Knuckle structure to ensure failure at knuckle throat portion
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United States of America Patent
Stats
-
Mar 14, 1989
Grant Date -
N/A
app pub date -
Jan 7, 1988
filing date -
Jan 7, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved knuckle design for railway couplers wherein the knuckle pin is supported midway between its ends to prevent premature failure of the pin. The kidney core which forms the hollow cavity in the throat portion of the knuckle is isolated from the core which forms the pivot pin hole during casting and is provided with a lateral projection which forms an opening in the side wall of the hollow knuckle throat portion. This insures that under severe stress conditions, the coupler will fracture at the throat portion of the knuckle rather than possibly at the coupler head itself.
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