Transactions . the wagons end on to thehoist, ready to be run on to or off the hoist platform. Theposition of the fixed turntables determines the position of thehoists when in operation. The only adjustment providedbetween these points is by means of the shoots, which can beraised and lowered with the platform, and as they are suspendedby steel-wire ropes, the outer end of each has (operated by thehydraulic winch from their noses), by means of a swivel jointarrangement, a lateral travel of 10 feet, or 5 feet on each sideof its central position. Each hoist is provided with eightflanged tread wh
Transactions . the wagons end on to thehoist, ready to be run on to or off the hoist platform. Theposition of the fixed turntables determines the position of thehoists when in operation. The only adjustment providedbetween these points is by means of the shoots, which can beraised and lowered with the platform, and as they are suspendedby steel-wire ropes, the outer end of each has (operated by thehydraulic winch from their noses), by means of a swivel jointarrangement, a lateral travel of 10 feet, or 5 feet on each sideof its central position. Each hoist is provided with eightflanged tread wheels running on double pathway rails with COAL-SHIPMENT AND THE LAYING-OUT OF STAITHE HEADS. 201 20 feet 4 inches centres, and is fitted with a hydraulic traversing1engine of the well-known three-cylinder Brotherhood platform is raised by four direct-acting lifting rams placedin pairs on each side of the platform, and attached at their upperends to a cross-head, from which the platform is suspended by. Fig. 44. -Hydraulic Coal-hoist, London .on Xokth Western RailwayCompany, Garvton Docks, nf. \r Liverpool. two steel lifting-rods. These two Large and two smallerrams, 9g inches and 6A inches in diameter respectively, areindependently controlled by a separate set of pressure- andexhaust-valves, actuated from the controlling cabin b}- separate 202 COAL-SHIPMENT AND THE LAYING-OUT OF STAITHE HEADS. levers. The combination of the rams for various purposes isas follows:—(a) With all four rams open to pressure, whenascending, the lift ascends with the loaded wagon; (b) with thelarge rams only open to pressure, when ascending, or the smallones only to exhaust, when descending, the lift ascends with theempty wagon or descends with the loaded wagon, the water fromthe large rams being returned to the pressure mains; (c) withthe small rams only open to pressure, when descending, and thelarge ones to exhaust, the lift descends with the empty wagon,the water from the small rams bei
Size: 1448px × 1726px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmechan, booksubjectmineralindustries
