Abstract: A barrier for water carried pollutants consists of a series of end to end connected boom sections with each boom section including a tubular sleeve portion containing flotation means and a depending skirt. The entire series of boom sections are connected to one or a pair of flexible draft members which are connected to the booms at spaced points by connector assemblies comprising this invention.

Abstract: An impingement or rebound separator for removing mist from a flow of gas consists of a first series of spaced eliminator blades each having at least one of its ends connected to an end plate with the transverse axis of each blade sloping at an angle of about 20.degree. to about 30.degree. to the direction of flow of gas and a second series of spaced eliminator blades each having at least one of its ends connected to an end plate and with the transverse axis of each blade sloping at an angle of about 20.degree. to about 30.degree. to the direction of flow of gas but pitched in the opposite direction to the pitch of the first series of blades. The first and second series of blades defining a separator unit having a plurality of zig-zag or chevron shaped gas flow channels with the longitudinal axes of the blades tilted at an angle of about 30.degree. to about 45.degree.

Abstract: Rotary wing aircrafts include one or more rotors having a plurality of rotary blades. Each of the rotor blades has crack sensor in the form of an induction coil or conductive wire. The crack sensor is connected with a further induction coil to form a circuit of which inductance is changed when a crack is produced in the associated rotor blade. On a stationary part such as a stationary swash plate of the rotorcraft, there is provided a stationary induction coil which is brought into cyclical and electromagnetical co-operation with the further induction coil on the rotor as the rotor rotates. The stationary induction coil is connected with a load resistor and an oscillator in such a way that cracks in the rotor blades can be detected in the form of a voltage change at the load resistor.

Abstract: A system is provided for controlling the porosity of a web or film issuing from an electric spark perforating apparatus in accordance with an operator-set reference porosity regardless of variations in web speed, inherent web porosity, spark discharge energy and spark repetition frequency by controlling the frequencies of the electrical sparks applied to the web in accordance with the product of two signals, one a difference signal obtained by comparing the porosity of the web leaving the perforator and the reference porosity and the other signal derived from the speed of the web.

Abstract: A curing module is provided of generally rectangular solid configuration of which the bottom is imperforate and includes runners to facilitate lifting by fork lift; the top is imperforate with means for minimizing air leakage between the tobacco and top inner surface; the rear wall is imperforate with horizontal ledges to support the ends of tines which penetrate the tobacco; the front is generally imperforate, but opens to facilitate loading and when closed enables insertion of sharp rods which penetrate the tobacco and provide vertical support; and two opposed perforate side walls which permit horizontal cross-flow of the curing gas. One wall of which may be hinged to permit mechanized unloading of the cured leaf. Also provided is a simplified curing structure to receive the modules which are stacked by conventional fork lift equipment and to direct curing air horizontally through the perforate sides of the modules at controlled temperature, himidity and velocity.

Abstract: An air cooled dry-type cooling tower having two sets of dry type heat exchange assemblies with the first set mounted in a vertically extending array on a circle concentric to the wall of the tower housing and the second set mounted generally horizontal and extending from the first set to the wall of the tower housing.

Abstract: A collapsible tube squeezing device comprises a pair of matching jaws pivotally connected at one end with matching handles at the other end, and a resilient spring for retaining the jaws in a closed position. A collapsible tube zone defined by contact faces of the jaws which are provided with a roughened surface to frictionally engage a collapsible tube. The pivotal end of one of the jaws is bevelled to permit opening and closing of the tube squeezer device and for gripping the crimped end of a collapsible tube to retain it between the jaws.

Abstract: A prosthetic heart valve wherein the occluder member is of high camber air-foil-like configuration which assists in creating vortices in the blood flow pattern into the ventricular cavity. The formed vortices aid in cleansing the cavity and in closing the valve during contraction of the cavity.

Abstract: A method for constructing a thin-shell concrete structure of round design comprising, pouring on soil of the main floor, applying reinforced concrete against a dome shaped liner of insulating material, and raising the resulting structure so as to allow a lower floor to be constructed.

