A clump cathead consists of a sheave mounted on a strong fitting on each bow abaft the hawsepipe.
Onyatheleka nzima umda othe tyaba, kwicala ngalinye lomphambili wenqanawa ukwenzela okwenyusa kunye nokuphatha i-ankile kwenziwa sisiqhelo sevili kwindawo yesinyusi kufakelo olomeleleyo kumphambili wenqanawa ngamnye phezulu kombhobho.