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:
Jun. 09, 1981
Filed:
Jan. 09, 1980
Alois Hauschopp, Werne, DE;
Gewerkschaft Eisenhutte Westfalia, Lunen, DE;
Abstract
A plough for winning material in a longwall working is formed with guide surfaces which co-operate with a guide provided at the face-side of a longwall conveyor. The plough is driven by means of a chain passing round a pair of sprockets positioned at the ends of the conveyor at the goaf-side thereof. The plough is provided with a sword plate which passes underneath the conveyor, and the sword plate is provided with a coupling member for engaging the plough drive chain. the plough includes a plough body provided with cutters at one end thereof. The coupling member is set back relative to said cutters by a sufficient distance to enable the plough to win material up to the appropriate end sprocket when the plough is moving in such a direction that said cutters are leading cutters.