Abstract: Compounds of the following formula and a method for their preparation are disclosed: ##STR1## wherein Ar is substituted or unsubstituted phenyl, R, R' and R" may be similar or dissimilar and are each selected from the group consisting of lower alkyl of from 1 to about 5 carbon atoms. The compounds of this invention are useful as antimicrobial agents.

Abstract: A constant meshed, infinitely variable gear ratio transmission using relatively low pressure, low volume hydraulic systems to control the transmission gear ratio. The transmission includes a gear box having an input and output shaft. The gear box houses two sets of planetary gears which couple the input and output shafts together. A pinion gear is fixed to each shaft. A set of planetary gears mesh with each pinion and a plurality of planetary gear shafts connect the corresponding planetary gears of each pinion together. A cage is rotatably supported in the housing. A first hydraulic system controls the rotation of the cage. A second and independent hydraulic system controls the rotation of the planetary gear shafts by selectably controlling the rotation of the cage and the rotation of the planetary gear shafts so that the gear ratio for the transmission may be intermediately selected.

Abstract: A system for aligning and regapping the guide grooves on a chain saw guide bar which includes a suitably adapted handheld swaging tool uniquely designed to return bent or worn guide grooves to the correct position and separation. The swaging tool contains a gauge which is adapted to fit in the center of the bar guide groove and a pair of swaging plates which are adapted to force the walls of the bar guide groove into proper relationship with one another upon the application of force to the swaging tool. The system may optionally further include a bar file guide which is adapted to file the peripheral edges of the chain saw bar.

Abstract: Fibrous materials are disclosed having incorporated therein upgraded waste sulphite liquor; the liquor is neutralized, e. g., with sodium borate, sodium aluminate, reacidified, if needed, with alum; the modified sulphite waste liquor of hardwoods as well as articles of manufacture of fibrous materials such as corrugated medium made of waste materials are diclosed; further, articles of manufacture thus modified include starch or sizing and are within the scope of the invention.

Abstract: A game apparatus which may be played by two or more players, having playing pieces in the shape of equilateral hexagons for each player and a pre-marked game board having a matrix of contiguous spaces disposed thereon in the shape of equilateral hexagons which accommodate the playing pieces. At least two different types of playing pieces (and as many as three types) may be provided, i.e. offensive pieces and defensive pieces, and optionally hybrid pieces known as offensive-defensive pieces. The offensive playing pieces are of a variety of different types all of which provide a distinctive, continuous path from one peripheral edge of the piece to at least one other peripheral edge. The defensive pieces are provided in a variety of types all of which provide a distinctive, non-continuous path. Offensive-defensive pieces have characteristics of both offensive and defensive playing pieces.

Abstract: A process and apparatus are described for stripping uranium values from a uranium-loaded organic extractant phase containing, usually, a tertiary amine capable of forming organic-soluble uranium complexes. The sulphate-containing aqueous strip liquor is fed in co-current with the extractant phase to be stripped through a number of mixing stages in series connected one to another without intermediate settling stages and finally to a final settling stage. A "primary" dispersion is maintained in each mixing stage and controlled stepwise pH adjustment of the mixing stages is effected by metered addition of a base, such as ammonia.

Abstract: Water-containing glycol is heated first at atmospheric or superatmospheric pressure to partially remove water and concentrate the glycol and is then heated at subatmospheric pressure to further concentrate the glycol.

Abstract: A compound selected from a 2,4-diamino-5-thiobenzylpyrimidine of the formula: ##STR1## in which R is selected from hydrogen, alkyl, lower alkoxy, and halogen and R' is alkyl; and pharmacologically acceptable acid addition salts thereof. These compounds have an anti-bacterial action and are sulphonamide potentiators.

Abstract: A two-piece piston includes head and skirt sections having opposed annular recesses to define a continuous peripheral coolant chamber. A transverse coolant conveying channel communicating at opposite ends with the chamber may also be formed in the skirt section to provide cooling for the central portion of the piston crown.

Abstract: An apparatus and method are disclosed for blending flowable solid materials. These are conveyed in turn, conveniently over a belt weigher, to a tripper mounted above a hopper so as to build up a first charge consisting of a plurality of inclined contiguous bands each of a different material. A paddle feeder removes material in a series of passes along the bottom of the first charge, the material removed being conveyed again to the tripper for discharge into a second hopper adjacent the first, thereby to build up a second charge also consisting of a plurality of inclined contiguous bands each of a different material. A second paddle feeder then removes material in a series of passes along the second charge to form the final blend.

Abstract: A process for treating the purge stream from an aqueous sodium sulfite/sodium bisulfite solution used in the removal (recovery) of sulfur dioxide from gas is provided wherein the purge stream is mixed with sodium hydroxide or sodium carbonate, the mix is cooled and sodium sulfite hydrate is crystallized and recycled for recovery of sulfur dioxide, and the residual mother liquor containing impurities is discarded.

