Abstract: A device permitting the rapid and direct determination of red cell percentages in centrifuged blood samples comprised of a scale optically variable in length in combination with an adjustable holder for the blood containing capillary tube.

Abstract: A top-to-bottom mixer suitable for extending through a small opening in a closed top drum for mixing liquid. The mixer has a tube for extending axially downward into the drum. Since closed top drums in commerce have a maximum top opening of 2" pipe size, this mixer is additionally unique in that it will insert into this small opening.The tube has a circumferentially located opening adjacent the lower end and a shaft extending concentrically into the tube, connected to a turbine at the bottom of the tube or other means for causing downflow. Four spaced inlet openings at the top are provided in the tube adjacent the upper end.

Abstract: A ball joint comprises a circular cylindrical housing with at least one opening, a bearing member contained in the housing, a ball stud with its ball head pivotally supported by the bearing member, and a closing plate press-fitted in the opening so as to close the opening and to generate the contact pressure between the bearing member and the ball head.

Abstract: A device for rigidly interconnecting wood panels or other parts of a piece of furniture. The joint comprises a finned shank and a head, secured within a seat provided in a first panel, and the head being removably engageable with a pin projecting from a second panel to be connected to the former.The joint head comprises a seat coaxial with the shank, and open at the front and top for introducing the pin from above; on the bottom and at intermediate position, the seat in the joint head also has a transverse rib for engagement with a slot at the pin end. A closure cover clamps the pin in the seat and has projecting tabs for rotational engagement within longitudinal slots provided internally of the head at the top of the rib.

Abstract: A thermoplastic corrugated drainage tube comprising annular peaks and valleys and a plurality of drainage openings internally cut about the circumference of each valley, the openings in each valley aligned with the openings in successive valleys along helical lines described by said openings. The method of forming the drainage openings comprises placing a cutting tool in the interior of the tubing and rotating the tool while moving the tubing axially past the tool. The cutting tool comprises a body having a plurality of radially projecting cutters spaced equidistantly about the cutter body and means for rotating the tool.

Abstract: In order to increase the vertical load bearing capacity of an ice field such as may be found in the Arctic, whereby buildings, drilling rigs, or the like may be supported, an inflatable hull is positioned beneath the ice, initially in deflated form. Inflation of the hull is carried out in conjunction with application of the load under control of level sensor means which govern the rate of inflation according to the deflection of the ice as the load is applied. Very high load bearing capacity may be obtained and maintained, even for relatively thin ice, within a short period. Degree of inflation control apparatus may be employed to accomodate varying loads, and a multiple-hull system is contemplated for practicing the invention over relatively large areas.

Abstract: A method for forming a continuous footing for a large building to be built on a concrete pile foundation using pre-fabricated footing blocks is disclosed. A novel leveling element which comprises a base plate having an aperture for receiving the top of a pile remaining above the ground level and side walls having indentations for receiving at least one pre-fabricated footing block is used, whereby a continuous footing can be formed with pre-fabricated footing blocks on the piles the tops of which remain above the ground level with uneven heights.

Abstract: A drilling machine comprising an article holding device and two drilling devices, being characterized that each drilling device has one drill turning in the same direction at a synchronized speed, each drill approaching to or separating from each other symmetrically to make a hole from both sides of a rigid and fragile article made of glass or ceramic e.g. lenses of spectacles at the same time, and that the hole is chamfered and further a groove for fixing the article to the frame is made on the article, as required.

Abstract: A multiple spindle drilling machine comprising a drilling device attached to a movable attachment stand to drill a web of a wide flange beam, the drilling device including a plurality of drills aligned in the lateral direction of the web, and a shifting device for swinging and shifting the movable attachment stand from a point on a line rectangularly intersecting a flange of the wide flange beam to the point on a line obliquely intersecting the flange of the wide flange beam with one end of the movable attachment stand being as the center.

