Overload controlled drilling mud treatment system

Claim 1

IN A MUD DILUTION APPARATUS, THE COMBINATION OF A PRIME MOVER, A MUD PUMP HAVING A MUD INLET AND A MUD OUTLET AND A DRIVE SHAFT, A WATER PUMP HAVING A DRIVE SHAFT, A WATER INLET AND A WATER OUTLET, MEANS COMMUNICATING THE OUTLET OF SAID WATER PUMP WITH THE INLET OF SAID MUD PUMP, A MUD SUPPLY LINE CONNECTED TO THE INLET OF SAID MUD PUMP, A MECHANICAL SCREEN COMPRISING A HOUSING HAVING A MUD INLET IN COMMUNICATION WITH THE OUTLET OF SAID MUD PUMP, SAID HOUSING ALSO HAVING A MUD OUTLET, A SCREEN ELEMENT PROVIDED IN SAID HOUSING BETWEEN SAID MUD INLET AND MUD OUTLET THEREOF, SAID SCREEN ELEMENT BEING ADAPTED FOR EXTRACTION OF GRANULAR PARTICLES FROM MUD PASSING THERETHROUGH, A ROTARY SCRAPER PROVIDED IN SAID HOUSING FOR CLEANING SAID SCREEN ELEMEMT, MEANS OPERATIVLEY CONNECTING SAID ROTARY SCRAPER TO SAID DRIVE SHAFT OF SAID MUD PUMP, A BY-PASS LINE COMMUNICATING THE OUTLET OF SAID WATER PUMP WITH THE MUD OUTLET OF SAID MECHANICAL SCREEN HOUSING, MEANS OPERATIVELY CONNECTING THE DRIVE SHAFT TO SAID WATER PUMP TO SAID PRIME MOVER, AND OVERLOAD DISRUPTABLE MEANS OPERATIVELY CONNECTING THE DRIVE SHAFT OF SAID MUD PUMP TO SAID PRIME MOVER, WHEREBY WATER MAY CONTINUE TO BE SUPPLIED TO THE MUD OUTLET OF SAID HOUSING BY SAID WATER PUMP WHEN SAID OPERATIVE CONNECTING MEANS BETWEEN SAID PRIME MOVER AND SAID MUD PUMP DRIVE SHAFT ARE DISRUPTED BY OVERLOAD OF SAID ROTARY SCRAPER.