US PATENT SUBCLASS 238 / 223
.~.~ Head section

Current as of: June, 1999
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238 /   HD   RAILWAYS: SURFACE TRACK

151  DF  RAIL JOINTS {28}
218  DF  .~ Tread bridge {7}
223.~.~ Head section {1}
224  DF  .~.~.~> Saddle

DEFINITION

Classification: 238/223

A tread member including a rail-head with a central or a single side shank is inserted between the abutting rail ends.