Abstract: In the improved gypsum board in accordance with this invention, the board has a gypsum core and first and second cover sheets of fibrous material on opposing faces. The core has a first stratum parallel to and adjacent the first cover sheet. This stratum does not contain any fibers of the fibrous material. This first stratum has relatively few voids and a substantially greater density than the central portion of the core of the board. The central portion of the core has a plurality of relatively large discrete voids substantially uniformly distributed throughout the central portion of the core. These voids have substantially spherical coherent walls.

Abstract: A working spotlight for illuminating a wide area, particularly for motor-vehicles, of a type with a light source arranged at a focal point of a first reflector wherein the first reflector has an approximately parabolic cross section (5) below an optical axis and a substantially non-corrective lens (16) covering the reflector to produce an uncomplicated and inexpensive spotlight which can have a relatively small volume but an efficient wide-area illumination output. The light source has a transverse linear filament (3) which extends horizontally and perpendicular to the optical axis while a horizontal cross section of the reflector through the optical axis forms a first approximately elliptical portion (4).

Abstract: The components present in the sample with a mobile phase A in 1st section is separated. In 2nd section there is provided with an inserting line of a dilute solution for diluting the mobile phase A and a trapping column which forces the dilute solution to pass but catches the components by connecting said line to said column. In 3rd section, the components caught by the trapping column are introduced into mass spectrometer by using a mobile phase B. It is preferable to use respectively different mobile phases for the mobile phase A and the mobile phase B. It is good to install separating columns in 1st and 3rd sections. It is also desired to add the retaining apparatus of the components separated in 1st section.

Abstract: A settling apparatus for the separation of amalgam from waste water in a dental procedure includes an inclined passage through which the water is caused to flow from below and upwards while depositing amalgam. The inclined passage has an inclination of between 3.degree. and 15.degree.. It is filled with a large number of thin-walled, narrow tubes, which contact each other in a side-by-side manner. The water flows from below and upwards through the tubes and through the channels between the tubes while amalgam is settled and deposited on the interior, as well as on the exterior, surfaces of the tubes.

Abstract: A waste liquid treatment system (10) includes an aeration chamber (10A) and a settling chamber (13). an aerator (11) is disposed within the aeration chamber (10A). A conduit (12) delivers liquid from the aeration chamber (10A) to the settling chamber (13). A gas pocket (P) is provided in the aerating chamber (10A), with at least a portion of the gas pocket (P) being situated beneath the liquid level line (L.sub.13) of the settling chamber (13). Conduits (18 and 19) are provided for delivering liquid from the settling chamber (13) to the aeration chamber (10A). The conduits (18 and 19) have respective outlets (24, 26) which empty into the gas pocket (P) at an elevation below the settling chamber liquid level line (L.sub.13). In one embodiment, a gas pocket (P) is provided in the interior of a tubular component (23) of the aerator (11). In another embodiment, a gas pocket (P') is provided beneath a concave hood (32) which traps gas bubbles (30) introduced into an aeration chamber (110A).

Abstract: A sheet material feeder for high speed singulating and seriatim feeding of sheet material articles from the bottom of a stack disposed in a hopper comprises apparatus for feeding sheets from the stack and a restrainer device for restraining all but the lowermorst sheet from being fed from the hopper by virture of transversely corrugating the sheet while it is fed from the hopper and passed through the restrainer.

Abstract: In a method of encoding and decoding informational data for transmission to a storage medium, a group G of physical blocks written to the storage medium includes both user data information blocks and auxiliary error correction blocks. Each block (B.sub.r,c) included in the group G belongs both to a row r and a column c. Informational data is formatted into preselected bit positions of the user data information blocks. Values for bit positions in the auxiliary error correction blocks are generated by performing an exclusive OR operation upon values in corresponding bit positions in a subgroup of strategically selected user data blocks. By strategically selecting the user data blocks to be included in the subgroup, the method facilitates recovery of entire blocks, and even rows or columns of blocks.

