Abstract: An improved animal waterer which has a stainless steel bowl formed with an upper rim in which are mounted two extending pins with heads that extend through key-shaped openings in a locking bar. The locking bar can be moved from the locked to the unlocked positions so that the bowl may be locked or unlocked from the waterer. the water valve and float are connected to the waterer with an alignment opening and nut so that the valve and float arm maintain proper alignment.

Abstract: A water volume indicator for an animal waterer which includes a balance beam of substantial mass which supports a water receptacle such that when water is removed the balance beam will pivot to open a valve to allow water to be fed into the bowl and which has a switch which is actuated by movement of the balance beam to close a circuit to actuate a timer such that the time that the valve was opened to add water can be determined. This allows the operator to determine how much water has been removed from the bowl by the horse or other animal and thus the amount of fluid intake by the animal is determined.

Abstract: An immersion water heater particularly suitable for use in connection with animal watering buckets includes a housing fixed to an end of an electrical conduit and locatable on the bottom of a watering bucket. A U-shaped metallic sheathed heating element projects from the housing into a protective shield comprising plates secured to opposite sides of the heating element by spool-shaped insulator posts received between the legs of the heating element. A temperature sensing member is attached has one end attached to the heating element exteriorly of the housing and a second end extending into the housing. A thermostat and a thermofuse are located in the housing in heat exchange engagement with the second end of the temperature sensing member, whereby in the absence of water around the heating element and temperature sensing member, heat is rapidly transmitted from the heating element through the member to the thermostat and thermofuse to deenergize the heating element.