Coal mining machine cutter with noise suppressant and flame resi

Details Coal mining machine cutter with noise suppressant and flame resi Coal mining machine cutter with noise suppressant and flame resi

1979-07-30

1981-09-22

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...

181208, 299 12, 407 32, E21C 3504, E21C 2724

Patent

active

042906539

ABSTRACT:
In a mining machine having a power driven cutter including metallic helical blade means having cutting bit means spaced along the exterior periphery thereof, the improvement which comprises the helical blade means having fixedly secured in surface-to-surface contact therewith energy absorbing layer means for dampening vibrations set up in the metal of the helical blade means when the cutter is in power operated cutting relation so as to materially reduce the operating noise level of the cutter within the mine.

REFERENCES:
patent: 2107788 (1938-02-01), Hall
patent: 2755881 (1956-07-01), Barrett
patent: 3085795 (1963-04-01), Snipe et al.
patent: 3292237 (1966-12-01), Fisher
patent: 3342530 (1967-09-01), Krekeler
patent: 3833404 (1974-09-01), Sperling et al.
patent: 4156470 (1979-05-01), Bodine et al.

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