This week our cover shows a powerful electric lifting magnet at work in a scrap yard, moving empty shell cases. The lifting magnet is attached to a 5-tons overhead travelling crane. The magnet is circular, a type suitable for lifting such loads as pig iron, solid ingots and scrap metal.
POWERFUL ELECTRIC LIFTING MAGNET at work in a scrap yard, moving empty shells and other pieces of scrap metal. The magnet, which is of the circular type, is attached to a 5-tons overhead travelling crane. Lifting magnets of circular shape are most suitable for such loads as pig iron, solid ingots and scrap metal of varying sizes. Direct, or continuous current is used for electric lifting magnets, and they are generally built for a 110-volts or 200-volts supply.
The large quantities of grain from the prairies of Canada, or other wheat-growing districts, to the flour mills of Great Britain can be handled rapidly in bulk only by special machinery of remarkable design. The flow chart in this chapter shows how grain is handled from the moment the grain ship draws alongside the quay until the grain is delivered into the huge storage bins which are known as silos. This is the ninth article in the series on the Romance of Industry.
The engineer is continually battling against the titanic might of the Mississippi River. The problem has proved too formidable for local effort, and its solution is reorganization under national control. This chapter is concluded in part 28.