Abstract: A wooden architectural moulding includes fasteners spaced from each other and each include a continuous mounting groove of re-entrant profile having inwardly facing internal ledges, and a unitary fastener provided with deformable limbs having profiled noses which are arranged to interact with the ledges to connect or disconnect the base member.

Abstract: Method and apparatus to determine the position of a liquid/liquid or liquid/vapor interface in a remote inaccessible location, for example in undersea oil storage tanks, by exposing the liquids or liquid and vapor to gamma-radiation from a source adjacent to or within the vessel containing the liquid(s) and monitoring the gamma-radiation issuing from the liquids or liquid and vapor, and using long lengths of optical fibre to convey the signals received to a measuring instrument. The invention employs optical fibres which may be up to several hundred meters long and among its advantages is the need for no moving parts, electrical supply or electronics at the remote location.

Abstract: A method and apparatus for determining the position of a valve for example ball valves, plug valves, gate valves using a source of radiation such as cesium-137 located either on or adjacent to the external surface of the valve or within the valve itself, for example in the ball of a ball valve, and a radiation detector such as a Geiger-Muller tube on the external surface of the valve. Source and detector are aligned and located relative to one another so that the count rate detected is indicative of the valve position. The method is accurate and, for example, allows the position of the ball in a ball valve to be monitored to within .+-.1 mm.

Abstract: A method of testing the integrity of the internal lining of a hollow body, especially a pipeline, by transmitting an ultrasonic wave from the exterior of the body through the adjacent wall of the body and monitoring the wave, if any, reflected from the opposite wall. In many cases, especially concrete linings, an intact or partially intact lining on the adjacent wall will absorb the ultrasonic wave and there is no reflected wave. A reflected wave frequently indicates loss of the lining on the adjacent wall although in some cases depending on, for example, the thickness of the lining or the material of which it is made, a reflected wave may be obtained even when the lining is intact. In such cases comparison of the reflected wave with predetermined standards provides an indication of whether or not the lining is intact.

Abstract: Liquid compositions, such as animal feeds, feed additives, mineral supplements and preservatives for hay, silage, grain, include a thixotropic agent, such as a hydrophilic colloid, which causes the compositions to form pseudoplastic, thixotropic gels and as an active ingredient urea, urea phosphate, phosphoric acid or mixtures thereof.

Abstract: A sealing cartridge for rotating shafts is described, comprising a housing, an inwardly disposed compressed mechanical packing, and an outwardly disposed radial pressure lip seal. The two types of sealing elements cooperate to permit adequate lubrication of the shaft while yet obtaining complete containment of the functional fluid.