Abstract: A stethoscope having a head wherein a diaphragm sound chamber is disposed within a housing which allows for the head to be used as a diaphragm sound chamber or a bell sound chamber without removal of the stethoscope head from the patient.

Abstract: A device for measuring the presence or time-average amounts of at least one selected gas in a mixture thereof which comprises an enclosure having therewithin at least one substance which interacts with the gas to be monitored. Attenuating means associated with the enclosure regulate gas movement within said enclosure to insure that an essentially placid layer of gas exists between the attenuating means and the reactive substance insuring that the amount of selected gas available to react with the interactive substance is basically a function of the concentration of the gas or gases being measured and its diffusion through the placid layer. The amount of selected gas measured is substantially independent of the velocity and impinging angle of the gas mixture at the interface of the enclosure with the ambient gas mixture. The device is capable of controlling mass uptake and response time without losing velocity and angle independence.

Abstract: Substrates or articles having surfaces with silanol-reactive groups, e.g. glassware and ceramic cookware having hydroxylic surfaces, are coated with hydrolyzable di-silyl poly(perfluorooxyalkylene) compounds to provide said substrates or articles with a durable, oil and water repellent, abrasion resistant polysiloxane coating or film.

Abstract: Slotted resilient wire-connectors or contact elements are removably disposed in an elongate array and are rapidly forcibly applied seriatim to electrical conductors supported across slots in receptor bases on electrical apparatus to make rapid solderless spring compression reserve contact with the electrical conductors.

Abstract: The maleic acid adduct of anthracene is used as a starting material for 11-amino-12-carboalkoxy-9,10-dihydro-9,10-ethanoanthracene, which through reaction with nitrous acid in a protic solvent provides an 11-substituted-12-carboalkoxy-10,11-dihydro-5,10-methano-5H-dibenzo[a,d]cy cloheptene which is then converted into the useful intermediate 12-carboxy-10,11-dihydro-5,10-methano-5H-dibenzo[a,d]cycloheptene.

Abstract: A body of volatile, inorganic, normally liquid chemical which reacts with water, such as liquid sulfur trioxide, is treated to suppress the evolution of noxious acidic vapors therefrom to the atmosphere by applying to the exposed surface of said liquid body a treating agent consisting essentially of a fluorinated aliphatic liquid thickened with a thickening agent, such as fumed silica, to increase the viscosity thereof and render it relatively immobile and reduce the rate of flow of said vapors from said liquid body.

Abstract: Terpolymers of N-alkyl perfluoroalkanesulfonamidoalkyl (meth)acrylate, higher alkyl (meth)acrylate and polyoxyalkylene glycol mono- to bis-(meth)acrylates in a prescribed range of concentrations provide useful solubilities in organic solvents including aliphatic, cycloaliphatic and aromatic hydrocarbons with minimal formation of foams. Textiles and surfaces coated with the terpolymers show desirable oleophobicity.

Abstract: A connector for tapping a run wire at a loop therein has a grooved snubbing post disposed centrally of a loopreceiving channel, and a bifurcate spring compression reserve contact member fitting within the groove in the post and across the channel.

Abstract: 2-Trifluoromethylmethanesulfonanilides substituted in the para (four) position by phenylthio, phenylsulfinyl or phenylsulfonyl groups and agriculturally acceptable salts thereof and compositions containing these compounds are useful herbicides.

Abstract: Ballistically implantable projectile adapted to carry biologically active materials into a living animal body and thereafter to provide sustained release of said biologically active material into said living animal body.

Abstract: An esthetic dispenser package for shipping, displaying and dispensing convolutely wound rolls of ribbon material, which package permits the visible inspection of the ribbon as to quantity and color and the controlled dispensing during use. The package contains a plurality of hexagonally-shaped chambers formed in a pair of hinged shells in which the wound ribbon may be placed, the rolls of ribbon being wound without a core.

Abstract: Dibenzobicyclo[3.2.1]octadienes substituted in the 8 position by substituted aminoalkyl groups, and salts thereof, are described. These compounds have central nervous system activity as anti-depressants.

