Chocking device for vehicle wheels

Claim 1

A VEHICLE HANDLING CONVEYOR COMPRISING A FIXED FRAME MEMBER, A SUPPORTING TRACK CARRIED BY SAID FRAME MEMBER, A PLATFORM MEMBER SHIFTABLE UPON SAID TRACK AND ADAPTED TO RECEIVE THE WHEELS OF A VEHICLE, A SLIDABLE MEMBER AT ONE END OF SAID PLATFORM MEMBER TO RECEIVE AND FULLY SUPPORT A LEADING WHEEL OF A VEHICLE AS THE VEHICLE REACHES A CENTRAL POSITION ON SAID PLATFORM MEMBER AND TO BE MOVED ON SAID PLATFORM MEMBER BY ENGAGEMENT WITH SAID WHEEL, A FIRST CHOCKING MEMBER ON SAID SLIDABLE MEMBER AT THE END REMOTE FROM THE ONCOMING WHEEL FOR ENGAGEMENT BY SAID WHEEL TO SHIFT SAID SLIDABLE MEMBER ON SAID PLATFORM MEMBER, A SECOND CHOCKING MEMBER AT THE OTHER END OF SAID SLIDABLE MEMBER, MEANS TO CAUSE SAID SECOND CHOCKING MEMBER TO PIVOT UPWARDLY TO AN OPERATIVE POSITION BY THE MOTION OF THE SLIDABLE MEMBER AS THE VEHICLE MOVES ON THE PLATFORM MEMBER, THE WHEEL BEING ENGAGED BETWEEN THE FIRST AND SECOND CHOCKING MEMBERS TO PREVENT MOVEMENT ON THE SLIDABLE MEMBER, SUPPORT ROLLERS ON SAID SLIDABLE MEMBER, GUIDE RAILS ON THE PLATFORM MEMBER, AND ADAPTED TO RECEIVE SAID SUPPORT ROLLERS ON THE SLIDABLE MEMBER TO SUPPORT THE SLIDABLE MEMBER AND COOPERATING LOCKING PARTS ON THE PLATFORM MEMBER AND COOPERATING LOCKING PARTS ON THE PLATFORM MEMBER AND ON THE SLIDABLE MEMBER RESPECTIVELY, AND COOPERATING MEANS ON SAID PLATFORM MEMBER AND SAID FIXED FRAME MEMBER CONSTRUCTED AND ARRANGED TO COME INTO OPERATIVE CONTACT TOWARD THE END OF THE SHIFTING MOVEMENT OF THE PLATFORM MEMBER, TO BRING SAID LOCKING PARTS INTO LOCKING ENGAGEMENT.