Abstract: An organic photochromic composition comprising spiro [indoline-2,3'-[3H]-naphth [2,1-b] [1,4] oxazine] dye (spirooxazine dye) and unconventional ultraviolet stabilizers. The ultraviolet stabilizers improve the light fatigue resistance of the spirooxazine (S.O.) dye and will not hinder the photocolorability of the photochromic composition. The unconventional ultraviolet stabilizers belong to the class of hindered amine light stabilizers (HALS) and excited state quenchers.

Abstract: The organic photochromic composition of this invention comprises trifluoromethyl substituted spiro (indoline-2,3'-(3H) napth-(2,1-b)(1,4)oxazine) (SO) dyes. This new class of (SO) photochromic compounds has a more neutral color when subjected to ultraviolet light irradiation.When used with a photochromic plastic embodiment, these (SO) compounds give the plastic embodiment a high luminous transmittance in an unactivated state, which can be darkened significantly when subjected to ultraviolet light irradiation. When an ultraviolet stabilizer is used with the photochromic compositions of this invention, the light fatigue resistance of the (SO) dye is improved and it will not hinder the photocolorability of the photochromic composition.

Abstract: A method for identifying and isolating clones containing DNA coding for a desired protein is described. DNA prepared from a cell that expresses the desired protein is inserted into an isolation expression vector having means for replication (as a means of producing DNA) and a suitable promoter for expression of said DNA in a predetermined mammalian host cell as well as means for replication in a bacterial cell. The transient expression vector is then inserted into a bacterial cell for replication of the DNA. Pools of DNA, prepared from a predetermined number of bacterial clones so that the nucleic acids (DNA and RNA) is substantially free of other bacterial contaminants are transfected or microinjected into mammalian host cells and conditioned medium from growing such cells is tested for the presence of the desired protein. Positive pools are selected and the clones used to make the pool are screened to identify and isolate the clone containing the desired DNA.

Abstract: A method of forming a color picture tube fluorescent screen by so-called dry process. After a photosticky substance mainly containing a diazonium compound is coated on a panel inner face, phosphor is adhered to portions of the compound which have been exposed to light through a color selection electrode and rendered sticky, and surplus phosphor applied on unexposed portions of the compound is removed, the above steps being consecutively repeated for phosphors of three colors to form picture elements of triads of three color phosphors on the panel inner face. The panel inner face is then treated with an aqueous solution containing at least polymer coagulant.

Abstract: An apparatus and method are disclosed for emulating computer keyboard input from a handprint terminal, the output of the handprint terminal comprising character data along with row and column position data for each character. A line buffer memory temporarily holds characters from the same row. While the characters belonging to any given row are stored in the line buffer memory, local editing may be performed to delete and/or add and/or change characters, with function signals being outputted from the apparatus by the control unit equivalent to function signals that would be outputted from a keyboard. When a character received is in a different row from the character preceeding it, the line buffer memory is cleared of all previous characters that had been loaded into it and carriage return or carriage-up signals are outputted from the control unit corresponding to the row change. The character is then loaded into the line buffer memory to start a new row.

Abstract: A process for etching copper comprising contact of the copper with an etchant that is an aqueous solution of sulfuric acid, a peroxide and a low molecular weight carboxylic acid. The low molecular weight carboxylic acid in the etchant exalts etch rate.

Abstract: A support device as disclosed, such as for use as an innersole for footwear, which provides cushioned support conforming to the shape of the wearer's foot to distribute the weight of the wearer substantially evenly over the supported area. At least one air cushion layer comprising closely spaced, discrete air pockets entrapped between plastic film is adhered to a layer of soft, flexible, open cell foam. A pressure sensitive adhesive is used which impregnates the foam layer and, when in use under pressure, coats the plastic film, thereby reinforcing it against leakage or rupture and conforming it semi-permanently in the pressure-distorted shape. Protective sheathing may be used, adhered to the outer surface of the air pocket layer by pressure sensitive adhesive.

Abstract: Keyboard having contactors and contacts which are selectively urged against one another by depression causing engagement of one by the other, the keyboard having at least contactors or contacts or both which are constructed of a conductive polymeric composition such that upon engagement of a contactor with a contact there is exhibited substantially reduced bounce after repeated closure of contactor against contact even at micro ampere current levels.

Abstract: A process is provided for the waste treatment of metal plating solutions One embodiment of the process comprises removal of the metal values contained in solution and inactivation or destruction of the complexing agent's ability to complex heavy metals. A second embodiment comprises inactivation or destruction of the complexing agent as a first step, formation of a sludge if not formed by inactivation of the complexing agent and sludge removal. Either embodiment permits direct discharge of spent plating solutions into the environment without violation of federal or municipal regulation.