Abstract: An adhesive injector has a piston inserted in a cylinder which is forwardly movable therein by a compressive force, the cylinder having a nozzle projecting from a front end portion thereof. The injector includes: a pair of holes defined adjacent each other in a rear end portion of the cylinder, a slit formed in the cylinder between the holes, a pin insertable through the holes, and cutout portions formed in the piston for engagement with the pin.

Abstract: A check valve comprises a valve body having inlet and outlet passages and a cavity in which a diaphragm operates. The inlet passage connects with the cavity through an upstream wall partly defining the cavity and the outlet passage connects with the cavity through a downstream wall partly defining the cavity. The diaphragm has an annular sheet metal part which is secured to one of the walls and carries a movable seal. The movable seal cooperates with a sealing element to provide a circular fluid seal. In a first embodiment, the inlet passage connects with the cavity through openings located inside the periphery of the circular fluid seal. In a second embodiment the inlet passage connects with the cavity through openings located outside the periphery of the circular fluid seal. The movable seal may be a sealing surface in which case the sealing element is a seal ring, or the movable seal may comprise a seal ring in which case the sealing element is a sealing surface.

Abstract: In a transmission system, a solenoid controlled electro-hydraulically actuated creeper gear coupler permits selection of very low speeds and provision is made to prevent creeper gear engagement/disengagement unless conrolled by the operator and then only if specified conditions exist. Current flow through the solenoid which actuates the creeper gear is monitored at all times to provide a controlled engagement/disengagement of the creeper gear in the event the monitoried conditions are not within prescribed limits. The current is monitored as the creeper solenoid is energized to insure sufficient pull-in current and while it is energized to insure sufficient hold-in current. The solenoid current is also monitored when the solenoid is not energized. Short or open circuit conditions are detected before they can cause an unexpected engagement or disengagement of the creeper gear.

Abstract: The clasp (1) is telescopically extensible. It includes a first tubular element (2) capped on its upper and lateral faces by a plurality of links (5) resembling those employed for the rest of the bracelet. Into the first element there may be introduced a second tubular element (8) which in turn is adapted to accommodate a third element (10) in the form of a plate to which is attached a blocking system in order to maintain the clasp in its retracted position. The clasp is for a bracelet and shows no greater thickness relative to the links forming said bracelet.

Abstract: A filler material for spiral gaskets has: 36.5 weight percent or more fibrous material, composed of 5 to 20 weight percent ceramic fibers, 13.5 to 25 weight percent sepiolite and 1 to 10 weight percent organic fibers; 59 weight percent or less inorganic powder; and 1 to 10 weight percent organic polymeric binder. The filler material of the present invention may be used as a substitute for conventional asbestos filler material in spiral gaskets and is superior to asbestos filler material in heat resistance.

Abstract: A composite material for use as a construction material for high energy density beam reflectors and for other purposes, comprising a substrate and a chemically vapor deposited layer of silicon carbide formed thereon, wherein the crystal faces in said chemically vapor deposited layer of silicon carbide are oriented to the (220) plane as indicated by Miller indices.

Abstract: A check stager-feeder for accumulating, in a stage, a predetermined number of checks or sheets in a stack and for high-speed feeding of the stack to further equipment comprising a kicker/stop member movable by a solenoid between two angular orientations for stopping and accumulating into a stack on a fixed slide surface sheets delivered thereto while in one orientation and, while moving to the other orientation, for kicking and thereby feeding upon the slide surface the accumulated stack further. An embodiment of the stager-feeder includes a separator-sheet retriever for marked separator sheets fed thereto and interposed in the stream of received sheets, the separator sheets serving to control the number of sheets to be accumulated in a stack.

Abstract: A method and apparatus for impregnating a fibrous base material with a varnish liquid, wherein the so-impregnated base material is substantially air free. A base material is passed under the surface of and through a supply of low-viscosity liquid such as to impregnate the base material with the low-viscosity liquid and displace air from the base material so as to provide a substantially air-free base material. The air-free base material is passed through an entrance for and into a syphon. An inert gas is supplied to the syphon so as to maintain an inert gas atmosphere therein sufficient to maintain the air-free condition of the base material. The air-free base material is then passed through an exit of the syphon and under the surface of and through a supply of varnish liquid sufficiently to displace the low-viscosity liquid from the air-free base material and impregnate the air-free base material with the varnish liquid.

