Patent GB-215425-A (GB)
Title: Coal elevating and conveying apparatus
IPC: E21D9/12
Filed: 1923-02-05
Abstract: 215,425. MacEachen, R. Feb. 5, 1923. Casings for endless chain conveyers; guiding; standards, feet, and the like; suspending from overhead supports; push-plate conveyers and elevators; directing and adjustably supporting; discharging.-In a loading machine for coal, &c. the material is raised by a pair of push-plate elevators 3 mounted nn a power truck 1 to a pair of similar suspended conveyers 4 which deliver to trucks 2 and are flexible so that the material may be conveyed in a sinuous path. The push-plates 34, Fig. 3, of the elevator are mounted on extensions 33, Fig. 7, of lugs 31 on the inner links 38 of endless chains 30. The outer links 39 are connected by pins 40 to the inner links and the holes in the links are elongated to permit slight flexibility in a vertical plane. Springs 41 are placed between the heads of the pins and the links. The upper end of the plate 24 over which the pushplates move is supported by telescopic shafts 23, 23' pivotally mounted on a rotatable platform 45, Fig. 2, and having sprockets 27 at their upper ends in engagement with the elevator chains. The shafts 23, 23<1> are geared together and the shaft 23<1> is geared to a telescopic shaft 18 which is driven through bevel gears 16, 17 by a shaft 15. The shaft 8 of a motor is connected by bevel gears to the shaft 15. The lower end of the plate 24 is connected by a vertical pin to a light four-wheel truck 139, Fig. 1, to facilitate trans. portation. The plate 24 is swung laterally by the following mechanism. The shaft 18 is connected by bevel gears with a shaft 44 mounted in the platform 45 which carries a pinion 47 engaging an arcuate rack 48 on the truck. A two-way clutch is provided for reversing the direction of rotation of the gear 47. The rack is made in detachable sections which are removed when the machine is to pass. through narrow passages. The plate 24 is, raised and lowered by threaded shafts 59 pivoted thereto which are in threaded engagement with gears 58 which are geared together and one of which is connected by bevel gears to a shaft 55 geared to the shaft 44. The conveyers 4 are supported by hooks on cables 67 connected to winding drums 66 on shafts 64 mounted in brackets depending from the roof of the working. Brackets 99 on the bottom of the conveyer rest on the tops 98 of the ends of the truck and are releasably engaged by hooks 101. The conveyers 4 are driven by telescopic shafts 71, 72 which are geared together and one of which is driven by a pinion 126 from a pinion 69 on the shaft 18. The bottom of the conveyer is composed of overlapping rectangular plates 75, Figs. 16 and 17, supported on the cross bars 78 of open frames 76. Each pair of opposite plates has depending brackets 80 which are engaged by oppositelythreaded parts of shafts 79. Each pair of shafts 79 is coupled by a shaft 112 and bevel gears. Adjacent plates are simultaneously moved in opposite directions by rotating one of the shafts 79. The chains 118 of the conveyers 4 are enclosed in a housing composed of short articulated sections. Each section comprises a top plate 85, Fig. 13. and a bottom plate 86 which are provided with holes to receive the reduced ends of shafts 94, 96, Fig. 12. Adjacent sections are overlapped so that the end holes are coaxial. The shafts 96 carry sprockets 90 engaging the chains and sprockets which engage gears 95 on the shafts 94. The ends of the cross bars 78 are turned over and carry pivot pins 115, Fig. 16, on which are mounted oval plates 114 working in guides 116 on the plates 86.