OCR Text |
Show WATER TROUGH IS AUTOMATIC Receptacle Fills Itself as Often as Emptied, but Never Overflows-Valve Overflows-Valve Does Work. A watering trough which will fill M often as emptied but will not overflow over-flow Is shown In the Illustration. The trough hangs from a spring arm, which Is mounted on the water pipe. When the trough becomes neurly filled with Automatic Watering Trough. water the weight forces the valve stem down and shuts off the supply. Before the water In the trough Is completely exhausted, the spring arm, no longer long-er held down by the weight, lifts sufficiently suf-ficiently to raise the valve and start the flow. |