Abstract: A spring assembly having a coil containing a core and methods and apparatus for manufacturing same are disclosed. The coil includes a core between reduced portions of the coil. One device for manufacturing the coil includes a coiling machine having an insert device operable with a coiler. The coiler is programmed to form coils of appropriate diameter along the length of the coil, including a diameter sufficiently large to contain the core and two diameters sufficiently small to retain the core in the coil. The insert device transfers the core to the coil after the first small diameter is formed and before the second small diameter is formed. The coil with the core contained between the two small diameters is thereby manufactured in a unified automated process.

Abstract: A spring assembly having a coil containing a core and methods and apparatus for manufacturing same are disclosed. The coil includes a core between reduced portions of the coil. One device for manufacturing the coil includes a coiling machine having an insert device operable with a coiler. The coiler is programmed to form coils of appropriate diameter along the length of the coil, including a diameter sufficiently large to contain the core and two diameters sufficiently small to retain the core in the coil. The insert device transfers the core to the coil after the first small diameter is formed and before the second small diameter is formed. The coil with the core contained between the two small diameters is thereby manufactured in a unified automated process.

Abstract: A spring assembly having a coil containing a core and methods and apparatus for manufacturing same are disclosed. The coil includes a core between reduced portions of the coil. One device for manufacturing the coil includes a coiling machine having an insert device operable with a coiler. The coiler is programmed to form coils of appropriate diameter along the length of the coil, including a diameter sufficiently large to contain the core and two diameters sufficiently small to retain the core in the coil. The insert device transfers the core to the coil after the first small diameter is formed and before the second small diameter is formed. The coil with the core contained between the two small diameters is thereby manufactured in a unified automated process.

Abstract: A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 40% to 90% by weight based on total monomers of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene, and (b) about 60% to 10% by weight based on total monomers of a specified vinyl aromatic component, preferably alpha-methylstyrene; para-methyl-&agr;-methylstyrene; 2,4-diphenyl-4-methyl-1-pentene, or mixtures thereof, and (2) recovering a product having a Ring and Ball softening point of about 70° to about 150° C. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.

Abstract: A compressor comprising a compressor housing including a cylinder block forming seven cylinders equiangularly spaced apart and extending axially therein. Each of the cylinders is slidably fitted with a piston, and a drive mechanism is coupled to the pistons to reciprocate them within the cylinders to create fluid suction and discharge. The drive mechanism includes a drive shaft rotatably supported in the housing and coupling means for converting the rotary motion of the drive shaft to reciprocating motion of the pistons. The coupling means may also include a rotor coupled to the drive shaft and a slant plate having a surface disposed at an inclined angle relative to the drive shaft. A valve plate fabricated from steel having a hardness in a range of about 120 to 450 Hv seals the cylinders, such that fluid is compressed between each of the pistons and the valve plate.

Abstract: A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 40% to 90% by weight based on total monomers of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene, and (b) about 60% to 10% by weight based on total monomers of a specified vinyl aromatic component, preferably alpha-methylstyrene; para-methyl-.alpha.-methyl-styrene; 2,4-diphenyl-4-methyl-1-pentene, or mixtures thereof, and (2) recovering a product having a Ring and Ball softening point of about 70.degree. to about 150.degree. C. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.

Abstract: A method for separating emulsified oil from water in petroleum production is disclosed. Low molecular weight polymers of dimethylaminoethyl acrylate methyl chloride and benzyl chloride quaternary salt have good activity as reverse emulsion breakers for freeing oil tied up as a oil-in-water emulsion. The polymer reverse emulsion breakers are preferably prepared and used as aqueous solutions to obviate the need for inversion techniques and the use of hydrocarbon compatibilizers and surfactants as required for a latex polymer.

Abstract: The invention relates to a service brake system for towed vehicles and particularly to a service brake system for double trailer combinations and a metering relay valve therefor. According to the invention, a variable reaction amplifying relay valve, controlled by service brake control line pressure, meters reservoir pressure from the leading trailer to the service brake control line in the trailing trailer. Below a predetermined pressure, the metering relay valve provides an amplified pressure output relative to input. Above this predetermined point, the output pressure is substantially one-to-one.

Abstract: A packaging container comprising a stiff outer casing and a plastics-film liner, the liner comprising a plastics-film bag having one wall formed by overlapping panels, with a filling valve formed in specified manner between the panels in the overlap.

Abstract: The invention is an improved liquid photopolymer applicator means for use on photorelief printing platemaking machines. The applicator means comprises a substantially vertical plate which acts as both the rear wall of the applicator means and as a doctor blade for uniformly spreading the photopolymer. The remaining sides of the applicator means form a scoop means which is substantially movably connected to the vertical plate to define a bottom slot-like opening immediately in front of the vertical plate to discharge the photopolymer at a controlled rate, said photopolymer being doctored by the vertical plate as the entire assembly traverses the length of the platemaking machine. The entire assembly is a part of a movable carriage which traverses the length of the platemaking machine, said carriage being movably mounted to said platemaking machine upon a shim which determines the thickness of the photopolymer plate desired, and said carriage driven by an adjustable gear means.

Abstract: A magnetic disk drive unit or machine adapted to receive disk-jacket assemblies for magnetically reading from and writing on a disk in such an assembly. The jacket of the assembly is made of a material with high electrical resistance which accumulates static electricity through usual handling. The machine includes a skirt having an electrically conducting layer thereon and hung on an upper portion of the machine so that the skirt is in contact with an outer surface of the jacket for draining off an electrostatic charge accumulation on the jacket very quickly.

Abstract: A rotary magnetic record disk assembly comprising a magnetic disk which is rotatably disposed within a containing jacket of material of high electrically insulating characteristics. An electrically conductive layer is disposed on the inside surface of the jacket for draining away electrostatic charge on the jacket.

Abstract: A first lever has an end which engages the fixed member, a second lever has an end which will dig into the movable member and a link is pivotally connected to each lever adjacent its working end so that both levers may be squeezed together causing the working end of the second lever to dig into the movable member. The second lever may then be moved axially to pull the movable member.

Abstract: A combination shut-off pressure surge relief and reverse flow prevention valve is disclosed comprising manually rotatable valve stem with a movable valve member at its lower end that is biased towards its closed position by a spring so that flow in a normal direction will open the valve but reverse flow is prevented. The pressure surge relief valve is completely enclosed within the rotatable valve stem and comprises a spring loaded slidable piston that is movable by abnormal pressure surges to expose relief ports for allowing controlled leakage under surge conditions. The leakage from the ports is deflected by a surrounding shroud on the handle of the valve stem.

Abstract: Apparatus for positioning a continuous strip on a movable support surface in a zigzag pattern including a traversing guide member having a slot passage disposed longitudinally of the movement of the support surface, means for reducing friction in the slot passage of the guide member, and positioning means between the guide member and the support surface movable into the path of the strip at the ends of each traverse to form the reversals of the zigzag pattern.

Abstract: In a plastics bag having a vent comprising overlapping panels forming a part of the bag wall, with off-set apertures providing air passages from the bag interior to the space between the panels and thence to the atmosphere, at least one of the panels has an uneven surface facing the venting space in the vicinity of the internal venting apertures.