Abstract: A thrust bearing comprises a support and a stationary stand, the support being mounted on the stand for pivoting about an axis extending radially with respect to a cylinder rotating about an axis and comprising a ring and bearings supporting the ring for rotation of the cylinder. The ring has two plane faces, one face on each side of the pivoting axis of the support, and bearings are mounted on the pivotal support in a gliding relationship along at least one of the plane faces of the ring.

Abstract: In a jaw crusher, pneumatically assisted systems for maintaining the jaw-plate of the crusher on its carrier and for setting the position of the carrier and the jaw-plate mounted thereon.

Abstract: An installation for drying a liquid-containing particulate product comprises a supporting frame, a centrifugal separator removably mounted thereon and a large receptacle for the particles ejected from a discharge end of the separator basket supported on the supporting frame. The receptacle has a vertical wall defining an opening and the centrifugal separator is mounted for rotation about a horizontal axis and is arranged with the discharge end of the basket facing the opening in the vertical wall and extending into the receptacle whereby the particles are ejected into the receptacle upon rotation of the basket, the opening having a diameter slightly in excess of the diameter of the discharge end of the basket. The separator may thus be horizontally moved for placing it in position with the discharge end extending into the receptacle and for removing it without dismounting the receptacle.

Abstract: A self-propelled apparatus for cleaning beets comprises a longitudinally extending frame carrying a hopper for receiving beets to be cleaned which is mounted on a raised platform on the frame and is provided with a conveyor for delivering beets to a screen for scraping away the dirt from the beets, said screen extending longitudinally relative to the frame, and a conveyor for discharging the dirt scraped away from the beets which extends longitudinally beneath the screen and the hopper, the arrangement being such that, in use, the cleaned beets and the dirt are discharged at opposite ends of the frame.

Abstract: A heat exchanger comprises an array of tubes, a perforated end plate defining a plurality of holes, a support sleeve in each hole for holding an end of a respective tube in a respective hole, each support sleeve fitting the respective hole, the exterior and interior surface of the support sleeve each defining a groove, a toroidal gasket in each groove, and a clamping portion on each support sleeve. The clamping portion is affixed to the outer face of the perforated end plate and has an end projecting beyond the end of the respective tube held in the support sleeve, and has an inwardly extending abutment at the projecting end for limiting any movement of the tube beyond the abutment.

Abstract: Process, centrifuge and installation for producing crystallization seeds, as for the sugar industry. A suspension of crystals produced from the seeded solution is subjected to a scheme of centrifugal separations whereby seeds falling within a predetermined size range are obtained for seeding the solution.

Abstract: In a rotary heat exchanger, two groups of tubes are concentrically arranged about a drive shaft and the tubes have ports at their ends which are in communication with inlet and discharge chambers to which respective streams of gas are delivered so that two separate streams of gas may be circulated through the tubes. A solid granular material is supplied into the tubes of one group at one end and, near the other end, the tubes of the first and second groups are interconnected for passing the material from one group to the other.

Abstract: A screen for a centrifuge basket is comprised of a frusto-conical sheet consisting of several sectors defining a multiplicity of apertures. The disposition of the apertures is the same for all screen sheet sectors. The screen sheet is divided into successive zones defined by concentric circles extending in planes parallel to the large and small bases of the frusto-conical sheet, and the apertures in the successive zones differ from each other. The apertures in the first zone adjacent the small base are round holes defining a small percentage of apertured area in the first zone. The apertures in the succeeding zones are slits inclined with respect to a generatrix of the respective sector. The angle of inclination of the slits grows from zone to zone towards the large base and all the slits in the same zone and sector have the same inclination.

Abstract: A mechanism for controlling the displacement of a front wall of a continuous casting mold with respect to the edges of the lateral mold walls and for pressing the front wall tightly thereagainst comprises a threaded rod extending perpendicularly to the front wall and operable to displace it, a spring assembly arranged to press against the front wall, and a hydraulic jack arranged between the threaded rod and the front wall for compressing the spring assembly, the jack comprising a hydraulic fluid delivery conduit for supplying hydraulic fluid thereto, and the threaded rod being arranged to maintain the spring assembly compressed when the supply of hydraulic fluid to the jack is discontinued.

Abstract: Carbon electrodes are manufactured in a mold which is integral with a vibrating table and whose open top is closed by a cover resting on a pasty mass in the mold. The vibrating assembly consisting of the table, mold and mass is subjected to a frequency of vibrations which is 1.1 to 1.6 times the frequency of natural vibrations of the assembly and the cover preferably applies a static pressure of about 0.5 bars on the mass.