Abstract: A toolholder for recessing operations having at least one recessing tool having a cutting body of hard metal, the recessing tool being arranged in a cylindrical receiving bore in the toolholder and being held by a retaining screw arranged in the toolholder perpendicularly to the receiving bore. A tool support is arranged in the receiving bore and has a semi-cylindrical shank. The flat surface on the semi-cylindrical shank has at least one groove extending parallel to its axis for receiving an exchangeable cutting body slidably mounted in the groove. A clamping jaw for each cutting body is provided in the other remaining half of the receiving bore and, under the action of the remaining screw, is supported at its front, outer end on the top of the cutting body and by its rear end on the supporting surface of the tool support. The clamping jaw has at its front end a shoulder supporting the cutting body in the direction of sliding and is provided with a setscrew extending parallel to the groove.

Abstract: Suspension members flexibly connected to a carriage and to an overhead support above the racking platform of an oil well mast or derrick support the carriage, which is provided with a floor to support a derrick man therein. The lower end of the suspension means can be swung back and forth parallel to the side of the mast or derrick and also at right angles to it to thereby move the carriage in the same directions, the carriage being provided with a lateral seat for receiving the upper end portion of a pipe and moving it with the carriage into another position.

Abstract: Erection means for a transport trailer which hauls an elongated object of relatively large cross-section in horizontal position and then with the aid of hydraulic jacks stands the object erectly on a preformed foundation.

Abstract: A tractor has a main frame with a fore and aft body portion and a transverse rear axle housing, and includes a pair of hydraulic outlets. A transverse upright U-shaped member depends from the body portion of the tractor and has a central fore and aft socket, and a pair of rearwardly open V-shaped latch elements are connected to the tractor axle housing. A separate backhoe has a forwardly extending frame portion having a probe at its forward end that is insertible into the socket and has a pair of transverse pins extending outwardly from opposite sides of the frame for engagement with the V-shaped latch elements. The backhoe is mounted on the tractor by backing the tractor toward the backhoe with the tractor wheels straddling the fore and aft backhoe frame portion.

Abstract: A loader vehicle includes a loading implement movable to a dump and a rack-back position by means of actuation of cylinders. The movement of the cylinders is provided by fluid control valves in turn operated by means which provide for both a slow dump and a fast dump movement of the implement, with fast dump movement initially selected being automatically changed to slow dump movement dependent on the position of the implement.

Abstract: A variable area turbine vane, for use in high temperature aircraft gas turbines, having a load carrying spar with a heat shield member surrounding the load carrying member. The heat shield member is positioned in grooves which permit spanwise and cordwise expansion of the heat shield member. Cooling air enters the hollow load bearing member and passes through holes in the load bearing member and heat shield member.

Abstract: The rotor blades or wings of the present helicopter rotor structure are interconnected by tension or carrier bars so that diametrically opposite rotor blades or wings form a pair. The tension bars are substantially stiff against bending, but permit some bending. The blade angle bearings are movable in the blade flapping direction, as well as in the blade lead-lag direction. At least one blade angle bearing of a pair of such bearings permits an axial movement of the respective tension or carrier bar, whereby the latter is able to take up bending loads.

Abstract: Several forms of surface impeller for aeration of liquids are disclosed. All of the forms are of the shrouded or closed turbine type. In one form, the impeller has a large-diameter flat steel horizontal upper disc adapted to be secured to the lower end of a vertically disposed rotatable drive shaft. Secured, as by welding, to the undersurface of the upper disc are a plurality, such as six or eight or other number, of vertical blades at uniform spacing. Each blade is curved in a retreating or backward direction relative to the direction of rotation of the impeller. Each blade has a long or deep vertical inner edge located forward of the center axis of rotation. The lower edge of each blade is inclined upwardly toward a relatively short or shallow vertical outer edge located near the outer periphery of the upper disc. The horizontal innermost portion of the otherwise inclined bottom edge of each blade is welded to a small lower tie plate.

