Equalizing spring bolster for railroad cars

Claim 1

A RAILROAD CAR TRUCK, INCLUDING WINDOWED SIDE FRAMES, A SPRING PLANK EXTENDING THEREACROSS INTO THE WINDOWS, THE BEARING SPRINGS IN THE WINDOWS, EXTENDING UPWARDLY FROM EACH END OF THE SPRING PLANK, A PAIR OF BOLSTER HALF SECTIONS, EACH PIVOTED AT ITS LOWER END ON THE SPRING PLANK AND EXTENDING DIAGONALLY UPWARDLY TO PENETRATE ONE OF THE WINDOWS AT ITS UPPER END AND TO REST UPON THE SPRINGS IN THE WINDOWS, A PIVOT PIN EXTENDING THROUGH THE BOLSTER SECTIONS WHERE THEY INTERSECT, A SADDLE, RESTING UPON AT LEAST ONE OF THE BOLSTER SECTIONS, A CENTER PLATE CARRIED THEREBY, FLANGES EXTENDING DOWNWARDLY FROM THE SADDLE, SLOTTED TO RECEIVE AND SUPPORT THE ENTIRE LOAD OF THE CAR ON THE TRUCK AND SO POSITIONED AS TO POSITIVELY PREVENT THE APPLICATION OF LOAD PRESSURE ON THE CENTER PLATE.