Steering linkages

Abstract

A steering linkage for a wheeled trailer vehicle or implement comprising a frame, in which a bar is slidably mounted in a transverse frame member, the said bar having a rack formed thereon and in mesh with a pinion rotatble by a steering, or link, rod to impart sliding motion to the bar in response to movement of the steering rod, the bar being linked to steerable wheels of the vehicle or implement.

I claim: 
     
       1. In a steering linkage for a trailer vehicle or implement comprising a frame and steerable wheels mounted on the frame wherein the improvement comprises a transverse frame member, a bar slidably mounted on the said transverse frame member, a rack formed on the said bar, a pinion rotatably mounted in the transverse frame member in mesh with the said rack, means for rotating said pinion comprising a link .[.rod, said link rod.]. .Iadd.means .Iaddend.interconnected with said pinion, the rotation of the pinion imparting sliding motion to the bar, and means for linking the bar and the steerable wheels whereby sliding motion of the bar provides rotary motion to the steerable wheels, a forwardly extending frame member, means for connecting said forwardly extending frame member to said transverse frame .[.at the mid-point of said transverse frame,.]..Iadd., .Iaddend.a cross-member adapted to be connected to a trailer hitch, and means for pivotally connecting said forwardly extending frame member to said crossmember. 
     
     
       2. The improvement as claimed in claim 1, .Iadd.wherein said link means is in the form of a link rod and .Iaddend.further comprising means for interconnecting said link rod to said cross-member comprising an arm fixedly connected to said cross-member at one end of said arm, and pivotably connected to said link rod at the other end of said arm. 
     
     
       3. The improvement as claimed in claim 2, wherein said link rod is interconnected with said pinion by an additional arm, said additional arm pivotably mounted to said link rod at one end of said additional arm, and fixedly connected to said pinion at the other end of said arm. 
     
     
       4. The improvement as claimed in claim 3, further comprising an extending frame rearwardly extending from one end of said transverse frame, a steerable wheel mounted on said extending frame, and means for linking said steerable wheel on said extending frame to said bar.