Patent GB-677301-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G19/28
Filed: 1950-06-22
Abstract: 677,301. Endless conveyers. COWLISHAW WALKER & CO., Ltd., and SEED, E. C. June 22, 1950. No. 15652/50. Class 78 (i). A conveyer of the kind comprising upper and lower sections arranged in superposed pairs tc form a unit, a number of said units being placed end-to-end and detachably fastened together, and an endless conveying member, such as a scraper chain or belt, moving along the upper sections to carry material away and being returned along the lower sections, is characterised in that one end of each lower section of each unit overlies the end of the lower section of the next adjacent unit and the upper section of said adjacent unit overlies the end of the upper section of said first mentioned unit, and manually adjustable means is provided to fasten the sections of said adjacent unit together against movement apart in an upward and downward direction normal to the longitudinal direction of the conveyer and against relative sideways and lengthwise movement, and in that further means is provided to connect the end of a section of said first mentioned unit to the end of the section of the adjacent unit against which it lies, thus serving to hold the units against separation in the longitudinal direction of the conveyer. In the embodiment shown, wherein a mine conveyer is built up of units each comprising sections 11, 12, the section 11. at one end is provided on each side with a pair of blocks 21 secured to the under-surface of the flanges 15 and accommodating between them a bolt 22 which may be moved by a handle 23 from a forward position shown in chain-dotted lines to a retracted position shown in full lines. These blocks constitute pairs of shoulders adapted to be received between pairs of brackets 26, 27 carried by flanges 19 on the lower section, whereby the upper and lower sections may be secured together by pushing bolts 22 into holes 28 in the brackets 26. Each bolt handle 23 co-operates with a plate 24 having two recesses 25, corresponding respectively to the retracted and forward positions of the bolt, the handle being held against inadvertent movement when it enters a recess 25. A bar 52 secured between the blocks 21 prevents the handle rotating to an inaccessible position. One end of each section 12 has a butt-strap 29 having flanges 30 carrying pins 31 adapted to engage in slots 32 in the flanges 19 of an adjacent section 12. Each section 11 carries a butt-strap 33 and an angle 34 secured to each channel member 14. To assemble the units, a section 12 of one unit is placed upon the butt-strap 29 on an adjoining section 12 so that the pins 31 on the latter section project through the slots 32 on the first-mentioned section 12. An upper section 11 is then superposed on this first-mentioned section 12 so that the blocks 21 lie between the brackets 26, 27 and the angles 34 rest on the flanges 19 on the lower section. The bolts 22 are then shot to connect these sections together. A section 11 is then placed on the adjoining section 12 so that its end carrying the blocks 21 lies on the butt strap 33 of the first-mentioned unit with these blocks lying between the brackets 26, 27 and the angles 34 lying on the flanges 19 of the adjoining section 12. These sections are then secured to one another by shooting the bolts 22. The conveyer is moved sideways by double-acting pneumatic or hydraulic jacks 38, Fig. 3, the movable member 39 of the jack being connected at 40 to a bracket 41 bolted at 42 to the flange 20 of a section 12. A coal-cutting machine may be supported on the conveyer by a sledge 44 Fig. 2, slidable on the flanges 15. A machine for loading coal on the conveyer after it has been cut may be similarly mounted on the flanges 15 and, to prevent coal which is being loaded on to the conveyer at one side from falling off at the opposite side, spill plates 46 may be provided along the conveyer, being carried by arms 47 bolted to the flanges 19 of the sections 12. Instead of mounting the loading machine on the flanges 15, it may rest on the mine floor and be guided by the sides 16, 20 of the conveyer units.