Abstract: Apparatus for examining documents moved along a path between a light source normally energized at a first level and a photodetector, in which a first potential proportional to the long term average value of the photodetector output with no document between the light source and the photodetector and a second potential proportional to the instantaneous value of the photodetector output are compared to energize the light source at a higher level by shorting part of the resistance in the normal energizing circuit when the second potential falls below a predetermined percentage of the first potential.

Abstract: A simplified currency dispenser especially adapted for use at high volume low dollar amount transaction locations. The dispenser is adapted alternatively to transport a selected mix of currency notes from first and second supplies to a delivery location and to display the dollar value of the delivered notes or to transport notes from only one of the supplies to the delivery location and to display the number of notes transported. The dispenser includes a first key pad and display on the dispenser housing for use during a counting operation and a remote key pad and display for use during a dispenser operation. The housing is made in upper and lower sections for ease of manufacture and servicing. It is adapted for either countertop installation or below the counter installation.

Abstract: The grafting reaction according to the invention occurs after having impregnated the polymeric material, on which were previously created free radicals by activation within an emulsion containing the fluorinated monomer and a graftable derivative of the morpholine. The preferred reagents are morpholinoethyl methacrylate and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl methacrylate. The invention is applicable to the waterproofing of textile articles, particularly made of cotton, silk, linen. The material thus grafted is waterproof when cold, but when hot, it may be washed, dyed or printed by transfer.

Abstract: The brushing machine according to the invention comprises controlled brushing rollers of the counter-pile type as well as rollers of the teazle type, of small dimensions with respect to the width of the fabric to be brushed, mounted to rotate freely about their axis and covered with a card clothing whose teeth are directed parallel to the axis of rotation. The teazles are mounted side by side to form a line. The lines of teazles are mounted alternately with counter-pile workers on conventional raising machines or with counter-pile mini-T rollers on raising machines in which each worker is an assembly of small so-called mini-T rollers. The teazles and possibly the mini-T rollers are equipped at their ends with a protection means covering the zones of beginning and of end of clothing, for example a cap fast with the axis of rotation of the roller.

Abstract: Apparatus for applying a thin coating to a web in which the outer end of a die assembly is moved into interfering relationship with the outer elastomeric position of a backing roll so that coating material supplied to said die assembly pocket of coating material covering a discharge orifice in the outer end of the die assembly.

Abstract: An improved compact bill acceptor having a frame provided with transport means for carrying a bill inserted therein along a path from an inlet to the space between a ram and the front opening of a bill box carried by the frame and a compound slide connected between the frame and the ram for reciprocating the ram to drive a positioned bill into the bill box. Preferably the bill box has open sides closed by side panels pivotally mounted on the frame to permit the box to be unloaded through one of the sides.

Abstract: A dual-visor assembly in which the inner and outer visors are capable of selective left-handed or right-handed actuation to suit a particular operator or operating condition. The inner-visor actuator comprises a lever arm that extends laterally beyond a side edge of the visor through one of a first pair of slots formed in the visor housing. A pin carrried by the arm is resiliently biased into engagement with a detented surface to lock the inner visor in a desired position. Preformed apertures on the left and right sides of the visor permit the actuator lever to be selectively secured to the desired side. The outer-visor actuator comprises a knob carried by a key that fits into either of a pair of keyholes formed on opposite sides of the outer visor. The knob extends through one of a second pair of slots formed in the visor housing at locations opposite the keyholes and is turned to clamp the visor housing to lock the outer visor at the desired position.

Abstract: A one-piece chinstrap-napestrip assembly for a helmet in which a pair of napestraps secured to the nap portion of the helmet interior at laterally spaced locations extend around the lower periphery of the helmet, crossing each other, and pass outwardly through slots formed in the front of the helmet to receive the ends of an adjustable chinstrap. Adjustment of the chinstrap at the front of the assembly produces a simultaneous adjustment of the crossing napestrap portions at the rear of the assembly without the necessity for independent adjustment of the latter strap portions. A padded napestrap retainer secured by straps to the same locations on the nape portion of the helmet is formed with intersecting passages for receiving the crossing strap portions. The retainer reduces chafing and urges the crossing napestrap portions toward the rear of the helmet when the chinstrap is released to facilitate donning and doffing.

Abstract: A paste hopper control system in which the weight and thickness of lead oxide paste applied to a stream of battery grid material from a hopper are independently controlled in response to in-line weight and thickness measurements obtained downstream of the paste hopper. Paste weight is independently controlled on the two sides of the stream by separately driving transversely spaced, independently rotatable hopper paddles in accordance with weight measurements obtained on the respective sides of the stream. Plate thickness is independently controlled on the two sides of the stream by adjusting the heights of the ends of a trowel roller in accordance with downstream thickness measurements and by adjusting the height of the hopper as a unit.

Abstract: A sheet dispenser for selectively dispensing predetermined numbers of sheets, for example, paper currency of different denominations and having plural input stations each receiving a stack of each bill denomination. A feed roller at each station has a high friction surface portion which engages a bottom sheet and feeds the sheet between the feed roller and a cooperating stripper shoe to assure single sheet feeding. An elongated acceleration belt extends beneath all of the feed rollers. Cooperating acceleration pinch wheels form a nip with the belt for accelerating a sheet entering the nip. A curved resilient guide cooperates with each feed roller to guide sheets passing the stripper shoe toward its associated acceleration nip. The sheets pass along the acceleration belt to an outfeed stacker including a stacker wheel to facilitate the formation of a neat stack of sheets. Sensors detect the entry of a sheet into each acceleration nip and to assure proper positioning of the feed roller.

