Abstract: A device for detecting and monitoring damage to races (3 and receiver 24) or adjacent areas on the rings (1 and 2) in antifriction bearings. The object of the present invention is a device that will not only precisely measure the dimensions of cracks and pits in the race or in the transition between the races and the ring but will also forward the results to the processing equipment with no perforations in the ring and without cables and plugs. One or more sensors (13 and 14) are positioned between the rolling components (5) inside the antifriction bearing, whereby the signals they generate are transmitted electromagnetically to a receiver antenna (23) outside the antifriction bearing.

Abstract: A process for the catalytic gas-phase oxidation of propene or isobutene to acrolein or methacrolein in a tubular fixed bed reactor or catalytically active oxides with a .gtoreq.90% conversion of the initial olefin on a single passage, wherein the temperature of the gases containing the reactants in the direction of flow along the tubes from their entrance until the conversion of the initial olefin is from 30 to 70% is from 360.degree. to 420.degree. C. and is then adjusted to from 360.degree. to 300.degree. C. until the conversion of the initial olefin is from 80 to 90% and is thereafter maintained at from 330.degree. to 390.degree. C. until the gases emerge from the tubes, is described.

Abstract: New 9-anthrylalkyl compounds having the general formula ##STR1## wherein R is hydrogen or an alkyl group, whereby, however, not more than one of the groups R is an alkyl group; R.sub.1 is hydrogen, lower alkyl, halogen or nitro; n is an integer of from 1 to 7, whereby, however, the total number of carbon atoms in the group --CHR--(CHR).sub.n -- does not exceed 8; and X is halogen, an azide group or a succinimidyl group.The new compounds are prepared from 9-anthrylalcohols which are reacted with a compound X--CO--X wherein X is a halogen, and then optionally with compounds giving azide or succinimidyl group. The compounds are used as derivatization reagents for separation and detection purposes.Intermediates for preparation of the above defined 9-anthrylalkyl compounds wherein one R is an alkyl group are 9-anthrylalcohols with the group --CHR--(CHR).sub.n --OH, wherein one R is an alkyl group.

Abstract: A large open-center roller bearing consisting of single or multiple outer and inner rings with rollers rolling over races between the rings, wherein one ring can accommodate an ultrasonic probe and the other ring has a contact surface. The object is to provide a bearing that can be simply and reliably tested by ultrasound. One or more contact surfaces (19, 24, and 25) extend around one or more of the outer surfaces of the ring (2 or 3) being tested.

Abstract: The refractory block arrangement for a rotary slide valve closure for metal melt containers having a bottom discharge, which arrangement comprises a refractory top block; a refractory rotatable frustoconical discharge block having a discharge flow channel having a vertical central axis that coincides with the central axis of the flow channel of the top block, and an axis of rotation extending at an acute angle to the vertical central axis of the discharge flow channel and intersecting the vertical central axis at a point lying in a cross-sectional plane of the discharge opening; and further comprising a drivable annular entraining casing rotatably supported in the slide valve casing of the rotary slide valve closure for supporting the frustoconical discharge block.

Abstract: A rotary slide valve closure for metal melt containers having a bottom discharge wherein the rotary slide valve closure has a fixed refractory top block and a rotary refractory discharge block sealingly tight engaging the fixed refractory top block and including a discharge flow duct positionable coaxial with the flow duct of the fixed refractory top block. An assembly plate is attached to the bottom of a metal melt container. Joint means pivotally supports a slide valve casing on the assembly plate. The rotary slide valve closure also includes an annular entraining casing pivotally arranged in the slide valve casing for supporting the rotary refractory discharge block. The rotary discharge block has a substantially flat sealing and a sliding surface engaging the fixed refractory top block and a spherical portion extending below the sealing and sliding surface. The entraining casing has a spherical inner surface engaging the spherical portion of the rotary refractory discharge block.

Abstract: New 9-anthrylalkyl compounds having the general formula ##STR1## wherein R is hydrogen or an alkyl group, whereby, however, not more than one of the groups R is an alkyl group; R.sub.1 is hydrogen, lower alkyl, halogen or nitro; n is an integer of from 1 to 7, whereby, however, the total number of carbon atoms in the group --CHR--(CHR).sub.n -- does not exceed 8; and X is halogen, an azide group or a succinimidyl group.The new compounds are prepared from 9-anthrylalcohols which are reacted with a compound X--CO--X wherein X is a halogen, and then optionally with compounds giving azide or succinimidyl group. The compounds are used as derivatization reagents for separation and detection purposes.Intermediates for preparation of the above defined 9-anthrylalkyl compounds wherein one R is an alkyl group are 9-anthrylalcohols with the group --CHR--(CHR).sub.n --OH, wherein one R is an alkyl group.

Abstract: The invention relates to an arrangement for actuating a slide-gate nozzle which is installed on the bottom of a casting ladle. This arrangement comprises a cylinder/piston unit which is operated by means of a pressure medium. Elements of a coupling are, in each case, assigned to the cylinder and to the stationary portion of the slide-gate, on the one hand, and to the piston rod and to the movable portion of the slide-gate of the slide-gate nozzle, on the other hand, these elements being in engagement when in the operating position. The invention embodies the combination of the following features, namely that the elements of the first coupling comprise a quarter-turn fastener, this coupling being assigned to the stationary portion of the slide-gate, and to the cylinder, and that the elements of the second coupling comprise a latching mechanism of the snap-in type, this coupling being assigned to the movable portion of the slide-gate, and to the piston rod.

