Abstract: A jigger for the processing of minerals such as coal, consisting of two traveling troughs, the upper trough being equipped with a sieve and closed from below by a continuous flexible membrane, the lower trough interrelating with the diaphragm of the upper trough, acting as a piston and giving water vertical pulsation. The troughs are linked to each other via double-arm levers, hinged in the supports. The double-arm levers together with the troughs form a system of hinged parallelograms, providing uniform distribution of pulsations along the whole capacity of the upper trough that produces conditions for the intensification of the jigging process. Besides this intensification, decreasing of energy-consumption and simplicity of design having been achieved. A laboratory sample was made and its testing showed good technological results and confirmed the reliability of a unit simple in manufacturing, operating and maintenance.

Abstract: A separator pan (18) is set into a rearwardly leaning position (FIG. 6). A lower portion of the pan (18) is positioned inside a bucket (10). The pan (18) is mounted for rotation on a frame (20). The frame (20) includes hooks (42) that hook onto the upper rim (32) of the bucket (10). The support leg or brace (82) projects rearwardly from a lower portion of the frame (20) to contact the sidewall (28) of the bucket (10), and establish a lean angle of the pan (18). The pan (18) is detachable from the frame (20) and the pan (18) and the frame (20) are sized to be placed inside of the bucket (10) so that the bucket (10) can be used for transporting and storing the assembly when it is not being used.

Abstract: A separator pan (10) is set into a rearwardly leaning position (FIG. 4 ). A lower portion of the pan sidewall (28) slopes downwardly as it extends outwardly from the pan bottom (12). A spiral rib (32), inside of the pan (10) slopes upwardly as it extends axially outwardly from the interior of the pan (10). Pan (10) is rotated in a direction causing the spiral rib (32) to coil inwardly. Large particles of gold ore, introduced into the pan (10), gravitate out from the pan, owing to the sloping nature of the lower portion of pan sidewall (28). Smaller particles, including small particles of gold, are trapped between spiral rib (32) and sidewall (28) and bottom wall (12) of pan (10). As the pan (10) rotates, these small particles are moved inwardly and into a hub cup (14).

Abstract: A separator pan (10) is set into a rearwardly leaning ng position (FIG. 4). A lower portion of the pan sidewall (28) slopes downwardly as it extends outwardly from the pan bottom (12). A spiral rib (32), inside of the pan (10) slopes upwardly as it extends axially outwardly from the interior of the pan (10). Pan (10) is rotated in a direction causing the spiral rib (32) to coil inwardly. Large particles of gold ore, introduced into the pan (10), gravitate out from the pan, owing to the sloping nature of the lower portion of pan sidewall (28). Smaller particles, including small particles of gold, are trapped between spiral rib (32) and sidewall (28) and bottom wall (10) of pan (10). As the pan (10) rotates, these small particles are moved inwardly and into a hub cup (14).

Abstract: An apparatus for providing a fluidized bed to effect the separation of a mixture of articles having at least a first density and a second density that is greater than the first density into separate groups. The apparatus includes an inclined trough which is supplied at an input end with either a fluidization medium, such as sand, or a mixture of articles from which a fluidized bed is formed by forcing gas upwardly through the bottom of the trough and through the fluidization medium or the mixture. In the case where a fluidization medium such as sand is used, the mixture of articles is introduced into the fluidized bed medium so as to be entrained therewith to effect separation as the articles travel in the direction of flow of the fluidized bed medium. Vertical oscillatory movement is imparted to the inclined trough to improve the separation and layering where the mixture of articles is fluidized, or to improve the density uniformity where a fluidization medium such as sand is fluidized as the bed.

Abstract: A method and apparatus for sorting a mixture of particles containing a first group of particles of substantially uniform size and density and a second group of particles of substantially the same size as the particles of the first group and of different density than the particles of the first group. The noted mixture is supplied to a reservoir in which it is fluidized so that the particles gather into different levels in accordance with their density. The particles are then removed from the reservoir at their different levels.

Abstract: A sorting machine for grained products comprises at least one sorting board which is inclined relative to horizontal and vertical planes and reciprocatingly vibratable in a plane and direction suitable for sorting, a unit for supplying a product to be sorted and arranged in one region of the sorting board and a unit for separating and withdrawing a sorted product and located in another region of the sorting board, the sorting board with the supplying unit and the separating and withdrawing unit together forming a sorting unit, two imbalance drives which operate in opposite directions and cooperate with the sorting unit for driving the latter in vibration, a base frame, a unit forming at least three supporting points on which the sorting unit is supported in a vibration-damping manner freely movably so as to provide inclination of the sorting unit relative to horizontal and vertical planes, and a unit for additionally adjusting the inclination relative to the horizontal and vertical planes.

Abstract: A playground slide includes a hollow vertical column consisting of substantially identical hollow hubs which register with each other to define the column. The topmost and lowermost hubs are urged toward each other by a resilient device, anchored to a base. The device is typically a spring, running internally of the vertical column. This compresses the vertical column, ensures stiffness, and allows for expansion and contraction. A helical slideway encircles the column, consisting of slide segments that are fastened to each other and to the various hubs.

Abstract: Mixed scrap metal pieces 6 are sorted in a fluidised hindered settler containing sand, through which the pieces settle at a differential rate. The sand is fluidised by air from 20 and vibration-driven around a circular trough 2. A depthwise partition 14a sorts the pieces according to settling rate, whereafter they are removed up separate ramps 14 and 16. The sand is levelled preparatory to receiving the pieces 6, and only afterwards is it fluidised.