Abstract: A compound for separating organic liquids, particularly hydrocarbons from an organic liquid-water system including a loose mass of expanded perlite mixed with clays and a fibrous filler formed by demoisturizing an aqueous suspension of the compound and comminuting the demoisturized mixture.The compound is introduced into, or contacted by, the organic liquid-water system to selectively absorb the hydrocarbon whereupon the compound and the hydrocarbon absorbed therein are mechanically separated from the system.

Abstract: Herein disclosed is a manual floor sweeper including a casing, a pair of front and a pair of rear wheels and a pair of roll brush brooms juxtaposed longitudinally in parallel with each other in a manner to rotate inwardly in response to the rotation of the wheels so as to sweep up the dust on the floor into the hollow space of the casing. Two substantially enclosed housings are juxtaposed to each other at the both sides of the casing. Each of two gear trains is accommodated in each of the housings and includes a pair of drive gears, a pair of brush actuating gears, and a pair of coactive gears.

Abstract: A twist drill sharpener employing a rotary grinding wheel has a twist drill chuck which mounts a pair of cams which are locked to the chuck when the lips of the twist drill are aligned in an aligning fixture and then the chuck, cams and drill are inserted in a second fixture provided with a pair of cam followers which in conjunction with the chuck carried cams control the grinding of the twist drill.

Abstract: A barrier for water carried pollutants comprises a series of end to end connectable boom sections containing a floatable material which may comprise an oleophilic-hydrophobic-lighter than water composition which will selectively absorb hydrocarbons; fluid impervious connectors for the ends of the boom sections and flexible draft members and associated connectors for maintaining the integrity of the boom if it becomes necessary to replace one or more of the boom sections.

Abstract: An improved Stirling cycle type engine is provided wherein the working fluid is a condensible fluid such as steam and a portion of the steam is condensed prior to the introduction of the steam into the cold cylinder zone. Before and/or during compression of the steam in the cold cylinder zone, water is injected in an amount equal to, greater than or less than the amount condensed.

Abstract: An anti-splash, non-contaminating scrub sink is provided wherein a zone in the bottom of the sink including the drain is perforate and a reduced pressure is maintained below the perforate zone to draw the scrub fluid from the sink. In one embodiment the perforate zone includes the entire bottom and a portion of the side walls of a liner for the sink.

Abstract: Antibacterial phosphorothioamides are prepared by the reaction of phosphorothiocyanates with hydrazine or hydrazides.

Abstract: Steam or other condensable vapor heated to a maximum temperature at a maximum pressure permitted by the system is expanded to a lower pressure in a positive displacement expander; the partially expanded fluid is then further expanded in a turbine, a portion of the fluid in the turbine is withdrawn and directed to a positive displacement compressor and compressed to the maximum operating pressure while introducing the condensate of the remaining portion of the fluid into the compressor. The compressed fluid is then reheated to maximum temperature and the cycle repeats.

Abstract: Plush fabrics are produced on a conventional double jersey knitting machine by feeding a plush yarn to conventional cylinder and dial latch needles and feeding a ground yarn to the dial needles only, whereby long loops are formed in the plush yarn and short loops in the ground yarn; and thereafter causing the cylinder needles to execute a knitting movement without feeding yarn thereto, whereby the long loops are released from the cylinder needles to form the plush pile and cylinder needles are freed for a repetition of the knitting cycle. Some of the conventional feeders on the basic machine are replaced by auxiliary feeders designed to feed yarn to the dial needles only, others may be simply omitted in order to provide for the release of formed loops from the cylinder needles, while others are replaced by ancillary devices to clear released loops from the knitting zone and to open the latches of the cylinder needles for a fresh knitting cycle.

Abstract: Apparatus and method of making felt or felted yarns includes passing a wet wool-containing sliver or yarn through a flexible hollow tube while flexing the tube preferably in a traveling wave motion.

Abstract: Zinc alloys having improved physical properties consist essentially of 10 to 30 percent by weight of aluminum, 0.3 to 10 percent by weight of copper, 0.01 to 0.1 percent by weight of magnesium, 0.005 to 0.3 percent by weight of at least one of the metals calcium, .[.lithium.]. and sodium, and the balance zinc.