Slackless drawbar with gravity responsive wedge
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United States of America Patent
Stats
-
Mar 17, 1992
Grant Date -
N/A
app pub date -
May 17, 1989
filing date -
May 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drawbar coupler for a railway car having a center sill is disclosed for connecting two railway cars together in a slackless arrangement and provide uni-train service. The drawbar coupler is particularly characterized by a quick disconnect feature. The coupler includes a drawbar having at each end a vertical pin hole to receive a cylindrical pin that is held at its top and bottom end portions in a drawbar support casing that is in turn connected by weld to the center sill. Draft loads are imposed on a bearing block having curved bearing surfaces and fitted in the pin hole between the drawbar and the pin. Buff loads are transferred from the butt portion of the drawbar to a bearing block that is acted upon by a gravity actuated wedge placed between the bearing block and end wall of the support casing. Two support plates extend across the bottom of the casing and can be removed to permit removal of the vertical pin as well as the bearing block.
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