Abstract: A cross flow plate separator of the type having an assembly of parallel plates inclined to the horizontal plane in a container between a supply chamber and a discharge chamber, and at least one collecting chamber above or below the plate assembly for collecting components separated from liquid flowing between the plates from the supply to the discharge chambers, and wherein transverse dividing baffles extend the collecting chambers to a depth below a collected sediment layer or into a floating layer as the case may be, is improved by provision of auxiliary transverse baffles in the collecting chamber between the larger dividing baffles, the auxiliary baffles each having one edge in contact with the plate assembly and extending into said collecting chamber a distance substantially short of either sediment or floating layers, to suppress liquid flow exterior to the plate assembly between the dividing baffles.

Abstract: For seeding plots of ground where the seed can be spread over the surface and thereafter cultivated into the soil, use is made of a container in the form of a jar to hold the seed and from which the seed can be ejected by a stream of water. In the device of the invention water serves a multiple purpose. A stream of water is projected through a valve into the jar. One portion of the stream, with the aid of an auxiliary passage, is deflected into the mass of seed to make a slurry. At the same time another portion of the stream with the aid of a second passage travels across the slurry and emerges from an outlet nozzle drawing with it portions of the slurry with its complement of seed. Moistened seed and the accompanying mass of water is ejected and spread over the area to be planted.

Abstract: A self-locking fastener includes an externally threaded fastener element provided with an aperture which is off-center with respect to the axis of the fastener element. Received within the aperture is a locking element which may be of plastic, preferably a polyimide such as VESPEL, for use under high temperature conditions. The aperture is preferably round while the locking element is preferably square, for ease of fabrication, although metal locking elements may be used and the aperture may be of other shapes. The length of the locking element is coordinated and correlated with the major and minor diameters of the fastener such that the end faces of the locking element substantially occupy a significant portion of the valleys between adjacent crests, rather than matching the thread profile, in order to provide effective locking as required by certain designated specifications set forth herein.

Abstract: A linkage is provided between various components within the feed mechanism of an automated gun which allows a feed cover, which includes some of the components of the feed mechanism, to be opened relative to other elements within the feed mechanism in order to allow access or changing of ammunition within the feed mechanism without unlinking the various feed mechanism components. Feed mechanism components within the gun are linked to other feed mechanism components within the rotatable feed cover by means of a ball and bracket combination. The feed cover rotates about a pivot pin on a predetermined axis. The bracket, through which the motive power supplied to the components of the feed mechanism and the feed cover is disposed to lie on and is rotatable about the predetermined axis defined by the pivot pin.

Abstract: For emergency use on a highway there is provided a kit containing a collection of parts in disassembled state but ready for assembly within the confines of a small space no larger than the interior of a conventional automobile and then mounted for visual inspection on the exterior. The kit is one comprising a post for supporting a relatively large signboard. The signboard in turn is provided with aligned spaces for reception of individual letters and numbers selected from a reservoir of multiple letters and numbers to spell out a message visible by passerby.

Abstract: A universal breakout unit is provided whereby aircraft circuits or systems may be accessed and tested regardless of the design differences between the various aircraft systems. The universal breakout unit comprises an array of associated pairs of input and output jacks which are disposed on a face panel of the breakout unit. Each input jack of each associated pair is uniformly wired to a connection with one or more input connectors. Similarly, each one of the output jacks of the associated pairs is wired to one connection within one or more output connectors. The input and output jacks are selectively coupled to each other through a manual toggle switch. A specially wired harness, corresponding to each specific aircraft circuit, is provided for connection to the input connector or output connector.

Abstract: A composite tape for the storage and delivery of very small electronic components makes use of a carrier strip with pockets for containment of individual components and a cover strip. The cover strip extends over all the pockets to hold the components in the pockets until needed. Sprocket holes extend along the side of the carrier strip and are used for reeling up long composite tapes when loaded and for unreeling when components are to be removed. At the time of removal two take-up reels are used. One of the take-up reels pulls the cover strip away from the carrier strip to uncover the pockets. The other take-up reel progressively rolls up the carrier strip after the components have been lifted from the pockets. Various expedients are used for releasably securing the cover strip to the carrier strip.

Abstract: A mechanical seal for closing the gap between adjacent ends of rigid tubes which must remain in fixed position makes use of two complementary semicylindrical shells, each of which carries a molded sealing gasket provided with a recess adapted to fit around the tubes and around the space between them. A clamp attached to one shell has opposite ends which reach around corresponding protuberances on the other shell. The clamp operates to draw the shells and the molded sealing gaskets into sealing engagement with the rigid tube ends and with each other, thereby to close the gap with a dependable, replaceable seal.

Abstract: A spray dispenser for a liquid to be sprayed has a container provided with an inlet valve adapted for connection to a source of pressurized driving gas for pressurizing a head space above the liquid in the container. A spray head including a spray nozzle is mounted to the container and connects through a dispensing valve to a dip tube extending to the vicinity of the container bottom, such that opening of the dispensing valve causes pressurized discharge of the liquid through the spray nozzle.

Abstract: A container and closure therefor adapted for initial commercial use and of such character that it can be repeatedly resealed by the ultimate purchaser features a specially formed rim on the edge of the container and a closure having an annular recess which fits over both the outside and inside edge of the specially formed rim. The rim is turned to form a bead spaced from the edge and there is a complementary bead on the closure spaced from the first bead when the closure is in place to facilitate dislodging the closure when the container is to be opened.

