Abstract: A video display system for a mobile simulator, comprising a shock-isolated projector assembly for projecting video images, a shock-isolated first mirror assembly disposed in combination with the projector assembly, a shock-isolated second mirror assembly disposed in combination with the first mirror assembly, and a shock-isolated screen assembly disposed in combination with the second mirror assembly, wherein the projector assembly, the first mirror assembly, the second mirror assembly, and the screen assembly are configured, in combination, such that the video images projected by the projector assembly are directed to the first mirror assembly, are reflected from the first mirror assembly to the second mirror assembly, and are subsequently reflected from the second mirror assembly onto the screen assembly.

Abstract: A novel process has been provided for the preparation of both a liquid peat extract substantially-free from biologically-undesirable concentrations of metal elements and compounds, and a solid peat residue substantially-free from biologically-undesirable concentration of metal elements and compounds. The process includes the first step of having specifically-recited physical and chemical properties, to a relatively mild acid hydrolyzation reaction under sterile controlled conditions at superatmospheric pressure at a temperature above the boiling point of water to a maximum elevated temperature of about 130.degree. C. for a time of from about 1 to about 2 hours in an inert container to provide a reacted medium comprising an aqueous liquid peat extract phase and a solid hydrolyzed peat phase dispersed therethrough. The pH of the reaction medium is then adjusted to near neutral. The neutralized reaction medium is removed from the inert container and is pressed and filtered in inert equipment.

Abstract: Hydrostatic journal bearing assemblies are described which include a housing member having a generally circular bore therethrough, a journal bearing member having a bore therethrough for the support of a shaft, the journal bearing member being located within the bore of the housing wherein the journal bearing member comprises at least one generally annular sleeve portion, an increased diameter flange portion at the axially inner end of the journal bearing member, the journal bearing member being sealed against the ingress of pressurized fluid into a space between the bore of the housing member and the outer surface of the annular sleeve portion, the annular sleeve portion being pivotally supported intermediate the axially outer end of the journal bearing member and the flange portion and the bearing member having means for access of a source of pressurized fluid between the bore of the journal member and the shaft to be supported.

Abstract: A vehicle for seismic surveying fitted with a shock source device, and an electronic control and display device. The control and display device has a display panel which provides a display of required shock positions, and a movable display which moves along the display of impact positions in dependance upon vehicle travel to facilitate positioning of the vehicle at the required shock positions.

Abstract: Apparatus for determining the position of a point on an object or the shape of a portion thereof comprising an object table; a measuring index; an optical viewing device; a part-reflecting mirror device arranged to enable an image of the measuring mark to be brought into coincidence with the said point or portion when the object is viewed through the optical viewing device; a movement effecting device for effecting relative movement of the object table and of the measuring index so as to bring the image of the measuring index into said coincidence; and, an indicator responsive to said movement effecting device for indicating the position of said point or the shape of said portion.

Abstract: A measuring instrument in the form of a plotter has a part-reflecting mirror device and a measuring mark or index which may be moved in X, Y and Z directions into coincidence with an image produced by the mirror device of an object to be plotted, contoured or measured, and means associated with the measuring mark or index for producing a plot, contour or measurement of the object, the mirror device comprising two parallel sheets of transparent material having the same optical properties and the same thickness, the image reflected by one or both of the adjacent surfaces being substantially stronger than any images reflected by the remaining surfaces of the sheets.

Abstract: For cooling the working face of mechanical working elements, such as bearings, rotary seals and friction devices, the cooling fluid flows through a passage which is located behind the working face and contains a porous thermally-conductive mass having interconnecting pores. The conductive material of the porous mass is in intimate thermal contact with the wall behind the working face and acts as a heat exchanger having an extended heat transfer surface. The porous mass preferably comprises a sintered highly-conductive material.

Abstract: A flow control means has two opposed co-operating faces between which fluid is introduced at an inlet zone so as to flow radially towards at least one downstream zone, one face being loaded or loadable towards the other face and comprising a pressure-deflectable elastic or elastically loaded element which is deflectable to provide a clearance between the co-operating faces which is convergent towards the or each downstream zone.

Abstract: A positive clearance radial face seal characterized in that at least one of its two opposed sealing faces comprises a pressure-deflectable elastic or elastically loaded element which deflects, in steady state operating conditions, to provide a clearance between the sealing faces which converges in the radial direction towards the downstream zone of the seal, the deflection changing with variations in the operating conditions in a manner tending to restore the steady state clearance.