Torsion bar assembly for mechanical swing

Claim 1

IN A SWING SUSPENSION, A HORIZONTALLY ARRANGED SUPPORT HOUSING HAVING A PAIR OF SPACED APART END WALL SUPPORTS; A HORIZONTALLY ARRANGED TORSION BAR MADE OF STIFF, RODLIKE MATERIAL AND HAVING ITS OPPOSITE ENDS EACH ROTATABLY CONNECTED TO ONE OF SAID END WALL SUPPORTS, THE CENTRAL PORTION OF SAID TORSION BAR BEING BENT INTO AN UPWARDLY OPENING, DEEP U-SHAPE WHOSE LEGS ARE SUBSTANTIALLY VERTICALLY ARRANGED AND WHOSE BASE IS HORIZONTALLY ARRANGED; A MOTOR SUPPORTED IN SAID HOUSING; THE MOTOR HAVING A DRIVEN RECIPROCATING LEVER EXTENDING DOWNWARDLY THEREFROM AND BEING CONNECTED TO THE CENTER OF SAID BASE FOR RECIPROCATING SAID TORSION BAR ABOUT ITS ROTATABLY CONNECTED ENDS; A PAIR OF ELONGATED, UPRIGHT SWING SUPPORT RODS, EACH ARRANGED ADJACENT ONE OF SAID LEGS; INTERLOCKING MEANS BETWEEN THE UPPER END OF A SUPPORT ROD AND THE TORSION BAR AT SPACED POINTS LOCATED ON THE RESPECTIVE LEG, SAID SUPPORT RODS EACH EXTENDING DOWNWARDLY BELOW SAID BASE AND HAVING ITS LOWER END LOCATED AT A CONSIDERABLE DISTANCE BENEATH THE TORSION BAR WITH THE LOWER END BEING FORMED WITH MEANS FOR CONNECTION TO A SWING.