Two-step roll ahead irrigation system

Details Two-step roll ahead irrigation system Two-step roll ahead irrigation system

1976-10-27

1978-04-18

Cohan, Alan

Fluid handling

Processes

137344, 239212, B05B 318

Patent

active

040846105

ABSTRACT:
An irrigation system is moved with an oscillating trojan bar operating against a lugged wheel. A drive pawl on the trojan bar drives the wheel forward on level ground or uphill. A hold-back pawl on the trojan bar keeps the wheel from running free when going downhill. The detent likewise contains an uphill pawl and a downhill pawl.

REFERENCES:
patent: 3766937 (1973-10-01), Lundvall et al.
patent: 3965924 (1976-06-01), Kennedy

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