Equalizing spring bolster for railroad cars

Claim 1

IN A RAILROAD CAR TRUCK, A PAIR OF PARALLEL, SPACED, WINDOWED SIDE FRAMES, A SPRING PLANK, THE ENDS OF WHICH ARE BOTTOMED IN THE WINDOWS, LOAD CARRYING SPRINGS IN THE WINDOWS, A SCISSORS BOLSTER PIVOTALLY SUPPORTED ON EACH SIDE FRAME FOR HORIZONTAL MOVEMENT, EXTENDING DIAGONALLY UPWARD TO REST UPON THE LOAD CARRYING SPRINGS IN THE OPPOSITE SIDE FRAME, A TRANSOM BOLSTER, THE ENDS OF WHICH REST ON THE SPRING SUPPORTED ENDS OF THE SCISSORS BOLSTERS, A CENTER PLATE CARRIED BY THE TRANSOM BOLSTER, THE SCISSORS BOLSTERS, WHERE THEY CROSS AT THE CENTER OF THE TRUCK BEING PIVOTED, THE TRANSOM BOLSTER BEING VERTICALLY SLOTTED TO RECEIVE THE SCISSORS BOLSTER PIVOT, TO PERMIT VERTICAL MOVEMENT OF, WHILE INHIBITING HORIZONTAL MOVEMENT THEREOF, THE TRANSOM BOLSTER BEING APERTURED ADJACENT THE ENDS THEREOF, LOAD CARRYING BOSSES ON THE SCISSORS BOLSTERS, NEAR THE SPRING SUPPORTED ENDS THEREOF, PROJECTING THROUGH THE APERTURES IN THE TRANSOM BOLSTER, A CAR BOLSTER HAVING LOAD APPLYING ELEMENTS ADAPTED TO REST UPON THE LOAD CARRYING BOSSES, A CENTER PLATE ON THE CAR BOLSTER INTERLOCKING WITH THE CENTER PLATE ON THE TRANSOM BOLSTER AND SO SPACED THAT NO VERTICAL LOAD CAN BE CARRIED BY THE CENTER PLATES.