Abstract: A labyrinth port structure minimizes entrapment of fine particulates in the port piping of a rotary kiln and maintains a self-flushing operation which permits turbulent mixing resulting in particulate removal from port cavities.

Abstract: An arrangement for mounting a cooling cowl on the discharge end of a rotary kiln which allows for radial and axial differential expansion between kiln and cowl. The cowl is mounted on the kiln contiguous the kiln discharge end, with the cowl being positioned radially outwardly of the outer peripheral surface of the kiln to define an annulus between the inner peripheral surface of the cowl and the outer peripheral surface of the kiln through which cooling air can flow. A radially outer set of end castings is supported by the kiln at the discharge end and defines an axial end closure for the annulus. A radially inner set of end castings is supported by the kiln at the discharge end and retains the "nose brick" of the kiln lining. Both the radially outer and the radially inner end castings are supported by the kiln so as to be structurally independent of the cowl.

Abstract: Rolls 9, 10 for a compacting mill 5 by which finely divided agglomerative material 6 is compacted into a sheet 7 produce a pattern of slots 23 in the opposite surfaces of the sheet 7 whereby the sheet is encouraged to fracture into tablet-like bodies 8 of uniform size and shape. The slots 23 are defined by uniformly spaced ridges 21 on the rolls 9, 10, the ridges 21 on one roll 9 or 10 extending transversely to those on the other roll 10 or 9. Preferably the ridges 21 extend circumferentially on one roll 9 and axially on the other roll 10. A form for the ridges 21 is described that enables their easy and complete withdrawal from the slots 23 in the sheet 7 and encourages the sheet 7 to fracture on the medial plane of every slot 23.

Abstract: A transmission brake with a lubricating and cooling means whereby a portion of the actuating fluid is used to cool the transmission brake and lubricate the brake disks while the transmission brake is operated.

Abstract: A hydraulic turbine wicket gate operating assembly including an eccentric pin having a separate hexagonal spacer attached provides a novel means for turning the eccentric pin and fixing it from rotation beyond a desired point. With the arrangement, a single gate operating ring can be utilized to permit all of the gates to move in unison and to provide for the simultaneous closing of each gate against each adjacent gate.

Abstract: A seal for use in sealing an annular opening between a stationary member and a rotating cylinder telescopically arranged in the stationary member, the seal comprising an annular ring member circumscribing the cylinder adjacent the stationary member and closing the annular opening. The seal comprises weighting means extending axially away from a back side of the ring member to provide a counterweighting effect which causes a tilting of the ring member, whereby said tilting and the rotation of the cylinder moves the ring member into engagement with the stationary member to substantially seal the annular opening, all in accordance with the teaching of U.S. Pat. No. 3,042,389. In accordance with the present invention, the annular ring member is divided into a plurality of circumferentially extending segments in which adjacent segments are pivotally connected to each other to permit articulation of the segments to accommodate "out-of-round" portions of the rotating cylinder.

Abstract: An arrangement for storing and distributing a fluid on board a rotary reactor such as a rotary kiln. The application discloses a rotary reduction kiln for reducing a metallic oxide such as iron oxide to a lower state of oxidation. A liquid hydrocarbon is used as a reductant in the reduction process for the metallic oxide. The kiln includes a cylindrical chamber adapted to receive the charge of material which is being subjected to the reduction process. A plurality of rows of nozzles are mounted on and supported by the kiln in hydraulic communication with the interior of the reduction chamber. Flow of hydrocarbon liquid to each row of nozzles is controlled by a corresponding flow control valve in accordance with the position of the corresponding row of nozzles relative to the charge of material in the kiln. A plurality of hydro-pneumatic accumulators having the hydraulic sections thereof connected to a common manifold are mounted on and rotatable with the kiln.

Abstract: Flow control valves are mounted with corresponding axial rows of nozzles about the periphery of a rotary kiln. A metering cylinder is mounted on the kiln and rotates therewith. A piston member is moveable in the metering cylinder in alternately opposite directions to deliver a predetermined measured volume of a liquid hydrocarbon such as fuel oil from said cylinder equally in each direction of movement of said piston member. A first hydraulic circuit interconnects each of said liquid flow control valves with a liquid fuel supply and with one end of said metering cylinder on one side of said piston member, and a second hydraulic circuit interconnects each of said liquid flow control valves with an opposite end of said metering cylinder on an opposite side of said piston member and with a plurality of nozzles in the row of nozzles corresponding to the given flow control valve.

Abstract: An adjustable wear ring between a pump impeller and the pump casing is provided which is rotatable relative to the casing for effecting an adjustment of the wear ring with respect to the impeller to restrict leakage between the high pressure and low pressure chambers of the pump. Spiral groove formed on the periphery of the wear ring right engage with an action pin extending radially from the casing bore to effect controlled axial movement of the wear ring. A pin is inserted through the wear ring to engage the bore of the casing to lock the wear ring in adjusted position.

