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HARD COAL PLOUGH [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 1999-05-11

English

Subject field(s)
  • Mining Equipment and Tools
  • Lignite, Graphite and Coal Mining
DEF

A cutter-loader based on the plough principle and designed to cut coal which is too hard for the ordinary plough. Two vertical blades, fitted one at each end of the machine, carry cutting picks which shear the coal from the face by an oscillating motion. The machine is hauled backward and forward along the face by a chain haulage mounted on the tail end of the conveyor. The conveyor and slicer are held up to the coal by pneumatic rams spaced along the goaf side of the conveyor. The sheared coal is forced from the face by the wedge shape of the machine and is loaded on to the armoured conveyor by means of specially shaped ramps. The machine has been designed for seams with a minimum thickness of 4 ft and has a maximum cutting depth of 14 in.

Key term(s)
  • activated plow
  • activated coal plow

French

Domaine(s)
  • Outillage et équipement (Exploitation minière)
  • Exploit. de charbons fossiles autres que la tourbe
CONT

Le rabot activé. La firme anglaise Huwood construit un rabot activé dont les pics, animés d'un mouvement de translation, frappent le massif à la manière de l'aiguille d'un marteau piqueur. L'appareil est alimenté à la fois en courant et en air comprimé. Plusieurs versions en ont été réalisées. Malgré de sérieuses difficultés, il est possible qu'il y ait là une voie intéressante.

Spanish

Save record 1

Record 2 1999-05-11

English

Subject field(s)
  • Mining Equipment and Tools
DEF

A plough type of cutter-loader for cutting the harder coal seams. It consists of stepped kerving bits which pre-cut the coal, leaving the unstressed coal to be cut by the following bits. The kerving bits may be either rigid or swivelling.

Key term(s)
  • hard coal plow
  • Westfalia plow

French

Domaine(s)
  • Outillage et équipement (Exploitation minière)
CONT

Voici pour finir des chiffres de production, rendements et prix de revient comparés obtenus avec et sans rabot Westphalia.

Spanish

Save record 2

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