the United States invented Worthington pump cylinder and steam-cylinder boxer, and the direct effect of the steam piston pumps, marked the formation of modern piston pump.

• 1850年，美国沃辛顿发明泵缸和蒸汽缸对置的，蒸汽直接作用的活塞泵，标志着现代活塞泵的形成。