US PATENT SUBCLASS 111 / 56
.~.~.~.~ Break joint

Current as of: June, 1999
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111 /   HD   PLANTING

14  DF  DRILLING {12}
52  DF  .~ Frame and planting-element arrangement {4}
53  DF  .~.~ Sectional main frame {2}
54  DF  .~.~.~ Flexible {2}
56.~.~.~.~ Break joint

DEFINITION

Classification: 111/56

(under subclass 54) Devices comprising forward and rearward sections connected by a transverse pivot and capable of a buckling action to lift certain parts of the planter from contact with the ground.

(1) Note. In the usual type the forward frame carries the seed-dispensing elements and furrow-opener, which are lifted from the ground by a buckling or breaking of the joint between the frame sections through means generally located upon the rearward frame section and comprising a lever mechanism.

SEE OR SEARCH CLASS

172, Earth Working,

325, for a break joint frame in which earth-working tools are carried on a tongue means vertically pivoted to a wheel frame.