Abstract: On a stitch-forming machine having knitting needles, knocking-over sinkers and controlling sinkers, in addition to their mutual articulated connection, the knocking-over and controlling sinkers are also connected to each other for mutual longitudinal displacement. Contiguous sliding surfaces are provided on the sinkers so as to slide on one another and bring about tilting motion of the knocking-over sinkers during mutual longitudinal displacement of the sinkers. Return parts are also provided for returning the tilted knocking-over sinkers to their initial position.

Abstract: A gas turbine engine having a core gas generator engine for generating combustion gases, with an additional power turbine, an additional fan section, and a booster compressor. The power turbine includes two counter rotatable turbine blade rows which are alternately interdigitized and serve to rotate counter rotating first and second drive shafts, respectively. The fan section also includes counter rotating spaced apart fan blade sections which are respectively connected to the first and second drive shafts. A booster compressor is axially positioned between the spaced apart fan sections. The booster compressor likewise includes first and second blade rows which are counter rotating alternately interdigitized and are likewise driven by the first and second drive shafts. The engine is supported from the two frames to permit the nacelle to be non-structural. The core engine is a modular unit so that it can be separable from the counter rotating turbine, fans and booster.

Abstract: This invention relates to a device for drying, by micro-waves, the selvedge of an advancing flat material, particularly textile material, wherein it comprises a preferably rectangular waveguide of which one end terminates in a short circuit and the other by a bend for connection to the generator. The outer part of the bend, the contiguous face of the guide and the short circuit are provided with a single slot made along the median plane, through which is introduced the selvedge of the material inside the guide. The face of the guide opposite the slot comprises orifices connected via a chamber to a source of suction. Two lips, parallel to each other and to the median plane extend on either side of an all along the slot; their ends form a slight flare. These lips form a quarter-wave trap and facilitate introduction of the selvedge into the guide.

Abstract: A photographic cropper comprises a pair of opposable right-angle portions, each of which contains alternating transversely spaced strips of oppositely magnetized material extending parallel to edges of that portion. The right-angle portions are continuously adjustable relative to each other in the direction of the strips and are relatively adjustable in a direction perpendicular to the strips in equally spaced steps corresponding to the spacing between similarly magnetized strips of each portion.

Abstract: This invention relates to an installation for a ball game, of the football type, which comprises a rectangular playing pitch and at least one return panel made of a hard material whose outer surface is inclined towards the pitch. A preferred embodiment of the installation comprises a central obstacle, for example a net enveloping bows, dividing the pitch into two zones of equal surface area, and two panels placed along the sides of the pitch parallel to the central obstacle. Each of the two panels is constituted by four elements mounted on supports in the form of containers and assembled in two's. The two central elements are flat; the two lateral elements are incurved and are concave in the horizontal plane. In this way, any ball struck from the opponent zone onto the panel is returned by said panel onto the zone along which it is placed.

Abstract: A toothbrush in which the bristles define a surface across the width of the handle having a convex portion along the midline of the handle and concave portions on either side of the convex portion, thereby to conform to the corresponding complementary surface portions of the molars. In a preferred embodiment the bristles are longest along the center of the handle and shortest along the sides of the handle. To facilitate gripping, the handle has a cross-section that is concave along the front of the handle and of uniform thickness across the width of the handle. To minimize displacement of the handle when brushing various portions of the teeth, the handle is rearwardly curved along the lower portion thereof and is forwardly curved along the upper portion thereof.

Abstract: A dual-visor assembly for use with a helmet such as that of an aircraft crew member in which an inner visor is releasably secured to the helmet by snap fasteners that release toward the rear of the helmet, while an outer visor is releasably secured to the helmet over the inner visor by snap fasteners that release toward the front of the helmet to prevent the inadvertent release of both visors simultaneously. The snap fasteners are carried by straps that are secured to the inner surface of the inner visor and to the outer surface of the outer visor to prevent entanglement. Elements carried by the visors space the inner visor from the outer visor as well as from the surface of the helmet. A soft cover is releasably secured over the outer visor in its raised position to prevent scratching of the outer visor or other structures.

Abstract: A novel four passage intake nozzle and valve structure is provided for use with a specially designed, novel water deflection member to provide a pop-up water spray nozzle. The novel intake nozzle and valve structure includes a hollow valve plug, having a lower cylindrical portion provided with four specified longitudinally-extending passages, and an upper cylindrical portion provided with four specified, longitudinally-extending passages the upper and lower passages surrounding a central core. The upper passages are connected to associated lower passages through an associated, smaller diameter aperture. Parts in the valve plug, communicate with an associated one of the four lower passages. An apertured disc, is rotatably movably connected to the valve plug, by means of a shaft disposed within the central, hollow core, the apertured disc having ports therein, the leading edges of the ports therein being adapted to index precisely with the leading edges of selected ports of the valve plug.

Abstract: Pieces of aramid cloth impregnated with a blend of phenolic and polyvinyl butyral resins are cryogenically chilled to the point of embrittlement in a liquid nitrogen bath and then fed to a rotary impact mill to comminute the pieces into a fibrous material suitable for use in brake linings or other friction applications. The rotary impact mill is chilled by cold gaseous nitrogen from the liquid nitrogen bath, the flow of which is controlled in response to a thermocouple disposed near the mill exit.

Abstract: Rough product constituted of a film of plastic material, such as a mono-drawn polyester film, presenting perforations of which the outlines form craters raised with respect to the surface of the film. This product may be obtained according to the needling technique.