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:
Aug. 30, 1977
Filed:
Sep. 08, 1975
Applicant:
Inventor:
Cecil Vowe Peake, Bethlehem, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21D / ;
U.S. Cl.
CPC ...
299 31 ; 61450 ; 299 33 ; 299 43 ;
Abstract
Mining apparatus for longwall mining comprising a mineral winning machine which traverses a mineral face, a row of self-advanceable roof supports parallel to the face, and a conveyor also parallel to the face for removing cut mineral, the supports having platforms which support the conveyor, the hydraulic props of the supports being positioned between the mineral face and the conveyor. The winning machine thereby can cut substantially across its whole depth, the props being adjacent the face to be cut. Ramps are provided on the supports and the conveyor to scoop out mineral onto the platforms and then on the conveyor, during advance of the supports and the conveyor.