Richard Towneley

Richard Towneley (10 October 1629 – 22 January 1707) was an English mathematician, natural philosopher and astronomer, resident at Towneley Hall, Burnley in Lancashire. His uncle was the antiquarian and mathematician Christopher Towneley.

Towneley's Catholicism isolated him from some of the key scientific networks of the period, such as the Royal Society, but his individual collaborations were significant and impactful. One of these was with Robert Boyle, helping formulate Boyle's law, or as Boyle named it, "Mr. Towneley's hypothesis". He also introduced John Flamsteed to the micrometer and invented the deadbeat escapement, which became the standard escapement used in precision pendulum clocks and is the main escapement used in pendulum clocks today.