Abstract: Clinker coming from a rotary tubular kiln is cooled by moving a layer of the clinker of a grate in a cooler from a hot zone to a successively cooler zone by introducing fresh air in the cooler zone and passing in countercurrently through the layer of the clinker several times whereby a heat exchange takes place between the air and the clinker, the clinker becoming successively cooler and the air successively hotter. The air is introduced from the cooler zone sequentially into two sections of the hot zone, air at a temperature above 1000.degree. C is removed from a first section in the hot zone, and air at a lower temperature is conducted from the second section in the hot zone into the kiln where it is used as secondary heating air for the raw material therein.

Abstract: The rotary tube of a crusher is mounted for rotation on a support having a support surface in gliding contact with a circumferentially extending, circular face portion of the crusher tube. The support is supported on a ball-and-socket joint in turn supported on a base, the ball of the joint being affixed to the support and the socket being affixed to the base. A cheek plate extends from each side of the support and encloses the joint and a portion of the base so as to restrain lateral movement of the support.

Abstract: An internally cooled roll comprises a cylindrical body having two trunnions and an axially extending internal chamber. A coaxial cylindrical lining is countersunk in the chamber by casting and a coaxial hollow cylinder is arranged within the lining. The lining and cylinder define therebetween a passage for circulating a cooling fluid therethrough. Two conduits respectively supply and remove the cooling fluid to and from the passage, one of the conduits being connected with the lining.

Abstract: Cooling tubes are secured to a tubular rotary kiln in circumferentially spaced relationship for movement with the kiln about the kiln axis. A longitudinally terminal part of each tube is connected with an axial end portion of the kiln by a radial duct so that the terminal tube part receives hot, processed material from the kiln by gravity when the tube is located below the kiln. A deflector in the tube deflects previously received material into the path of the hot material dropping from the duct into the tube when the tube approaches its position below the kiln, thereby protecting the inner tube wall against the impact of the hot, discharged material, and preventing rapid wear of the refractory tube lining.

Abstract: A dummy or starter bar head used in the continuous casting of molten metal has an elongated cavity along its upper small face whose cross section increases inwardly from the small face. This cavity is formed partly in the head and partly in an insert removably mounted on the head, the plane of separation between the portion of the cavity defined by the head and that defined by the insert being so disposed that cast solidified metal formed in the cavity may be lifted out of the portion of the cavity after the insert has been removed.

Abstract: In a continuous ingot casting installation, a table of ingot support rollers is arranged in the horizontal cutting zone. This table is arranged between an upstream and a downstream set of ingot support rollers and is reciprocably displaceable therebetween in the direction of the path of movement of the continuously cast ingot and parallel to that of the displacement of a cutting machine. The table is displaced automatically in a direction opposite to that of the cutting machine each time the oxygen torch of the machine approaches one of the rollers of the table and returned to its initial position. In this way, billets are cut from the cast ingot.

Abstract: A sugar cane mill comprises two lower cylinders mounted on respective support beds and an upper cylinder carried by two bearing connected to respective cover members pivotally mounted on a respective support bed. Elastically deformable blocks connect each bearing to a respective cover member to permit movements of the upper cylinder with respect to the cover members in a direction approximately perpendicular to a plane defined by the axis of the upper cylinder and the resultant of the pressure forces during normal operation of the mill. The blocks extend on either side of the plane.

Abstract: An internally cooled roll comprises a cylindrical body having two coaxial trunnions. A longitudinal conduit extends in the interior of the body in the direction of its axis for circulating a cooling fluid therethrough, and a tubular conduit is disposed in the longitudinal conduit. The cooling fluid is supplied to one of the conduits and removed from the other conduit, either fluid supply or removal being obtained by a fluid collector element connected to the tubular conduit and passing through one of the trunnions.

Abstract: An installation for the manufacture of cement in a rotary tubular kiln comprises a combustion chamber upstream of the kiln, two preheaters for the raw material, one of the preheaters receiving hot gases from the kiln and the other preheater receiving combustion gases from the combustion chamber, and a cooler receiving the clinker from the kiln. One of the preheaters is a multi-stage preheater and all of the raw material is introduced into the one preheater one of whose stages is arranged to divide the raw material into two fractions. One of the raw material fractions is passed sequentially into the other preheater and into the combustion chamber while the other fraction is passed sequentially into the other stages of the one preheater and into the combustion chamber.

Abstract: An internally cooled roller particularly useful for continuous casting of metals comprises a roller body and a sleeve mounted on the circumferential surface of the roller body, a conduit for circulating a cooling fluid being defined between the roller body and sleeve. A flange is mounted on one end face of the roller body. The flange has a first tubular member projecting between the sleeve and a reduced diameter end of the roller body surface, a first annular seat being defined by the first tubular member, the sleeve and the roller body surface, and a second tubular member concentrically surrounding the first member and defining therewith a second annular seat. An end of the sleeve projects into the second annular seat and a fluid-tight element is mounted in the first annular seat under compression, the sleeve end being gripped to prevent its radial expansion and thus loosening of the fluid-tight element in the first seat.