moving axially through an enclosed pickling area. The pickling area encompasses one or more sections of turbulent hot acid (hydrochloric or other) pickling liquor submerging the wires. Each section essentially comprises a flooded turbulent processing tray, corrosion resistant centrifugal re-circulating pump, lower reservoir tank and wire wiping components. The pickling fluid is pumped from the lower reservoir tank into the processing tray through laterally (with respect to wire direction) mounted headers. Each header has a plurality of holes to discharge the fluid into the process tray in highly turbulent manner. Weirs at each end of the tray support the wires and flood the tray.