Samuel Crompton, inventor of the spinning mule, early 19th century.

Samuel Crompton, inventor of the spinning mule, early 19th century.

Samuel Crompton, English inventor of the spinning mule, early 19th century.

Samuel Crompton, inventor of the spinning mule, early 19th century.

Richard Roberts, Welsh mechanical engineer and inventor, c 1850.

Crompton's spinning mule frame, 1770s.

Richard Roberts, Welsh inventor, mid-19th century.

Richard Roberts, Welsh inventor, mid-19th century.

Richard Arkwright, British inventor of textile machinery, 1780-1792.

Spinning Wheel, c 18th century.

Spinning Wheel, c 18th century.

Spinning Wheel, c 18th century.