Abstract: The present invention relates to a process for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances with the aid of double metal cyanide (DMC) catalysts and in the presence of additives A) chosen from the group consisting of sterically non-hindered phenols, catechols, pyrocatechols, thiazines, phenothiazines, thiazoles, benzothiazoles, oxazines, phenoxazines, 2,2,6,6-tetramethylpiperidine 1-oxyl and nitrostyrenes and optionally in the presence of metal salts B).

Abstract: The invention relates to multi-amine functional oligomers and multi-oxime functional oligomers in addition to a method for producing the same by means of the co-polymerisation of carbonyl carriers such as olefins or dienes, reaction with hydroxylamine and a subsequent selective catalytic hydrogenation.

Abstract: The invention relates to bimetallic complexes in which the ligand contains a salophen unit which complexes copper, manganese or cobalt and a phenanthroline unit which complexes palladium and the two systems are linked by a continuous conjugated system. The invention further relates to the use of these bimetallic complexes as catalysts for the oxidative carbonylation of aromatic hydroxy compounds to form diaryl carbonates, a process for preparing diaryl carbonates using the bimetallic complex as catalyst and also diaryl carbonates prepared by oxidative carbonylation of aromatic hydroxy compounds using the bimetallic complexes of the invention as catalysts.

Abstract: The present invention relates to a process for continuously preparing diaryl carbonates from dialkyl carbonates and at least one monohydroxyl compound in the presence of catalysts, and to the use thereof for preparation of polycarbonates. The alkylene glycol obtained in the preparation of the dialkyl carbonate used is recycled by oxidative carbonylation with carbon monoxide in the presence of a catalyst to give the cyclic alkylene carbonate which is in turn converted to the dialkyl carbonate. More particularly, the process utilizes the alkylene glycol obtained for the diphenyl carbonate preparation process (DPC process).

Abstract: The present invention relates to a process for the preparation of chlorine by gas phase oxidation using a supported catalyst based on ruthenium, characterised in that the catalyst support has a plurality of pores having a pore diameter>50 nm and carries nanoparticles containing ruthenium and/or ruthenium compounds as catalytically active components.

Abstract: The present invention relates to a process for continuously preparing diaryl carbonates from dialkyl carbonates and at least one monohydroxyl compound in the presence of catalysts, and to the use thereof for preparation of polycarbonates. The alkylene glycol obtained in the preparation of the dialkyl carbonate used is recycled by oxidative carbonylation with carbon monoxide in the presence of a catalyst to give the cyclic alkylene carbonate which is in turn converted to the dialkyl carbonate. More particularly, the process utilizes the alkylene glycol obtained for the diphenyl carbonate preparation process (DPC process).

Abstract: This invention relates to a breech assembly of a gun adapted to fire caseless charges, ignited and enhanced with electrothermal chemical (ETC) charges. The gun utilises charges as propellant and a plasma generator cartridge (PGC) for generating plasma when an electrical current is applied thereto. The breech assembly comprises a breech ring, a tilting block assembly, with a spindle installed and a sliding block for supporting or locking the tilting block assembly in a sealed position. The tilting block assembly is movable between a PGC firing orientation and a PGC loading/removal orientation. The breech assembly further includes a crank means, which includes a guide means for rotating the tilting block assembly from the PGC firing orientation to the PGC loading/removal orientation.

Abstract: The invention relates to a charge retaining mechanism for retaining a charge inside a chamber of a barrel of a gun, comprising retaining members consisting of a central retaining member and two sets of end retaining members, extending from an elongate coil spring, into the chamber. The coil spring is located in an elongate groove formation cut into the inner surface of the barrel and extending partially around the inner circumference of the barrel. The charge retaining members are movable between a charge passing position and a charge retaining position and are biased in the direction of the charge retaining position by means of the coil spring.

Abstract: An industrial sewing machine comprises an electronic control means triggering and controlling, dependent on the currently produced seam length, one of a variety of functions such as label insertion or cutting. Each seam length section is defined by the product of stitch length and stitch number. For this purpose, the control means processes one or several given stitch lengths and nominal length data input for each seam length section, to the effect that the length data are divided by the respectively associated stitch length in order to obtain the correct stitch length for each seam length section. This stitch number then is calculated for each stored seam length section, which takes place separately for the corresponding seam length sections of the individual sizes of the ready-made garment. For correction, a correction value is also entered e.g. in mm, so that the stored seam length sections can be corrected by a factor so as to change the stitch length.

