Abstract: A versatile lathe chuck characterized by a chuck body threaded on the inside for attachment to a lathe spindle and to receive at its work-turning end a variety of fittings and further characterized by a jam or locking screw which threads into the inside of the chuck to lock the insert in place.

Abstract: An improved dental etchant and a process for using it which comprises a phosphoric acid etchant containing a colorant which changes color at a pH of about 2.5.

Abstract: An apparatus and method enabling safe removeal of the drum head of a coking drum. The invention provides an apparatus remotely placing a carriage under the drum head and the carriage is adapted to remotely engage the drum head, tightly support the head against the drum while workers are in the area, and to lower the head and carry it away. Included in the system is a safety feature wherein the carriage is normally supported by springs which in the event of excessive load automatically transfers the load carrier to an overhead beam designed to carry any excessive loads.

Abstract: An alerting device (FIG. 2) for keeping drivers of motorized vehicles alert and an alerting device in combination with a motorized vehicle, the alerting device comprising, in combination, a holder (20) for one or more spray vials (22) filled with a fluid which will stimulate the driver, an electronic alarm (27) activated when fluid in the vial is sprayed and means to attach said device to a section of the cab of the vehicle.

Abstract: An improved spliced conveyor belt and the method of making it to provide improved impact resistance which comprises laying abutted panels of covering material which contain weft reinforcing strands at a bias angle over the area of the splice so that the reinforcing strands are continuous across the full width of the belt throughout the area of the splice.

Abstract: A recirculating powder lubricant delivery system having improved oxidative stability and a lubricant therefor where the lubricant is a solid lubricant selected from a group of molybdenum disulfide, graphite and graphite fluoride, and wherein the solid lubricant is microencapsulated from an aqueous suspension of an alkali metal silicate containing a water soluble phosphate.

Abstract: Solid lubricants and a lubricating system having oxidative stability up to about 1500.degree. F. (815.degree. C.) comprising a solid lubricant selected from the group of molybdenum disulfide, graphite and a graphite fluoride having the formula (CF.sub.x).sub.n where x is from about 0.25 to about 1.25 and n is unknown, wherein the solid lubricant is characterized by being microencapsulated from an aqueous system with a thermally and oxidatively stable inorganic resin. Other embodiments of the invention comprise recirculating powder lubricant delivery systems using such microencapsulated lubricants and an encapsulated molybdenum disulfide pyrolyzed at a temperature of from about 400.degree. to about 1000.degree. C.

Abstract: An insulated container for keeping enzymes and biological materials held in microfuge tubes cold for an extended period of time which comprises a container having a central core made of metal (preferably of aluminum), which has receptacles for microfuge tubes and the container also having thermal insulation between the core and the inside surface of the container. The bottom of the container may be recessed to mitigate heat conductance from a laboratory bench top. A lid or cover which fits inside the top of the container is optional.

Abstract: A light-weight bottle stabilized against knockdown or tipping over comprising in combination, the bottle and a lead weight which weight is wrapped around the base of the bottle and wherein at least the surface contacting the bottle is covered with a cushioning material.

Abstract: An improved wig stand made of a compressible, open cell foam formed to resemble the shape of the human head and having a substantially flat base and a plurality of channels sufficient to ventilate the area under a wig resting on the wig stand.

Abstract: An improved method for reducing misfires in large diameter unlined blastholes by fitting on the primer used in the blasthole a centering device comprised of a semi-conducting plastic material.

Abstract: A lubricant composition having improved extreme pressure and antiwear properties comprising a base lubricant and an additive consisting of from about 0.01 to about 30 weight percent of said lubricant of a mixture of a metal thiosulfate and a metal phosphate.

Abstract: Modified starch compositions and their use for flocculating mineral waste residues, particularly the red mud containing alumina liquors from bauxite residues, comprising the addition to an alumina liquor of a flocculating amount of a methylated starch which, optionally, may be hydrolyzed, or a methylated starch which is also sulfonated and, optionally, may be hydrolyzed. Preferably, the methylated starch compositions are potato and dasheen starch derivatives prepared at temperatures of about 50.degree. to about 85.degree. C.

Abstract: A fishing line lure activator device adapted to fit a fishing rod having a battey driven motor which drives an eccentric wheel and a guide wheel in alignment with the eccentric wheel over which wheels a fishing line is looped to impart a swimming action to the lure in the water.

Abstract: An electronic microbalance shielded against static effects by surrounding the balance pan with a glass or plastic material which has an electrically conducting antistatic surface on the shield.

Abstract: A supporting structure for a large laboratory flask comprising a supporting frame, a ring or hoop swivelly attached to said frame, flask supporting straps suspended from said ring, and locking and unlocking means cooperating between said frame and said ring in a fixed or swivelling condition.