This section is from the book "An Elementary Outline Of Mechanical Processes", by G. W. Danforth. Also available from Amazon: An elementary outline of mechanical processes.
Fig. 51 shows the front of a regenerative heating furnace for blooms and other large material, with the charging crane used to handle heavy material. This furnace is modeled like the open-hearth steel furnace. The whole of one side is enclosed by doors D, which open into one common heating space. Connection with the regenerative heating system at one end of the furnace is shown at R.
The crane has an arm A, with electrically controlled tongs or fingers at the end, which now holds a bloom ready to be conveyed through the open door into the furnace. This arm may be swung in a horizontal plane, with slight vertical movement for lifting or lowering blooms. The roller table T may be used to convey cold blooms within reach of the crane, and to convey hot blooms to the hydraulic shears in the background of the view.
 
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