Non-rotary mining cutter with recessed nozzle insert
AssigneeGewerkschaft Eisenhutte Westfalia
InventorArmin Lobbe
Life of this patent
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Abstract
A tool for a mineral winning machine, more usually a plough, has a flat plate-like body with a bore containing a nozzle insert and preferably a hard metal cutting region or blade is also provided on the body. High pressure water is conveyed through the bore and nozzle insert to discharge as a jet which is directed to impinge against the mineral or coal face to effect a cut therein hydraulically. The nozzle insert has its discharge mouth in a protected position inside the body.
Claims14
In or for a mineral winning machine, a non-rotary tool assembly comprising holding means and a tool detachably mounted to the holding means, the tool being provided with a cutting region and at least one nozzle for discharging a jet of high pressure fluid suitable for detaching mineral from a mineral face, said tool having a body with a detachable nozzle insert therein and wherein the body has a main bore containing the nozzle insert, and said nozzle insert has an outlet mouth communicating with a further bore coaxially with the main bore and leading to an exterior surface of the body.
A mineral winning machine equipped with conventional cutters and additional non-rotary tool assemblies staggered in alternate manner to intersperse with the conventional cutters, wherein each additional non-rotary tool assembly comprises holding means and a tool mounted to the holding means, said tool comprising a body having a cutting region and at least one detachable nozzle insert contained in a main bore within the body, said nozzle being connected by way of a further bore concentric with the main bore to an exterior surface of the body, said nozzle insert and coaxial bore serving to discharge a jet of high pressure fluid suitable to detach mineral from a mineral face.
Dependencies are inferred from the claim text.