Machine and method for mining underground deposits

• US 2,754,101 A
• Filed: 01/21/1949
• Issued: 07/10/1956
• Est. Priority Date: 01/21/1949
• Status: Expired due to Term

• Current Assignee: John G. Nutt, Russell G. Haworth
• Original Assignee: John G. Nutt, Russell G. Haworth
• Inventors: Nutt, John G., Haworth, Russell G.
• Application Number:
  US03/071,774
• Time in Patent Office: 2,727 Days
• US Class Current: 299/18
• CPC Class Codes: E21C 27/24 by milling means acting on the full working face , i.e. the rotary axis of the tool carrier being substantially parallel to the working face similar machines for tunneling E21D9/1026
• CPC Class Codes: E21D 9/13 using hydraulic or pneumatic conveying means

Claims

1. A MINING MACHINE COMPRISING A SKIDDABLE BASE HAVING HYDRAULIC JACKS AT ITS CORNERS AND A HYDRAULICALLY PROPELLED PLATFORM EXTENDING HORIZONTALLY FROM THE REAR END THEREOF AND HAVING A VERTICAL OPENING THERETHROUGH FOR THE RECEPTION OF A PIVOT DEVICE FIXED WITH RESPECT TO THE FLOOR OF THE MINE ROOM, A BOOM EXTENDING FORWARDLY OF SAID BASE AND CARRYING A CUTTER DRUM ON A VERTICAL AXIS, SAID DRUM HAVING A SUBSTANTIALLY CONTINUOUS CYLINDRICAL SURFACE AND CUTTER BITS DISTRIBUTED SUBSTANTIALLY UNIFORMLY OVER SAID CYLINDRICAL SURFACE, MEANS FOR ROTATING SAID DRUM, LATERAL OUTRIGGER ARMS EXTENDING FROM THE SIDES OF THE MACHINE, AND CABLES ARRANGED TO BE ATTACHED TO THE SIDES OF THE MINE ROOM AND TRAINED OVER SAID OUTRIGGER ARMS, AND WINCHES ON SAID MACHINE TO FEED AND WIND SAID CABLES FOR SWINGING THE MACHINE UPON SAID PIVOT DEVICE TO MOVE SAID DRUM IN A HORIZONTAL ARCUATE PATH.