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US 4,014,574 AGranted
Mining machine having rectangular thrust transmitting conveyor column
AssigneeBrowning & Bushman
InventorRobert E. Todd
Life of this patent
Estimating the term…
Abstract
A mining machine comprises a laterally elongated cutting head including means for cutting an earth formation, a laterally elongated thrust transmitting column connected to and extending rearwardly from the cutting head, and a power head connected to the rear of the column and operative to thrust the cutting head forward into the earth formation by means of the interposed column. The column carries a non-thrust transmitting column conveyor for carrying fragments cut from the formation from the cutting head to the power head.
Claims29
A mining machine comprising:
- a cutting head including means for cutting an earth formation, the dimension of said cutting head from side to side being substantially greater than its vertical dimension;
- a thrust-transmitting column connected to said cutting head and extending rearwardly therefrom, the dimension of said column from side to side being substantially greater than its vertical dimension, and said column having a non-thrust-transmitting column conveyor carried thereby and extending along substantially the entire length of said column;
- and a power head connected to said column rearwardly of said cutting head and operative to thrust said cutting head forward into an earth formation by means of said column.
Dependencies are inferred from the claim text.