Abstract: One-piece flat contact element with opposing bifurcate ends and opposing centrally open extended sides makes possible a compact wire-splicing assembly capable of accepting a wide range of wire sizes and offering high dielectric strength.

Abstract: Transparent glass microspheres that are based on a ternary system of TiO.sub.2, heavy-metal oxide selected from BaO and CdO, and strong glass-forming oxide selected from SiO.sub.2, P.sub.2 O.sub.5, and GeO.sub.2 are disclosed. The microspheres have improved uniformity in optical properties and in handling properties, whereby retroreflective products of greater retroreflectivity can be made.

Abstract: A toner applicator for delivering an optimum amount of toner powder to a recording electrode of an electrographic recording system whereby a portion of said toner may be electrographically deposited on a recording medium in the form of toner images. The toner is fed from a toner reservoir onto the recording medium in a relatively uniform layer by a toner supply means that is adjustable to vary the thickness of the toner layer deposited on the recording medium. The toner layer is then transported on the recording medium to the recording electrode, and a magnetic field is induced in the recording electrode to draw the toner layer into a position bridging between the recording electrode and the recording medium for being redeposited on the recording medium in the form of toner images.

Abstract: A cleaning fabric having a contact surface against which the surface of a photographic film can be rubbed to remove foreign particles from the film. The fabric is a laminate comprising a non-woven wiping layer of soft fine intersecting bonded fibers defining the contact surface. The fibers in the wiping layer are randomly spaced and disposed to provide openings in the wiping layer for receiving foreign particles, and the wiping layer is compacted in a direction normal to the contact surface so that few ends or loops of the fibers project past the wiping surface, thereby restricting shearing or tearing loose of the fibers by the edges of a passing photographic film. An open non-woven lofty backing layer is adhered to the surface of the wiping layer opposite the contact surface.

Abstract: Novel semiconductive tertiary and higher order type copper-Group V transition metal chalcogenides having useful broad-band photoconductive properties are characterized by containing fewer than 100 ppm of impurities as determined by electron microprobe analysis, excluding doping agents which may be present. These materials are made e.g. by chemical vapor transport methods using the powdered chalcogenide or mixtures of stoichiometric amounts of the elements of which it is composed, with a small amount of halogen or hydrogen halide and heating the mixture in vacuum in a temperature gradient in which the highest temperature is below about 1200.degree. C. Photoconducting devices can be made e.g. by supplying electrodes to a thin film of the material upon a dielectric substrate.

Abstract: A method for enhancing the visibility on a television screen of small difficult-to-see game objects that are thrown or shot according to the rules of the game. The method comprises photographing the game while the game object that is being used in the game carries a retroreflective layer attached to the exterior surface of the object; and projecting a light beam parallel to the optical axis of said television camera so that light retroreflected by said retroreflective layer causes a visible contrast between the image of the game object and the image of the background for the object in a telecast picture.

Abstract: A quick release device for a powered surgical instrument, for example, a Mueller osteotomy saw, includes a coupling having a spindle which forms a mounting surface, the spindle being driven with the coupling by the power source. Located on the spindle is a locking pin assembly movable between a locking and an unlocking position, the spindle cooperating with a plurality of concentrically disposed latching pins which latch the medical instrument to the spindle in driving relationship therewith. The medical instrument, for example, a saw blade, includes a predetermined number of apertures corresponding to the number of latching pins on the spindle, each of the apertures including a pin receiving end and a latching end. Eccentrically positioned with respect to the apertures is a locking pin receiving aperture through which the locking pin on the spindle is received.

Abstract: A device including two head assemblies for applying parallel lengths of elastic reflex-light reflective strip material in a controlled stretched condition around the outer surface of a tire casing rotated past the head assemblies. Each head assembly includes an applying wheel and a mechanism for advancing an end of a supply length of the strip material from a cutting mechanism to the applying wheel as the device moves the applying wheel to press the strip material against the moving tire casing and apply the same while the assembly provides a regulated tension in the strip material being applied. The device also includes means for sensing the end of an applied length of strip material as it returns toward the applying station, and for operating the severing mechanism to provide a predetermined overlap for the ends of the strip material applied around the tire casing.