Abstract: A pilot regulator has a main housing with a sensing chamber and a separate receiving chamber. The sensing chamber connects to the system for sensing. The receiving chamber is adapted to connect its inlet to the system upstream of the pilot and to the load line of the valve to be controlled and to connect its outlet downstream thereof, a cartridge containing a complete valve is removably received in the receiving chamber in position to control flow therethrough between the inlet and outlet. And a mechanism is disclosed for opening and closing the valve in response to sensing chamber pressure changes. The cartridge with its valve are removable as a unit for repair, mode change or replacement without disturbing connections to system.

Abstract: A method for sludge disposal in a single compartment furnace in which fouling of the apparatus by low melting eutectics and/or the release to the atmosphere of heavy metal fumes is avoided by limiting the temperature in the combustion bed and in the overlying freeboard to be below the eutectic melting or heavy metal fuming point then immediately cooling and scrubbing the gases and only thereafter subjecting the resulting scrubbed and cooled gases to high temperature afterburning carried out with appropriate heat exchange functions. Apparatus is also disclosed for carrying out the method in a fluidized bed reactor.

Abstract: A method and apparatus arrangement for continuous cooking of food in hot oil with clarification, purification and recycle of oil. Particulates-laden oil from the cooker is passed through a comminutor then through a precoat filter to remove particulates. The filter bed may also contain a quantity of adsorbent to remove free fatty acid from the oil before reuse. Elevated temperatures are maintained and the operation is conducted in an oxygen-poor environment. An apparatus arrangement includes a cooker, a comminutor and an enclosed precoat filter through which all oil passes. Appropriate piping and controls are provided.

Abstract: Medium temperature (500.degree. F.-1100.degree. F.) wet off-gases from the final drying zone of counterflow incineration of waste sludge are scrubbed and cooled before heating to final high temperature in an afterburner and the resulting hot dry gases are used to preheat the scrubbed and cooled gases prior to entry of said gases into the afterburner.

Abstract: Individual elongated radiant heat panel modules are secured together along their side edges to form a panel; and a plurality of transverse spaced-apart stiffeners are connected at a plurality of connection sites across the panel back to stiffen the panel and hold it fast. Each stiffener is fixedly connected to the panel at only one fixed connection site whereby to block relative movement between the stiffener and panel at said site; and each stiffener is additionally connected to the panel at a plurality of connection sites by spring clamps which hold the panel and modules thereof flat against the stiffener while permitting limited relative movement thereat between said stiffener and said panel. The connection sites on the stiffener are spaced therealong while the connections to the panels are at or adjacent the side edges of the individual modules. Adjacent individual modules are fixed to each other.

Abstract: High efficiency scrubbing of SO.sub.2 from stack gases by contact with a sodium based liquor is achieved by adjusting the pH of the scrubber liquor supplied to be in the range of 7.00 to 8.00; and a source of such liquor in a dual alkali system is disclosed in which a mixture of slaked lime and limestone is reacted with spent liquor in two stages one of which is at pH above 8.00, the other of which is at a pH below about 6.8 and the pH of the resulting regenerated liquor is adjusted to the desired pH range.

Abstract: A machine for repetitively throwing footballs by means of spaced apart confronting surfaces of spinning wheels. The machine includes a magazine with clamps for holding a plurality of footballs fixed in predetermined alignment for transfer for eventual throwing. A transfer arm is disclosed for sequentially transferring successive balls from the magazine to the throwing wheels while continuously holding them against misalignment until engagement by the throwing wheels. Several components of the machine are pivoted about a common axis to enable ball transfer without letting go of the balls. An operator's station and controls are provided so an operator can control all functions of the machine without touching the balls.

Abstract: Panel joining means that include a pair of identical elongated edge connectors secured along one edge of each panel to be joined and a bridge for attachment between the connectors. The edge connectors are cut from a single extrusion, are positioned to face each other, and are dimensioned so they can be secured to the panel before the finish lamina is applied by rollers or presses. The bridge is an extrusion that is symmetrical in cross section. It has continuous flanges along each side that register with complementary flanges on the connectors to complete positioning of the panels for joining. Changing configuration of only the bridge web will change the angle between adjoining panels.

Abstract: Apparatus for repairing a casting having a crack therein comprising a metal lock to extend across the crack and a lacing plug to fit in the crack, the metal lock formed as a rigid elongate member having a plurality of lobes formed from adjacent portions that are circular in cross-section and each having its center on the longitudinal axis of the elongate member, said lobes being of alternating large and small diameters and including a central large diameter lobe and at least one outer large diameter lobe at each side of the central large diameter lobe, said central large diameter lobe being spaced from each outer large diameter lobe by a small diameter lobe and with each lobe overlapping its adjacent lobe and extending through the elongate member; and the lacing plug including a head configured to receive a driving tool, a tapered shaft, a shoulder at a top of the tapered shaft, a non-threaded shaft portion interconnecting the head and the tapered shaft, a break-off groove formed in the non-threaded shaft por

Abstract: A horizontal belt filter with incremental belt advance in which an endless belt is trained about a plurality of idler rollers to pass through an upper run which includes a filter section and a lower return run. The belt passes over only idler rollers. To index the belt for incremental advance through the filter section, a pair of idler rollers on a common shiftable frame are rapidly simultaneously shifted while the belt in the return run is braked against movement. The braking is accomplished by a pinch bar that presses against an idler roller with the belt between the bar and roller. After shifting, the belt is reset by slow retraction of the shiftable frame. All shifting of the frame is done by hydraulic rams. To assist in incremental belt advance, an air cushion may be introduced under the belt in the filter section. For feed distribution, and stage separation, inflatable dams are provided above the belt in the filtering section.

