Towing trough

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When towing trough , carter or grinding trough is known in mining a wooden bucket that used to promote the incoming gained minerals was used. The towing trough was a very simple means of conveyance that was moved by towing away from the tractor . The main area of ​​application of the drag troughs were seam-like deposits . In the case of corridor ore construction, extraction with troughs was not carried out.

construction

The towing trough is assembled from individual boards. Oak wood was usually used for this. Wooden sled runners were attached to the long sides of the trough box. The runners and the edges of the towing trough were reinforced with iron straps. Iron hooks were attached to both end walls to attach the tackle. This made it possible to pull the trough in both directions. The size of the towing trough was adapted to the local conditions. The clear dimensions were approximately 1.25 meters in length, 0.628 meters in width and 0.261 meters in height. The volume of the trough was around 0.2 cubic meters, so that a towing trough could move between 125 and 150 kilograms. Instead of the towing troughs there were z. B. also in the Saarbrücken mountain area so-called roller sleds, which had small wheels in addition to the runners. The runners were used for fast conveying movements, the wheels were used for heavy loads. However, these roller sleds could not prevail. The sledge was a vessel similar to the towing trough, so the two vessels were often confused. Their difference lay in the runners, because in contrast to the towing trough, the sledge was placed on separate runners from which it could be lifted.

application

Towing troughs were used by the miners where they could no longer get there with the hunts or with carts . When using towing troughs, it was usually not necessary to specially refurbish the sole . But if the sole was too uneven, boards were placed on the sole and the troughs dragged over it. The simple distances that were conveyed with the towing trough should not be more than 60–70 laughs . The filled vessel should be dragged downwards if possible. The incline of the sole should not be less than 4.5 gon . The optimal incline is between 7.2 and 13.5 gon. In France, pit horses were used for upward conveyance with troughs . The horses ran downhill and the trough was pulled by means of a rope that was steered over a pulley.

Individual evidence

  1. a b c d Heinrich Veith: German mountain dictionary with evidence. Published by Wilhelm Gottlieb Korn, Breslau 1871.
  2. Explanatory dictionary of the technical terms and foreign words that occur in mining in metallurgy and in salt works and technical articulations that occur in salt works. Falkenberg'schen Buchhandlung publishing house, Burgsteinfurt 1869.
  3. ^ A b c Karl Christian von Langsdorf: Detailed system of the machine customer. With special applications in various objects of industry edited for the practitioner, second volume, second and last section, in which agricultural machinery is also laboriously handled, in the publishing house of the new academic bookshop by Karl Groos, Heidelberg and Leipzig 1828, pp. 668, 669.
  4. a b c Carl Hartmann (Hrsg.): Concise dictionary of the mountain, hut and Saltworks. In addition to the French synonymy and a French register, first division, A to K, printed and published by Bernhard Friedrich Voigt, Ilmenau 1825, p. 253.
  5. a b c d e f g h Albert Serlo: Guide to mining science. Second volume, fourth improved edition, published by Julius Springer, Berlin 1884, pp. 9-13.
  6. a b c d e f g Albert Serlo: Guide to mining science. Second volume, third revised and up to the most recent edition supplemented, published by Julius Springer, Berlin 1878, pp. 3–5.
  7. ^ Gustav Köhler: Textbook of mining science. Second improved edition, Verlag von Wilhelm Engelmann, Leipzig 1887, pp. 307-308.

Remarks

  1. In mining, dragging is the term used to describe the pulling, as opposed to pushing or pushing, of the conveying vessels in order to move them. (Source: Heinrich Veith: German Mountain Dictionary with evidence. )