Abstract: In a moving matrix magnetic separator in which a matrix device moves relative to a processing device and a seal assembly seals a longitudinal section of the matrix device to an associated processing device, the seal assembly including a sealing surface on one of the devices and a seal on the other, the improvement comprising said seal including a base portion extending generally longitudinally in the direction of motion of the matrix device; first and second salient, resilient lip portions extending from the base portion toward an associated sealing surface in the gap between the matrix device and the processing device, and extending generally longitudinally to the direction of motion of the matrix device and spaced from each other transversely to the direction of motion of the matrix device and forming a channel therebetween; a pressurized purge fluid chamber formed by the channel and the associated sealing surface; and means for supplying purging fluid to the purge fluid chamber formed by the channel and li

Abstract: An automatic height control for a gathering reel used with an agricultural combine of the type in which a floating cutter assembly and a gathering reel are carried by the header of the combine forwardly of the header. The control system of the invention adjusts the height of the gathering reel in closely tracking relation with vertical movement of the floating cutter assembly to thereby avoid damage to the gathering reel and to the cutter assembly due to interference between the cutter assembly and the gathering reel. The control system of the invention may be used in conjunction with a prior art header height control arrangement which responds to a predetermined vertical movement of the floating cutter assembly to vertically adjust the header and thus to vertically adjust the gathering reel carried by the header.

Abstract: Bushing and sleeve assembly are attached in an alignment fixture and placed in the stay ring-discharge ring. An internal pilot bearing is placed in the headcover to accommodate an aligning bar which is lowered through the headcover and pilot. The lower end of the aligning bar is engaged with the aligning fixture and the pilot can then be engaged with the headcover to automatically align the bushing and sleeve assembly with the two headcover bushings at the upper bearing pilot and the internal intermediate pilot.

Abstract: An apparatus for use in machining and statically balancing a large and heavy workpiece such as the runner of a hydraulic turbine. The apparatus includes a vertical center support column on the upper end of which is mounted a rotatable turntable. The workpiece which is to be machined and statically balanced is suitably clamped to and rotates with the turntable, the workpiece extending radially beyond the turntable so that as the turntable is rotated the workpiece is moved past a machining tool which is suitably supported along the path of rotary movement of the workpiece. The turntable is detachably secured to a composite member which comprises a bearing, such as a roller bearing, integral with a gear, such as an internal ring gear, the composite member being in underlying relation to the turntable.

Abstract: To prepare nickel laterite ore for selective reduction of its nonferrous metal oxides, it is comminuted (preferably to 85% minus 200 mesh) and is mixed with comminuted (preferably 100% minus 65 mesh) high volatile, high ash waste coal and a non-gaseous sulfur material. Carbon content of the coal is 50% to 150% of the amount of carbon needed for stoichiometric complete reduction of nonferrous metal oxides in the ore and partial reduction of its iron oxide content. The sulfur content of the sulfur material is such that, together with the sulfur content of the coal, the weight of sulfur is 1% to 1.5% of the weight of the ore. The mixture, preferably pelletized with water, is heated out of contact with air to bring it to 550.degree. C. (requiring 20 to 25 minutes) and is then passed to an aquatic quench. Volatiles in the coal provide reducing gas, and the ash content facilitates wet grinding after quench and provides a good filter bed for subsequent leaching to recover nonferrous metal values.

Abstract: A stone guard for use with a harvester or combine of the type having a rotatable threshing cylinder and a concave lying contiguous and radially outwardly of the threshing cylinder whereby grain is threshed from a crop fed by a feeder means to the interspace between the threshing cylinder and the concave. A stone guard door is interposed in the crop flow path between the feeder means and the interspace between the threshing cylinder and the concave. The stone guard door comprises a main body portion which is pivotally connected to stationary combine structure contiguous the discharge end of the feeder means, and a lip portion hingedly connected to the main body portion. A detent means carried by the stone guard door normally maintains the lip poriton rigid with respect to the main body portion. The lip portion normally rests on the forward edge of the concave when the detent means is engaged, whereby to maintain the stone guard door in a closed position.

Abstract: An adjustable lift link on a three-point hitch having a self-locking handle and retainer for selectively adjusting and holding the adjustment of the lift link. A stop on the link selectively provides the float or fixed length positions of the link of the three-point hitch.

Abstract: A housing in which a locking tube is contained is threaded into a suitable threaded opening in the valve casing with the opening communicating with the interior of the casing adjacent the seal piston; the locking tube is threaded within the housing and is engageable with the seal piston to lock the seal piston against the valve insuring positive sealing engagement; a detector push-rod is axially movable within the locking tube and is spring loaded against the seal piston; when sealing has been effected, the push-rod effects the actuation of a limit switch to initiate the operation of a signal device.

Abstract: A hydraulic cylinder is provided with pistons to provide both rotary and a linear motions; utilization of a built in check valve traps fluid pressure to sustain piston in a desired operating position.

Abstract: A foam seal and insulator for sealing a compartment in the control console and attenuating sound in the compartment which contains a plurality of actuating levers for controlling the operation of the vehicle with actuating cables extending through the insulator to control the operation of the vehicle.

Abstract: A vehicle transmission shift lever remotely operating a shifting member on a transmission for shifting the transmission and an interlock for locking the transmission in its shifted position.