Abstract: A functionally active fraction of plasmin is provided which is capable of forming with streptokinase a complex with plasminogen activator activity.The fraction is made by reducing the disulfide bonds of plasmin molecules while inhibiting the serine protease activity of the plasmin and separating the light (B) chain fraction from the reaction product.

Abstract: A solar operated turbine power generator is provided in which air is compressed and supplied to a transparent tube contained within a reflector which concentrates the solar energy upon the tube. The tube is sealed at one end and a tubular collector of radiant heat is positioned concentrically within the tube. The compressed air is supplied to the other end of the tube and is passed through the tube outside of the collector and then back inside of the collector to a turbine which is sealed to the collector. The concentrated radiant energy and the passage of the compressed air through the tube and the collector provide compressed air at the inlet to the turbine at a temperature of at least about 300.degree. C. The compressed hot air is exhausted to atmosphere to drive the turbine and the exhaust is through a heat exchanger which transfers heat to the compressed air at the inlet end of the tube. The turbine drives the compressor and external power generating equipment.

Abstract: A closed cycle solar operated power generator is provided in which a tubular heat collector positioned concentrically within a transparent tube sealed at one end is radiantly heated and a compressor takes gas at low temperature and pressure and supplies it to the open end of the transparent tube at an elevated pressure. The compressed gas passes through the transparent tube outside of said tubular collector and then returns to the open end thereof inside of the tubular collector to a turbine positioned within a housing sealed to the tubular collector. The turbine exhaust passes through a heat exchanger to heat the compressed gases entering the transparent tube, and the cooled exhaust enters a conductive tube sealed at one end and having its open end sealed to the open end of the transparent tube. The conductive tube is cooled by conduction or radiation to further cool the exhaust which then returns to the compressor through a tubular compressor inlet to complete the closed cycle.

Abstract: A reciprocating harpoon-type conveyor for transporting swarf-like material along a conveyor trough is provided with non-jamming barbs each of which comprises a multi-faced member secured to the inside surface of the upwardly extending walls of the conveyor trough. Each barb has an inwardly-slanted feed surface which increasingly projects into the conveyor trough in the downstream direction and a rearwardly slanted retaining surface which extends upwardly in the upstream direction and away from the bottom of the trough. An upstream edge portion and a downstream edge portion of each barb substantially merge with an upstanding wall of the conveyor trough. The feed surface is adapted for slidable passing of swarf-like material thereover as the material is moved forwardly in the conveyor. The slanted retaining surface is adapted for engaging and retaining a portion of the swarf-like material in place as the harpoon is retracted from a forward position to a rearward position during return stroke.

Abstract: A solar operated closed system power generator is provided in which a low boiling fluid is vaporized and superheated by the solar energy concentrated within a parabolic reflector upon an elongated boiler which extends along the focus of the reflector. Turbine means are connected to the boiler for obtaining power by the expansion of the superheated vapor and the expanded vapors are condensed in a condenser positioned in the shadow of the reflector. The condenser is cooled by cooling air which is moved through the condenser by means of a draft provided by the convection discharge of gases heated by the reflector, and pump means are provided for transferring the liquefied exhaust gases in the condenser to the boiler at the greater pressure prevailing therein.

Abstract: A laterally bent and longitudinally bendable extrusion product and method of making the same in which a composite metallized strip is encapsulated in a transparent sheath of molten thermoplastic and subsequently fed to a forming zone where it is laterally bent and cooled. The composite metallized strip includes a core of metallized particles sandwiched between and thermoplastically bonded to a transparent plastic substrate and a rigidifying support layer which is constructed and arranged to substantially prevent delamination, discolorization and deformation of the metallized particles.

Abstract: A metal strap segment adapted for forming a first loop about material to be tied and for forming a sealless strap connection between overlapping strap ends of the segment is provided with an integral smaller strap segment adapted for forming a second smaller loop and for forming a sealless strap connection between overlapping strap ends of the smaller segment when the smaller segment is severed from the larger segment. The severed ends of the remaining portion of the larger strap segment are also adapted for being reconnectable and forming a sealless strap connection therebetween.

