Abstract: A magnetic coupling is provided for a fluid flowmeter wherein the magnetic coupling includes a first and a second magnet assembly. The first magnet assembly includes a plurality of magnets coupled to the counter mechanism of the flowmeter, and the second magnet assembly includes a plurality of magnets coupled to the propeller. The two magnet assemblies are constructed and located so that they magnetically influence one another, and when the propeller rotates the second assembly, the first assembly is driven to rotate thereby driving the counter.

Abstract: A molded thermoplastic filter plate (10, 50) having a peripheral rim (14, 54) which extends completely around the perimeter of and is integral with an inner web (12, 52) such that inner drainage faces (15, 53) are formed on each side of the plate (10, 50). Each side of the plate (10, 50) is divided into four triangular sectors (20, 22, 24, 26 and 60, 62, 64, 66). The boundary of each sector lies generally along a line extending from the center of the drainage face (15, 53) to a corner of the peripheral rim (14, 54), from the corner of the peripheral rim (14, 54) to an adjacent corner of the peripheral rim (14, 54), and from the adjacent corner back to the center of the drainage face (15, 53). Thus, each sector includes a corresponding side of the peripheral rim (14, 54). A plurality of drainage ribs (28, 68) are molded on the drainage face (15, 53) in each sector such that the ribs (28, 68) of a particular sector are parallel to the corresponding side of the peripheral rim (14, 54) in that particular sector.

Abstract: A three phase process for determining total organic halides in water. The first phase is a sorptive process including passing a liquid through a packed bed of sorptive material thereby removing quantitatively, purgeable and non-purgeable, organic halides and thereafter passing an inorganic halide displacement wash solution through the bed to displace inorganic halides. The second and third phases are a combination combustion and titration whereby organic bromides and other organic halides entering the combustion phase are quantitatively titrated coulometrically.

Abstract: A machine for dispersing gas bubbles in a liquid includes a horizontal series of adjacent flotation cells without baffles or mechanical gas distribution means. In each cell, an ejection device is mounted to expel a two-phase gas-liquid mixture into the cell. Liquid is pumped into the ejection devices so that the density and energy of the mixture at the point of ejection falls within Region I In FIG. 3.

Abstract: A machine which utilizes hydraulic effects to disperse gas bubbles throughout a contained liquid includes a feed duct mounted to introduce raw liquid into the contained liquid. The feed duct comprises a first hollow tubular member into which a stream of processed liquid is pumped. A second hollow tubular member is affixed outside, and concentric with, the first tubular member so that space is formed around the open end of the first tubular member. Raw liquid is introduced into the space between the two members, and the processed liquid aspirates the raw liquid through the feed duct.

Abstract: Apparatus for countercurrent washing of finely divided solids comprising a vertical tank divided by transverse plates into a plurality of superimposed compartments, a single opening in each plate, a rake in each compartment for scraping settled solids on the plate to the opening, an inlet in the uppermost compartment for introducing solids, an outlet in the bottom of the lowermost compartment for discharge of settled solids, a wash liquor inlet in a lower zone of the lowermost compartment, a wash liquor outlet in the uppermost compartment for liquid discharge and valves for regulating the rate of introduction of both solids at the top of the tank and wash liquor at the bottom. Tubular components may depend from the edge of the single opening in each plate.

Abstract: The invention provides a filter plate of increased size which includes a reinforcing bar which subdivides the inner face of the plate into distinct drainage areas. The drainage areas are in liquid flow communication with each other via recess formed in the reinforcing bar. The plate is provided with raised spacing elements which are positioned in a special pattern to provide uniform deflection across the plate when the filter press is under pressure. The plate is further provided with a staggered, offset pattern of drainage ribs which enhances filter cloth support, increases plate strength and improves liquid flow around the spacing elements.

Abstract: A sector body for use in a rotary disc dewatering apparatus is provided with a radially extending groove on each of its opposing faces. Any slackness in a filter medium fabric covering the sector body is gathered into the radial grooves. A caulking compound is applied over the filter medium in the radial grooves to maintain tautness of the filter medium.

Abstract: A resin cartridge injection device for use in roof bolting apparatus in the mining industry includes a turret carrying both the hole drilling carriage and the bolt inserting carriage as well as a feed line for introducing the resin cartridge or cartridges into the drilled hole, before bolt insertion, by way of a flexible hose from a remote control station. The cartridges are conveyed from the control station into the hole pneumatically. Indexing of the turret will select either the drilling carriage, the cartridge inserter or the bolt insertion carriage into an operating position, as desired.

Abstract: A system for drying and burning wet waste materials includes a multiple hearth furnace having an upper, drying zone and a lower, burning zone. Wet waste material is introduced into the upper, drying zone and dried with a stream of hot air, and the stream of air is then conveyed to a condenser to remove water. The stream of air from the condenser is then conveyed to the center column of the furnace wherein it is heated, and the hot air is then introduced into the lower, burning zone of the furnace to aid combustion. Hot gaseous products of combustion are conveyed from the burning zone to an afterburner, and the gases leaving the afterburner are transferred to a heat exchanger and then discharged. In the heat exchanger a stream of ambient air is heated, and the heated air is then conveyed to the upper, drying zone.

