Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Patent
1981-05-11
1984-03-27
Purser, Ernest R.
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Sectional guide or shaft having means to lock sections in...
175 61, 299 18, 299 19, 299 87, E21B 708, E21C 4100
Patent
active
044388217
ABSTRACT:
The disclosure relates to a mining machine consisting of four basic parts, a cutting head, revolving sections, stationary sections, and an upper section. These parts being cylindrical in shape with mitered ends.
A journalled articulated drill shaft with a spiral configuration extends through the four basic parts.
After the machine is passed through a vertical bore hole the revolving sections are turned to form the machine in an angular configuration.
With the journalled articulated drill shaft turning, revolving the cutting head, the upper section of machine is turned, mining in cylindrical patterns and transporting material to the surface through the machines spiral shafts.
Extension of horizontal length of machine iin cavern is achieved by simultaneously turning revolving sections and descending machine through bore hole. After extensions of machine mining is repeated.
REFERENCES:
patent: 1084871 (1914-01-01), Tuck
patent: 1850403 (1932-03-01), Lee
patent: 1886820 (1932-11-01), Lee
patent: 2118650 (1938-05-01), Lee
patent: 2296161 (1942-09-01), Hall
patent: 3011568 (1961-12-01), Grimm
patent: 3586116 (1971-06-01), Tiraspolsky et al.
patent: 3958649 (1976-05-01), Bull et al.
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