OCR Text |
Show WATER TROUGH IS AUTOMATIC Receptacle Fills Itself as Often at Emptied, but Never Overflows-Valve Overflows-Valve Does Work. A watering trough which will nil na often as emptied but will not overflow over-flow shown In the Illustration. The trough hangs from :t spring arm, which Is mounted on the water pipe. When the trough becomes nearly filled with Automatic Watering Trough. water the weight forcos the valve stem down and shuts off the supply, llefdre the water In the trough Is completely exhausted, the spring arm no long or held down by the weight lUts suf ticicntb to raise tho valve and start the tlow |