Clayton Windmills

Jill
Jill (foreground) and Jack (background)
Origin
Grid reference	TQ 304 134
Operator(s)	Jack and Jill Windmills Society
Year built	1821
Information
Purpose	Corn mill
Type	Post mill
Base storeys	Two storey roundhouse
No. of sails	Four
Type of sails	Patent sails
Windshaft	Wood, with cast iron poll end
Winding	Tailpole mounted fantail
Fantail blades	Five blades
No. of pairs of millstones	Two pairs, arranged Head and Tail
Other information	Moved from Brighton in 1852. Main post constructed of four pieces of timber.

Jack
Jack, with the roundhouse of Duncton Mill in the foreground
Origin
Grid reference	TQ 304 135
Year built	1866
Information
Purpose	Corn mill
Type	Tower mill
Storeys	Five storeys
No. of sails	Four
Type of sails	Patent sails
Windshaft	Cast iron
Winding	Fantail
Fantail blades	Five blades
Other information	Was fitted with Hammond's Patent Sweep Governor. Brake wheel was formerly in Duncton mill.

The Clayton Windmills, known locally as Jack and Jill, stand on the South Downs above the village of Clayton, West Sussex, England. They comprise a post mill and a tower mill, and the roundhouse of a former post mill. All three are Grade II* listed buildings.

The windmills stand atop the scenic South Downs with spectacular views of the Sussex Weald. They are seven miles north of the city of Brighton and Hove. As well as Jack and Jill, the roundhouse of Duncton Mill survives, located a short distance east of Jack.

The mills are easily accessible by road at the end of Mill Lane from the A273 road where it crosses the South Downs. There is ample free parking in the car park beside the mills.

Duncton Mill was built in 1765. She was owned by Viscount Montague and leased for 99 years. Duncton Mill was demolished in 1866, leaving the roundhouse to be used as a store.

Duncton Mill was a post mill with a single storey roundhouse, four Common sails. She was winded by hand and had two pairs of millstones. The Head Wheel from Duncton Mill was used as the Brake Wheel in Jack when that mill was built.

Jill is a post mill originally built in Dyke Road, Brighton, in 1821. She was known as Lashmar's New Mill and was built to replace Lashmar's Old Mill. In 1830, the Windshaft broke, bringing the sails crashing to the ground. A painting by Nash dated 1839 and an engraving in the Handbook to Brighton (1847) show her to have had a roof mounted Fantail, similar to the arrangement still found on Icklesham windmill. Lashmar's New Mill was the most southerly of the three Dyke Road post mills. In 1852 she was moved to Clayton by a team of horses and oxen. The site is now Belmont—a short street of Grade II-listed villas.