Wind vane position sensing device

Claim 1

IN A WIND VANE OF THE CLASS HAVING A CONTROLLED MEMBER ACTUATED BY A SENSING DEVICE RESPONSIVE TO WIND DIRECTION, COMPRISING A VANE, A VANE ARM FIXED AT ONE END TO SAID VANE, A COUNTERWEIGHT FIXED AT THE END OPPOSITE OF SAID VANE TO SAID VANE ARM, A VANE SHAFT NORMAL TO SAID VANE ARM FOR CARRYING SAID VANE ARM, AND POSITIONED AT THE CENTER OF GRAVITY OF THE VANE ARM, COUNTERWEIGHT AND VANE, A SENSOR BOX, A BEARING SUPPORT IN SAID SENSOR BOX, A ROTATABLE SPINDLE IN SAID BEARING SUPPORT, SAID VANE SHAFT MOUNTED AT ITS LOWERMOST END TO SAID SPINDLE IN SAID SENSOR BOX, A FLANGE PROVIDED AT THE LOWER END OF SAID VANE SHAFT AND ROTATABLE WITH SAID SHAFT, AN INTERCHANGEABLE SENSOR ACTUATING RING WITH A SELECTED SENSING ANGLE MOUNTED ON SAID FLANGE, SAID RING COAXIALLY MOUNTED WITH RESPECT TO SAID SHAFT, A MAGNET OF PREDETERMINED LENGTH SUITED TO THE DESIRED SENSING ANGLE CARRIED WITHIN SAID RING, WITH ITS LONGITUDINAL AXIS BEING DISPOSED HORIZONTALLY ALONG THE PERIPHERY OF SAID RING, A PLURALITY OF REED SWITCHES MOUNTED IN SAID SENSOR BOX ADJACENT TO AND OUT OF MECHANICAL CONTACT WITH SAID SENSOR ACTUATING RING, AND MOUNTED IN A CIRCLE COAXIALLY OF SAID RING, ELECTRICAL CONNECTIONS FROM SAID SWITCHES TO A CONTROLLED MEMBER WHEREBY SAID CONTROLLED MEMBER IS OPERATIVE IN RESPONSE TO VARIATIONS IN WIND DIRECTION CAUSING POSITIONING OF SAID MAGNET ADJACENT TO SAID REED SWITCHES.