Animal watering device

Claim 1

A WATERING DEVICE FOR BIRDS OR ANIMALS, ADAPTED TO BE CONNECTED TO A WATER SUPPLY PIPE UNDER LOW PRESSURE, AND COMPRISING A SUPPORT, A PAN MOVABLE ON THE SUPPORT BETWEEN A HIGHER EXTREME POSITION TO WHICH IT IS NORMALLY BIASED, AND A LOWER EXTREME POSITON, AN INLET MEMBER ADAPTED TO BE CONNECTED TO THE SUPPLY PIPE, A RESILIENT FLEXIBLE TUBE CONNECTED AT ONE END TO THE INLET MEMBER AND OPENING AT THE OTHER INTO THE PAN, A FIXED MEMBER ON THE SUPPORT AND A PRESSURE MEMBER MOVABLE WITH THE PAN AND WITH RESPECT TO THE FIXED MEMBER, THE TUBE IN ONE OF THE EXTREME POSITIONS BEING SMOOTHLY CURVED WITH ITS BORE OPEN AND THE PRESSURE MEMBER DURING MOVEMENT OF THE PAN TOWARDS THE OTHER EXTREME POSITION ACTING, IN CO-OPERATION WITH THE FIXED MEMBER, ON THE TUBE TO INDUCE INTERNAL STRESS IN THE TUBE AND THEREBY BEND IT ABOUT A DIAMETER OF THE TUBE REMOTE FROM THE PLACES OF CONTACT OF THE TUBE WITH THE PRESSURE MEMBER AND THE FIXED MEMBER, AND IN SAID OTHER EXTREME POSITION THE INTERNAL STRESS IN THE TUBE BEING SUFFICIENT TO BUCKLE AND FLATTEN THE TUBE AND CLOSE ITS BORE, THE BORE OF THE TUBE RE-OPENING BY THE RESILIENCE OF THE TUBE WHEN THE PAN RETURNS TO SAID ONE EXTREME POSITION.