Abstract: A method and structure for selectively conducting pressurized gas flow over the upper surface of an airfoil, the airflow being selectively directable either rearward through a spanwise outlet to produce thrust and augment lift or, alternatively, directed forward to spoil the aerodynamic flow over the wing to diminish lift and provide a reverse-thrust braking. The structure includes a plenum defined in the airfoil and ducting to receive pressurized air or gas, the plenum being defined in part by a panel longitudinally pivoted at the central portion thereof to, preferably, change the area of a rearward directed opening while concurrently and proportionally changing in the opposite sense the area of a forward oriented opening to selectively direct the pressurized air or gas rearwardly, forwardly, or in combinations of openings while preferably maintaining a substantially constant opening area.

Abstract: A method and system for beam steering of a spatially fixed microwave antenna array. The phase of radiating elements and hence the beam position is established by the relative positions of a microwave disc or scan network having concentric microstrip paths thereon and a mechanically driven rotating directional coupler. The directional coupler is the single point feed for the antenna array.

Abstract: An article of manufacture and a method are disclosed herein for improving lubricity and wear resistance of a given substrate by applying thereto a solution consisting essentially of a dialkanolamine and a halogenated hydrocarbon carrier. The composition herein disclosed has been found to be most effective as preservatives for coating sundry substrates, especially gramophone or phonograph record surfaces whereby there is effected a marked reduction of record groove wear while substantially minimizing noise and harmonic distortion. The preferred composition herein contemplated and disclosed is one consisting essentially of a N-alkyl-substituted N,N-dialkanolamine and a halogenated hydrocarbon carrier, said dialkanolamine having the formula:(HOR.sub.1).sub.2 N--R.sub.2wherein R.sub.1 is alkylene selected from the group consisting of ethylene, isopropylene and propylene and R.sub.2 is alkyl having four to twenty carbon atoms.

Abstract: An article of manufacture and a method are disclosed herein for improving lubricity and wear resistance of a given substrate by applying thereto a composition consisting essentially of low-molecular weight tetrafluoroethylene telomers, an antistatic agent, preferably in the form of a tertiary amine, and a volatile organic solvent, and removing the volatile solvent to produce a thin, dry coating upon said substrate. The compositions herein disclosed have been found to be most effective as preservatives for coating gramophone or phonograph records which provide marked reduction of record groove wear while substantially minimizing noise and harmonic distortion.

Abstract: An article of manufacture and a method are disclosed herein for improving lubricity and wear resistance of a given substrate by applying thereto a solution consisting essentially of a dialkanolamine and a halogenated hydrocarbon carrier. The composition herein disclosed has been found to be most effective as preservatives for coating sundry substrates, especially gramophone or phonograph record surfaces whereby there is effected a marked reduction of record groove wear while substantially minimizing noise and harmonic distortion. The preferred composition herein contemplated and disclosed is one consisting essentially of a N-alkyl-substituted N,N-dialkanolamine and a halogenated hydrocarbon carrier, said dialkanolamine having the formula:(HOR.sub.1).sub.2 N--R.sub.2wherein R.sub.1 is alkylene selected from the group consisting of ethylene, isopropylene and propylene and R.sub.2 is alkyl having four to 20 carbon atoms.

Abstract: A radio frequency antenna structure is disclosed wherein a raised pedestal portion of the ground plane surface is provided and above which pedestal portion a microstrip radiator is disposed. The microstrip radiator is thus disposed on a pedestal at a predetermined distance above the base ground plane to produce mirror image or apparent radiating aperture(s) therebelow. The combined radiation pattern from the real radiating aperture(s) and the mirrored image(s) thereof produces an increase in radiation power at low pointing angles located near the ground plane, thus producing a wider radiation beam without sacrificing radiation efficiency. This form of raised pedestal microstrip radiator is especially useful in phased arrays where it is desired to steer the beam of the array to angles near the ground plane itself.

Abstract: Apparatus for providing extreme pitch trim configurations for aircraft capable of flying at low-speeds, and particularly aircraft having blown primary lift-producing surfaces. The apparatus includes a movable horizontal stabilizer to provide pitch trim and an elevator pivotally attached to the horizontal stabilizer to provide transient pitch control. Control of the elevator movement is provided by a control tube extending from a horn attached to the elevator to a bell crank member attached to the horizontal stabilizer. The bell crank is also connected to a push tube movably attached to the airframe and arranged to be aligned with the pivot axis of the horizontal stabilizer in the neutral position. Thus, the horizontal stabilizer may be pivoted around its mounting axis to provide substantial pitch trim while concurrently maintaining the range and symmetry of elevator movement.

Abstract: A composition and method of preparation are herein described for molten release and parting compositions adaptable for use in glass-forming operations. The novel composition comprises an aqueous dispersion of a mixture of a solid lubricant, a water-soluble silicate binder, a setting agent, and a water-soluble phosphate. A preferred composition comprises a mixture of flake graphite, boron nitride, sodium silicate, zinc oxide and potassium phosphate tribasic.

Abstract: A broadband antenna in the form of a multiple element interlaced dipole array is mounted on a thin elongated strip of dielectric material which is mechanically flexible, light weight and electrically small. Each dipole has a first tapered radiator section with an inductive loading section electrically connected to one end of the tapered radiator section. A capacitive end-loading section is connected to the inductive loading section. Second tapered radiator sections are joined to one another by a second inductive loading section. The inductive loading sections increase the effective electrical length of the first and second tapered radiators, respectively. A UHF gap filling conductor is connected to each of the dipoles to suppress grating lobes at the high-frequency end of the frequency spectrum received by the antenna.

