Transactions . Fig. 1.—The Arrangement of the Chain Supporting the Fig. 2.—The Recording Mechanism at the Bottom of the Furnace. 82 STOCK-LINE RECORDER FOR IRON BLAST-FURNACES. carried in a double bearing, resting on the cap of the centralofr-take pipe. The chain comes up from the test-rod (which issimply a 1 J-in. round iron bar, about 18 ft. long), passes througha hole in the cap and around the pulley supported it goes to a similar pulley carried on a piece of held by a bracket on the side of the furnace and stayed tothe filling-plates; and, passing over t
Transactions . Fig. 1.—The Arrangement of the Chain Supporting the Fig. 2.—The Recording Mechanism at the Bottom of the Furnace. 82 STOCK-LINE RECORDER FOR IRON BLAST-FURNACES. carried in a double bearing, resting on the cap of the centralofr-take pipe. The chain comes up from the test-rod (which issimply a 1 J-in. round iron bar, about 18 ft. long), passes througha hole in the cap and around the pulley supported it goes to a similar pulley carried on a piece of held by a bracket on the side of the furnace and stayed tothe filling-plates; and, passing over this pulley, it turns straightdown. A short distance below the second pulley the chain isfastened to a piece of No. 10 wire which runs the rest of theway down. Chain was used at the top, because it was doubtfulwhether wire or wire-rope would stand the combination of heatand small pulleys. The chain is T3^ in. in size, and it has givenno trouble whatever, though old and nearly worn out when firstinstalled. Fig. 1 shows about half of the center-pipe at the left,and a portio
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
