Cutter bit holder

Details Cutter bit holder Cutter bit holder

1980-09-19

1982-08-03

Purser, Ernest R.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Tooth mounted on helical head portion or head with helical...

299 83, 299 88, 299 92, 37142A, E21C 3518

Patent

active

043424864

ABSTRACT:
A mining machine assembly includes bit supports having primary and secondary cutter bits secured thereto. The bit supports may take the form of bit holders. A drum member may have a plurality of bit holders secured thereto. At least some of the bit holders have two cutter bits secured thereto. A primary cutter bit and a secondary cutter bit are secured to such cutter bit holders. The primary and secondary cutter bits are so positioned as to travel in substantially the same orbital path upon rotation of the cutter drum. The primary cutter bit projects radially outwardly farther than the secondary bit.

REFERENCES:
patent: 1880091 (1932-09-01), Hughes
patent: 2521089 (1950-09-01), Phipps
patent: 3325219 (1967-06-01), Guillon et al.
patent: 3614164 (1971-10-01), Davis
patent: 3834764 (1974-09-01), Krekeler
patent: 4068897 (1978-01-01), Amoroso

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