Abstract: An apparatus for screening particulate material having a base frame (11), an elevating conveyor (12), and a conveyor carrying frame (13) adjustably mounted on the base frame (11) and arranged to be capable of moving the conveyor (12) generally lengthwise to adjust the position of an upper end (16) of the end (16) of the conveyor. A sub-frame (18) is pivotally adjustably mounted on the base frame (11) via a pivot (20), and it carries a vibratory screen (17) arranged to receive material falling under gravity from the upper discharge end (16) of the conveyor (12). The sub-frame is adjustable about the pivot in order to adjust the attitude of the screen. A tail conveyor (23) is provided for discharging separate screened portions of the material. A linkage (19, 22) exists between the sub-frame (18) and the carrying frame (13) which includes a direct pivotal connection (20) between the sub-frame and the carrying frame whereby there is simultaneous lengthwise adjustment of the sub-frame.

Abstract: A foldable framework for supporting a belt conveyor which comprises a fixed sloping support frame (1,2), a movable support frame (4,5) connected to an upper end of the fixed frame with a first universal type connection (3), and a support leg (6) connected at its lower end to the fixed frame (1,2) with a second universal type connection (9) and connected at its upper end to the movable frame (4,5). A power-operated device (8) is connected between the support leg (6) and the movable frame (4,5). The power-operated device is operative to cause the movable frame (4,5) to pivot about the first universal type connection (3) between an operative conveyor-support position and a laterally displaced, inoperative position suitable for storage and transport of the framework and any conveyor supported thereby.

Abstract: There is disclosed a vibratory screening apparatus comprising a frame having a pair of opposed screen frame sides, a multi-deck screen mounted on the frame sides, and a shaft-driven vibratory mechanism coupled with the screen in order to impart vibration energy thereto so as to assist the screening operation. The vibratory mechanism comprises a pair of stubshafts associated one with each of the frame sides. A respective pair of bearing housings support each stubshaft on each frame side. The bearing housings of each respective pair are spaced apart from each other, and a respective counterweight is mounted on each stubshaft in the space between the housings. The counterweights are rotatable with the stubshaft so as to apply vibration energy to the stubshaft, and therefrom to the screen via the bearing housings and the frame sides. Drive motors are coupled with each stubshaft and are arranged to be driven in synchronism in order to apply synchronous rotary motion to each stubshaft.

Abstract: There is disclosed a screening apparatus for screening particulate material and which comprises a base frame, an elevating conveyor adjustably mounted on the base frame and arranged to convey material from a loading station at or near a lower end of the conveyor to a discharge station at an upper end of the conveyor, a sub-frame adjustably mounted on the base frame and carrying a vibratory screen for receiving material falling from the conveyor, a drive mechanism for adjusting the position of the conveyor along a guided path of movement, and a coupling arrangement which couples the conveyor and the sub-frame together in such a way that adjustment of the position of the conveyor relative to the base frame is accompanied by corresponding adjustment of the position of the sub-frame relative to the base frame so that the vibratory screen can take up any required attitude to suit particular requirements and in which it is still able readily to receive material falling from the upper end of the conveyor.

Abstract: There is disclosed an endless conveyor having a foldable framework and comprising a supporting structure (3), a tail conveyor framework (1) which is hingedly connected at one end (2) to the supporting structure (3), a head conveyor framework (6) is hingedly connected to the other end (5) of the tail conveyor framework (1), the tail and head conveyor drums (4, 7) mounted on tail and head conveyor frameworks respectively and around which an endless belt (8) is taken, and at least one supporting link (10) hingedly connected at one end (11) to the supporting structure (3) and at the other end (9) to the head conveyor framework (6) at a point adjacent to the hinged connection (5) of the tail conveyor framework (1) to the head conveyor framework (6).

Abstract: There is disclosed an endless conveyor elevator with a foldable support frame, and which has a chassi (3), a tail conveyor section (1) pivotally connected at its tail end (2) to the chassis (3) and pivotally connected at its other end (4) to the lower end of an intermediate conveyor section (5). The upper end (6) of the intermediate conveyor section (5) is pivotally connected to one end of a head conveyor section (7). An actuator (12) is coupled with the conveyor sections to move them between an inoperative folded position, as shown in FIG. 1, to an unfolded rectilinear working position shown in FIG. 2. This movement of the conveyor sections between the inoperative and working positions is achieved by the geometry of the conveyor sections and that of a link member (9) which interconnects the chassis (3) and the head conveyor section (7).