Automatic reset stone protection
The ST has been designed to cultivate in a wide variety of
soils, including shallow, rocky and stony soils. A heavy duty
spring mechanism protects the cultivator when encountering
large rocks, and the pivoting geometry enables the tine leg to
pivot upwards and rearwards to skim over the obstacle before
immediately re-engaging at the preset cultivation depth. In
addition to the spring mechanism, the leg is protected by a shear
bolt – which may be fitted in two positions to provide differing
penetration and tine operating angles – a real benefit in the
hardest soils.