Abstract: An improved document feeder for feeding a predetermined number of singulated checks in seriatim for accumulation into a check stack package, for delivering the package to further handling device, and for realigning the checks therein while the package is being delivered. The feeder comprises a singulator; a feeder section that feeds the singulated checks via a spider wheel to an accumulator bin for accumulation into a check stack package; and reciprocating kicker arms for realigning the accumulated check stack package and for delivering the check stack package to further handling devices. The reciprocating kicker arms the accumulated check stack package by engaging trailing edges of the checks in the check stack package and kicking the package into engagement between driven nip wheels. The kicker arms and the driven nip wheels deliver the check stack package.

Abstract: A cartridge rack (70) includes ribs (816) for partitioning the rack into cells (826) for accommodating magnetic tape cartridges. A pair of resilient engagement fingers (832) are provided in each cell (826). Each engagement finger (826) has a chevron-shaped projection (840) to engage a light path window (862) provided on a lid of a standard 8 mm. magnetic tape cartridge. The ribs (816) also have a cartridge engagement ridge (860) thereon which engages a larger lip gap (863L) of a standard 8 mm. magnetic tape cartridge when the cartridge is inserted in a required orientation into a cell (826) of the rack (70). The rack (70) also has a bridging member (818) which is surmounted by an indicia (868) bearing projection (866). The rack (70) further has resilient engagement tabs (870) for mounting the rack (70) on an extrusion mount (76). Orientation means (880) are provided on a bottom wall of the rack (70 ) to preclude the rack from being mounted on the extrusion mount in any but the required orientation.

Abstract: A crutch tip assembly (12) comprises a solid base (14) having substantially vertical side surfaces (18, 20, 54, 56) and outwardly, downwardly tapered front and rear surfaces (22, 24, 51a, 51b) with convex bottom surface (26, 52) forming an approximate arc elongated in a direction approximately parallel to the side surfaces. A laterally outwardly protruding lip (28, 50) is positioned adjacent the bottom surface near bottom edges of the side, front and rear surfaces on which a resilient boot (16, 70) having the shape of a rocker is mounted. The resilient boot defines a mounting cavity (36, 72) for snugly receiving the solid-base bottom surface and the lip for holding the boot on the solid base. An elongated, centered, arch-shaped groove (38, 74) extends along a bottom surface of the boot. The solid base is attached to a single support 33 at a lower end of a crutch frame 34 by means of a tongue (30, 68) and groove (32) joint and alternately an adhesive or other affixing means.

Abstract: In a method for vaccinating fishes, the fishes are first anaesthetized in a vessel (1) containing anaesthetic-admixed water. From the vessel, the fishes-as they are anaesthetized and as a consequence thereof sink to the bottom-are conveyed upwards anad transferred to an unidirectional device (4). The unidirectional device (4) ensures that the further conveyed fishes are carried head first in a feeding direction. From the unidirectional device (4), the fishes are individually carried, via an edgewise-turner (6) ensuring turning of the fishes edgewise, into a vaccination device (7) having injection means for individual vaccination of each fish. A machine for carrying out this method comprises a conveyor (2) for conveying anaesthetized fishes from the vessel (1) to the unidirectional device (4), wherefrom the fishes are individually carried, via the edgewise-turner (6), into a vaccination chamber (15) provided with vaccination devices for vaccination of the fishes individually.

Abstract: A clinical suction tube holder assembly (10), and a method of its use, involve the use of a receiver (12), having a wall (13), for defining a tube-receiving passage (18) attached to a mounting block (14) having pressure sensitive adhesive (16) thereon for selectively mounting the clinical suction tube holder assembly to a fixed structure at a support surface (36) on which a subject (40) to be treated is resting. After treating the subject with a fluid-flow tube (26) a portion thereof is selectively folded on itself and inserted into the tube receiving passage for being held therein at a fixed location with a blocked lumen (30) and for being selectively removed therefrom and unfolded, to thereby unblock its lumen, for further treatment.