Direction shift control for connected vehicle undercarriages

Claim 1

In a direction control system for a railway vehicle, comprising (a) a front undercarriage and a rear undercarriage, with each undercarriage pivotally mounted on said vehicle on spaced apart vertical axes; (b) each said undercarriage mounting guide wheels on each side thereof adjacent each corner for rotation about vertical axes; (c) a directional guide wheel pivoted on the axis of each of said guide wheels and mounted for rotation about a vertical axis; (d) first lever means interconnecting each of said directional guide wheels with its respective guide wheel; (e) linkage means interconnecting said first lever means on each said undercarriage for the simultaneous pivotal movement thereof with said directional guide wheels around the vertical axes of said guide wheels; the improvement characterized by (f) connecting means connecting said linkage means of each of said front and rear undercarriages; (g) said connecting means including a second lever positioned on each said undercarriage and connected to said linkage means, and a rod interconnecting said second levers; and (h) said connecting means causing all said directional guide wheels of said front and rear undercarriages to pivot from one position to another simultaneously.