Abstract: Pigmented thermosetting aqueous latex coating compositions adapted to deposit coatings which cure on baking to provide superior gloss are provided using an aqueous latex of hydroxyl-functional and mercaptan-terminated aqueous emulsion copolymer particles, the aqueous continuum of the latex having dissolved therein a carboxyl-functional resin salt. An aminoplast resin is dispersed in the aqueous latex to enable the thermosetting cure to take place.

Abstract: A novel door jamb having an isolated heat strip in which the surface to be contacted by the door is made of a re-enforced fiberglass material which has high impact resistance, superior chemical and corrosion resistance, will not easily scratch, and can be readily repaired. Secured to the fiberglass section of the door jamb is an isolated heat strip material requiring a low wattage, which functions to keep the door gasket pliable allowing it to seal tightly to the jamb and thus eliminate any chance of frost buildup on the jamb due to outside air leakage by the gasket.

Abstract: An apparatus and method are disclosed for providing a measured quantity of extrudate material to a receiving means. The extrudate material exits through an outlet, and a cutting surface is positioned adjacent to the outlet. The extrudate material is severed by a cutting means having a flexible and resilient blade for severing the extrudate material into metered charges. The cutting blade contacts the cutting surface during each revolution and bends from a rest condition to a backwardly bent flexed condition. After severing a metered charge, the cutting blade is released from the cutting surface and snaps forwardly to the rest condition to propel the metered charge toward the receiving means at a velocity greater than the average tangential velocity per revolution of the cutting blade.

Abstract: A strapping tool for tensioning and shearing strap has a tensioning wheel, a ratchet wheel means associated with the tensioning wheel, and a pawl adapted to engage the ratchet wheel means when the tensioning wheel is rotated in a direction opposite to the tensioning direction. When the pawl is engaged, the ratchet wheel drives a single stroke cut-off mechanism. A latch means is provided to place the pawl into engagement with the ratchet wheel. A pawl positioning means connects the latch means and the pawl, and releases the pawl from engagement with the ratchet wheel means as a cut-off stroke is executed. The strapping tool is further provided with a cutting block which has a chamfer along the cutting edge of the block so that the edge of the cut strap is bent downwardly upon being cut, and wear on the cutting edge is minimized as the strap is tensioned.

Abstract: A method is disclosed for forming, tensioning and sealing a strap loop about a package and then severing the sealed loop from the trailing length of strap. A length of strap is fed in one direction and the strap free end is guided or moved to form a small primary strap loop with the strap free end overlapping a portion of the loop. The strap free end is then restrained while the standing part of the loop is continued to be fed to expand the loop to a larger predetermined diameter. The expanded loop and/or package is then moved so that the package is encircled by the loop, after which the loop is tensioned tight about the package. A joint connection or seal is next made in the loop and the trailing length of strap is severed from the loop.

Abstract: A method is disclosed for tensioning of a formed strap loop about a package and joining of the overlapping portions of the loop in a manner that improves the residual tension of the loop. The strap loop, in the region of the overlap, is twisted so that the sides of the strap in that region are displaced from the package surface and so that one of the edges of that region remains adjacent the package surface whereby the tensioned loop can be joined by friction fusion, formation of interlocking slits, or application of an independent seal without having to insert an anvil or bearing member between the package and the loop and thus increasing the residual tension. After the strap is restrained in the region where the strap free end overlaps a portion of the formed strap loop to prevent relative movement between the free end and overlapped portion, the package is encircled by the loop so that the strap is twisted in the balance of the loop relative to the restrained region.

