Rotary cutting head

Details Rotary cutting head Rotary cutting head

E - Fixed Constructions

21

B

255/73

E21B 10/18 (2006.01) E21C 35/23 (2006.01)

Patent

CA 2031620

- 6 - ABSTRACT ROTARY CUTTING HEAD A rotary, mineral cutting head (1), comprises a hollow body portion provided with a plurality of relatively fine water passageways (11) to convey, in use, pressurised water from a supply source to a plurality of water spray nozzles (12), with a drain plug (14) screwed into a tapped hole (13) in the cutting head (1), whereby the content of the head (1) may be periodically drained.

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