Counting devices

A counting device for counting mechanical inputs comprising:

• a rotatably mounted first counting wheel arranged to rotate by a predetermined amount for every input that is to be counted;
• a second counting wheel in mechanical communication with the first counting wheel, and at least in part overlapping the first counting wheel;
• and a housing;
• whereby the mechanical communication between the first counting wheel and the second counting wheel comprises:
• a rotation mechanism configured to drive the second counting wheel a predetermined amount when a predetermined number of inputs has been reached;
• wherein the rotation mechanism comprises a first counting wheel formation configured to engage with at least one second counting wheel formation;
• and
• a rotational locking mechanism configured to prevent rotation of the second counting wheel wherein the rotational locking mechanism comprises a formation on the second counting wheel configured to engage with the housing or a first counting wheel formation;
• wherein the rotational locking mechanism is activated by the first counting wheel changing the second counting wheel from a configuration where it can rotate to a configuration where it cannot rotate;
• wherein the first counting wheel and the second counting wheel each comprise a circumferential array of counting indicia;
• wherein the first counting wheel incorporates a circumferential array of unit count indicia provided on an outer annular surface of the first counting wheel and the second counting wheel incorporates a circumferential array of tens count indicia, whereby for every input a unit count indicia is aligned with a tens count indicia that represents the number of inputs;
• wherein the units indicia and the tens indicia are configured such that a particular combination of units indicia and tens indicia is displayed;
• and
• wherein the first counting wheel moves the second counting wheel from a configuration where it can rotate to a configuration where it cannot rotate.

A counting device for counting mechanical inputs comprising:

• a rotatably mounted first counting wheel arranged to rotate by a predetermined amount for every input that is to be counted;
• a second counting wheel in mechanical communication with the first counting wheel, and at least in part overlapping the first counting wheel;
• and a housing;
• whereby the mechanical communication between the first counting wheel and the second counting wheel comprises:
• a rotation mechanism configured to drive the second counting wheel a predetermined amount when a predetermined number of inputs has been reached;
• wherein the rotation mechanism comprises a first counting wheel formation configured to engage with at least one second counting wheel formation;
• and
• a rotational locking mechanism configured to prevent rotation of the second counting wheel wherein the rotational locking mechanism comprises a formation on the second counting wheel configured to engage with the housing or a first counting wheel formation;
• wherein the rotational locking mechanism is activated by the first counting wheel changing the second counting wheel from a configuration where it can rotate to a configuration where it cannot rotate;
• wherein the first counting wheel and the second counting wheel each comprise a circumferential array of counting indicia;
• wherein the first counting wheel incorporates a circumferential array of unit count indicia provided on an outer annular surface of the first counting wheel and the second counting wheel incorporates a circumferential array of tens count indicia, whereby for every input a unit count indicia is aligned with a tens count indicia that represents the number of inputs;
• wherein the units indicia and the tens indicia are configured such that a particular combination of units indicia and tens indicia is displayed;
• and
• wherein the unit count indicia are provided on a first counting wheel indicia ring and the tens count indicia are provided on a second counting wheel indicia ring and wherein the second counting wheel at least partially overlaps the first counting wheel such that the second counting wheel indicia ring at least partially overlaps the first counting wheel indicia ring.