Bulge (vessel)
A bulge , also known as a pulge , pilge or bellows , is a tubular leather sack that was used in early mining to draw water or extract ore .
Structure and shape
A bulge was made of strong cowhide and was made of 2 to 2 ½ layers of animal hide. The bulges were provided with iron brackets as a carrying device. The capacity was 120 quart , that is about 137.4 liters (a quart Prussia in 1816 is 1.145 liters). There were two types of bulges, ring or ring bulges and bow bow . Due to their construction, Ringebulgen were able to draw the water automatically. The water servants had to manually fill the strikerbulgen in the sump . Through use, the animal skins wear out a lot, so that the hair fell out first. After prolonged use, the bulges tore and had to be repaired. Smaller cracks were closed by first closing the crack with a notched stick and then sewing it together. To do this, both sides were joined and sewn. In the case of heavily torn bulges, leather patches were placed over the cracks or holes and sewn.
use
To draw water, the bulges were hung on the hook of the pull chain with the iron bracket. They were then lowered into the sump. As soon as they were filled with water, they were pulled up and emptied. The filling process at Ringebulgen took place almost automatically as soon as they touched the water level. The construction of the ring bulges ensured the "automatic filling". Ring bulges were so high that they overturned when submerged in the water. In addition, the ring kept the ring bulges open at all times, so ring bulges could absorb the water automatically. Streichbulgen were filled by scooping in the water, for this purpose the water was poured in with a wooden shovel. For the transport of ores, the bulges were filled and unloaded manually.
Individual evidence
- ^ Heinrich Veith: German mountain dictionary with evidence. Published by Wilhelm Gottlieb Korn, Breslau 1871
- ↑ a b Georg Agricola: Twelve books on mining and metallurgy. In commission VDI-Verlag GmbH, Berlin
- ↑ Alfred Nehls: All wealth lay in the earth. Verlag Gronenberg, Gummersbach 1993, ISBN 3-88265-180-6