US PATENT SUBCLASS 213 / 152
.~.~.~.~.~ Knuckle and head interengagement

Current as of: June, 1999
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213 /   HD   RAILWAY DRAFT APPLIANCES

75 R  DF  COUPLINGS {9}
77  DF  .~ Counterpart {2}
100 R  DF  .~.~ Interengaging hooks and knuckles {6}
104  DF  .~.~.~ Horizontally swinging {4}
109  DF  .~.~.~.~ Janney type {17}
152.~.~.~.~.~ Knuckle and head interengagement

DEFINITION

Classification: 213/152

Patents showing interengaging means on the knuckle and coupler head, usually to relieve the knuckle pin from strain.