Abstract: A circuit for controlling lamp flash interval and duration which comprises an NE555 integrated circuit in combination with resistances and capacitances. In the circuit, a resistor and a capacitive switch in series therewith govern flash interval. The capacitive switch includes a normally closed centrifugal switch which, when closed, presents a given capacitance in series with the resistor and when open presents a reduced capacitance in series with the resistor. The capacitance is provided by two capacitors. In one embodiment, when the switch is closed, one capacitor is in series with the resistor and the other is bypassed and when the switch is open, both capacitors are in series with each other and with the resistor. In the other embodiment, when the switch is closed, the two capacitors are parallel with each other and in series with the resistor and when the switch is open, one of said parallel capacitors is bypassed.

Abstract: A growing chamber defined by sidewalls and a top spanning the chamber inside the walls. The top is mounted to be vertically moveable to change the chamber height. The walls and top are coated to be ninety percent reflective. A horticultural lamp is mounted on the top and a timer turns it on and off. Carbon dioxide gas is supplied to the chamber the gas being controlled to be supplied intermittently, but only while the lamp is on.

Abstract: A process for the recovery of gypsum as a product of a dual alkali system for regeneration of a sodium base alkaline scrubber liquor in which the liquor reacts with ground limestone in two serially connected sludge blankets containing from 15%-40% solids in a liquor matrix and overlain by a relatively clear supernatant pool. Upon completion of regeneration the liquor is discharged from the second blanket to the scrubber cycle while a proportionate amount of the slurry is further treated to reduce its pH and/or increase its density and/or to displace regenerated scrubber from the matrix after which the slurry is transferred to a separate tank and there oxidized to gypsum then it is filtered. The filtrate is returned to the liquor regeneration cycle and the gypsum recovered as product.

Abstract: A wire dispensing device having two brackets adapted to mount on spaced apart step ladder support legs and a spool holding shaft spanning the distance between brackets and secured thereto. The shaft is so mounted to the brackets that one end can be swung out for adding or removing spools.

Abstract: A valve having a hollow body, an inlet and outlet for supplying and discharging pressured liquid, the valve body has a normally open top and a closure is provided to close said open top when positioned over the top opening and held in place by pressure of liquid supplied to the body, a closed air chamber communicates with the interior valve body and is arranged to hold compressed air therein.

Abstract: A process of regeneration of scrubber bleed liquor discharged from SO.sub.2 gas scrubber in which there are provided two serially connected sludge blankets containing 15-40% finely divided solids in liquor overlain by a relatively clear supernatant liquor. The bleed liquor is introduced into the first blanket along with an aqueous slurry of ground limestone, liquor and limestone partially react in the first blanket then they are transferred to the second blanket for further reaction, after which the liquor is recycled to the scrubber and a proportional amount of reacted limestone is wasted. The liquor has a relatively short residence time in the system on the order of 30-180 minutes while solids residence in the system is on the order of 6 to 24 hours. A special embodiment is provided for use when the first sludge blanket is in a relatively small tank in which only a portion of the bleed liquor is supplied to the first sludge blanket and the balance is injected directly into the second sludge blanket.

Abstract: A security plate for entrance doors adapted to be secured by tamper resistant fasteners to the stop member of a door frame. The plate is elongated to extend above and below the lock area of the door. The plate has a relatively thick flat edge that abuts a closed door and the plate is formed with a concave portion adajcent the thick edge and connected thereto by a smooth tool-deflecting ramp.

Abstract: A rotary filter drum in which the drum is a single cell having a perforated cylindrical wall and solid end walls. A hollow central shaft extends through the drum and its opposite ends extend axially from the end walls. The drum contains a plurality of relatively narrow elongated open-top pans that are equally spaced radially from and angularly about the central shaft. Each pan is defined by a bottom, spaced apart inner and outer sidewalls which extend the full length of the drum and the drum end walls. The pan walls are secured to the ends of the drum. The pans are located so the open tops face the direction of drum rotation and the entire leading edge of the outer sidewall of the pan is secured to the perforated cylindrical wall. A closed conduit connects the bottom portion of each pan to the central shaft which in turn connects to the vacuum source so the filtrate is removed from and vacuum applied to the interior of the drum solely through the central shaft but via the pans and connecting conduits.

Abstract: There is disclosed an illuminated flying saucer toy is which incandescent lamps are pulsed on and off by an astable multivibrator circuit. The circuit is arranged to pulse at a relatively slow rate when the toy is at rest and at a relatively increased rate when the toy spins at a rate above a predetermined minimum. The increased flash rate is provided through a normally open switch that closes upon rotation of the toy to insert additional resistance into the circuit in parallel with existing resistance thereby to reduce the resistance by which flash interval is determined.

Abstract: There is disclosed an elongated extruded beam having three parallel channels including a center channel and two side channels facing outwardly at a right angle to the center channel. The sidewalls of the center channel form the bases of the side channels, and the inside width of the center channel is greater than the thickness of the beam. There is also provided a separate clip having a base and a rectangular leg normal thereto, both the base and rectangular leg are of width to be received in all channels and the leg is of length to extend above the channel sidewalls. If desired, one of the outward facing channels may be omitted from the beam.