Abstract: An isothermal cryogenic freezer tunnel for supplying cryogenic gas to the food to be frozen at a temperature which is substantially uniform along a major portion of the length of the freezer tunnel. The freezer tunnel is equipped with an overhead duct having downwardly-directing flow apertures. A foraminous conveyor is located below the duct for accommodating the conveyorized passage of food through the tunnel. Spray nozzle means are mounted in the tunnel adjacent the inlet of the duct for ejecting cryogenic gas into the tunnel. The tunnel further includes fans positioned in vertical alignment with the flow apertures for propelling the gas through the duct onto the conveyorized food where the gas at a substantially constant temperature, blankets, impinges and freezes the food.

Abstract: The conveyor system includes a guide mechanism defining longitudinally disposed sliding surfaces for guiding rib means secured to the conveyor belt for controlling vertical movement of the runs of the conveyor and in addition defines a slot for restricting lateral movement of the conveyor. This design provides accurate control of the positions of the conveyor, which thus serves to limit the space that must be provided for conveyor systems, particularly of those types that are quite long.

Abstract: Monoethylenic monomers, including from about 1 to about 30% by weight of monoethylenic carboxylic acid, are placed in solution in a liquid mixture preferably containing a low molecular weight polyhydric alcohol and an anionic surfactant and this liquid mixture is dispersed in water containing a C.sub.3 -C.sub.4 alkanol and polymerized in the presence of an organic peroxide free radical polymerization catalyst at an elevated temperature, while agitating the dispersion. The dispersion of polymer particles is then at least partially neutralized, preferably with ammonia or an amine, to form an aqueous dispersion which is stable and which is useful in electrocoating.

Abstract: A textile treating composition adapted to provide a relatively permanent antistatic and dirt repellent finish and consisting essentially of an aqueous dispersion of:1. about 10% to about 20% of an antistatic agent comprising a compound of the formula ##STR1## in which R is an alkyl radical having 14 to 20 carbon atoms, R.sub.1 and R.sub.2 are, each independently, alkyl, hydroxy alkyl, alkyl substituted by carboxylic and/or sulphonic acid groups, aminoalkoxyalkyl or aminoalkyl wherein the amino group is unsubstituted or substituted by hydroxyalkyl, cyanoalkylaminoalkyl or by the group R--CO-- or --R--CO--NH-alkoxyalkyl wherein R is alkyl having 14 to 20 carbon atoms, or one of R.sub.1 and R.sub.2 is hydrogen;2. about 3% to about 35% of an aqueous dispersion of hard particles having a weight average particle diameter of less than about 2 microns;3. about 1% to about 6% of a fluorine-free inorganic or organic monobasic or polybasic acid;4. 0% to about 5% of an antimicrobic agent; and5.

Abstract: A rotary airlock for conveying material has a housing which includes a cylindrical wall and a pair of generally flat end walls which together define a cylindrical chamber. A plurality of vanes are secured to a shaft which extends axially through the housing. A plurality of blades are fixedly secured to each vane and are movable in all directions in the plane of the vane to enable the clearance between the blades and cylindrical wall and the end walls of the housing to be adjusted to maintain a seal between the blades and the housing and to minimize the leakage of air and material from the airlock.

Abstract: Acidic copolymers formed by copolymerizing monoethylenic monomers with a polyethylenically unsaturated polyether formed by reacting allyl glycidyl ether with a phenolic OH terminated intermediate produced by reacting a diepoxide with excess bisphenol have been found to be unusually adapted to anodic electrodeposition where substantially the same polyethylenically unsaturated polyether formed by direct etherification using allyl alcohol does not provide satisfactory results.

Abstract: A hydraulic control system for controlling the flow between a reservoir, a pump having pressure flow compensating means associated therewith and first and second flow control means for controlling flow to first and second fluid operated devices is disclosed herein. The hydraulic control system includes a priority flow control valve which maintains a priority of flow from the pump to the first flow control means based upon the amount of flow required as well as the pressure requirements. The priority flow control valve has a valve spool which is positioned as a function of a biasing spring, as well as the pressure of the fluid from the pump to the first flow control means and the pressure of the fluid in the first fluid operated device. The system is particularly adapted for functions requiring higher pressure than low stand-by system pressure and where one of those functions require priority over the other.