172) _____ removed the defects of the Spinning Jenny and Water Frame, with his machine known as ′Spinning Mule′( 1778) .

173) In 1733, _____ had invented a device called the ′Flying Shuttle′.

174) In 1785, _____ invented the Automatic or Power Loom.

175) Who invented a machine called the ′Cotton Gin.′?

176) In 1816, _____ invented a machine called Davy′s Safety Lamp.