Abstract: A variable transmission output coupler and deviationless tuner forms a part of a tunable laser cavity. The device uses frustrated total internal reflection to provide variable output coupling and laser tunability simultaneously. Two Pellin-Broca prisms are pressed against each other by a variable spring pressure mechanism. An adjustable screw regulates the variable force, controlling the thickness of an air film between two prism faces. The Pellin-Broca prisms enable tuning the laser without angular deviation of the output beam. All beams enter and exit at Brewster's Angle, minimizing losses. No coatings are used on the optical elements, reducing the possibility of damage at high operating power of the laser. The coupler may be used in pulsed as well as continuous wave lasers.

Abstract: The preparation of aminoalkyl phenyl selenides and pharmaceutically acceptable salts thereof is disclosed which are useful for the treatment of hypertension and related vascular diseases and the treatment of nervous system dysfunctions.

Abstract: A method and apparatus for producing and viewing stereoscopic images through the use of a color coded image whereby the desired depth or distance is based upon the color of the portion of the image being viewed. Therefore the parts of the image which are to appear distant are colored red whereas the parts of the image to appear in the foreground are colored blue with the middle ground or intermediate distances being colored green or yellow. The color coded image is viewed through a prism glass constructed so that blue light which passes through the prism is bent toward a sharper angle than red light. Because the apex of the prism before each eye points toward the nose or center of the glasses the eyes must then turn more inward to see a blue object than to see a red object even though they are in actuality in the same plane on the display.

Abstract: A pendulum operated, oscillating bow sight is disclosed for use in aiming a bow and arrow. A sighting pin is moved through the range of sighting distances by a lever having a pendulum counterweight on one arm and a sighting pin operatively connected to the other arm. As the elevation of the bow is changed, the pendulum remains in the same relative position, the lever acting to move the sighting pin for an accurate sighting of the target. Only the sighting pin projects into the sight window of the bow, thereby assuring the archer full visibility from the pin to the target, the operative mechanism being mounted on the side of the bow opposite the sight window.

Abstract: An apparatus for making a plurality of formed concrete products. The apparatus comprises a platform having a series of mold cavities, wherein the platform is attached to a vibrator and a hydraulic lift system. The hydraulic lift system lifts and inverts the platform, molds, and cured concrete products for easy removal. The apparatus also comprises a reinforcing bar support system which suspends the reinforcing bars from tapered pins extending into the wet cement, thus eliminating the need for placing reinforcing bar supports on the bottom of the mold cavity.

Abstract: Method and device for removing the crop from the neck of slaughtered poultry, using an extractor to be inserted into the neck of the poultry, having a number of radially projecting parts and surrounded by a sheath with a longitudinal cutout.

Abstract: A barrel lock assembly for use in securing a lock housing over the latch or access point of a securable enclosure, such as a utility meter box, is disclosed, having a bar member with a stop on the distal end for engaging a surface on the lock housing or on the enclosure to be secured. A second bar member is disposed parallel to the first and has a head portion which receives the proximal end of the first bar member. The head and the first bar member have axially aligned apertures for receiving a suitable padlock and holding the assembly together.

Abstract: An adjustable shutter grate for barbecue grills is disclosed having a lower grate member and an upper grate member. The grate members have generally identical patterns of slots formed therethrough with generally identical patterns of bars delimiting the slots. The upper grate is slidable with respect to the lower grate such that the slots may be in complete registry to allow full heat transmission therethrough or the bars of the upper grate may be disposed to overlie the slots of the lower grate, thereby preventing flare-ups in the fire box from burning the food being cooked or to extend cooking time.

Abstract: A waterproof seal assembly for electrical connectors is disclosed having an elastomeric sleeve which encircles a portion of the cable and the plug end of the electrical connector. An adaptor, used to secure the receiving jack, extends from the securing point to meet the sleeve, thereby completely encircling the connection. A sealing bead may be provided on the inner surface of the sleeve to engage the adaptor and seal out moisture, dust, and other corrosive contaminants.

Abstract: A birdhouse for purple martins comprising a tubular enclosure having within a plurality of vertically stacked floors secured to at least one vertical partition forming at least two nesting compartments per tier, each compartment having an opening and a perch. Several enclosures are secured together by a hollow post having a vertical series of hooks mounted thereon to correspond to vertical series of brackets mounted to the back of the enclosure. The birdhouses are suspended from a pole high above the ground via a pulley system. The partition and the floors can be removed for easy cleaning by sliding out either the top or bottom of the enclosure. Alternatively, the birdhouse may be constructed by vertically stacking a series of identical interlocking units topped with a roof, wherein the nesting compartments are situated radially about a central opening which is adapted to slide axially onto a mounting sleeve.

