Jozef Karol Hell
Encyclopedia
Jozef Karol Hell (15 May 1713, Banská Štiavnica
Banská Štiavnica
Banská Štiavnica is a town in central Slovakia, in the middle of an immense caldera created by the collapse of an ancient volcano. For its size, the caldera is known as Štiavnica Mountains. Banská Štiavnica has a population of more than 10,000. It is a completely preserved medieval town...

 - 11 March 1789, Banská Štiavnica
Banská Štiavnica
Banská Štiavnica is a town in central Slovakia, in the middle of an immense caldera created by the collapse of an ancient volcano. For its size, the caldera is known as Štiavnica Mountains. Banská Štiavnica has a population of more than 10,000. It is a completely preserved medieval town...

) was a Hungarian
Kingdom of Hungary
The Kingdom of Hungary comprised present-day Hungary, Slovakia and Croatia , Transylvania , Carpatho Ruthenia , Vojvodina , Burgenland , and other smaller territories surrounding present-day Hungary's borders...

 mining engineer and inventor, who invented the water-pillar (water pump machine) in 1749 (first use 1753). It is mainly used today for oil extraction. He also proposed construction of the tajchy
Tajchy
Tajchy are artificial water reservoirs in the Štiavnica Mountains, in central Slovakia. Most of them were built in order to provide energy for the silver mines of Banská Štiavnica in the 18th century. At their height, tajchy comprised a sophisticated system of 60 reservoirs, connected to each...

 reservoirs around Banská Štiavnica
Banská Štiavnica
Banská Štiavnica is a town in central Slovakia, in the middle of an immense caldera created by the collapse of an ancient volcano. For its size, the caldera is known as Štiavnica Mountains. Banská Štiavnica has a population of more than 10,000. It is a completely preserved medieval town...

. He was a student of Samuel Mikovíny
Samuel Mikovíny
Samuel Mikovíny or Mikoviny Sámuel was a renowned Hungarian mathematician, engineer, map maker, and professor. He was a leading representative of science and technology in the 18th century Kingdom of Hungary and Habsburg Monarchy...

 in 1737. Regardless of his nationality, he is a pride of both Slovak and Hungarian nations.

His first machine was able to pump water up from the depth of 212 meters. Jozef Karol Hell later built the pumping machines in 1749-1768, which belongs to the best technology in this field worldwide.

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