Apparatus (10) for the concentration and beneficiation of particulate matter by froth flotation employs a constriction plate (14) which separates vertically arranged flotation (17) and hydraulic (18) compartments. A discharge duct (29) may be used to extend through the hydraulic compartment (18) and to open through the constriction plate (14) centrally thereof. Orifices (16) in the constriction pl...

The timepiece of this invention comprises at least one hand making a revolution in twelve hours and a disc making a revolution in twenty-four hours. A crown enables simultaneous setting of the hand and disc display when pulled out to the second position. When rotated in one sense while in the first pulled-out position the crown sets the disc only. Between the disc and the hand there is interposed ...

An automatic control system for a vehicle such as a fork lift truck automates the transportation, loading and unloading operations of the vehicle in a work area. Leader cables disposed in the work area are supplied with instruction signals of respectively different frequencies from terminal units in response to commands from a central control device. Any cable or a combination of two cables forms ...

A remote optical inspection system including an inspection head. The inspection head has a passageway through which pellets or other objects are passed. A window is provided along the passageway through which light is beamed against the objects being inspected. A plurality of lens assemblies are arranged about the window so that reflected light can be gathered and transferred to a plurality of coh...

A system for detecting a fault in the program execution of a programmed digital signal processing system is disclosed. The fault detection system may include a plurality of monitoring devices for monitoring the execution of a plurality of program portions of the programmed processor and for generating a fault signal in response to a detected faulty program execution condition. Logic circuitry is i...

An apparatus for storing and automatically dispensing and applying surgical staples (100) in serial fashion includes a pistol-like tool having means (101) for storing a large plurality of staples (100) in parallel, stacked column fashion aligned along the longitudinal (barrel) axis of the tool. A form tool (120) and an anvil tool (126) extend longitudinally parallel to the axis, and are advanced i...

The invention relates to adhesive tape useful in supporting an array of parallel optical fibers in an optical transmission cable, comprising an adhesive-covered biaxially oriented polyethylene terephthalate film which is less than about 50 micrometers thick and exhibits gauche and trans parameters as described herein of between about 0.6 and 0.725 for the gauche parameter and about 3.1 or greater ...

-A- COMPOSITIONS FOR THE PRODUCTION OF POLYURETHANE FOAM MATERIALS HAVING IMPROVED FORM STABILITY The present invention relates to one component polyurethane foam compositions which comprise mixtures of prepolymers of a polyol and an excess of isocyanate; the usual adjuvants for polyurethane foams, an expanding gas under pressure and a polysiloxane compound with antifoam activity stored in a valve...

A supervisory circuit for use in an integrated circuit to supervise the program execution of a processing unit is disclosed. The processing unit generates a restart signal at a particular duty cycle under proper program execution conditions and at an undesirable duty cycle under improper program execution conditions. The supervising circuit includes a capacitive or like circuit element for convert...

Metal castings having reduced residual carbon ash and surface flaws are produced by an evaporative pattern casting process, in which an organic foam pattern is vaporized upon contact with a molten metal leaving a metal replica of the pattern. The organic foam used in this process comprises a polymer formed by polymerizing CO2 with one or more oxirane compounds.

A biologically active composition is prepared comprising a polyurethane hydrogel containing surface active coal, a polymer having cationic groups and cells having enzymatic activity and being capable of growth. The composition is used for purifying waste water and outgoing air.

An aqueous frothed and filled vinyl chloride and/or vinylidene chloride polymer latex containing an emulsified plasticizer is used to coat and impregnate the back of a carpet. The carpet containing the froth is heated to drive off or evaporate the water and gel the vinyl polymer. While still hot or soft, the froth on the carpet is densified to obtain uniform dimensions or thickness. The resulting ...

This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion...

A device for determining the position of a moving part, particularly to a device containing a sensor carried by the moving part and designed to supply two out-of-phase signals, each assuming alternately the value 0 or 1 as the sensor is carried in one or the other direction. The device also has means of supplying pulses (ZD), each of which corresponds to one step forward on the part of the sensor,...

Gas discharge display device having a vacuum-tight envelope with a front and back plate. A control unit divides the interior of the envelope filled with gas into a back and front space. The back space has at least one plasma cathode and at least one plasma anode. The front plate carries a cathodoluminescent layer and a layer electrode. The control unit contains at least one electrode plane extendi...

Rubber compositions and articles such as tires having improved metal adhesion and metal adhesion retention to metallic reinforcement including brass-plated and zincplated steel cord. The improvement comprises admixing from about 0.25 to about 15.0 parts per hundred rubber (phr) of a cobalt or nickel salt and from about 1.0 to about 12.5 phr of an amine-modified, non-heat reactive alkylphenolformal...

A process for producing a stretched article of ultrahigh-molecular-weight polyethylene; which comprises (1) melt-kneading a mixture composed of (A) 15 to 80 parts by weight, per 100 parts by weight of components (A) and (B) combined, of ultrahigh-molecular-weight polyethylene having an inherent viscosity ¢n! of at least 5 dl/g, and (B) 85 to 20 parts by weight, per 100 parts by weight of component...