| http://www.w3.org/ns/prov#value | - rdly opening ball receiving socket, and a draft ball attached to a draft vehicle and received in the socket, the device including interconnectedlocking plates which overlie portions of the hitch and underlie portions of the draft ball to restrict relative vertical movement of the ball and the socket. 5 Claims, 4 Drawing Figures 2/1963 Great Britain 280/507 TRAILER HITCH ANTI-BREAKWAY DEVICE FIELD
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