Abstract: An automatic feedback control system for use with an off-road vehicle having an adjustable-elevation, ground-engaging implement, such as an agricultural tractor with a three-point hitch and a plough or cultivator, is disclosed. The automatic control system provides an engine-sensing draft control system which adjusts the height or elevation of the ground-engaging implement so as to maintain the draft or load forces experienced by the vehicle at a substantially constant level. The determination of the draft being produced by the ground-engaging implement is determined by the engine speed deviation from a target point speed which is indicated by an operator-set desired no-load engine speed and an operator-set engine lug-down value or load.

Abstract: This invention relates to certain pyrazole sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.

Abstract: Sulfonylureas with uniquely substituted heterocycles demonstrate activity as agricultural chemicals.

Abstract: An actuating mechanism for a hydraulic control system including a valve body having one or more valves slidably arranged therein. Each valve is movable along a linear path in a manner regulating fluid flow through the valve body as a function of the linear position of the valve. The actuating mechanism includes a rotatable cam for selectively positioning each valve relative the valve body. Each valve is operatively connected to the cam such that each valve is positioned as a function of cam rotation. The cam is rotated about an axis extending substantially perpendicular to the linear path of each valve.

Abstract: A haulage unit of a coal-getting machine comprises a drive (1) an output shaft of which is associated with a conveyor (2) through the medium of a kinematic linkage. The kinematic linkage incorporates a sprocket (3) installed on the output shaft and meshing elements (4) coming in mesh with teeth of the sprocket (3). The meshing elements (4) are installed for rotation about the axis thereof and for a limited longitudinal displacement in a guide (5). The guide (5) is essentially presented by links articulated to one another. Each link is installed on a carrying element (7) secured on the conveyor (2) and is formed by two arcuate elements (8,9) facing each other by concave portions thereof, and connected in a diametrical plane by at least two fastening members (10) so that a clearance (11) is formed between the arcuate elements. Each fastening member (10) mounts the meshing element (4) in the form of a rolling body.

Abstract: An illumination device for producing uniform illumination of a surface, comprising several parallel optical conductors which are placed above an optically reflecting surface, and whose reflecting outside sheath is removed locally at least in such a way that the light thereby emerging from the optical conductor is reflected by the reflecting surface to the surface to be illuminated. The optical conductors are spaced at such intervals and placed at such a distance above the reflecting surface that the light reflected by the reflecting surface can reach the surface to be illuminated on the other side of the optical conductors through the space between the optical conductors in such a way that the most uniform possible illumination of said surface is obtained.

Abstract: Macromonomer prepared by contacting and reacting a polymer (oligomer) having at least three monomer repeat units and at least one silyl ether group, in the presence of an anion catalyst, with a terminally unsaturated acyl fluoride or sulfonyl fluoride.

Abstract: Polyoxymethylene/thermoplastic polyurethane compositions having 5-40 weight percent polyurethane are modified by incorporating therein 0.05-1.0 weight percent of a polycarbodiimide (or a mixture of polycarbodiimides) having a molecular weight of about 1000 and containing units of the formula ##STR1## where n has an average value of about 3, to improve resistance to discoloration and decomposition.

Abstract: A cone crusher includes outer and inner cones (2, 3) with a discharge slot (5) between them, a shaft (7) of the inner cone (3), a means for adjusting the size of the discharge slot (5) and a means for imparting gyrations to the inner cone (3). The means for adjusting the size of the discharge slot (5) is a reciprocation mechanism (12) and the means for imparting gyrations to the inner cone is an unbalanced vibrator (17).

Abstract: A composition for the preparation of low-firing dielectric layers comprising an admixture of finely divided particles of:(a) MgTiO.sub.3 ;(b) 0-10% wt., basis total solids, CaTiO.sub.3 ;(c) 5-10% wt., basis total solids, zinc borate frit in which the atomic ratio of zinc to boron is 1-3, the frit containing 0-5% wt., basis total solids, BaO, and in which up to 50 mol % of the B.sub.2 O.sub.3 is replaced by Al.sub.2 O.sub.3 ;(d) 0-5% wt., basis total solids, of a barium compound selected from BaCO.sub.3, BaTiO.sub.3 and mixtures thereof; and(e) an amount of a divalent metal oxide or precursor thereof selected from MgO, CaO, ZnO and mixtures thereof in an amount approximately molarly equivalent to the amount of BaTiO.sub.3 in the composition, the total amount of Ba in the composition, calculated as BaO, being 1-5% wt. of the total solids, the solids being free of Pb-, Bi- and Cd-containing compounds.

