Arrangement for holding during transport on a vehicle a number of elongated heavy subjects, especially logs

Claim 1

A MECHANISM FOR HOLDING LOGS DURING TRANSPORT BY A VEHICLE COMPRISING: (A) A BROAD-BAED, U-SHAPED FRAME, (B) A PAIR OF ARMS, EACH HAVING ONE END THEREOF PIVOTED TO THE UPPER ENDS OF THE LEGS OF SAID U-SHAPED FRAME AND EACH BEING OF SUFFICIENT LENGTH TO SPAN SUBSTANTIALLY THE ENTIRE OPENING AT THE TOP OF SAID U-SHAPED FRAME, (C) A FIRST PAIR OF HYDRAULIC UNITS PIVOTALLY CONNECTED TO THE BASE OF SAID U-SHAPED FRAME AND TO SAID ONE END OF EACH OF SAID ARMS, AND ADAPTED TO PIVOT SAID ARMS FROM A SUBSTANTIALLY HORIZONTAL POSITION TO A SUBSTANTIALLY VERTICAL POSITION, (D) A SECOND PAIR OF HYDRAULIC UNITS FIXEDLY ATTACHED TO EACH OF SAID ARMS AND RUNNING PARALLEL THERETO, (E) A PAIR OF CHAINS EACH HAVING ONE END THEREOF ATTACHED TO THE FREE ENDS OF THE PISTON RODS OF SAID SECOND PAIR OF HYDRAULIC UNITS AND THE OTHER ENDS ATTACHED TO THE BASE OF SAID U-SHAPED FRAME ADJACENT THE CENTER OF SAID FRAME, SAID CHAINS BEING OF A LENGTH SUCH THAT ACTUATION OF SAID SECOND HYDRAULIC MEANS CAUSES SAID CHAINS TO PULL SAID ARMS TOWARD THEIR HORIZONTAL POSITION WHEN LOGS ARE RESTING AGAINST SAID CHAINS, AND (F) AN ELONGATED, FLOATING SUPPORT ELEMENT SUSPENDED FROM A SECOND PAIR OF CHAINS WHICH ARE ATTACHED TO SAID ARMS NEAR THEIR PIVOTED ENDS, SAID SECOND CHAINS BEING OF A LENGTH SUCH THAT SAID FLOATING SUPPORT IS BELOW THE TOP OF THE BASE OF SAID U-SHAPED FRAME WHEN SAID ARMS ARE IN THEIR HORIZONTAL POSITION BUT ABOVE THE TOP OF THE BASE OF SAID U-SHAPED FRAME WHEN SAID ARMS ARE IN THEIR VERTICAL POSITION.