Ngokophando, ukusetyenziswa kweetsheyini kwilizwe lethu kunembali engaphezu kweminyaka engama-3,000. Kumaxesha amandulo, iilori eziqengqelekayo kunye namavili amanzi asetyenziswa kwiindawo zasemaphandleni zelizwe lam ukuphakamisa amanzi ukusuka kwiindawo eziphantsi ukuya kwiindawo eziphakamileyo zazifana neetsheyini zanamhlanje zokuhambisa amanzi. Kwincwadi ethi “Xinyixiangfayao” ebhalwe nguSu Song kwiNorthern Song Dynasty, kubhaliwe ukuba into eqhuba ukujikeleza kwe-armillary sphere ifana nesixhobo sokudlulisa iitsheyini esenziwe ngesinyithi sanamhlanje. Kuyabonakala ukuba ilizwe lam lelinye lamazwe okuqala ekusetyenzisweni kweetsheyini. Nangona kunjalo, isakhiwo esisisiseko setsheyini yanamhlanje saqalwa saza sacetywa nguLeonardo da Vinci (1452-1519), isazinzulu esikhulu kunye nomzobi ngexesha le-European Renaissance. Ukususela ngoko, ngo-1832, iGalle yaseFransi yasungula i-pin chain, kwaye ngo-1864, i-British Slater roller chain engenamikhono. Kodwa yayiyiSwiss Hans Renault eyafikelela kwinqanaba loyilo lwesakhiwo setsheyini yanamhlanje. Ngo-1880, waphucula ukusilela kwesakhiwo setyathanga sangaphambili waza wayila ityathanga laba yityathanga le-roller elidumileyo namhlanje, waza wafumana ilungelo elilodwa lomenzi wetyathanga le-roller e-UK.
Ixesha lokuthumela: Septemba-01-2023