Abstract: A mechanical coupling for rotary devices, whereby a wind vane or other rotary tool, can be replaced without the use of a tool. In a preferred embodiment, the invention provides a coupling arrangement for a rotary device and a spindle supported for rotation, the coupling being enabled by a resilient body which acts upon a spheroidal locking member such as a ball bearing. In particular, the present invention provides a coupling arrangement for a wind vane or an anemometer rotating body comprising impeller cups, which impeller cups and rotating body are required for removable fitment, without the use of tools.

Abstract: The present invention relates to metrological rotary devices, such as anemometers and the like. Specifically, the present invention relates to a mechanical coupling for the same, whereby an anemometer cup-rotor or like device, can be replaced without the use of a tool. The present invention seeks to provide a coupling device which makes a mechanical coupling between a first and a second member such that the locking together and release action is positive, without likelihood of failure, and can be conducted simply and quickly without the use of a tool. Further objects of the invention are to provide couplings in which a positive axial and rotational location of shaft as first member and mating bore in a second member are obtained which do not cause damage to either of the sliding surfaces when excessive force is applied, and which are capable of transmitting a torque, such couplings being suitable for attaching a rotor to an anemometer.

Abstract: The present invention relates to rotary devices, such as wind vanes and the like. Specifically, the present invention relates to a mechanical coupling for the same, whereby a wind vane or other rotary tool, can be replaced without the use of a tool. The present invention seeks to provide a coupling device which makes a mechanical coupling between a first and a second member such that the locking together and release action is positive, without likelihood of failure, and can be conducted simply and quickly without the use of a tool. Further objects of the invention are to provide couplings in which a positive axial and rotational location of shaft as first member and mating bore in a second member are obtained without reliance on friction forces, and which do not cause damage to either of the sliding surfaces when excessive force is applied, and which are capable of transmitting a torque, such couplings being suitable for attaching a rotor to an anemometer or the fin to the shaft of a wind vane.

Abstract: The present invention relates to metrological rotary devices, such as anemometers and the like. Specifically, the present invention relates to a mechanical coupling for the same, whereby an anemometer cup-rotor or like device, can be replaced without the use of a tool. The present invention seeks to provide a coupling device which makes a mechanical coupling between a first and a second member such that the locking together and release action is positive, without likelihood of failure, and can be conducted simply and quickly without the use of a tool. Further objects of the invention are to provide couplings in which a positive axial and rotational location of shaft as first member and mating bore in a second member are obtained which do not cause damage to either of the sliding surfaces when excessive force is applied, and which are capable of transmitting a torque, such couplings being suitable for attaching a rotor to an anemometer.