Abstract: In an automatic sewing machine for sewing bands onto fabric parts, a metering device (3) which meters the band is electronically coupled to the sewing machine via a position sensor (6) in the form of a pulse generator, a signal processing circuit (8) and a motor, for example a stepping motor (SM). The amount of band per unit time delivered by the metering device depends on the speed. On the other hand, the stitch length of the sewing machine is, however, not independent of the speed but becomes greater with increasing speed. The resulting, undesired tensions between the fabric part on the one hand and the band on the other hand are avoided by a correction means (10) between the pulse generator (6) and the sewing machine (2) and the driver circuit (12) of the stepping motor (SM) of the metering device (3). The correction device ensures that control signals reaching the driver circuit (12) result in corrected, excessive metering of the band at higher sewing machine speeds.

Abstract: During ceramic casting for the production of a molten bath it is often observed that the fire-resistant material becomes eroded and/or solid oxide phases are deposited. Both phenomena interfere with the smooth outflow of the molten bath. The present invention is intended, therefore, to provide an outflow which is stable in shape even when a molten bath is passed through, especially in multiple-sequence casting. To this end, the invention provides for ceramic casting with an envelope (10, 14) which is at least partly external and an internal insert (11, 14, 53) at a distance from the envelope (10, 14), the insert ( b 11, 14, 53) and envelope being connected together.

Abstract: A compact and re-usable ingate device for transferring molten metal to a mold during casting employs a substantially unitary structure resembling a trapezoidal block of refractory material. Within the block are a generally cylindrical rotation chamber, an inlet channel which receives the molten metal and injects it tangentially into the rotation chamber, so that the metal swirls rapidly to separate nonmetallic inclusions, and an outlet channel which conveys the cleaned metal to the mold. The rotation chamber may have a bottom that is positioned below the opening to the outlet channel and walls which slope outward slightly from the bottom to at least the opening, so that inclusions and metal that has solidified at the bottom can be removed from the rotation chamber. Alternately the outlet channel may open into the bottom at an eccentric position, so that all of the molten metal will be drained.

Abstract: An electronic control device for industrial sewing machines, which includes a microprocessor, a programmable fixed value memory, a read/write memory, a display and an entry keyboard. In order to be able to quickly and easily change the program according to which the sewing machine operates, the non-volatile read/write memory is arranged in a cassette provided with plug connector elements. The control device is provided with a cassette receptacle which includes plug receptacle elements which are formed and arranged to correspond to the plug connector elements.

Abstract: To prevent the accumulation of contaminating matter in the harness of a Jacquard weaving machine, a perforated box is provided at the lower end of the harness. Air is supplied into the box so that it flows vertically upwardly along the harness members and prevents dust, fibers and other contaminating matter from settling on the harness.

Abstract: A safety razor intended to be discarded after use, comprising a cutting head and a handle. The cutting head includes two oppositely disposed longitudinal surfaces with cutting edges disposed thereon. In order that both cutting edges may be used, the cutting head is rotatably disposed in an extension piece adjoining the handle.

Abstract: A cigar, cigarette or similar smoking product is perforated immediately prior to wrapping by a set of needles mounted in a block arranged to be moved onto the cigar or cigarette to be perforated. The needles are guided and protected by an apertured stripper plate which is mounted on the block for movement in the direction of the needles. The stripper plate is provided with spring loading between itself and the block so as to urge the stripper plate away from the block.

Abstract: There is disclosed a continuous casting process in which contaminants from a metal melt are separated out by forcing the metal melt to undergo a rotating turbulent flow before it is cast. The desired rotating turbulent flow is achieved by disposing a suitable chamber, through which the melt flows, between the ladle and the mould.

Abstract: Apparatus for slicing food stuffs such as cold meat, sausage and cheese wherein the sliced sections can be selectably stacked or fanned automatically, moved away from the slicing zone, then lifted and moved transversely to a ready station without disorientation or abuse of the sliced foodstuffs.

Abstract: A band saw which has a displaceable guard rail that covers the saw blade in the cutting region thereof above the feed table and is adapted to be displaced upward in a direction parallel to the saw blade and away from the feed table to the height necessary to allow passage of the stock that is being cut. The band saw includes apparatus for raising the guard rail the necessary height in response to exerting pressure by the stock against the guard rail in the direction of cutting, and the apparatus will then maintain the guard rail at a height conforming to the contour of the stock as the latter is passed through the saw blade. Other apparatus provides smooth movement of the guard rail during cutting operations and provides for securing of the guard rail when the band saw is not in operation.