(19)

(11)

EP 2 747 539 A1

(12)

(43) Date of publication: 02.07.2014 Bulletin 2014/27 (21) Application number: 12754082.1 (22) Date of filing: 20.08.2012

(51) International Patent Classification (IPC):  A01B 63/16(2006.01) (86) International application number: PCT/GB2012/052025 (87) International publication number: WO 2013/030534 (07.03.2013 Gazette 2013/10)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 26.08.2011 GB 201114746 (71) Applicant: Brock, Arthur Philip Harvey Thaxted Essex CM6 2RH (GB)	(72) Inventor: Brock, Arthur Philip Harvey Thaxted Essex CM6 2RH (GB) (74) Representative: Fitchett, Stuart Paul  Saunders & Dolleymore LLP 9 Rickmansworth Road Watford Hertfordshire WD18 0JU Watford Hertfordshire WD18 0JU (GB)