Abstract: A flexible frame structure for an implement includes a wing frame section with several fore-and-aft spaced, transversely extending rank tubes that are connected to surrounding support structure with conventional, non-resilient pin joints for rotation about a fore-and-aft extending horizontal rank axis. A transversely extending rear rank tube is rigidly connected to a fore-and-aft extending caster wheel support frame which extends forwardly above the ends of the rank tubes. A caster wheel projects forwardly from the end of the support frame out of interfering relationship with the forward tool-carrying rank. The rear rank tube and caster wheel support frame define a rigid L-shaped member which is connected to the adjacent frame section by a conventional pin and pivot structure for rotation about a first axis corresponding to the rank axis, and a second axis perpendicular to the forward direction.

Abstract: Frame sections on an implement are supported above the ground by lift wheel assemblies having positive mechanical depth stops and series connected lift cylinders. A pressure responsive bypass valve is installed in series with an orifice between the ports of the series connected cylinders. The valve permits the corresponding cylinder to be retracted and positively held against the depth stop and allows bypass flow to the next cylinder in series for continued retraction of the next cylinder until it bottoms against the stop. The orifice protects the bypass valve poppet from damaging high flows and controls the rate of descent of the other frame sections onto the remaining stops. The system permits the cylinders to positively maintain the down-stopped positions of the sections without unwanted looseness typical with slotted or other lost motion types of connections. A restrictor valve may be added to limit the maximum pressure so that all the bypass valves cannot open at the same time.

Abstract: A stroke limiting structure for use with a lift control system on an implement includes a reciprocating link operably connected to a hydraulic cylinder and to a lift wheel assembly on an implement frame section. The link is connected by a lost motion connection to depth gauging structure including gauge plates pivotally supported on a carrier. The plates are rotatable between disengaged and engaging positions without need for tools and are maintained together on the carrier to eliminate loose parts that could be misplaced or lost. The plates in the engaging position determine the lowermost position of the implement and provide a positive mechanical stop for the implement to eliminate depth control problems caused by cylinder leakage or the like. The lost motion connection eliminates unwanted movement of the plate carrier and facilitates gauge plate pivoting for depth adjustments.

Abstract: A process for preparing a polymeric form of ferric sulphate wherein an acidic aqueous solution including ferrous sulphate is oxidized to form ferric sulphate in the solution in an oxidation stage at ambient pressure and in the absence of oxidation catalyst using at least one oxidizing agent. The ferric sulphate is subsequently at least partially hydrolyzed by addition to the solution of at least one base. The ferric sulphate is kept in contact with the base at the temperature selected for a time sufficient for polymerization of the at least partially hydrolyzed ferric sulphate. The polyferric sulphate (PFS) obtained by embodiments of such a process can be used as a coagulant or flocculant in water treatments for decolorizing, purifying or reducing pollutants with improved performance compared to conventional ferric sulphate and aluminium sulphate treatments.

Abstract: A container device for transporting single servings of goods. A base has a central depression shaped to hold the goods and is circumvented by side walls conforming to the shape. This provides an upwardly facing primary shoulder region. The walls further include an exteriorly projecting first shoulder disposed below the primary shoulder, and a flared radially outwardly directed terminal edge having a second outwardly projecting shoulder. A cover has a top surface and side walls shaped to conform to the shape of the base. The side walls have an interiorly projecting first shoulder and terminate in a flared radially outwardly directed terminal edge. The interiorly projecting shoulder and terminal edge of the wall are aligned to interface with the first projecting shoulder and second projecting shoulder respectively of the base.

Abstract: A warhead adapted to be mounted to a conventional missile fired from anti-tank weaponry is formed with a piercing cone secured to a base containing a source of knockout gas and an actuator assembly. Upon piercing an aircraft fuselage, a collar encircling the cone translates rearwardly causing deployment of panels pivotally secured to the base portion and connected to the collar via connecting rods. Movement of the collar into wedging contact with the base of the piercing cone deploys the panels to their maximum extended position and simultaneously actuates the trigger assembly causing the knockout gas to be delivered into the aircraft interior through the piercing cone projecting through the fuselage into the interior.

Abstract: A collapsible foldaway dinghy is provided and consists of synthetic single skin having panels joined by flexible watertight webs which can be folded into a small package that will fit in a car trunk and cockpit locker. Thwarts having vertical ribs are secured to the sides of dinghy to act as support members and seats.

Abstract: A electro-mechanical device for measuring the angle made by two rotatably joined members comprising a pair of rotatably connected elongated arms and electrical circuit means mounted on one of the arms and associated with the rotatable pin connector of the arms. The circuit, powered by a battery, encodes the angle of the pin preferably via a potentiometer and transmits the information to a decoding device, preferably a voltmeter, and then to a digital display device also mounted on one of the arms.