Nesseth Clifford A: Manure storage pit pump. Mentag Robert G, October 28, 1975: US3915594 (59 worldwide citation)

A manure storage pit pump for attachment to a tractor having a power output shaft and a hitch means for loading manure into a liquid manure transfer tank mounted on a vehicle such as a spreader vehicle or a truck, or for agitating manure in a storage pit. The pump includes a support frame for detach ...