US Patent 11299380 Convertible carriage

A convertible carriage is provided. The convertible carriage includes a carriage frame, a support arrangement, a shaft, and a retaining arrangement. The support arrangement includes an elongate slot and is positioned on the carriage frame. The shaft may carry a tine and is moveable along the elongate slot at least in a vertical dimension. The retaining arrangement may selectively engage with the elongate slot. When the retaining arrangement is engaged with the elongate slot, a movement of the shaft is limited by the retaining arrangement with a boundary defined at least by the retaining arrangement. When the retaining arrangement is removed from the elongate slot, the shaft is allowed to float in the elongate slot.