Draft control and tail beam device for ground working discer typ

Details Draft control and tail beam device for ground working discer typ Draft control and tail beam device for ground working discer typ

1977-09-21

1980-06-24

Johnson, Richard J.

Earth working

Diverse tools

Including vertical, longitudinally oriented disc or blade

172261, 172291, 172567, 172578, A01B 2500, A01B 6104

Patent

active

042090679

ABSTRACT:
A cultivating implement such as a discer is provided with a coulter disc engageable with the ground and secured to the tail beam with the depth being preset by the hydraulic setting of the main disc gang. A fluid operator is included at a preset pressure and normally is fully extended until an obstruction is reached at which time the preset pressure is exceeded and the fluid operator or ram unloads and allows the coulter to raise up and clear the obstruction. Once cleared, the pressure in the ram returns the coulter to the preset depth. This coulter assists in maintaining the angle of travel of the discer, particularly on side hills, together with the pivoted rudder wheel assembly. In this invention the rudder wheel assembly is normally held against a stop at the desired angle, by a further ram or fluid operator instead of a spring and which only unloads during turning to allow rudder wheel assembly to break away. The use of a ram overcomes the usual difficulties associated with springs in which little or no resistance is encountered at the beginning of the extension of the spring.

REFERENCES:
patent: 2754743 (1956-07-01), Ryden
patent: 3219126 (1965-11-01), Lymburner
patent: 3477516 (1969-11-01), Sweet
patent: 3481407 (1969-12-01), Arnold
patent: 3601202 (1971-08-01), Steffe
patent: 3752092 (1973-08-01), Vinyard
"Disktillers and Rod Weeders", Publication of John Deere, 1972, pp. 16-19.

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