Abstract: The prevent invention is directed to improvements in vending machines of the type having an access door which is opened by a purchaser for removing a purchased article from within the machine.A two-stage hydraulic door closer is provided with a spring to return the access door through its arc of movement from the open to the closed position at a relatively slow, controlled, substantially uniform rate which allows a purchaser to open and release the door and then to remove an article from the interior of the vending machine with one hand without interference by the access door while the article is being removed.

Abstract: A lock collar for a drill bushing and a system for cooling a drill bit during a drilling operation are arranged so as to be incorporated into a single mechanism. The mechanism involves two assemblies, one being a locking liner embedded in a jig plate, and the other being a coolant directing assembly adapted to be mounted on a power-fed tool. There is coolant passage means in the coolant directing assembly which accepts coolant from an appropriate source and directs it through the first mentioned assembly to the cutting edge of the drill bit or other cutting tool while the cutting operation is taking place. By reverse rotation of the coolant directing assembly, that assembly can then be removed for subsequent engagement with another locking liner. Various structures and methods of manufacture are employed for forming the coolant passage means.

Abstract: A stable aqueous foam concentrate for use in the generation of a stable aqueous foam having an expansion ratio of between 10:1 to as high as 1000:1 or more includes an anionic surfactant material of a chain length of between C12 to C14, a glycol or mixtures thereof, a fatty alcohol of between C12 and C14 chain length and a copolymer of maleic anhydride. The components, other than the polymer are mixed to form a micellar structure and the polyer is then added to react with at least one of the components of at least some of the micelles. Upon foam formation, the polymer which is covalently bound operates to reduce the water drainage rate to increase the foam stability, the foam being biodegradable.

Abstract: A semi-resilient pistol grip is made as a one-piece unit with side panels attached to each other at both forward and rear edges by relatively thin resilient portions. Yieldable reinforcement plates are embedded by molding within the side panels. The hollow interior of the grip is specially shaped so as to interlock with the frame of the pistol to retain the grip in place after it has been applied.

Abstract: An improved femoral aterial or venous compressive device is comprised of a flexible pelvic apron positioned over the femoral vessels within the human pelvis. The pelvic apron is placed in position by means of a hip strap. The hip straps are led from the pelvic apron upwardly over the hip points, around the small of the back and down over the opposing hip point back to the pelvic apron. The pelvic apron thus hangs from the hip points of the pelvis much like an apron. A shaped mass or pellet is attached to the under side of the pelvic apron over the incision site of the femoral vessel. An elastically extensible groin strap is then attached to the pelvic apron in the proximity of the shaped mass and drawn tightly through the groin, around the back of the leg, under the buttocks and back upwardly to the pelvic apron in the proximity of the shaped mass. As a result, the tensile force is applied by the groin strap across the pelvic apron up to the hip point and also around the leg.

Abstract: A fluid bearing assembly, e.g., air or gas, of the hydrostatic or hydrodynamic type, for use as a spindle and the like, includes spaced journals mounted on a shaft for rotation therewith. The housing includes spaced support bearings cooperating with the journals to form a gas gap therebetween. The support bearings are resiliently mounted in the housing for axial, radial and angular movement through the use of continuous resilient support elements positioned between the housing and the support bearings and continuously in contact with each. The resilient support elements are preferably self-energizing and comprised of relatively low coefficient of friction materials to reduce the friction of the system thus allowing rapid adjustment of the bearing in response to loads on the shaft. Various details are described with respect to the various structures illustrated, including the details of an air bearing spindle assembly of relatively light weight and capable of operating at speeds in excess of 100,000 RPM.

Abstract: A locking chock which is of the character of a ground brake for the fore and aft wheels of a tandem axle vehicle makes use of a separate chock or blocker for each wheel. Each chock has a flat, ground-engaging face and an oblique wheel-engaging face. There is an initially retacted threaded shaft extending between the chocks which, once the chocks are in proper position, is extended to push the chocks into blocking engagement against the corresponding opposite wheels.

Abstract: Bio- and blood compatible materials are prepared by treating the surface of a substrate to provide reactive primary or secondary amine groups sites which are activated by treatment with a dialdehyde or arylchloride for coupling to a biological in an amount sufficient to provide compatibility. The use of specific substrates, such as a compliant, and elastic material, such as a fabric-elastomer membrane matrix, results in a product having advantageous qualities as a thermal burn dressing, breast prostheses and implants. Detailed procedures and various products are described.

Abstract: A unit fuel injector is modified for use with low lubricity, low viscosity fuels by the following: providing a replaceable, deformable fluid seal between the brushing and the injector body; providing a drain conduit extending through both the bushing and the injector body which connects a fluid collecting cavity in the bore of the bushing to an exterior drain outlet; providing a pair of non-galling materials respectively on the plunger and bushing; providing diametrically symmetrical fuel ports on the bushing; providing a diametrically symmetrical metering groove arrangement on the plunger; and increasing the spray tip orifices to provide approximately a 20% increase in fuel discharge rate.

Abstract: A vertical type kit for tubes containing laboratory specimens of a block of lightweight material of the character of polystyrene in which is molded an array of pockets of assorted sizes and depths for reception of an assortment of tubes, pipettes, fluid containers, and comparable laboratory articles. For those pockets adjacent the edge of the block there are slotted opernings which expose the interiors of the pockets and the contents of the pockets. A relatively deep cover fits snugly over the tops of the specimen tubes and when applied to the block leaves portions of the slotted openings exposed.