Abstract: A hydraulic pump assembly having a motor actuated by a source of fluid under pressure and in turn actuating a fluid pump under the control of a valve responsive to operation of the motor. The diameter of a piston of the pump is smaller than the corresponding diameter of a piston of the motor in order to permit the pump to obtain higher output pressures than are required to actuate the motor. The valve includes a valve element connected directly to the piston of the motor and slidably disposed in a pair of axially spaced, cylindrical housing parts so as to sequentially place ports provided in spaced ends of the valve element in communication with passages provided in the cylindrical housing parts.

Abstract: An apparatus for producing power from water waves. The apparatus comprises a main pipe having at least one inlet and an outlet. A pump has an inlet to admit ambient water and an outlet that communicates with the inlet of the pipe. A valve controls the inlet to the pump. Another valve controls the outlet to the pump. A buoyancy vessel is attached to the pump. The buoyancy vessel has a slightly positive buoyancy to follow the motion of the waves. Reciprocation of the buoyancy vessel permits water to enter the pump, through the inlet, and then forces water from the outlet into the pipe.

Abstract: A fuel pump plunger in an injection pump is formed with a shallow groove circumscribed about the periphery between the scroll edge and the pumping end to level off pressure peaks in the injected fuel and to retard timing during deceleration of an engine due to an imposed load.

Abstract: In a vane type rotary fluid pump or compressor, a plurality of vanes are slidably fitted in the body of a rotor at an angle with a radial plane passing through the axial center line of the rotor to move radially outwardly from the rotor in a direction opposite to the direction of rotation of the rotor. Each tip of the vanes is provided with a flat surface frictionally guided by a cylindrical inner wall of a stator housing and a taper surface extending from the front end of the flat surface toward the direction of rotation of the rotor. The flat surface of the vane has a predetermined width sealingly in contact with the inner wall of the stator housing.

Abstract: A conveying device for conveying liquid from a supply well features an upright wall having one major surface and extending into the well, conveying means comprising a disk rotatably mounted about a substantially horizontal axis and a plurality of separations connected to the disk about the axis, the wall abutting the separations, a portion of the surface of the wall, the separations and the disk defining cells for conveying the liquid along at least part of the wall surface, and an output channel defined in the wall and intercommunicating with at least one of the cells when in a position near the top of the disk for emptying liquid from the cells as they reach the position;Whereby, when the disk is rotated, it will move the separations into the liquid and the cells will substantially retain their liquid contents until they reach the position.

Abstract: Method and apparatus for producing small hollow spheres of glass, metal or plastic, wherein the sphere material is mixed with or contains as part of the composition a blowing agent which decomposes at high temperature (T.gtoreq.600.degree. C.). As the temperature is quickly raised, the blowing agent decomposes and the resulting gas expands from within, thus forming a hollow sphere of controllable thickness. The thus produced hollow spheres (20 to 10.sup.3 .mu.m) have a variety of application, and are particularly useful in the fabrication of targets for laser implosion such as neutron sources, laser fusion physics studies, and laser initiated fusion power plants.

Abstract: An apparatus useful in manufacturing a continuously extruded running length of construction paneling from continuous flow material sources. The material distribution system, operating in concert with intermittent advance motions of a material conveyor, provides even layer material distribution from the continuous flow sources.

Abstract: A snowball maker has opposed inner and outer cup-like shells which interfit to compact snow into a ball. The inner shell deforms, within outer shell, upon full insertion substantially to encircle the snow within the two shells. Upon separating the shells, the inner shell resiliently opens to its original shape for ready release of the compacted ball of snow.

Abstract: A die for extruding a honeycomb structural body capable of preventing the deformation of the honeycomb structural body when the honeycomb structural body is extruded.

Abstract: An extrusion tool consisting of a stack of thin metal wafers in which apertures have been machined by chemical etching. Each wafer has one or several apertures. For simple profiles the wafers are identical. The apertures in adjacent wafers are angularly offset one with respect of the other for helical extrusion.