Abstract: A positioning determining system using a delay element and driver transducer for producing a traveling wave in the delay element, the presence of a traveling wave being detectable by a receiver transducer for determining the relative positions of the driver and receiving transducers. In accordance with the invention, a driver transducer, the delay element, and a second transducer form a self-excited feedback loop oscillator, the frequency of oscillation of which is determined by the spatial filtering provided by the second transducer so as to generate a traveling wave having a selected wavelength. The system includes automatic frequency selection to compensate for position sensing errors due to changes in the velocity of propagation of elastic waves arising because of temperature effects on the delay medium.

Abstract: In a magnetron device of the type wherein a magnetron tube is supported by a supporting plate and a waveguide is clamped to the magnetron tube through a metal gasket, the edge of an opening provided for the waveguide is urged against the supporting plate via the metal gasket.

Abstract: The method of making plastic lenses ready for fitting to the contour of the wearer's eye comprising supporting a blank of plastic at one end for rotation about a predetermined axis, turning the blank down to a predetermined diameter, making an annular face cut at the distal end of the blank of predetermined radial width, making a spherically concave base cut at said distal end of predetermined depth relative to said annular face cut, reversing the blank end-for-end, making a first spherically convex cut at said end of the blank of a predetermined radius such that the distance between the inner and outer surfaces is of a predetermined thickness and making a flange cut at the marginal edge of the outer convex surface of lesser radius of curvature; and apparatus for carrying out the method.

Abstract: An air flow transducer wherein the displacement of a diaphragm by a pressure differential at the opposite sides thereof is measured in terms of unit electrical resistance. The pressure differential is provided by supplying the air to the transducer through ports, one of which is in communication with one side of the diaphragm and the other of which is in communication with the opposite side of the diaphragm, and by providing a linear flow restrictor in the latter port which resists air flow in direct proportion to any increase in the air flow to thus produce a pressure drop from one side of the diaphragm to the other which is directly proportional to the increase in flow.

Abstract: A lockbar for fastening a bight of fencing about a fence post or the like structure comprising an elongate sleeve having an interior cross-sectional configuration which is complementary to a portion of the fence post such as to enable telescopically sliding the sleeve onto such portion of the fence post over a bight of the fencing, said sleeve containing an opening at one side and being of such interior dimension as to bindingly accommodate the bight of fencing entering the opening at one side and leaving at the other side. An end of the lockbar is tapered to gather the fencing about the post as it is telescopically slid onto the fence post.

Abstract: Electromechanical apparatus for setting up and erasing alpha-numeric characters or other symbols in braille by means of a tactile display. Dot pins simulating braille are supported for movement within holes in a display plate to a position protruding therefrom to form tactile characters and for retraction to a withdrawn position flush with the surface of the display plate. Solenoid-operated plungers are arranged to selectively project the dot pins. Latch elements are movable by energization of the solenoid to a position to support the plungers in their operative position, a common support for the latch elements movable in a plane perpendicular to the axis of the support plungers to remove the latch elements and spring means for restoring the support plate to its initial position.

Abstract: A bobbin spool for an automatic sewing machine wherein a predetermined length of thread is wound onto the spool for each sewing operation comprising a hub, spaced parallel flanges at opposite ends of the hub, one of said hubs constituting a turbine wheel by means of which the bobbin may be rotated at a high speed by means of a jet of air and a traction engendering element covering an arcuate portion of the hub.

Abstract: Electric discharge lamps of extended life can be produced or cheaper materials used in their manufacture by providing on the internal surface of the envelope and on the exposed surfaces of internal components a protective coating of a metal phosphate or arsenate glass. External surfaces can also be protected against corrosion in air or in the atmosphere within an outer jacket, where this is employed. The coating may be applied in a liquid medium which, preferably after draining, is warmed to evaporate the medium and thereafter baked to form the vitreous coating.

Abstract: A protective covering device for .[.rifles.]. .Iadd.long barreled firearms .Iaddend.includes an integral fiber cloth sheet elastic nature shaped to fit the wooden portion of a rifle; each opposite longitudinal edge of the fiber sheet being applied with adhesive agent and sewn together to constitute a covering body with a single waterproof seam formed thereat; a fastening device longitudinally provided in an opening located in the middle of one side of the covering body; and a butt piece of soft material closely connected with the lower end of the covering body, so that the structure of the protective covering device provides effective protection for the wooden portions of .[.a rifle.]. .Iadd.said firearm.Iaddend..