US PATENT SUBCLASS 238 / 252
.~.~ Slotted bolt locks

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

151  DF  RAIL JOINTS {28}
243  DF  .~ Splice bars {18}
252.~.~ Slotted bolt locks

DEFINITION

Classification: 238/252

Two splice-bars with an auxiliary slotted locking-plate which engages the bolt-heads. These plates may slide vertically or horizontally.