Dross
A Bohrkrätzer even drill handle , flour scratches or just Krätzer called, is a rod-shaped tool , which for cleaning the wells is used. With the dross, the drilling dust or drilling mud is removed from the boreholes.
Structure and shape
The drill dross consists initially of a thin iron rod. An iron wire is used for this. A crooked leaf is attached to one end of the iron rod. This leaflet has the shape of a shallow spoon and is used to remove the cuttings from the borehole. The leaflet is attached at right angles to the iron rod. On the other side of the dross is a screw-like thread with which the drill dust can be loosened and partially pulled out of the borehole. In addition, a rag can be attached to this end to completely clean the borehole. There are also drosses where only one end is provided with a cleaning function.
Individual evidence
- ^ A b c Heinrich Veith: German mountain dictionary with evidence . Published by Wilhelm Gottlieb Korn, Breslau 1871.
- ^ A b Moritz Ferdinand Gätzschmann: Collection of mining expressions. Second substantially increased edition, Verlag von Craz & Gerlach, Freiberg 1881.
- ^ A b c Carl Friedrich Richter: Latest mountain and hut lexicon. First volume, Kleefeldsche Buchhandlung, Leipzig 1805.
- ^ A b c Carl von Scheuchenstuel : IDIOTICON of the Austrian mountain and hut language. kk court bookseller Wilhelm Braumüller, Vienna 1856