Cutting head for drift advancing machines and process for produc

Details Cutting head for drift advancing machines and process for produc Cutting head for drift advancing machines and process for produc

1983-09-02

1986-02-25

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Cleansing fluid passage

228166, E21C 708, E21F 502

Patent

active

045725837

ABSTRACT:
For the supply of water to nozzles on the circumference of a cutting head there are, within a cutting head (1) composed of individual discs (2), provided bores (14 respectively 16) extending in direction to the axis of rotation of the cutting head (1). The individual annular discs (2) are connected one with the other by welding, the weld beads extending over a radial area (a) of the cutting head which is greater than the diameter (b) of the bores (14 respectively 16). The bores (14 respectively 16) extend through the weld beads (19) (FIG. 2).

REFERENCES:
patent: 3374033 (1968-03-01), Arentzen
patent: 3563324 (1971-02-01), Lauber
patent: 4255641 (1981-03-01), Connell et al.
patent: 4289357 (1981-09-01), Hintermann et al.

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