US PATENT SUBCLASS 238 / 133
.~.~ Triple head

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

122  DF  RAILS {20}
132  DF  .~ Reversible {1}
133.~.~ Triple head

DEFINITION

Classification: 238/133

The rail-heads are carried by three webs radiating from a central axis and spaced one hundred and twenty degrees apart. Any one of these heads may be placed upward for traction purposes.