Disc cutting unit for use on rock boring machines

Details Disc cutting unit for use on rock boring machines Disc cutting unit for use on rock boring machines

1973-05-31

1976-09-21

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175361, 175374, E21B 914, E21B 936

Patent

active

039813703

ABSTRACT:
A rock-boring machine of the type comprising a rotatable headplate having a plurality of disc cutting units mounted on the front face of the headplate. Each disc cutting unit includes an annular rotatable body having a continuous recess extending around its periphery and a plurality of cutting segments located in the recess. The segments are secured in the recess by means of removable clamping means.

REFERENCES:
patent: 1143275 (1915-06-01), Hughes
patent: 1673285 (1928-06-01), Holdaway et al.
patent: 1705055 (1929-03-01), Allison
patent: 3204710 (1965-09-01), Bechem
patent: 3572452 (1971-03-01), Winberg
patent: 3734213 (1973-05-01), Goodfellow
patent: 3752243 (1973-08-01), Hummer et al.

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