JOHN M PAUL
Engineers in Southampton, PA

4192239, Mar 11, 1980

Jan 3, 1978

5/866483

John M. Paul - Holland PA

The Budd Company - Troy MI

B61F 304, B61F 506, B61F 510, B61F 552

105199R

A pair of mechanical springs are disposed on an air spring on each side of a truck carrying a car body. A wide plank disposed between the pairs of mechanical springs and each of the air springs is pivoted to permit vertical movements without tilting of the air springs when the mechanical springs are deflected laterally. Shock absorber means are connected between the car body and bolster along the longitudinal axis of the bolster to control lateral shocks as when the mechanical springs are laterally deflected. Mechanical springs in railway cars have employed pairs of mechanical springs in series with pneumatic springs. Multiple mechanical springs, in series with pneumatic springs, have included a heavy outer coil spring and an inner lighter coil spring coaxially nested with the heavy outer spring used to keep the stress levels on the individual springs relatively low. This arrangement is illustrated in U. S. Pat. 3,491,702 to A. G.

4029021, Jun 14, 1977

Dec 24, 1975

5/644274

John M. Paul - Holland PA

The Budd Company - Troy MI

B61F 506, B61F 510, B61F 514, B61F 550

105199R

A railway car suspension which includes a coil and pneumatic spring arrangement wherein the pneumatic spring means is disposed lowermost on a truck frame to absorb vertical jolts and absorption of lateral loads, together with stabilizing means between the upper end of the pneumatic spring means and the spring supporting body; and in which the coil spring means is disposed uppermost and arranged to take full loading in case of failure of the pneumatic spring means.