Abstract: A trailer for transporting and mixing concrete or similar products, comprising a wheeled frame and a mixing drum mounted to the wheeled frame for rotation in a first direction for mixing concrete and in a second direction for discharging concrete from the drum. A unidirectional driving connection is provided between a wheel of the frame and the mixing drum for rotating the drum in the concrete mixing direction as a result of movement of the wheeled frame. An electric motor is also provided on the frame for rotating the drum in the concrete discharging direction.

Abstract: A refrigeration control apparatus especially adapted for use in conjunction with cryogenic coolers includes a brushless variable speed drive motor for powering a mechanical cooler-compressor and electronic control circuitry coupled to the motor allowing motor speed and hence cooling rate to be responsive to changes in the temperature of the volume sought to be cooled. A signal corresponding to sensed temperature is compared to a reference signal derived from motor speed. The difference therebetween used to vary the duty cycle of a high frequency pulse train. The pulse train is used to modulate the drive current applied to the motor through pulse position switching circuitry to vary the speed of the drive motor. High and low motor speed limits are provided along with sensor failure protection circuitry to insure continuous motor operation between chosen limits.

Abstract: A process for purifying and refining gold from wastes and ores is disclosed. The gold to be refined is made the anode in an electroytic cell against an inert cathode. The electrolyte, essentially consists of an impregnated ammonium chloride solution. The impregnant is a nascent-oxygen source for leveling the gold overvoltage at the anode. The cathode is isolated from the gold-containing liquidus by a semi-permeable membrane. The ammonium chloride electrolyte serves as a solvent for the dissolved gold and also complexes with any silver and/or copper commonly found in the impure anode gold. The precipitation of the pure gold at 99.5'% purity is described. The anode is enclosed in an ion permeable bag for collecting any impurities which are insoluble in the gold-containing electrolyte. The pregnant electrolyte, the method and an apparatus for practicing the invention are described.

Abstract: The invention provides a hydrometallurgical process for extracting noble metals from raw materials containing the same, comprising(a) leaching the raw materials with a mineral acid to leave a residue containing the noble metals,(b) treating said residue with a substantially non-aqueous liquid comprising bromine and an apolar organic solvent in which bromine dissolves, to form a complex of the formulaR[MeBr.sub.x ]whereinx=4-6Me=Au, Ag, Pt, PdOs, Ru, Rh, Irand R is an organic moiety of the solvent, and(c) subjecting the complex-containing substantially non-aqueous liquid to electrolysis whereby noble metal is deposited on the cathode and removable therefrom and bromine liquid is formed at the anode and immediately dissolves in the organic solvent.

Abstract: A truck bed cover is provided for the covering and protection of loads of varying height. The cover includes a generally rectangular center section of a size adapted to cover the truck bed, surrounded by four outwardly-extending panels or flaps. Each of the flaps is provided with a series of connectors designed to mate with compatible elements located on the truck bed sides. The connectors are arranged on the panels such that the panels may be folded to provide various effective heights for the cover, the folded portions of the panels being maintained in position by complementary fasteners located on the cover. In a preferred embodiment, the connectors are in the form of grommets which mate with studs located on the truck body.

Abstract: Compounds of the general formula ##STR1## wherein: X is halogen or trifluoromethyl;R.sub.1 is hydrogen, halogen or trifluoromethyl;R.sub.2 is hydrogen methyl or hydroxymethyl;R.sub.3 is hydrogen or lower alkyl; andY is methylene, methylene substituted with a lower alkyl or hydroxyl group, sulfinyl, sulfonyl, oxygen or sulfur, exhibit a cerebral protective effect and are applicable to the treatment of cerebral ischaemia and cerebral hypoxia.The compounds may be made by acylating a suitable piperidine or morpholine with the appropriate cinnamoyl chloride, and if necessary oxidizing the reaction product.

Abstract: Compounds having analgesic activity which have the formula ##STR1## wherein R.sub.1 -R.sub.6 represent hydrogen or a substituent and X and Y together represent inter alia as epoxyethylene, ethylene halohydrin, haloethylene or a --CH.dbd.CH-group.

Abstract: A method of securing hair to patches of skin which includes applying a film of medical adhesive and before it dries to press the ends of the hair into the film. Applying a second sealing film of medical adhesive and allowing it to dry. Applying a layer of Flexible Collodion.

Abstract: An improved spirometer to indicate peak flow expiration from a patient, as well as to enhance pulmonary monitoring. Perpendicular to the standard mouthpiece is a chamber with a centrally positioned rod guiding a spring biased piston, responsive to expiration-induced air flow from the patient.

Abstract: An apparatus for supporting a bottle in an inclined position comprises a neck embracing portion in the form of a substantially closed loop and a generally curved bottle body supporting portion. The portions are each adapted to be mounted in a spaced-apart relationship whereby a bottle may be retained in a slanted position thereby. The resulting structures may be mounted either alone or in combination upon suitable supports to create wine racks of a variety of configurations and capacities.

