Abstract: Silicone surfactants having a siloxane backbone and polyether pendants having average atomic masses of 2250. The surfactants of the invention operate in polyurethane foam compositions to provide stable foams over a range of surfactant concentrations while still producing product foams without splits. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.

Abstract: Silicone surfactants having a siloxane backbone and polyether pendants having average atomic masses of 2250. The surfactants of the invention operate in polyurethane foam compositions to provide stable foams over a range of surfactant concentrations while still producing product foams without splits. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.

Abstract: A method for producing a protective coating on the surface of a carbonaceous substrate is described. A substantially uniform coating of a liquid or solid precursor material is provided on the surface of the substrate. The precursor material is one which has boron-oxygen bonds and is substantially non-reactive with the substrate at a first relatively low temperature and is capable of reacting with the substrate at a second temperature which is substantially higher than the first temperature. The substrate is then raised to the second temperature to react the coating with the substrate to form a porous region of substantially uniform depth in the substrate surface. This region contains interconnecting interstices and boron carbide. The interconnecting interstices are then at least partially filled with a glass forming material such as boron, boron oxide, boron carbide, silicon, silicon alloy, silicon dioxide, silicon nitride, silicon oxynitride, germania, and mixtures thereof.

Abstract: An extremely hard, fine grained tungsten carbide produced by thermochemical deposition is described. The tungsten carbide consists primarily of substantially pure tungsten carbide wherein the tungsten carbide consists of WC.sub.1-x, where x is 0 to about 0.4. The disclosed tungsten carbide is free of columnar grains and consists essentially of extremely fine, equiaxial crystals. Also disclosed is a method of producing the disclosed material.

Abstract: A feed magazine for feeding items for an envelope insertion apparatus is adjustable along three axes and includes a resiliently mounted adjustable floor plate which permits tilting adjustment about a lateral axis, and includes a jam detector for signaling misfeeds.

Abstract: A process for absorbing olefinically-unsaturated hydrocarbon compounds from feedstreams containing such compounds by contacting said feed streams with metal-diketone absorbents of the formula: ##STR1## wherein R.sub.1 is trichloroemthyl or R.sub.F ; R.sub.F is C.sub.n F.sub.2n+1 and n is 1-8; R.sub.2 is H or hydrocarbyl of 2-20 carbon atoms having at least one olefinic unsaturated bond; M.sup.I is Cu.sup.I or Ag.sup.I and R.sub.3 is hydrocarbyl of 2-20 carbon atoms having at least one olefinic unsaturated bond.

Abstract: In one embodiment of the present invention, a pulse fog generator powered by a resonant intermittent combustion device having a carburetor and a combustion antechamber, includes a starting air supply system for directing a flow of starting air into the antechamber, comprising an inlet/outlet ball check valve mounted over the discharge opening piston chamber within which a piston head is reciprocated by a connecting rod eccentrically mounted to an electric motor. A priming pump is mounted on the carburetor, and comprises a priming fuel chamber hydraulically communicating with the carburetor and a piston reciprocatable within the priming fuel chamber to draw fuel from a fuel tank into the priming fuel chamber and to discharge the fuel from the priming fuel chamber into the carburetor. In lieu of the reciprocatable piston, a resilient priming bulb and valve assembly can supply the priming fuel to the throat passage of the carburetor in another embodiment.

Abstract: A process for absorbing carbon monoxide and/or olefinically-unsaturated compounds from feedstreams containing such compounds by contacting the feed streams with metal-diketone absorbents of the formula: ##STR1## wherein R.sub.1 is trichloromethyl or R.sub.F ; R.sub.F is C.sub.n F.sub.2n+1 and n is 1-8; R.sub.2 is H or hydrocarbyl of 2-20 carbon atoms having at least one olefinic unsaturated bond; M.sup.I is Cu.sup.I or Ag.sup.I and R.sub.3 is hydrocarbyl of 2-20 carbon atoms having at least one olefinic unsaturated bond.

Abstract: Novel compounds for absorbing carbon monoxide and olefinically-unsaturated compounds from feedstreams are of the formula ##STR1## wherein R.sub.1 is trichloromethyl or R.sub.F ; R.sub.F is C.sub.n F.sub.2n+1 and n is 1-8; R.sub.2 is H or hydrocarbyl of 2-20 carbon atoms having at least one olefinic unsaturated bond; M.sup.I is Cu.sup.I or Ag.sup.I and R.sub.3 is hydrocarbyl of 2-20 carbon atoms having at least one olefinic unsaturated bond.

Abstract: In the preferred embodiment of the present invention, a pulse fog generator powered by a resonant intermittent combustion device having a carburetor and a combustion antechamber, includes a starting air supply system for directing a flow of starting air into the antechamber, comprising an inlet/outlet check valve mounted over the discharge opening of a bellows that is reciprocated by a connecting rod eccentrically mounted to an electric motor. A priming pump is mounted on the carburetor, and comprises a priming fuel chamber hydraulically communicating with the carburetor and a piston reciprocatable within the priming fuel chamber to draw fuel from a fuel tank into the priming fuel chamber and to discharge the fuel from the priming fuel chamber into the carburetor.

Abstract: A method of making blow-molded perforated tubing and the tubing made by said method is provided. In the method of the invention, hollow-walled protuberances are blow molded into the side of the tubing as the tubing is formed and perforations are formed by cutting the hollow-walled protuberances.

Abstract: A vacuum cleaning tool adapter for vacuum cleaning systems having a control device incorporated within the adapter. The control device includes an electrical switch and may also include other circuit control devices. Also incorporated in the adapter is a connect-disconnect connector for mechanically interengaging the adapter with a hose assembly leading to the vacuum cleaner, which also provides electrical continuity from the adapter through current conducting reinforcing members in the hose assembly and into the vacuum cleaner. The adapter provides for electrically connecting the cleaning tool into the system, and the switch is used to turn the power on and off from the vacuum cleaner motor to the cleaning tool. An additional switch may also be located in the adapter for controlling the vacuum cleaner motor itself.

Abstract: Disclosed is a pulse-jet engine powered, fog producing device using a carburetor to feed atomized fuel to the engine combustion chamber, the carburetor operation being characterized by a positive pressurization of a diaphragm-walled chamber to open a fuel inlet valve during the engine starting interval, and provision of a positive pressure fuel delivery to the carburetor utilizing the combustion pressure pulses of the engine as the fuel pumping impetus.

Abstract: Disclosed is a constant pressure spraying apparatus in which the motor driven pump piston moves within a pump housing and valve assembly which are carried by a cap or closure for the fluid tank forming the reservoir of fluid to be pumped and sprayed. The cap structure is shaped so as to provide a drain sump for fluid leaking past the pump piston.