Popular science monthly . Infra-red Yellow Violet Ultra violet Photographs of Jupiter made by Professor Wood with different rays 94 Popular Science Monthly. Trenches are now excavated and filled by machines. The filling-machine operates thescraper at a rate of speed wholly beyond that attainable by a man and a team Filling Trenches by MachineAN advance step has been taken±\ in the construction of sewers andthe laying of water-mains. With themodern trench-filler no time is lost inrefilling the excavation. The contentsof the deepest and longest earth openingcan be put back in double-quick time.
Popular science monthly . Infra-red Yellow Violet Ultra violet Photographs of Jupiter made by Professor Wood with different rays 94 Popular Science Monthly. Trenches are now excavated and filled by machines. The filling-machine operates thescraper at a rate of speed wholly beyond that attainable by a man and a team Filling Trenches by MachineAN advance step has been taken±\ in the construction of sewers andthe laying of water-mains. With themodern trench-filler no time is lost inrefilling the excavation. The contentsof the deepest and longest earth openingcan be put back in double-quick time. The new machine is a gasoline-enginewhich drives a windlass by means ofwhich a steel cable is wound. To theend of the cable is attached a steelscraper. The engine and equipment aremounted on a movable truck. Such isthe construction that the machine canbe used either on the truck or can beremoved entirely by simply takingseveral bolts out of the turntable. The new apparatus readily adaptsitself to several other uses in connectionwith trench operations. It is used topull heavy cables through conduits, toraise and lower giant telei)hone polesinto their
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
