Ngā mea o mua me ngā mea o nāianei mō te Cone bit

Mai i te taenga mai o te mata kōne tuatahi i te tau 1909, ko te mata kōne te mea tino whānuitia te whakamahinga o te ao. Ko te mata tricone te mata wiri tino noa e whakamahia ana i roto i ngā mahi keri hurihuri. He rerekē ngā hoahoa niho me ngā momo hononga whāriki o tēnei momo keri, nō reira ka taea te whakarerekē ki ngā momo hanganga rerekē. I roto i te mahi keri, ka taea te whiriwhiri tika i te hanganga tika o te mata kōne i runga i ngā āhuatanga o te hanganga kua kerihia, ā, ka taea te whiwhi i te tere keri me te pikitia mata e tika ana.

Ko te kaupapa mahi o te mata kōne

Ina mahi te mata kōne i te raro o te kōhao, ka huri te mata katoa i te tuaka o te mata kōne, e kiia nei ko te hurihanga, ā, ka hurihuri ngā kōne e toru i te raro o te kōhao i runga i tō rātou ake tuaka, e kiia nei ko te hurihanga. Ko te taumaha ki te mata kōne e pā ana ki te toka mā roto i ngā niho ka pakaru te toka (te kuru). I te tukanga hurihuri, ka pā te kōne ki te raro o te kōhao me ngā niho kotahi me ngā niho takirua, ā, ka teitei ake, ka iti ake te tūranga o waenganui o te kōne, ka puta te wiri roa o te mata kōne. Mā tēnei wiri roa ka pēhia, ka totoro tonu te aho wiri, ā, mā te aho wiri o raro ka huri i tēnei whakarerekētanga porowhita hei kaha pānga ki te hanganga mā roto i ngā niho hei pakaru i te toka. Ko tēnei mahi pānga me te kuru te huarahi matua o te kuru toka mā te mata kōne.

Haunga te pā me te kuru i te toka i te raro o te kōhao, ka puta anō hoki i te mata kōne te pānga kutikuti ki te toka i te raro o te kōhao.

Te whakarōpūtanga me te kōwhiringa o te moka kōne

He maha ngā kaihanga o ngā mata kōne, e tuku ana i ngā momo me ngā hanganga o ngā mata kōne. Hei whakahaere i te kōwhiringa me te whakamahinga o ngā mata kōne, kua whakawhanakehia e te International Institute of Drilling Contractors (IADC) tētahi paerewa whakarōpūtanga kotahi me te tikanga tau mō ngā mata kōne huri noa i te ao.