Abstract: An improved process is provided for the transfer printing of textile materials. In the process of this invention a heat sublimable dyestuff is printed onto a carrier sheet. The carrier sheet is then brought in contact with the textile material to be printed. Sufficient heat and pressure is applied for a suitable dwell time causing sublimation of at least a substantial portion of the dyestuff from the carrier sheet. The volatilized dyestuff is then transferred and deposited on the surface of the textile material to be printed. The carrier sheet is then separated from the textile material. The printed surface of the textile material is then heated to at least the sublimation temperature of the dyestuff in substantial absence of a convective gas flow, other than the volatilized dyestuff and maintained at this temperature until a given desired degree of resublimation and deposition of the dyestuff from the surface of the textile material to the interior of the textile material is obtained.

Abstract: The invention concerns the use, in discrete sample analysis apparatus, of vibratory conveyor to convey samples, and there is provided an automated discrete analysis system in which the means for conveying samples through the system comprises vibratory conveyor. A particular example described in detail is that of an automated radioimmunoassay system which in preferred form consists of a series of linked spiral vibratory conveyor modules.

Abstract: Suspensions of pulverized coal in fuel oil can be stabilized by treating fuel oil with an oil soluble polyamine containing at least two amino groups (or a polyamine which is rendered oil soluble upon reaction with suitable acid), then adding with agitation the desired amount of pulverized coal to the treated fuel oil and finally stabilizing the mixture by adding an oil soluble polycarboxylic acid containing at least two carboxyl groups in an amount sufficient to stabilize the coal-fuel oil mixture.Suitable amines may be selected from the group consisting of N-alkyl 1,3 diamino propanes and higher N-alkyl amines having more than two amino groups.Suitable acids may be selected from the group consisting of polymerized fatty acids and alkenyl polycarboxylic acids.

Abstract: This invention relates to copolymers of alpha-olefins and maleic anhydride reacted with amines in the presence of Lewis acids, preferably BF.sub.3 or a complex thereof; and to the use of these products as anti-static agents in organic liquids, preferably in hydrocarbons. The use of Lewis acid produces a unique reaction product which is superior as to fluidity and/or anti-static properties as compared to the corresponding product produced without Lewis acid. In addition, the use of Lewis acid promotes the rate of reaction thus reducing reaction time.

Abstract: This invention relates to the hydrogenation of tetrahydropyrimidines to yield linear N-substituted diamines which can be reacted with carbonyls to form imines, which imines can be reduced to N,N'-substituted diamines as illustrated by N,N'-substituted 2,4-diamino-2-substituted pentanes. The products of this invention are useful as fuel additives.

Abstract: A process for making cloth backing for coated abrasive articles is disclosed wherein a backing material is coated on its front side, with a liquid thermosetting resin, in such a manner that the resin does not permeate the interstices of the cloth. As a result, the cloth retains most of its original pliability when incorporated in the finished coated abrasive article. A back sizing, of for example glue, may also be applied in the same manner to provide a coated abrasive backing material which is both front sized and back sized but which still possesses most of its original pliability.

Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. An ammonia off-gas, substantially free of carbon dioxide and water, is obtained from the ammonia separation zone, and the residual liquid phase is introduced into the carbon dioxide separation zone. Diluting water is also added to the carbon dioxide separation zone in an amount of from about 0.

Abstract: A method and system for collecting fine particles from a gas stream is disclosed. A shallow dense mobile bed of solid collector granules is moved over a plate containing a plurality of perforations; and a gas stream containing fine particles is moved upward through the perforations to form high velocity gas jets moving upward through the granule bed for causing the collector granules to collect the fine particles from the gas stream by inertial impaction and interception. The bed is only deep enough in relation to the velocity of the gas jets to prevent the gas jets from penetrating the bed without the fine particles therein being collected by the granules. The granule bed is not more than approximately one inch deep. Preferably the granules are moved over a plurality of perforated plates that are positioned in tandem vertically, and the gas stream is moved successively through the perforations in the plurality of plates and thereby through the granules that are moving across the plurality of plates.

