Abstract: A mechanized harvester for tree borne crops. A plurality of crop harvesting heads are supported from a support station which is rotatably mounted on the end of an extendible boom. The boom, in turn, is rotatably mounted on a tractor. The support station includes an operator location from which an operator can control operation and movement not only of the crop harvesting heads and the support station but also of the tractor. Consequently, a single operator can accomplish the entire crop harvesting operation, including moving the tractor from place to place as needed, from a location which enables him to see the entire operation so that he can move the crop harvesting heads as needed to assure that all crops are harvested.

Abstract: 3-Prenyl-substituted-2-alkyl menaquinones are made by reacting an alkali metal salt of a 3-alkyl-4-alkoxy or aralkoxy-1-naphthol with a prenyl halide, and oxidizing the resulting 2-prenyl-3-alkyl-4-alkoxy or aralkoxy-1-naphthol to the corresponding 3-prenyl-substituted-2-alkyl menaquinone. There is also disclosed a procedure for making the alkali metal salts involving the preparation of an ether-ester and hydrogenolysis.

Abstract: A system for package weight control. The system includes a digital for receiving material sufficient in volume to at least equal a desired net weight of product. At least one conveyor is mounted for conveying the material from a like number of feeders disposed at one end of the conveyor to the hopper disposed at the other end of the conveyor. Each feeder may dispense substantially similar volumes of material at spaced locations on each conveyor as the conveyors are advanced through predetermined incremental distances. The accumulated weight of the material on each conveyor belt is measured and a first digital signal representing the accumulated weight is generated and stored by a control. Each new accumulation on each belt likewise is measured and a second ditigal signal and so on representative of the accumulation is generated and stored.

Abstract: Hollow membrane fibers are formed from a mixture of N-alkoxyalkyl polyamide, polyvinyl alcohol, di(lower alkyl) sulfoxide and water. The fibers are useful for separating chemicals, e.g., aliphatically-unsaturated hydrocarbons, from mixtures containing them.

Abstract: Urethane prepolymer compositions are made from 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethyl cyclohexane and polyols at a total NCO to OH ratio of at least 1.2:1, and the prepolymers are reacted with cycloaliphatic polyamines to give urea-urethanes. The urea-urethanes can be formed as films such as coatings on a substrate or as indpendent sheets or the urea-urethanes can be formed materials of greater thickness. The products exhibit good strength, high resistance to the discoloring effects of ultraviolet light, elastomeric and other desirable properties. Often the urea-urethane is prepared in solution but this may not be the procedure where the urethane prepolymer and polyamine are combined and more or less immediately placed in the desired form as a film or other article such as is done using a two component spray gun.The polyol component of the composition has as its major component aliphatic polyol having a molecular weight of at least about 500.

Abstract: Protective coating compositions are prepared comprising aliphatic polyol-derived silicates and zinc dust as a filler. The compositions provide long-life protection for ferrous substrates against rusting in moist and salty atmospheres. The zinc filler and silicate components may be compounded in one package or as two packages to be mixed prior to application as a film. Compositions comprising zinc filler and the aliphatic polyol-derived silicates with solvents, and with or without other fillers or organic polymeric materials are especially useful as coatings. A range of aliphatic polyol to total alkyl-type or alkoxyalkyl-type silicate reacted in making the polyol-derived silicates is about 0.15 to 1.8 moles of reactive OH grouping supplied by the polyol per mole of ester-exchangeable group in the silicates, the larger ratios being especially useful for the silicate reactants having up to, for instance, an average of 5 to 6 SiO.sub.

Abstract: An alkali metal-containing, organometallic product, which is hydrocarbon-soluble, is prepared by reacting an organo-alkali metal reactant in which the alkali metal atom is bonded to a carbon atom, e.g. cyclohexyl-lithium, with a di(organooxy)-alkaline earth metal reactant, e.g. di-n-butoxy-magnesium, in an organic solvent at about -20.degree. to +120.degree.C. The organo-alkali metal reactant can be prepared by reacting an organo halide with an alkali metal, and this can be done in situ, i.e. in the presence of the di(organooxy)-alkaline earth metal reactant. The organometallic product has approximately the same chemical reactivity as the organo-alkali metal reactant from which it is prepared, but is more soluble in hydrocarbon solvents.

Abstract: A process is provided for the catalytic production of methane from carbon oxides and hydrogen wherein water is introduced into the reaction vessel for the removal of the heat of reaction by the production of steam with the use of a catalyst effective at a temperature below 500.degree.F. The catalyst is a Group 8 metal, preferably mixtures of nickel and metals of the platinum group. Feedstock gas is normally obtained by gasification of fossil fuels or aliphatic alcohols with steam and/or oxygen.