Abstract: The invention relates to a process for the recovery of gold from an alkaline aqueous liquid solution containing gold-cyanide ion, and possibly silver and/or copper and/or mercury, which comprises adding a quantity of thiourea to the solution so as to allow formation of a gold complex with thiourea which gold complex is soluble and stable in dilute acid solution, then adjusting the pH of the solution to make the solution mildly acidic, whereby gold and mercury remain in solution in the liquid and silver and/or copper is incorporated in a precipitate containing silver and/or copper cyanide compounds, and then separating the precipitate from the liquid to leave a solution of dissolved gold complex and subsequently recovering the gold from the solution.

Abstract: A technique and receptacle for disinfecting biological fluids such as whole blood is described in which the disinfectant is prepositioned in a receptacle for biological fluids utilized for clinical evaluation in an amount which is sufficient to disinfect the fluid without interfering with subsequent clinical evaluation. The invention is specifically directed to disinfecting viral contaminants in blood by providing a closed container for the blood specimen which contains an amount of an aldehyde based disinfectant such as glutaraldehyde sufficient to destroy without otherwise affecting the integrity of the specimen for future evaluation. The amount of aldehyde based disinfectant positioned in the container is adjusted to provide an ultimate concentration in the blood specimen of aldehyde of about 0.1 to 2.5 weight percent and is buffered to a pH of about 7.2 to 8.5 percent preferably about 7.4.

Abstract: An electrical connector comprising a metal plate (30) containing a plurality of apertures (32). Disposed on each side of the plate (30) is a resilient rubber plug (42,44). Pairs of holes (45) in the plugs (42,44) are aligned with the apertures (32) in the plate (30) for receiving respective filter elements (16) therein. Adjacent each aperture (32) in the plate there is integrally formed with the plate (32) a resilient contact finger (36) which lies adjacent and parallel to the filter element (16). Disposed around the periphery of the metal plate (30) is a plurality of further fingers (38) which lie adjacent and parallel to the inner side wall of a tubular metal housing (34). A pair of rigid plates (46,48) disposed outboard of the rubber plugs (42,44) can be selectively brought together whereby to compress the plugs therebetween. The resulting lateral distortion of the plugs is arranged to have a three-fold effect. Fristly, the filter elements are gripped tightly in the holes in the plugs.

Abstract: Sewing heads (40,41) of a sewing apparatus for sewing casings for quilts are arranged in two horizontal parallel rows which are perpendicular to the stitching direction. For forming zig-zag partitions (FIG. 2) the heads (40) of the upper row are staggered with respect to those (41) of the lower row. Pleats (42) formed in the upper facing (30) are guided together with the upper edges of a pair of divider strips (32) into the stitching zones of the upper heads (40) and pleats (43) of the lower facing (31) are guided with the lower edges of two divider strips (32) of adjoining pairs into stitching zones of the lower heads (41). For forming transverse partitions (FIG. 9), a single row of sewing heads, each having two stitching zones, may be used, a separate divider strip (332) being fed to each sewing head.

Abstract: Flexible tubing suitable for medical use is disclosed having a set of relatively stiff sections intercalated with a set of relatively flexible sections, each flexible section having a length no greater than twice the diameter of the tubing.

Abstract: A device is disclosed for simultaneously applying heat to food such as pasta while applying agitation in the form of a repetitive irregular rotational motion similar to that of a chef constantly turning the contents of a pan while it is being heated. The device of the invention comprises a container mounted on an elongated beam assembly which is horizontally disposed for repetitive reciprocating movement to impart the desired rotational motion to the container holding the food while it is being heated. One end of the beam assembly is connected to a rotating arm which imparts a reciprocating movement to the beam. The beam assembly is supported at a point between its two ends to accommodate the reciprocating motion imparted by the rotating wheel.

Abstract: Perforated tubing for surgical drainage applications and the like in which perforations are located in one or more grooves extending lengthwise of the tubing such that the sides of the grooves block access of tissue to the perforations and obturation of the tubing is prevented.

Abstract: The present invention is directed towards a container for the handling of truck-trailer chassis in overland and marine transportation. The container is capable of being stacked with other containers and is provided with front and rear endframes, removably secured to front and rear bolsters of the interlocking container chassis frame, which hold a stack of chassis of same or different lengths, in place for shipping. Strong points provided at the corners of the front and rear end endframes facilitating handling and allowing for the securement of the container to overland transportation vehicles and when stowed above deck on marine vessels through the use of conventional securement devices.

Abstract: A process for use of a low-cost personal computer to display video images which provide the effect of animation in synchronization with an audio program, such as voice or environmental sounds, originating independently of the computer. The computer is provided with a data base including intervals between recorded cue tones preceding the audio program, and intervals between video events to be synchronized with the audio program, all such original intervals corresponding to the original recording transport speed of the audio program. While consumer audio playback devices operate at a stable playback transport speed, it is seldom precisely the same as the original recording speed. During playback, the viewer indicates playback intervals between cue tones, for instance by tapping a key of the computer keyboard whenever a cue tone is played.

Abstract: A method and apparatus for laser marking of an article in which a pulsed, linearly polarized laser beam is passed through a stencil-type mask and imaged onto an article to be marked.In order to increase the overall transmission and hence the efficiency of the process, at least part of the laser beam energy which is reflected from the opaque parts of the mask is collected and redirected to the mask. The apparatus includes means for separating by beam polarization that portion of the laser radiation reflected by the opaque parts of the stencil and means for reflecting said portion of the radiation back to the stencil.

Abstract: The present invention provides a shock absorber of monotube or twin-tube configuration wherein the piston within the shock absorber includes an electromagnetically operable bypass valve, the electromagnetically operable valve being controlled remotely from the outside of the shock absorber via an electrical connection which extends along the piston rod. In a twin tube configuration according to the present invention, the foot valve assembly also includes an electromagnetically operable bypass valve which is remotely controlled from the outside of the shock absorber via an electrical connection. These electrical connections do not affect the overall design of the shock absorber and can thus be easily included in a vehicle design. Further, these electrical connections can be connected to a microprocessor so that the shock absorber valves are controlled by the microprocessor dependent upon the values of certain parameters, e.g. speed, load, fed to the microprocessor from appropriate sensors.

Abstract: A gas turbine (22) of a compound internal combustion engine is coupled by a double reduction gear (32) to the engine crankshaft. The turbine shaft (30) is journalled by a floating bearing (48) adjacent the turbine wheel (22) and by two bearings (50 and 52) adjacent the gear wheel (38). At least one of the latter bearings (50, 52) is a fixed bearing. The intermediate shaft (42) of the double reduction gear incorporates a flexible coupling (56) which is disposed outside the gearbox (60). The flexible coupling has rubber or the like resilient material (88) between its parts (84, 86).

Abstract: This invention concerns a boarding installation for vehicles for transporting passengers in air terminals comprising a support equipped with a pivoting plate and a counter-plate which are complementary, of the form of an arc of a circle, and means for controlling the pivoting.