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1907年美国宾夕法尼亚人“卡尔·阿克利(Carl-Akeley)”设计发明了第一台喷射机,该机为单罐分批给料式。艾伦顿水泥喷枪公司(Allentown Cement Gun Company)的S·W·特勒罗尔购买了“阿克利”专利权以后,1915年设计制成了双罐式喷射机。五十年代发展了
In 1907, the American Pennsylvanian “Carl-Akeley” designed and invented the first jet machine, which is a single tank batch feed type. S. W. Trollrol of Allentown Cement Gun Company purchased the “Ackle” patent and designed a twin-tank jet in 1915. Developed in the fifties