Wedge hoe

from Wikipedia, the free encyclopedia

A wedge hoe (Austrian: mountain iron ) is a mining tool, part of the tough . It is a usually one-sided pickaxe that is used to loosen broken (loose, soft) rock. Double-sided wedges exist, but are called wing irons . At first glance, the latter can be confused with a pickaxe, but differ from it in that they have two points instead of a combination of a pickaxe and a wide hoe.

Wedge hoes in earlier mining, i.e. until around the middle of the 20th century, were smaller than corresponding field hoes that were used in open field and construction work. The reason for this was the limited space available underground . For this reason, the wing irons have not been able to assert themselves across the board, as the tip turned away from it could hit the roof or the joint or get stuck in the timber construction .

Wedge chisels are still used in modern, largely mechanized mining, but no longer in extraction work , but mainly in ancillary work. Due to the significantly larger cross-sections of the route - due to the large mining machines - modern wedge hoes are no longer smaller than corresponding cross hoes.

  • Old wedge hoe

  • Modern wedge hoe

  • Double wedge pick ("wing iron")

  • Double wedge pick ("wing iron", detail with an eye for the tackling ring and personal number of the miner )

literature

  • Fritz Heise, Fr. Herbst, Carl Hellmut Fritzsche : Textbook of mining science with special consideration of hard coal mining . 8th edition. tape 1 . Springer-Verlag, Berlin 1942 (687 pages).
  • Heinrich Veith: German mountain dictionary with evidence . Wilhelm Gottlieb Korn, Breslau 1871, p. 287 .
  • Kurt Hoffmann et al .: Expertise for the hard coal mining . tape 1 . People and knowledge, Berlin 1952 (205 pages).
  • Hermann Franke (Hrsg.): Lexicon of mining (= Hans Grothe [Hrsg.]: Lueger Lexikon der Technik . Volume 4 mining). 4th completely revised and expanded edition. Deutsche Verlags-Anstalt, Stuttgart 1962 (727 pages).
  • Б. В. Бокий: mining science . Technik, Berlin 1955 (647 pages, Russian: Горное Дело . Translated by R. Staepken).
  • Georg Agricola : De Re Metallica Libri XII . Twelve books on mining and metallurgy. Unchanged reprint of the first edition by VDI-Verlag, 1928 edition. Marixverlag, Wiesbaden 2006, ISBN 3-86539-097-8 (Latin: De Re Metallica Libri XII .).

Individual evidence

  1. ^ Carl von Scheuchenstuel: Idioticon of the Austrian mountain and hut language . For a better understanding of the Austrian mountain law and its motives for non-Montanists. Wilhelm Braumüller, Vienna 1856, p. 27, 138 .