Abstract: A tennis practice device which uses a hollow container which may be filled with sand or water as an anchor for a tennis ball attached to the lid of the container by means of an elongated elastic line. The line is attached to the tennis ball by means of a nylon adapter line which is threaded through the ball and tied in a loop. The elastic line is attached to the lid by means of a swivel hook. The device provides a completely portable tennis practice apparatus which may be filled with a weighty material during use and which serves as a storage container for the tennis ball and line when it is not in use.

Abstract: A compact in the form of a strip is manufactured from metal powder by introducing the powder into the gap between a pair of rotatable rolls. The compact so formed has unwanted longitudinally extending edge portions and these portions are removed by reducing them to powder to substantially the same particle size as that of the powder from which the compact is formed. The portions are conveniently reduced to powder by engaging them with rotary members in the form of cutters which impact the compact and break off individual particles. The powder may be recycled into the roll gap either directly or after further treatment which does not include comminution of the powder.

Abstract: A process for utilization of the reaction heat generated by the catalytic oxidation of o-xylene with air to phthalic anhydride in a tubular reactor, which heat is partially carried away from the reactor by the reaction gas and partially by fused salt used as a cooling medium. Water is heated by heat exchange with the hot reaction gas, evaporated by heat exchange with the fused salt and the steam is superheated and expanded in a condensation turbine coupled with the feed air compressor. The hot reaction gas is used successively to heat, or evaporate, a heat carrier liquid serving for the heating of the phthalic anhydride distillation, and the pressurized water. Low pressure steam can be generated by heat exchange of pressurized water with the reaction gas and used for heating the feed air and/or o-xylene.

Abstract: A profile grinding machine for grinding the contour surface of an article to be ground such as a wrist watch case or the like is disclosed. The machine comprises a work shaft provided at its one end with a chuck for supporting the wrist watch case to be engaged with a grinder and a profile cam shaft provided at its one end with a profiling cam to be engaged with a profiling cam follower and at another end with a head swing control cam engaged with a cam follower roller. Both the work shaft and the profile cam shaft are rotatably supported by a head swing supporting shaft provided on a profile slide and driven in synchronism with each other. The profile slide is biased in a direction toward the profiling cam follower so as to urge the profiling cam against the profiling cam follower.

Abstract: A crop harvesting apparatus for harvesting treeborne crops such as fruits and nuts. A plurality of crop-severing rods extend from a planar support member from which the rods are mounted for rotation. In preferred embodiments, each crop-severing rod includes a crop-contacting surface portion. The rotating rods are thrust lengthwise into a crop-bearing plant and rotated, causing the crop-contacting surface portions to rotate orbitally to contact the crops to sever them from the plant. In one embodiment the crop-severing rods are mounted for orbital rotation on the outer cylindrical surface of a rotating cylinder, and in another embodiment the crop-severing rods extend from an end surface of a rotating cylinder, with the crop-severing rod longitudinal axis offset from the rotating cylinder longitudinal axis. In a further embodiment, the crop-severing rods are of oval cross-section and each rotates about its longitudinal axis to orbitally rotate a crop-contacting surface portion.

Abstract: Agriculturally-active aqueous compositions containing an agriculturally-active organic substance and water are stabilized by the addition to the system of a minor amount of N-acetyl-p-aminophenol. The N-acetyl-p-aminophenol is relatively non-toxic and is degradable, thereby making it particularly attractive for agricultural use in view of its high degree of effectiveness as a stabilizer. Advantageous agriculturally-active organic substances are the compounds having carbon to carbon unsaturation, particularly those having aliphatic unsaturation.

Abstract: A continuous solvent extraction process for tar-sand uses a closed rotary contactor. A tar-sand/water slurry stream and a solvent stream are passed countercurrent through the contactor and three phases are formed: tar-sand solids at the bottom of the contactor, a barrier layer of water in which the solids are contained and an uppermost solvent phase. The solids during their travel through the contactor are repeatedly lifted off the bottom of the contactor and tumbled through the solvent phase so that the bitumen oils content of the tar-sand is progressively dissolved in the solvent. A solvent stream containing the dissolved bitumen oils is removed from one end of the contactor and discard stream consisting essentially of sand and water is removed from the other end.

Abstract: 3-Prenyl-substituted menaquinones are made by reacting a 3-metallo-2-alkyl-1,4-di(alkoxy or aralkoxy) naphthalene with a prenyl halide, and then oxidizing the resulting 3-prenyl-2-alkyl-1,4-di(alkoxy or aralkoxy) naphthalene to prepare the corresponding 3-prenyl-substituted menaquinone. The metallo substituent at the 3-position may be Li, Li/Cu, Cu or MgBr. The oxidation is advantageously conducted by the use of argentic oxide.

Abstract: Polypeptides, omega-N-acylated and/or hydrocarbon-containing esters or amides of polypeptides are useful in the treatment of schizophrenia. The polypeptide-containing materials have a characteristic T-V-L structure, i.e., ##STR1## The preferred compositions are N-acylated T-V-L containing polypeptides, especially amides.