Bucket chain
The bucket chain is a principle of transporting liquids and solids. In connection with fires, one also speaks of an extinguishing chain .
The term arose from the ancient method of transporting water through a human chain . Typically, people stand side by side at a distance of about one meter in the chain of buckets and pass buckets to each other . Thus, the bucket or buckets are passed from the first person in the chain (for example at a well) to the last (for example at a source of fire ).
Even before the establishment of fire brigades , in the event of a fire, all residents capable of working had to rush to the scene of the fire with buckets filled with extinguishing water and line up in double rows (chain of buckets) to the extinguishing water pond : "The bucket flew through the hands long chain in competition." wooden pressure sprayers were used by the fire brigades, but these had to be constantly filled with extinguishing water that was brought in with buckets. Then the fire engines , which could also suck in the water , prevailed . The later construction of the central water supply with the installation of hydrants made water transport much easier.
The longest bucket chain in the world was held on July 23, 2011 in Pfullingen as part of the 40th anniversary of the local youth fire brigade . A total of 869.2 liters of water was transported over a distance of 4589.75 meters from 5239 participants.
In post-war Germany, bricks were transported in the same way when clearing rubble. When sandbag walls are erected during floods, the sandbags are often transported using the same method (at least over the last few meters when delivering by truck or the like).
In mechanical engineering, the principle was applied to the construction of the bucket chain excavator .
The bucket chain is often used in technology as an explanatory model (e.g. charge-coupled component), see bucket chain storage .
Web links
Individual evidence
- ^ Franz-Josef Sehr : The fire extinguishing system in Obertiefenbach from earlier times . In: Yearbook for the Limburg-Weilburg district 1994 . The district committee of the Limburg-Weilburg district, Limburg-Weilburg 1993, p. 151-153 .
- ↑ Archive link ( Memento from December 24, 2013 in the Internet Archive ) Entry at www.guinnessworldrecords.de (engl.)