The water frame is the name given to the spinning frame, when water power was use to drive it. Both are credited to Richard Arkwright who patented and exploited the technology. It was based on an invention by Thomas Highs and the patent was later overturned. John Kay, a clock maker and mechanic who helped Highs build the spinning frame, sold the design to Arkwright (for what might be considered a derisory sum). It was Arkwright, however, who made the system work, realising that account had to be taken of the fibre lengths in the batch being spun.