Monday, October 20, 2008

Heckington eight-sail windmill

click photo to enlarge
Three types of traditional windmill are to be found in England. The oldest is the post-mill, a relatively light-weight, mainly wooden structure with no fan-tail, that is turned into the wind with a tiller beam. One at Outwood, Surrey, dates from 1665, though many examples no longer standing were built before that date. Next comes the smock mill, so called because its tapered, boarded, octagonal tower resembles a nineteenth century countryman's smock. That at Lacey Green, was built in 1650. The final development was the tower mill, and this is the type most commonly seen today.

Tower mills were developed in the eighteenth century and have a round or octagonal brick or stone tower similar to a lighthouse. The wooden top revolved so that the sails always pointed into the wind. This was achieved by another eighteenth century development - the fantail - that worked much like the broad end of a weather vane, but had the added advantage of small blades that could be used to power a hoist. The movement of the main sails was transmitted to millstones through a series of shafts and cogs. In 1919 there were 350 working windmills: today there are about 24, though many more stand with motionless sails and silent machinery, or have been converted into houses. An even greater number of sail-less towers can be seen.

Today's photographs show the tower mill at Heckington, Lincolnshire. It was built in 1830 as a five-sailed windmill driving three pairs of stones, and milled grain for 60 years until the cap and sails were destroyed by wind in 1890. However, in 1891 an enterprising man bought the eight-sailed top of the defunct Tuxford windmill and matched it up with the remaining stump at Heckington. He set the mill to work again and it continued until 1946, also powering a circular saw-mill! Since that time it has seen restoration by enthusiasts, and in recent years has been open to the public.

You might wonder why my images don't show the full splendour of those eight sails. Well, the fact is that behind the windmill (to windward) is a an absolute eye-sore of stored bales of plastic and cloth, gas cylinders, derelict buildings and parked lorries. Not the most photogenic foreground for this venerable and unique structure!

photograph and text (c) T. Boughen

Top Image
Camera: Olympus E510
Mode: Aperture Priority
Focal Length: 22mm (44mm/35mm equiv.)
F No: f8
Shutter Speed: 1/250
ISO: 100
Exposure Compensation: -0.3 EV
Image Stabilisation: On

Bottom Image
Camera: Olympus E510
Mode: Aperture Priority
Focal Length: 14mm (28mm/35mm equiv.)
F No: f7.1
Shutter Speed: 1/400
ISO: 100
Exposure Compensation: -0.3 EV
Image Stabilisation: On