US PATENT SUBCLASS 238 / 180
.~ Flush web key

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

151  DF  RAIL JOINTS {28}
180.~ Flush web key

DEFINITION

Classification: 238/180

The key is located in the webs of the abutting rail ends and is flush with the sides of the webs over which splice-bars may be placed, or the keys alone may constitute the joint members.