摘要:
A powder meter tube includes a metering tube and a metering assembly. The metering assembly is retained in the metering tube. The metering tube includes a nut cutout and a graduated slot. The metering assembly includes a threaded shaft, a micrometer nut, a piston and a bearing. A threaded hole is formed through the micrometer nut to threadably receive the threaded shaft. The bearing includes a base and two spring fingers that extend from the base. The piston is pressed on to one end of the threaded shaft and the bearing pressed on to an opposite end of the threaded shaft. The spring fingers allow the metering assembly to be inserted into the metering tube and the micrometer nut to protrude through the nut cutout. In use, the micrometer nut is rotated in either direction to increase or decrease the powder capacity in the metering tube.
摘要:
Method of making an examination of a specimen by use of a microscope comprises during a first session, conducting a microscopic examination of a specimen by manipulation of the specimen stage while video recording the examination and during a subsequent session, replaying the recording to produce a video image, and manipulating the stage with reference to the video image so that the image observed by use of the microscope is substantially the same as the video image.
摘要:
An apparatus for acetone clearing of cellulose or nitrate membrane filters includes an elongated electric heater element with tubing for transporting acetone coiled around said heater element and in contact therewith. Liquid acetone is introduced to said tubing wherein it is heated by said heater element and acetone vapor is discharged from said tubing. The temperature of the coiled tubing is thermostatically controlled. Acetone vapor is removed from said tubing and passed over a glass slide having an exposed filter containing particulars, such as asbestos fibers. The vapors clear the filter to render it translucent for examination in optical microscopy.
摘要:
This invention relates to improved hydrocarbon lubricating oil compositions. More particularly this invention relates to hydrocarbon oil compositions which possess improved oxidation inhibition properties through the presence of a new additive functioning as an antioxidant or as an antioxidant catalyst which acts as a chain terminating species for oxidation reactions.
摘要:
An ammunition casing reloader die set. The sizer and decapping die employs a decapping rod that is frictionally held in the die body with a collet so it can yield without damage. The decapping pin is press fitted in the rod. The bullet seater die is provided with a capped adjusting screw in which the bullet seater element floats so it adjusts itself into alignment when a bullet on a casing is rammed into it.
摘要:
Disclosed are substituted phenol comprising the reaction product of an alkyl phenol, said alkyl substituent containing about 50 to about 20,000 carbon atoms, and aliphatic unsaturated carboxylic acid containing about 3 to about 100 carbon atoms; and a process for the manufacture of said substituted phenol. The substituted phenol can have the formula ##STR1## where R comprises alkyl substituent containing from about 50 to about 20,000 carbon atoms, and n and r are integers such that n+r.gtoreq.5.ltoreq.15.
摘要:
Ortho-quinones with alkyl, olefin polymer, or halogen substituents and a process for the preparation of these compounds comprising a base catalyzed halogen oxidation of alkylated phenol.
摘要:
Novel addition agents for lubricants, are obtained by reacting a high molecular weight olefin polymer, having an average molecular weight of at least about 600, with acetonitrile and a halogen, for example chlorine, in the presence of a catalyst, such as iodine, for example, to form the intermediate A which is then reacted with a piperazine or aminoalkyl-substituted piperazine.
摘要:
Aliphatic hydrocarbon-substituted sulfonic acids, sulfonyl chlorides, amino sulfonic acids, sulfonamides and alkaline earth metal salts of such acids whose hydrocarbon substituent has an average molecular weight in the range of 300 to 200,000 are novel, useful compounds readily prepared through reaction of chlorosulfonic acid with a polymeric hydrocarbon having at least one carbon to carbon double bond as in the liquid to solid polypropene and polybutene or copolymer of two or more C.sub.2 to C.sub.6 unsaturated hydrocarbons having said average molecular weight. Such sulfonic acids, sulfonyl chlorides, amino sulfonic acids, sulfonamides and alkaline earth metal salts of the acid are soluble in hydrocarbon feeds (i.e., gasoline, diesel and heating fuels) and in lubricating oils as are the alkaline earth metal salts of such acids.
摘要:
A case trimmer and chamfer tool preferably includes a trim die, an end cutter, a crank, an outer chamfer blade, an inner chamfer blade and a height adjustment ring. The end cutter is slidably retained in the trim die. The inner and outer chamfer blades are spring loaded. The end cutter trims a length of the cartridge case. The inner and outer wall of the cartridge case are chamfered by the inner and outer chamfer blades. An adjustment boss extends downward from one end of the crank and a rotating knob is retained on the other end thereof. The end cutter is retained in the adjustment boss. The height adjustment ring is retained on the adjustment boss. A second embodiment is adapted for handling straight cartridge cases instead of rifle cartridge cases. The case trimmer and chamfer tool and a cartridge case are retained in a loading press.