US 5,702,012 AGranted

Rotary drawbar assembly for a railway freight car

AssigneeWestinghouse Air Brake Company

InventorWajih Kanjo

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Abstract

A rotary type slackless drawbar assembly for connecting one end of a first railway freight car to an adjacently disposed end of a second railway freight car in a substantially semi-permanent fashion. Such drawbar assembly includes a rear block member having a substantially flat front face portion which is disposed in a generally vertical direction. A first spherically shaped cavity is formed in a center of the front face portion of such rear block member. A ball-like member has a first portion of an outer surface thereof disposed in such first cavity. An elongated drawbar member is connected at a first end thereof to a radially opposed second portion of such ball-like member. There is a generally U-shaped front block member which includes a substantially flat inner face portion disposed in a generally vertical direction and a second spherically shaped cavity is formed in such flat inner face portion of such front block member. A second portion of an outer surface of the ball-like member located closely adjacent said drawbar member is disposed in such second cavity formed in this inner face portion of such front block member.

A rotary slackless drawbar assembly for connecting one predetermined end of a first railway freight car to an adjacently disposed end of a second railway freight car in a substantially semi-permanent fashion, said rotary slackless drawbar assembly comprising:

(a) a rear block member having a substantially flat front face portion, at least said substantially flat front face portion of said rear block member being disposed in a generally vertical direction, said rear block member has a substantially rectangular shape and includes a substantially vertically disposed and centrally located rib-like member extending outwardly from said back surface thereof;
(b) a first spherically shaped cavity formed substantially in a center of said substantially flat front face portion of said rear block member, said first spherically shaped cavity having a predetermined radius of curvature;
(c) a ball-like member having a first portion of an outer surface thereof disposed in said first spherically shaped cavity formed in said substantially flat front face portion of said rear block member, said first portion of said outer surface of said ball-like member having a predetermined radius of curvature;
(d) an elongated drawbar member connected at a first end thereof to a portion of said ball-like member disposed radially opposite said first portion of said ball-like member;
(e) a generally U-shaped front block member having a substantially flat inner face portion, at least said substantially flat inner face portion of said generally U-shaped front block member being disposed in a generally vertical direction;
and
(f) a second spherically shaped cavity formed substantially in a center of said substantially flat inner face portion of said front block member, a second portion of an outer surface of said ball-like member located closely adjacent said elongated drawbar member being disposed in said second spherically shaped cavity formed in said substantially flat inner face portion of said front block member, each of said second spherically shaped cavity and said second portion of said outer surface of said ball-like member have a predetermined radius of curvature.

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Abstract

Claims17