This section is from the book "A Treatise On Beverages or The Complete Practical Bottler", by Charles Herman Sulz. Also available from Amazon: A Treatise On Beverages.
The fountain rinser will be found useful where a large business is carried on. It is simple and effective, consisting of a number of tubes connected with the hydrant by a main. In each tube there is a valve which admits and shuts off the water. The fountains are inverted, and are so placed that one of these tubes passes into the interior through the bung. In this position the fountain rests on a collar which has provision for drainage, and is so connected with the valve that the weight of the fountain upon it causes the flow of the water against the whole interior of the fountain. The water flows out as fast as it runs in, carrying with it any deposit from the lining of the fountain. The machine is manufactured by the firm of John Matthews in New York.