Abstract: A portable electronic precipitator includes a two-stage type electrostatic percipitator mechanism mounted in a portable cabinet such as a wheel-mounted cabinet. The two stage type electrostatic percipitator is mounted in a vertical position with the inlet for the precipitator, containing the ionizer unit at the lower end of the precipitator with the collecting cell being mounted above the ionizer unit. A suitable fan is contained within the cabinet to pull air through the ionizer unit and then through the collector cell. The electrostatic precipitator mechanism is mounted above a particle fallout chamber. A freestanding arm, which is moveable in any desired direction is also mounted on the cabinet with a flexible hose surrounding and supported by the adjustable freestanding arm.

Abstract: A bin for pneumatically collecting paper chips comprises a chamber for receiving a stream of air containing paper chips and for collecting the paper chips. The chamber has inlet and exit ports so positioned as to cause a downward current of air to thereby compact the paper chips collected therein and means in the interior of the chamber for separating substantially all of the paper chips from the air stream and for collecting the separated paper chips in a lower portion of the chamber. The bin may also include means for opening a portion of the chamber to allow the collected chips to be removed from the chamber.

Abstract: In a method for the refrigerative fractionation of cracking gases in ethylene production plants, the improvement consisting in that ethane is used as the refrigeration fluid, it being thus possible to attain very low temperatures, down to minus 88.degree. C.: concurrently, the condensation with water is practicable whenever water is available in large masses at a temperature which is in the range from zero centigrade to +25.degree. C.; that is the case of sea waters in cold countries or fresh waters in cold climate. A considerable first-cost and running economy become thus available.

Abstract: Method and apparatus for forming discrete segments of fibrous glass comprises supplying a plurality of streams of molten glass; attenuating the streams into filaments and cutting the continuous filaments into discrete segments by a forming means; positioning a delivery means having a first collection zone and a second collection zone spaced from the first zone to receive said discrete segments; controlling said forming means to operate at a first speed or a second speed slower than the first speed; directing the discrete segments to said first zone when said forming means is operated at said first speed and to said second zone when said forming means is operated at said second speed.

Abstract: A process is disclosed for making an optical fiber having a graded index glass core enveloped by a cladding material. The ingredients from which the peripheral part of the core glass is to be formed are placed in a closed tube of the cladding material which is more refractory than the core glass. The ingredients are melted to form a glassy liquid which is fined within the tube and then coated (for example, by rotational casting) on the inner surface of the tube. Additional ingredients, from which the inner part of the core glass is to be formed, are then placed in the coated tube, melted and similarly coated on the inner surface of the tube. In this way successive core glass layers, each having a different index of refraction, may be formed within the tube of cladding material. The temperature is then elevated further and the tube and glassy liquid drawn into a fiber.

Abstract: A method is described for making molds for the casting of resin ophthalmic lenses having segments of prismatic optical effect. A first mold surface is formed in a first blank. A second blank, having a recess therein shaped to the outline of the desired lens segment, is adhered to the first blank's mold surface. A second mold surface is then formed in the blank resulting from the connection of the first and second blanks. The first and second mold surfaces are each portions of surfaces of revolution having first and second axes of symmetry, respectively. The second surface has an effective center of curvature on the second axis. The second surface is so formed in the resulting blank that the first and second axes, if they intersect, do so at a location on the second axis other than at substantially the center of curvature of the second surface.

Abstract: A method for manufacturing a lead-through of a metal element consisting of a fernico alloy through a component of ceramic material. A suspension is supplied of glass powder having molar percentage compositions within defined limits. The suspension is deposited on the ceramic material at the area of the lead-through and the assembly is heated for several minutes in an nitrogen atmosphere at a temperature near 1000.degree. C. followed by cooling of the assembly to room temperature.

Abstract: A soil conditioning composition of extended useful life in soil comprises a substantially linear, substantially water-soluble hydrophilic polymer having a molecular weight greater than 50,000 and at least one functional group disposed along the polymer chain. The polymer chain comprises one or more polymer chain segments characterized by an absence of the functional group therein and a minimum length, the minimum length of the polymer chain segment being at least one micrometer when the polymer chain segment is secured to one of the functional groups only at one end thereof and at least two micrometers when the polymer chain segment is secured to a respective one of the functional groups at each end thereof. The functional group is more capable of attaching the polymer to a solid soil phase than is the polymer chain segment, whereby the polymer includes at least one portion adapted to secure the polymer to a solid soil phase and at least one portion adapted to extend into an aqueous soil phase.

