Agricola, Georgius, De re metallica, 1912/1950

Table of figures

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              <s>A—FURNACE. B—LADDER. C—BOARD FIXED TO IT. D—HOE. E—FIVE­
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              TOOTHED RAKE. F—WOODEN SPATULA. G—BROOM. H—RAMMER. I—RAMMER, SAME
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              DIAMETER. K—TWO WOODEN SPATULAS. L—CURVED BLADE. M—BRONZE RAMMER.
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              N—ANOTHER BRONZE RAMMER. O—WIDE SPATULA. P—ROD. Q—WICKER BASKET.
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              R—TWO BUCKETS OF LEATHER IN WHICH WATER IS CARRIED FOR PUTTING OUT A CON­
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              FLAGRATION, SHOULD THE
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              officina
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              CATCH FIRE. S—BRASS PUMP WITH WHICH THE WATER
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              IS SQUIRTED OUT. T—TWO HOOKS. V—RAKE. X—WORKMAN BEATING THE CLAY WITH
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              AN IRON IMPLEMENT.
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              two and a half digits thick; the upper part of the rammer, where the handle
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              is inserted, is bound with an iron band two digits wide. </s>
              <s>There are some who,
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              instead, use two rounded rammers three and a half digits in diameter, the
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              same at the bottom as at the top. </s>
              <s>Some people prefer two wooden
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              spatulas, or a rammer spatula.</s>
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              <s>In a similar manner, mixed and moistened powder is thrown and pounded
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              with a rammer in the forehearth pit, which is outside the furnace. </s>
              <s>When
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              this is nearly completed, powder is again put in, and pushed with the rammer
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              up toward the protruding copper pipe, so that from a point a digit under the
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              mouth of the copper pipe the hearth slopes down into the crucible of the fore­
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              hearth,
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              11
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              and the metal can run down. </s>
              <s>The same is repeated until the </s>
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