Question

Richard Roberts invented -----------------------in the year-------------

Answer 1

In 1824 he invented his most famous machine, the self-acting spinning mule, and patented it in March 1825. These were made in hundreds, and Roberts made extensive use of templates and gauges to standardise production.

Answer 2

Richard Roberts invented his most famous machine, the self-acting spinning mule in the year 1824 and and Patented it in March 1825.