PERFECTIONNEMENT AUX ABREUVOIRS A TUBE POUR ANIMAUX

1. An automatic drinking trough for animals, of the type comprising a tube (5) carried by a support (2) and protruding with its lower end into a bowl (3) carried by the same support (2), said tube (5) carrying a rigid stem (17) placed therein, the upper end of said stem (17) carrying a poppet valve (12) for sealing the water inlet and a spring (20) for biasing said valve (12) against its seat (11), characterized by the fact that said tube (5) is a tube made of a flexible material which is fitted over the water feed pipe (13, 13bis), said flexible tube (5) comprising interiorly two circular shoulders (11, 16) connected together by a central bore (14) along the full inside length of which extends said rigid stem (17), said stem carrying said valve (12) resting on the upper circular shoulder (11), and an adjustable stop (18, 19) for said spring (20) resting against the lower shoulder (16), whereby the valve (12) is maintained against its seat (11) by the traction exercised by the spring (20), so that any deformation of the flexible tube (5) will cause said valve (12) to be raised away from its seat (11).