Abstract: 1,2,3-Thiadiazole-5-yl-urea derivatives of the formula ##STR1## in which R.sub.1 is hydrogen or alkyl of 1 to 5 carbon atoms, R.sub.2 is hydrogen or alkyl from 1 to 5 carbon atoms which latter may also have at least one oxygen or sulfur atom interposed in the carbon chain and wherein R.sub.3 is a heterocyclic hydrocarbon residue in which at least one nitrogen atom is present in the ring, which residue may also be substituted by the same or different substituents comprising alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen, nitro or trifluoromethyl. The compounds are effective as agents for growth retardation and defoliation of plants.The invention also comprises a process of making the product and compositions in which the products are the, or one of the, effective agents.

Abstract: N-Substituted perfluoroalkanesulfonamides of the formula: ##STR1## WHEREIN R.sub.f is a perfluoroalkyl group containing one to four carbon atoms, each Y is a non-cyclic group which can contain only carbon, hydrogen, oxygen, sulfur, nitrogen and halogen and m is 1-5, provided that all of the Y groups together contain not more than about twenty carbon atoms and that at least one of the Y groups contains a heteroatom selected from oxygen, sulfur, nitrogen and halogen. Also included are salts of these compounds, compositions containing the compounds of the present invention and processes for their preparation and use. The compounds are active as herbicides and plant growth modifiers.

Abstract: Bis-substituted succinamides having the formula ##STR1## in which X is chlorine or bromine; R.sub.1 and R.sub.3 are each hydrogen,, alkyl, haloalkyl, alkenyl, alkynyl, or benzyl; R.sub.2 and R.sub.4 are each hydrogen, alkyl, alkenyl, haloalkenyl, alkoxyalkyl, alkynyl, cycloalkyl, cyclopropylmethyl, furfuryl, and tetrahydrofurfuryl; R.sub.1 and R.sub.2 taken together along with the nitrogen from a non-aromatic heterocyclic ring; R.sub.3 and R.sub.4 taken together along with the nitrogen form a non-aromatic heterocyclic ring; provided that when R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each alkyl, then one of R.sub.1 or R.sub.2 and one of R.sub.3 or R.sub.4 is other than methyl; further provided that only one of R.sub.1 or R.sub.2 is hydrogen and only one of R.sub.3 or R.sub.4 is hydrogen. Compounds of this invention are useful as herbicides and includes those compounds in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each methyl.

Abstract: Trifluoromethylphenoxy phenoxy crotonic acid derivatives of the formula ##STR1## wherein X represents hydrogen or halogen atom, and R represents an alkyl, haloalkyl, alkenyl haloalkenyl or alkynyl group are disclosed. These compounds disclose herbicidal activity.

Abstract: Mixtures of 1-(3,4-dichlorophenyl)-3-methoxy-3-methylurea with 2-chloro-N-isopropylacetanilide or 2-chloro-2',6'-diethyl-N-(methoxymethyl)acetanilide exhibit surprisingly high solubility in suitable solvents. This solution synergism is believed to be the result of molecular complexing of 1-(3,4-dichlorophenyl)-3-methoxy-3-methylurea with 2-chloro-N-isopropylacetanilide or with 2-chloro-2',6'-diethyl-N-(methoxymethyl)acetanilide.

Abstract: A process for refining iron melts by blowing oxygen onto the surface of the iron melt, the quantity or concentration of the stream of oxygen being kept constant for most of the blowing time and being reduced in one or more stages towards the end of the blowing time without any significant increase in the total blowing time.

Abstract: Process for the practically total precipitation of precious metals from solutions which contain them, according to which said solutions are treated with carbon monoxide in the presence of a quantity of water or a primary or secondary alcohol at least equal in weight to the total quantity of precious metal present.