Ramsey car-transfer apparatus

In railroad industry, the Ramsey car-transfer apparatus (Ramsey transfer) was a device to replace bogies on railroad cars to permit transfer of a train between railroad lines with different gauge.

The Ramsey transfer existed in a number of variations covered by several different patents. It was typically used to transfer cars between 6 ft (1,829 mm) broad gauge, 4 ft 8+1⁄2 in (1,435 mm) standard gauge and narrow gauge (usually 3 ft / 914 mm in width) track.