Abstract: The invention relates to a slidable closure element for slide closures of metallurgical vessels, composed of a one-piece plate of heat resistant material which is engaged at its two opposite narrow edges by frame members that are drawn together by screws serving to tension them and hold them in contact with the edges of the plate.

Abstract: This invention relates to a novel toothpaste and more particularly, to a new toothpaste which includes a finely divided synthetic plastic material as a polishing agent and at least one copper compound. This toothpaste has proven effective against plaque formation on teeth but does not exhibit any of the untoward side effects of the prior art formulations such as discoloring.

Abstract: An improvement in a process for forming a refractory lining on the interior walls of the metallurgical vessel which interior walls are coaxial to the principal axis of the vessel wherein a refractory mass containing a binder is centrifugally slung onto the interior walls in a direction normal thereto while the vessel is at a standstill is disclosed. According to the invention, the refractory mass is initially shaped into balls prior to being centrifugally slung and the balls are centrifugally slung in rapid succession to form a mass jet. Also disclosed, is a device for so slinging a refractory mass on the walls of a vessel comprising a slinger head having a slinger wheel and a motor and at least one supply conduit for supplying refractory mass to be slung. The slinger wheel of the slinger head is disposed on one end of a shaft which shaft is extendable into a vessel, the slinger wheel being connected to an actuatable by a slinger motor.

Abstract: This invention relates to a novel toothpaste and more particularly, to a new toothpaste which includes a silica polishing agent and at least one copper compound. This toothpaste has proven effective against plaque formation on teeth but does not exhibit any of the side effects of the prior art formulations such as discoloring.

Abstract: An improvement in a process for forming a refractory lining on the interior walls of the metallurgical vessel which interior walls are coaxial to the principal axis of the vessel wherein a refractory mass containing a binder is centrifugally slung onto the interior walls in a direction normal thereto while the vessel is at a standstill is disclosed. According to the invention, the refractory mass is initially shaped into balls prior to being centrifugally slung and the balls are centrifugally slung in rapid succession to form a mass jet. Also disclosed, is a device for so slinging a refractory mass on the walls of a vessel comprising a slinger head having a slinger wheel and a motor and at least one supply conduit for supplying refractory mass to be slung. The slinger wheel of the slinger head is disposed on one end of a shaft which shaft is extendable into a vessel, the slinger wheel being connected to an actuatable by a slinger motor.

Abstract: A head or slide plate for a molten-metal slide gate is formed by a refractory plate having an opening and a refractory ring positioned in the opening, with a ring of tar between the peripheries of the opening and refractory ring and which is isolated from the plate surfaces excepting for a passage filled with a porous refractory and through which the vaporized tar migrates to one of the slide surfaces when the plate and ring are heated by contact with the molten metal.

Abstract: A toothpaste composition contains an alkali metal aluminum silicate zeolite as the polishing agent base. The composition is non-corrosive to aluminum containers, polishes well without excessive abrasion and is compatible with dental fluorine compounds. A particularly suitable polishing agent is Zeolite A having the empirical formula Na.sub.12 (AlO.sub.2).sub.12.(SiO.sub.2).sub.12.27H.sub.2 O.

Abstract: The corrosive effect of toothpaste on aluminum is prevented by incorporating in the toothpaste about 0.05% to about 5% by weight of a synthetic alkali metal aluminum silicate zeolite. Toothpaste containing a zeolite of the empirical formula Na.sub.12 (AlO.sub.2).sub.12.(SiO.sub.2).sub.12.27H.sub.2 O is particularly useful.

Abstract: An axial thrust bearing for a roller drill bit comprising a pair of one piece diamonds mounted in the axial end face of the journal and the interior of the cutting roller supported for rotation on the journal. Each diamond is mounted on a cup-shaped casing made of a softer metal than the journal and cutting roller. Preferably the confronting engaging bearing surfaces of the diamonds are spherical.

Abstract: A one-piece intermediate member for separating from each other anti-friction bodies of an anti-friction bearing. This intermediate member has a mantle surface adapted to the race cross section of the respective anti-friction bearing for which the intermediate member is intended. The intermediate member is by a dividing wall or partition extending substantially perpendicular to the axis of the intermediate member divided into two sections forming an image to each other. Each side of the dividing wall, which latter may e.g. be of synthetic material such as plastics, is provided with a reinforcement, e.g. in the form of a ring or a polygon, and this reinforcement is connected by webs to the mantle and has ribs extending from the reinforcement in the direction toward the axis of the intermediate member with the inner ends of the ribs being spaced from each other.

Abstract: A process for removing dust produced in the lining of casting ladles wherein a slinging mass is slung between the inner walls of the ladle and an opposing template whereby a free space is defined between the ladle wall and the template which free space contains dust which process involves sucking the dust in the free space from a point near the upper edge of the template into a region behind the template; an apparatus for performing such a process comprising a template, a suction conduit inside said template having an inlet and an outlet, the inlet being in fluid communication with particles disposed near the upper edge of said template, the suction conduit including filtering means for filtering out entrained particles from air sucked therethrough, the filtering means including means for collecting filtered particles, the outlet end of the suction conduit includes means for sucking air therethrough.