Title:
Steering means for rotary head tunneling machine
United States Patent 3061288

Inventors:
Miller, William W.
Publication Date:
10/30/1962
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Assignee:
GOODMAN MFG CO
Primary Class:
299/31
Other Classes:
299/58, 175/94
International Classes:
E21D9/10; E21D9/11
US Patent References:
2764397Auger mining apparatus having rigidly attached transverse conveyor
2766977Rotary cutter head for boring type continuous mining machine
2766978Rotary head tunneling machine having oppositely rotating head portions
2837325Rotary type tunneling machine
2839165Quick release fastening
2839281Boring type mining machine having an adjustable boring head
2864600Mining machine
2874936Apparatus for excavating holes