河南省1959年在吸取外地經驗的基础上,結合具体情况制成了一种人力回轉式打井工具。这种工具效率較高,群众称之为“火箭錐”。但經过几年的使用,也发現它有一些缺点。1963年,我們在“火箭錐”的基础上作了一些改进,制成一种象大鍋一样的錐头,群众就称它为“大鍋錐”,比較小的称为“小鍋錐”。二年来在我省各地广泛应用,效果較好,很受群众欢迎。 Henan Province in 1959 on the basis of drawing on foreign experience, combined with the specific circumstances made a manpower rotary drilling tools. This tool is more efficient, the masses call it “Rocket Cone.” But after several years of use, I also found it has some shortcomings. In 1963, we made some improvements on the basis of the “rocket cone” and made a cone like a cauldron. The masses called it the “cauldron cone,” and the smaller one called the “cauldron cone.” Two years in various parts of our province widely used, the effect is better, very popular with the masses.