Torsion bar adjusting device

A torsion bar adjusting device for insertion in the rear torsion bar suspension system of a car wherein said system includes two axially aligned independent torsion bars extending in directions generally parallel to the rear wheel axes ahead of the rear wheels within a torsion bar housing tube fixed to the frame of the car with the inner ends of the torsion bar secured to the housing tube and their oppositely extending outer ends secured to rear wheel supporting spring plates respectively, so that up and down movement of each rear wheel is opposed by a twisting reaction torque from its associated torsion bar, said device comprising, in combination:

• (a) a frame structure including a collar having an elongated slot parallel to its axis in its side wall;
• (b) first and second axially aligned torsion bar end receiving sockets rotatable within said collar and having integral radially outwardly extending arms passing through said slot;
• and
• (c) First and second arm engaging means on said frame each being individually adjustable to move an associated arm relative to said frame and thereby impart a rotation to the integral socket portion from which the arm extends within said collar through a number of degrees within the width of said slot
• whereby a short center section of said housing tube in the suspension system of said car can be cut out and the collar of said device secured to the housing tube in place of said section with the inner ends of said torsion bars being received in opposite ends of said collar and respectively secured in said first and second torsion bar end receiving sockets, operation of said arm engaging means imparting a twisting force into the torsion bars to thereby enable adjustment of the spring force provided by said torsion bar suspension system to each of the rear wheels of the car respectively.