GB685301A - Apparatus for use in elevating loose material - Google Patents

Abstract

685,301. Endless conveyer elevators. BLAW KNOX, Ltd. Sept. 21, 1950. [Sept. 21, 1949; Aug. 29, 1950] Nos. 24292/49 and 21338/50. Class 78 (i). Elevating apparatus comprises an endless bucket conveyer which runs around a triangular frame swingable about a vertical mast, said frame consisting of a lower substantially horizontal side and two upwardly extending sides, at least the lower side being movable up and down, the conveyer being driven so as to move outwards away from the mast along the lower side. In one form, Fig. 1, a mast 1 is rotatable in a socket 2 mounted on a base which may be provided with wheels. A boom 3 comprising a pair of spaced channel members is pivoted at 5 to the mast and its outer endis joined to one end of an inclined member 6 whose other end is pivoted at 7 to the top of the mast. In order to tension the chain and for the purpose of raising and lowering the boom 3 the connection between boom 3 and stay 6 is adjustable along the boom and comprises a spindle on stay (i provided with a pair of rollers 10 running in the channel members and adjustable by means of a stirrup 11 on the spindle having mounted on it a screwed rod 12 threaded in a cross bar 4 joining the outer ends of the channel members. A bucket chain 14 passes over sprockets 16, 17, 18 and is of such length that the run below the boom 3 sags. A casing 6a surrounds the cunveying run along the stay 6 and is provided with a cowling 26 which collects material spilt from the buckets so providing a head of material through which the buckets have to pass, this ensuring that the buckets are filled. Casing 6 is continued downwardly beyond the mast to form a shoot 8. The conveyer is driven by a motor 19 mounted on the mast 1. In a second form, Fig. 3, a triangular framework 34, 35, 36 around which a bucket chain 39 passes is mounted on a pivot 33 for vertical swinging relative to a mast 29 which is in turn rotatable about a vertical pivot in a base 30 which may be mounted on wheels. A cowling 58 is provided corresponding to that in the first form. The chain 39 is tensioned by one of its supporting wheels 40 being mounted on a bell crank pivoted to the frame and adjustable by a screw 57. The chain driving motor is an internal combustion engine 44 mounted on the member 35. Vertical swinging of the mast is effected by a fluid pressure ram 38 connected between member 34 and the mast. A discharge shoot 61 is provided with an extension 62 rotatable about vertical tube 63 rotation being effected by a pair of ropes 66 attached to arms 67 on the extension and leading over pulleys to a pair of hand rings 69. The end of extension 62 is located in a storage hopper 65 by means of a pivoted stop 70 on the extension which can be raised by a cable 7 1 passing through the tube 63 to a hand ring 75 when it is required to feed another storage hopper to one side of the first by slewing the mast, the conveyer feeding from another part of the pile. A guide shoe 59 carried by drop links 60 guides the chain in a sagging attitude below the member 35.