The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 1978
Filed:
Nov. 29, 1976
Will B Jamison, Bethel Park, PA (US);
Henry Fleck, Columbus, OH (US);
Consolidation Coal Company, Pittsburgh, PA (US);
Abstract
The mining machine has a body portion mounted on a pair of endless propelling tracks which advance the mining machine forwardly in the mine. Pairs of forwardly extending arm members are pivotally connected to the body portion and support at their end portions a skid plate which is positioned transversely across the body portion and arranged to rest on and slide over the mine floor. A first conveyor is supported by the skid plate and receives and directs dislodged material from the mine floor to a second conveyor connected to the end portion of the first conveyor. The second conveyor discharges the dislodged material to the rear of the body portion. A support frame is positioned on the skid plate and horizontally supports a pair of transverse guide rails at the front end of the body portion. A carriage is slidably mounted for transverse movement on the guide rails and includes a rotatable supporting shaft. A transverse support arm having axial spaced cutter shafts positioned thereon is secured to and rotatable with the supporting shaft. Forward movement of the body portion sumps the rotating cutter shafts into the mine face and by rotating the supporting shaft and feeding the carriage laterally on the guide rails a rectangular section is cut from the face. A first roof supporting apparatus supported by the body portion includes a vertically movable beam member arranged to engage the mine roof. A second roof supporting apparatus having vertically movable beam members is connected by piston cylinder assemblies to the body portion and is independently operable of the first roof supporting apparatus to support the mine roof when the first roof supporting apparatus is removed from engagement with the mine roof and advances forwardly with the body portion.