Abstract: Improved carriage for selectively engaging and disengaging a load for transporting same from one location to another such that the carriage upon full engagement with the load is positively coupled thereto for effecting its transport with minimal risk. To this end, the carriage is advantageously made up of a pair of guide blocks, a pair of actuating rods and a biased pivotally mounted pawl. Each actuating rod is biasingly mounted in its associated guide block. All of the aforementioned elements on the carriage cooperate with a pair of recessed guide plates and an upstanding lug as affixed to any load to be transported. Once the carriage is fully engaged with any load, resilient pads are provided on the carriage to assure positive coupling engagement between the engaged load and the carriage. After transporting any coupled load, the load is also provided with a pair of sliding rods for initially engaging the base or support to which the load has been transported.