Abstract: A gravity separator for separating particulate material deposited onto a perforate separator deck is disclosed. The rate of separation is controlled by varying end raise and side tilt adjustments. These adjustments are made hydraulically and are remotely controlled. These adjustments are carried out while the machine is operating to avoid down-time. The feeder is located above the highest point of the separator deck to provide for faster separation. A blender assembly located at the high side of the deck accepts heavy material and conveys it to a discharge hopper. This provides for faster separation and allows the length of the deck to be decreased. A counterbalance is agitated in a manner to oppose and negate the motion of the deck. An air supply assembly with multiple fans is provided to direct a certain volume of air to separate areas of the separator deck.

Abstract: A jigging machine, particularly a movable sieve jigging machine, for the preseparation of deads from valuable material comprises an oscillatory jig bed in the housing filled with separating fluid and comprises deads and valuable material discharge devices located therein, as well as an oscillatory drive for the jig bed. The jigging machine is suitable for underground mining operations in that the outer dimensions of the jigging machine, with respect to the height and width theeof, are designed smaller than the tunnel cross-section of an underground mining operation. A relatively low structure is achieved by designing the housing as a flat trough towards a deads discharge end with the deads discharge being provided as a rising conveyor parallel to the bottom of the trough. Advantageously it is achieved that the quantity of deads to be conveyed is reduced and a considerable saving is provided in terms of energy and expense.

Abstract: In the case of an apparatus for cleaning grits, which has a plurality of superimposed screen layers, which can be vibrated by means of at least one unbalance exciter and with an inlet or outlet for the product inlet or screen discharge arranged at one end, collecting means with adjustable setting flaps for the screenings, as well as an air circulation through the screen layers over an air distribution chamber in a suction collecting channel adjustable by means of adjusting flaps, it is provided that the apparatus is constructed as a stand with a stand head, a stand base and a vertical intermediate support connecting said two parts, the screen layers being constructed as a dust box and being vibratably supported in the vicinity of the stand base, the stand top being formed by the upper air distribution chamber.

Abstract: A continuous concentrator for high volume specific gravity separation of materials, particularly constituent materials of indigenous ores, in a counter-current process, the concentrator includes a continuous loop conveyor constructed with a conveyor bed on which are mounted periodic transverse riffles, and raised sidewalls for containing ore materials deposited on the bed from an ore feed; and, a bar sweeper constructed with a pair of continuous loop, link drives interconnected by transverse sweeper bars adjustably positioned over the conveyor bed, the bar sweeper being operated with the sweeper bars moving proximate the top of the conveyor riffles in an opposite direction from the movement of the conveyor, the rate of movement of the bar sweeper and conveyor being independently controlled for processing ores of different composition or consistency, wherein heavier metals and minerals are conveyed in one direction on the conveyor bed to one end of the conveyor for discharge and collection, and the lighter met

Abstract: The invention relates to a percussion jig in which the carrier for material to be separated is freely suspended in the region of its centroidal axis on the piston rod of a hydraulic drive cylinder. This results in a particularly simple construction subject to little wear.

Abstract: A material separating system is disclosed having one or more pendantly supported tables with head motion devices for imparting reciprocatory motion to each of those tables to separate material mixtures supplied to the tables into at least two fractions in accordance with the specific gravity of the materials so that one fraction includes particles essentially all of which have specific gravities above some predetermined value while the other fraction particles are substantially all below that predetermined specific gravity value. Associated with each vibrator and the table or tables reciprocated by that vibrator is a remotely actuable device for modifying the attitude of the table or tables and therefor also the predetermined specific gravity value.

Abstract: A precious metal recovery bowl includes a steep peripheral wall, a floor having an upward and inward shape at a relatively low angle, a centralized frusto-conical member having a moderately steep slope and a top central ring with a vertical outer wall terminating in a circular lip and encompassing a central, vertical, overflow channel. A tangential, horizontal nozzle extending through the peripheral wall is connected to a hose which supplies water to the bowl so as to separate a pre-screened mixture of tailings and precious metals located in the bowl.

Abstract: A placer mining sluice for separating relatively heavy particulate valuable materials from relatively light waste material. The mining sluice includes an inverted generally V-shaped grizzly screen having first and second sides which slope downwardly and outwardly from a longitudinal axis of the screen. First and second panels are positioned at opposed ends of the screen to close off the ends of the screen. A deflector pan having opposed first and second ends is positioned beneath the grizzly screen to extend between the first and second screen sides and between the first and second screen ends. The first end of the pan contacts the first panel. A tray is positioned beneath the deflector pan and screen at an angle relative to the horizontal with the uppermost tray end beneath the second end of the deflector pan. Material passing through the screen passes over the deflector pan second end onto the uppermost end of the tray.

Abstract: A riffled ore concentrating table of the reciprocating type is connected to a table support by ball bearings. The table support has one of its edges pivotably connected to one edge of a base member and the other of its edges supported by the other edge of the base member in a manner such that the elevation of one edge of the table may be adjusted with respect to the other edge of the table.

Abstract: The invention relates to a vibrating table allowing very fine particles to be separated with output rates greater than for known tables.The table, supplied with pulp has a series of longitudinal grooves having a decreasing depth. The table mounted with the aid of spring blades on a chassis having an adjustable inclination by means of screws. The positions of the weights of a box are controlled by the group motor having a variable speed, are angularly and radially adjustable. The adjusting of the frequency during the operation allows a maximum output.The invention is applicable to the gravimetric separation of all particles.