Abstract: A protective garment is disclosed which can be worn about the head and shoulders of a user to protect clothing that is being put on or removed from becoming damaged by contact with the user's cosmetics, coiffure, and facial oils or entanglement with the user's jewelry. The garment is constructed of lace-like material which is lightweight and which does not inhibit the user's vision. A ring member in the upper portion of the garment upon which the material is gathered and an elastic member near the lower portion of the garment, permit its expansion to be comfortably donned and to enclose the wearer's head and hair without disturbing the coiffure.

Abstract: Regeneration of HDS catalysts by sulfiding under controlled conditions and leaching the sulfided catalyst with an acidic aqueous ferric ion containing solution to remove contaminating nickel and vanadium compounds and recovering catalyst of increased BET surface area and pore diameter.

Abstract: The interfacial tension in a liquid-liquid system is determined by estimating the flow rate of the heavier liquid as it is discharged under constant head through a capillary immersed in a body of the lighter liquid, or conversely, of the lighter liquid as it is discharged under constant head through a capillary immersed in a body of the heavier liquid. A known voltage is applied to each drop which forms at and detaches from the capillary tip and an electrometer is used to measure the total electrical charge per drop and the frequency of drop formation/detachment. The determination is made under conditions in which a plot of interfacial tension versus the square of the applied voltages yields two straight lines whose slopes of .+-.C/2 where C is the capacitance of the interface per unit area and the positive value is generated from the positive polarity voltage and the negative from the negative polarity.

Abstract: A process for increasing the wear life of ceramic dies or other ceramic parts which entails firing a beam of nitrogen, carbon or carbon monoxide ions into the ceramic dies or other parts with an energy sufficient to implant the ions in the dies and other parts. This process enhances the wear resistance of the dies and parts, thereby increasing the wear life of the same.The process is particularly useful for treating ceramic dies and other parts which are used in industrial processing.

Abstract: A cut pile tufting machine having a knife holder assembly. The knife holder assembly includes a knife bar bracket carrying a vertically adjustable knife bar slotted along its side. A tongue of an upstanding knife holder bracket is clamped in the slot and a knife holder is carried by the upstanding bracket. Spaced parallel slots, angled from the plane of the knife holder and angled from the plane of the loopers, carry knives which cut the loops of the yarn on the loopers.

Abstract: A tile is disclosed for application to ceilings, walls, and the like, the tile having a thermoplastic or thermoset plastic film layer with a reflective backing applied thereto. The film layer is bonded to a pressed fiberboard, the finished tile exhibiting high temperature and dimensional stability, high impact resistance, and flame resistance far superior to conventional acrylic tiles. The mirrored tile is well suited for application in homes or in public buildings and areas where building codes prohibit use of mirrored glass tiles or acrylic tiles.

Abstract: A cut pile tufting machine having a knife holder assembly. The knife holder assembly includes a knife bar bracket carrying a vertically adjustable knife bar slotted along its side. A tongue of an upstanding knife holder bracket is clamped in the slot and a knife holder is carried by the upstanding bracket. Spaced parallel slots, angled from the plane of the knife holder and angled from the plane of the loopers, carry knives which cut the loops of the yarn on the loopers.

Abstract: The beer is fed to a first solvent extraction column together with an organic solvent for alcohol which solvent is immiscible in water. The alcohol-organic solvent phase is extracted a second time, vacuum distilled or stripped, dried and again vacuum stripped or distilled to produce fuel grade alcohol.

Abstract: A yarn feed mechanism in which a counterlever frame extends forwardly from the tufting machine has high speed and low speed drive shafts driven, in synchronization, with the needle bar. Transversely aligned pairs of yarn feed rolls are suspended from the frame below each shaft and are driven through chains and sprockets from their associated drive shafts when the individual clutches of the rolls are energized. The rolls of transversely aligned pairs of rolls are spaced from each other with no intervening shaft so that intermediate portions of yarns extending between a coil and the rollers can be installed partially around the selected rolls without breaking or removing the yarns from the needles.