Abstract: A shock-resistant container consists of a container body dimensioned to receive a shock-sensitive object. An elastomeric element having a peripheral lip and a central shock-absorbing pedestal is placed within the container upon the inserted object and extends substantially across the inside diameter of the container in a non-wall-contacting configuration. The cover is engageable with the elastomeric element and causes the peripheral lip to engage the side wall and the cover to contact the pedestal, resulting in the elastomeric element being retained in a contents-sealing and shock absorbing configuration between the cover and the enclosed object.

Abstract: A support unit for suspending a pipe or similar article from an overhead structure comprises a frame having a base and a pair of opposed sides. The base has an opening therein to accommodate a vertically-oriented hanger-rod means extending downwardly therethrough for support of the pipe. A resilient element having a lower peripheral shoulder is mounted within the frame and is adapted to support the hanger-rod. A retention clip is provided with a generally circular central portion adapted to embrace the resilient element above said shoulder and a pair of opposed ears extending horizontally outward from said central portion, the frame having a pair of opposed slots dimensioned to accept the ears and retain the clip and the embraced resilient element in position.

Abstract: A method for removing packaging from a cotton or similar bale comprises delivering the bale to a first station and fixing the bale in position at the station. A cutter mechanism is driven along the length of the bale to cut the bale strips. The bale is then released and passed to a second station where the strapping and a portion of the wrappings are removed. The bale is then passed to a third station where the bale is rotated 180 degrees about a transverse axis. The bale is passed to a fourth station where the remaining wrappings are removed. The bale is then transferred to a fifth station where the bale is made available for further processing of the cotton.

Abstract: An occasional greeting device consists of the combination of a gift item, such as an item of wearing apparel, having a display panel portion thereon and a greeting card connected to the item. The card has a first, exposed panel bearing a representation of the gift item, the portion of said representation depicting the display panel portion being exised to form an opening in the panel. A second interior panel is hinged to the first panel, and bears a message sought to be delivered by said card. The message is located on the second panel such that a portion of the message appears through the opening in the front panel when said panel is closed; the message portion so appearing preferably being of an abstract character. The display portion of the gift item bears a copy of the message portion appearing through the opening, thus creating a relationship between the card and gift item, the true intent thereof being known only to the item recipient.

Abstract: The invention is concerned with the use of certain fatty acids and inhibitors of an enzyme in effecting modifications to the lipid structure of cell membranes. The invention also relates to the formulation of pharmaceutical compositions and medicaments and to such products per se; to the treatment of a variety of clinical and veterinary disorders associated with a lowering of the saturation index of cell membranes, including malignancies, viral disorders and AIDS; and to the use of the active materials of the invention in the relief of pain.The active principals in the present invention are saturated fatty acids having from 12 to 28 carbon atoms in the alkyl chain, e.g. stearic acid, or pharmaceutically acceptable derivatives thereof; and inhibitors of the enzyme .DELTA.-9 desaturase, e.g. sterculic acid and malvalic acid or pharmacologically active derivatives or analogues thereof.

Abstract: An improvement for centrifugal sifter units having an elongated sifting chamber having a central axis, a coaxial screen surface therein and a series of paddles mounted on a shaft driven for rotation about the central axis for urging siftable material through the screen surface to separate fines from overs, comprises a series of nozzles mounted on the shaft for rotation therewith. The nozzles are oriented to direct gas streams at the screen surface whereby agglutinating fines are dislodged from each other and are directed through the screen surface. A source of compressed gas is operatively connected to the nozzles. The gas streams may be ionized to further improve throughput.

Abstract: A make-up package in the form of a mounting card with a central opening therethrough, into which is mounted a make-up bottle having make-up therein of a certain color. Another opening is formed in the mounting card, across the center of which is placed a color strip, matching the color of make-up in the bottle. By placing, for example, the user's finger behind the other opening, the matching of skin color to make-up can be accomplished without opening the bottle.

Abstract: An improved card holder comprises a base having opposed first and second ends; a first arm pivotally mounted to and spaced from said first end of said base, biased to pivot away from said base and a second arm overlying said first arm and pivotally mounted to and spaced from said second end of said base, biased to pivot towards said base. The first and second arms are in a parallel, card-retaining relationship to allow cards and similar items to be selectively inserted, maintained, and removed from between the arms.

Abstract: A process for purifying and refining gold to 98+% purity is dislosed. The gold to be refined is made the anode in an electrolytic cell with a solution of ammonium chloride as the electrolyte. The purified gold is collected in anode bags and the non-gold impurities including silver are dissolved in the electrolyte. The silver is complexed with the ammonium ion in the electrolyte.