Automotive vehicle frame straightening device

Claim 1

IN A DEVICE OF THE CLASS DESCRIBED, (A) SPACED APART PARALLEL FIRST AND SECOND U-SHAPED GUIDE-ACTING FRAME MEMBERS EACH HAVING OPPOSED LEGS SPACED APART A SUFFICIENT DISTANCE TO RECEIVE A VEHICLE THEREBETWEEN, (B) MEANS RIGIDLY MOUNTING SAID FRAME MEMBERS IN GENERALLY HORIZONTAL POSITIONS ON A COMMON SUPPORT AND DEFINING THEREBETWEEN A U-SHAPED PASSAGEWAY, (C) MEANS FIXEDLY POSITIONED RELATIVE TO SAID FIRST FRAME MEMBER AND DEFINING A LONGITUDINALLY EXTENDED VEHICLE-SUPPORTING SURFACE PARTIALLY SURROUNDED BY SAID U-SHAPED PASSAGEWAY, (D) A SUBFRAME BRIDGING SAID FRAME MEMBERS AND MOUNTED AND GUIDED THEREON FOR MOVEMENTS LONGITUDINAL OF SAID PASSAGEWAY TO BE SELECTIVELY POSITIONED ABOUT THE PERIPHERY OF SAID VEHICLE SUPPORTING SURFACE, (E) A GENERALLY UPRIGHT BOOM MOUNTED AND GUIDED IN SAID SUBFRAME FOR RAISING AND LOWERING MOVEMENTS WITH RESPECT THERETO, (F) A FLEXIBLE CABLE ASSOCIATED WITH SAID BOOM AND ENTRAINED OVER PULLEY MEANS THEREON FOR EXTENDING AND RETRACTING MOVEMENTS, (G) POWER MEANS CARRIED BY SAID SUBFRAME FOR IMPARTING RETRACTING MOVEMENTS TO SAID CABLE, AND (H) MEANS FOR LOCKING SAID SUBFRAME IN SELECTED POSITIONS ALONG ITS PATH OF TRAVEL IN SAID PASSAGEWAY.