Mining drum with cutting and shearing bits on conical ring

Patent · Tue Sep 30 04:00:00 EDT 1980

OSTI ID:6798478

Hoffmann, D

A mining auger includes an auger shaft having a front end, a conical end ring affixed to the front end of the auger and having a forwardly oriented face and a peripheral edge zone; a plurality of tool holders affixed to the peripheral edge zone in a circumferential distribution and each having a forwardly oriented face; and a cutting tool bit carried in each tool holder. Each cutting tool bit projects forwardly beyond a peripheral edge of the conical end ring and has a longitudinal axis extending at an inclined orientation with respect to an imaginary frontal plane which is perpendicular to the auger axis and which generally coincides with the mine wall face during operation. At least some of the tool holders carry a shearing tool bit each having an axis extending from the forwardly oriented face of the conical end ring in the direction of the frontal plane and further, each shearing tool bit has a tip which is at a significant distance from the forwardly oriented face of the respective tool holder.

• Assignee: IFI; EDB-81-053937
• Patent Number(s): US 4225190
• OSTI ID: 6798478
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
AUGER MINING
COAL MINING
CUTTING TOOLS
DESIGN
EQUIPMENT
MINING
MINING EQUIPMENT
TOOLS