Abstract: An apparatus for spinning includes a polymer inlet zone and a spinneret assembly. A first metering pump for pumping a first set of molten polymer streams of equal flow rate to the polymer inlet zone and a second metering pump for pumping a second set of two molten polymer streams of equal flow rate to the polymer inlet zone are provided. The second pump having twice the capacity of the first pump. The spinneret assembly comprises a pair of spinnerets interchangeably locatable in the spinning pack. One of the spinnerets is adapted to combine the first set of streams to produce three ends of filaments and the other of the spinnerets is adapted to combine each of the first streams with a respective one of the second streams to provide two ends of filaments.

Abstract: An aspirator attachment connectable to a conventional grain/air drill hopper for emptying or filling the hopper with grain or fertilizer. The attachment comprises a simple air flow director which may be readily connected to a discharge port of the centrifugal blower carried by the hopper. Standard tubing or hoses are connected to the air flow director for picking up the grain or fertilizer and for directing discharge thereof to a desired location. No modification of existing grain hopper structure is required.

Abstract: An improved gas-phase process for the manufacture of 1,1,1-trifluorodichloroethane and/or 1,1,1,2-tetrafluorochloroethane by contacting a suitable tetrahaloethylene and/or pentahaloethane with hydrogen fluoride in the presence of Cr.sub.2 O.sub.3, prepared by pyrolysis of (NH.sub.4).sub.2 Cr.sub.2 O.sub.7, the reaction being conducted under controlled conditions whereby the production of pentafluoroethane is minimized.

Abstract: Method of mounting refined contact surfaces on a substrate and substrate provided with such contact surfaces.A method for mounting contact surface elements on the ends of strip conductors along the edge of a substrate. A solder mixed with adhesive is applied to the soldering surface at ends of the strip conductors. Contact surfaces each having a refined, f.i. gold plated, top surface and an activated, f.i. tin plated, bottom surface, are placed respectively on each soldering surface. Heat is applied to melt the solder particles and provide a good electrical connection between each surface contact and strip conductor. The substrate mounted with the contact elements has a plurality of components mounted on one surface thereof and interconnected by the strip conductors. The substrate is adapted to be plugged into an edge connector along its edge with the mounted contact surface elements.

Abstract: A silica catalyst that retains its high initial activity for a longer time is obtained by forming the catalyst from an aquasol that was obtained by mixing an alkali metal aluminate with an aqueous solution of alkali metal silicate.

Abstract: This invention relates to novel condensed ring sulfonylureas and their use as herbicides and growth regulants.

Abstract: A thermoplastic elastomer blend of 15-90 parts of a continuous matrix of a thermoplastic elastomeric copolyester having a melting point of 100.degree.-200.degree. C. and 10-85 parts of crosslinked polychloroprene present in the form of finely divided particles.

Abstract: A zero insertion force socket for integrated circuits having a contact pattern formed on the upper surface of a resilient circuit on which an integrated circuit is adapted to be placed with its leads in contact with the contact pattern. A plurality of frames having different sized cutouts conforming to the shape of integrated circuit cases of different sizes are used to position integrated circuits having cases of different sizes at predetermined locations on the contact pattern. The positioning frames are pivotally mounted on a common pin, and they nest together so that at least some of the positioning frames fit within the rectangular cutout of the next larger positioning frame. In order to bias the integrated circuit into the resilient circuit, a lid having a plunger is positioned over the integrated circuit. The plunder contacts the upper surface of the integrated circuit case to force it against the resilient circuit either with a constant force or a constant displacement.

Abstract: A high temperature filter felt comprising a scrim and an entangled batt. The machine-direction component of the scrim is made up of intermeshed continuous filament yarns which are 40 to 75% glass fibers and 25 to 60% poly(tetrafluoroethylene) fibers. The fiber of the cross-machine direction component of the scrim is glass, poly(tetrafluoroethylene), aramid, polyacrylate, polyphenylene sulfide or blends of these fibers or the bulked yarn previously described at the machine-direction yarn.