Abstract: Leader strip for motion picture films is described which is composed of a substrate of cellulose acetate or polyester, a gum-removing layer comprising an organic binder selected from the group consisting of cellulose esters, polyurethanes, polyacrylonitrile, copolymers of acrylonitrile and vinylidene chloride, and epoxy resins, a gum-shearing agent of finely divided polymeric particles, said agent being bonded by the organic binder to the substrate, said gum-shearing agent being a member selected from the group consisting of polyesters, polyamides, polyimides and polyolefins, said polymeric particles having a size less than about five mils.

Abstract: Apparatus and method for inspecting the inside bottom surface of glassware for tramp glass by irradiating said surface with light having an angle of incidence of approximately 15 degrees and sensing any light transmitted through said surface as an indication of the presence of tramp glass.

Abstract: Method and apparatus for detecting defects in articles of manufacture wherein the article is inspected in at least two different planes. Decussate light paths are directed through the article and the light transmitted by the article is directed to a video camera to produce dual images which are scanned to sense defects in the article and produce a reject signal when a defect is present.

Abstract: A sightless indicating system and method is disclosed that is useful as an indicating device for diverse equipment, including equipment such as an electronic calculator, and is particularly useful by a blind person. When utilized as a part of an electronic calculator, a standard calculator keyboard is modified to include a sign key and an output key so that an operator can initiate output indications and determine the sign of such indications in addition to initiating the customary numerical and function inputs. The customary numerical and function inputs are processed in conventional manner except that the calculator output is converted to a sightless indicating form, such as audible signals indicative of output.

Abstract: A ware tester comprising a testing station and a conveyor for moving ware past the station, the station including a ware testing tool, and a drive for moving the tool toward and away from the conveyor to engage and disengage the ware and parallel to the conveyor while the tool is engaged with the ware. The drive includes first and second cranks spaced in the direction of conveyor movement and having first and second crank pins, respectively, with adjustable throws to determine the extent of tool travel in the conveyor direction. The tool is mounted on an orbital link for shifting movement toward and away from the conveyor, and the orbital link is supported by the first and second crank pins. The drive also includes a third crank having a third adjustable throw crank pin connected to the tool to drive the tool toward and away from the conveyor.

Abstract: A lehr loader or stacker for use with a conveyor for moving ware serially past the moving apron of a lehr, the loader comprising a frame adjacent the conveyor, and a pair of pusher bars on the frame alongside the conveyor and opposite the lehr apron. The bars are movable alternately transversely across the conveyor to sweep ranks of ware transversely from the conveyor onto the lehr apron for movement thereon through the lehr. The bars are mounted upon the frame for movement through the same general path, each bar being provided by a pair of longitudinally extending bar sections providing a longitudinal space therebetween. The mounting system for each bar includes arms supporting, respectively, the bar sections, one of the arms for each said bar being movable through the space between the bar sections of the other said bar as the bars move through the path.

Abstract: Method and composition for improving lubricity, abrasion resistance, and lowering the coefficient of friction of substrates such as photographic film, magnetic surfaces and other recording elements by applying to such substrates a solution comprising tetrafluoroethylene telomer and a copolymer of vinyl chloride and trifluorochloroethylene in a volatile solvent, drying and removing the excess, and substrates so lubricated.

Abstract: A lehr loader for use with a conveyor for moving ware serially past the moving apron of a lehr, the loader comprising a frame adapted to be adjacent the conveyor, and a pusher bar mounted on the frame to be alongside the conveyor and opposite the lehr apron, the bar being movable transversely across the conveyor to sweep ranks of ware transversely from the conveyor onto the lehr apron for movement thereon through the lehr. The improvement comprises the mechanism by which the bar is mounted for such movement and the drive mechanism for the bar, the mounting mechanism including a pair of arm structures supporting the bar at longitudinally spaced apart points along its length, a pair of carriages, and guides supporting each carriage for reciprocation in the direction of such sweeping movement of the bar. Each arm structure is mounted upon its carriage for movement upwardly and downwardly. The drive mechanism includes a mechanism for reciprocating the carriages and raising and lowering the arm structures thereon.

Abstract: A conformal microstrip antenna structure formed by a plurality of separated spaced-apart electrically conducting elements on a dielectric substrate overlying a ground plane. The innermost edges of the separated conducting elements define two sets of two intersecting radiators which are fed by microstrip transmission circuits disposed within the space between the separated conducting elements to individually feed the various radiators and/or segments thereof from the common feed point. The dimensions of the conducting elements also determine the resonant frequency of the radiators and their relative phases such that dual frequency operation as well as circular and/or elliptical polarization of the received/transmitted electromagnetic radiation can be conveniently achieved.

Abstract: A composition and method of preparation are herein described for molten release and parting compositions adaptable for use in glass-forming operations. The novel composition comprise a mixture containing tungsten disulfide, a silicate and a setting agent. A preferred composition comprises a mixture of tungsten disulfide and graphite with sodium silicate and zinc oxide as a setting agent.

Abstract: A dual slot antenna assembly is disclosed herein and generally includes a pair of concentrically positioned and radially spaced cylindrical conductors defining a pair of circumferential slots which are longitudinally spaced one-half wavelength apart at the anticipated operating frequency of the antenna device. An electrical signal feed assembly is connected with the conductors for exciting the slots so as to provide overlapping radiation patterns emanating in the same direction.