Abstract: The disclosure relates to collector electrodes for electrostatic precipitators and particularly to generally annular in cross section hollow cylindrical collector electrodes having a pair of spaced concentric wall structures with a filler means disposed therebetween, the filler means being a lightweight filler means and hermetically sealed in and between said wall structures. The disclosure also relates to fixture means in the lower ends of the hollow cylindrical collector electrodes, the fixture means comprising internally screw threaded openings in blocks secured or fixed to the lower ends of the collector electrode so as to provide for the use of screw threaded bolts for securing the lower ends of the collector electrode structures in juxtaposition. The disclosure also relates to modifications and/or various species of the lightweight filler means between the inner and outer walls of the collector electrode.

Abstract: An apparatus for clarifying liquid waste having a tank with a center column mounted in its center and suction pipes to remove sludge which has settled to the floor of the tank. The center column is provided with an influent trough to introduce liquid waste into the tank, and ports are formed in the upper part of the column to introduce waste into the influent trough. The ports and the influent trough are located at about the level of the liquid in the tank so that the waste leaving the ports creates a radially outward current on the surface of the liquid in the tank to carry scum towards the periphery of the tank for collection.

Abstract: An apparatus for filter backwashing includes a vessel containing a bed of filter media. Laterals with nozzles are disposed below the filter media to convey backwashing air and water into the filter bed. Below the laterals are located a manifold and a distribution plenum to carry air into the laterals. The manifold and the distribution plenum are separated by a common wall having a plurality of ports to provide communication therebetween. Communication between the distribution plenum and the laterals is provided by a plurality of conduits, one conduit extending into each lateral from the distribution plenum.

Abstract: A spray nozzle which transforms a stream of water into a thin-walled tubular sheet which is atomized over a hydrostep. The nozzle comprises a body, the main portion of which has a cylindrical contour and a central passage of venturi shape, with the passage being of cloverleaf formation in horizontal cross-section, presenting a plurality of helical recesses which open onto the venturi passage. The lower end of the latter is generally bell-shaped and formed with a cylindrical hydrostep. A conduit for air under pressure enters the venturi passage from the upper end of the body and has a discharge end at the axis of the venturi passage and slightly above its waist.

Abstract: The following disclosure teaches ways and means for incinerating organic materials in a multiple hearth furnace equipped with an afterburner. In the furnace, the wastes are pyrolyzed in an oxygen deficient atmosphere which is regulated to only partially complete the oxidation of the organic substances which are pyrolyzed from the wastes. In the lower part of the furnace fixed carbon is substantially burned. In the afterburner, air is introduced to complete the oxidation of the partially oxidized substances carried by gases and vapors from the furnace. The air supply to the afterburner is controlled so that, at temperatures above a predetermined temperature, the quantity of air introduced is increased with increasing temperatures and is decreased with decreasing temperatures.

Abstract: A flow preconditioner for an electrostatic precipitator which removes particulate matter from a stream of polluted gas immediately after it passes through a tangential inlet at the lower end of a vertical cylindrical housing and straightens and divides the stream into laminations parallel to the axis of the housing. It comprises an annular ledge or choke ring extending inwardly from said housing above the inlet and an assembly of vanes above said ledge extending radially from the axis of the housing and angularly spaced apart. Each of said vanes has a flow receiving edge directed toward said inlet, a curved portion extending upwardly and away from said inlet, and a flat portion extending upwardly from said curved portion in a plane parallel to the housing axis.

Abstract: A duct system for distributing humidified air from a humidifier has a duct and an eliminator sheet assembly mounted at an outlet of the duct. The eliminator sheet assembly includes eliminator sheets movably mounted in the outlet of the duct, and means for securing the eliminator sheets in a plurality of positions so that the direction of air discharged from the outlet can be changed. A structural member for mounting the eliminator sheet assembly at the duct includes a track defined by sidewalls, one of which sidewalls extends upward of the other to capture droplets emitted from the eliminator sheet assembly, and a drain plate assembly for catching condensation falling from the duct. The drain plate assembly includes an elongated trough for attachment to the duct, the trough having two sidewalls and a flexible partition. The partition has an inverted V-shaped cross section and divides the trough into two compartments extending side-by-side.

Abstract: A humidification apparatus including a housing, a fan assembly mounted in the housing and having conduits extending therein, a slinger assembly rotatably mounted in the housing adjacent to and coaxial with the fan assembly and having vanes on a surface thereof, and water feed means for delivering water through the conduits in the fan assembly to the surface of the slinger assembly.

Abstract: The following disclosure teaches means for thickening primary and secondary sewage sludge. The disclosed apparatus comprises a tank having upper and lower feedwells disposed therein. Primary sludge is introduced into the lower feedwell and flows into the lower part of the tank to thicken therein. Secondary sludge is aerated and introduced into the upper feedwell so that it flows therefrom and thickens in the upper part of the tank by flotation type thickening.

Abstract: In an electrostatic precipitator, a downwardly directed corona discharge is produced at the entrance to dust collecting hoppers attached at the bottom of the precipitator chamber, the corona discharge being produced by an array of corona discharge points connected to a high voltage source and a grounded electrode grid positioned below the corona points near the hopper entrance either in the hopper or in the chamber.