Patent GB-691673-A (GB)
Title: Improvements in or relating to conveyors for grain and like materials
IPC: B65G37/00
Filed: 1949-02-15
Abstract: 691,673. Endless conveyers. REDLER, A. May 2, 1950. [Feb. 15, 1949 ; March 22, 1949] Nos. 4153/49 and 7806/49. Class 78 (i). An en masse conveyer comprises a trunk-like conduit having a portion adapted to receive material and a discharge portion, and a plurality of spaced, endless driven tension members adapted to engage and transport material within said conduit and between said portions and adapted to be in close proximity to at least the internal sides of the conduit, one portion of each tension member being within the conduit and the remainder exteriorly thereof, the arrangement being such that pressure is generated within the material being conveyed, such pressure being utilized to enable discharge of the material under pressure or/and self-feeding of the conveyer. In one form, Fig. 1e, the walls 1 of an en-masse conveyer casing are enclosed at their lower part within a casing 19 and are apertured at 24 so that a pair of driving sprockets 10 project into the conveying space. A pair of endless flight conveyer chains 6 (only one of which is shown in Fig. 1) are mounted on sprockets 10 and lower sprockets 11 so that the inner runs 7 of the respective chains convey upwardly within the conveyer casing and closely adjacent the walls 1, while the outer runs move downwardly between walls 1 and the casing 19. Material enters the elevator at 2, without the necessity for a boot, and is pushed along the continuation 4 of the conveyer casing by the pressure developed in the lower part of the casing, material being prevented from escaping through the apertures 24 by providing sealing drums 20, Fig. 6b. Each sealing drum consists of two parts one either side of the sprocket 10. Each part is hollow and has a number, e.g. two, of transverse recesses 21 in its circumference to receive the flights 8 of the conveyer chain, these flights being formed of plastic or like material moulded on extended chain pins 9. The chain in passing around the drum is accommodated as shown between the two parts and the flights enter the hollow parts thus filling the circumferential recesses so that a smooth circumference is formed against which a scraping member on the edge 25 of the aperture 24 can operate to seal the drum and clean the flights. In another form, Fig. 3a, the material is elevated from a suitable container (not shown) to a discharge shoot 27 by the two conveying chains arranged as in Fig. 1e, except that one chain 29 extends higher than the other to a position above the discharge shoot 27. A sectional conveyer, Fig. 4a, consists of a vertical section adapted to rest upon a heap of material, a feeding conveyer 37 resting horizontally on the heap, and further sections 34, 14, the sections being connected together by flexible tubes 16, 18 held in place by clips 17a, 17b. The material is passed from one pair of conveying chains 6 to another, the tubes 16, 18 acting as reservoirs between the sections. The feeding conveyer is a, similar conveyer resting on one side, which is open, and is connected pivotally by links 40 to a ring 41a rotatable on an inner ring 41b secured to the vertical section, so that it can feed material from any desired point around the conveyer base. In place of the tubes 16, 18, two sections 55, Fig. 9a, the lower being shown sideways with its driving motor 19b, may be connected by a ball and socket joint consisting of a part-spherical member 67 secured to the lower section and a hemispherical socket 65 passed over it and retained by a ring 66a which is bolted to a ring 66 on the bottom edge of the hemisphere. Material raised by the lower section enters obliquely to the axis of symmetry of the member 67 so that the material traverses a smooth bend in the ball joint at all angles between the section in a 90 degree arc in the plane shown and a 180 degree arc in the plane at right angles to that shown. The upper section is adjustably connected to a portion 62 containing its lower sprockets by means of screwed rod connections 59 to facilitate tensioning of the chains. In another form, Fig. 8, four endless double conveyer chains work on the four sides of a casing 48, the upper sprocket mountings 50 of one opposite pair being located below a discharge shoot 54 while those of the other opposite pair are located above shoot 54 at 49.