JGR Class 5680

JGR Class 5680
JGR 172 (later 5682) at an unknown date
Technical specifications
Serial number(s)	2 – 5
Manufacturer(s)	JGR's Kobe Works
Build date	1895
Total produced	4
Classification	4-4-0
Dimensions	14,227 mm × 2,334 mm × 3,658 mm
Rail gauge	3 ft 6 in (1,067 mm)
Valve gear	Joy
Cylinders	2
Boiler pressure	9.8 kg/cm²
Fuel type	Coal
Heating area	81.3 m²
Service information
Years in-service	1895 – 1922
Running numbers	5680 – 5683 (originally 170 – 173)
Disposition details
Preserved	None
Number scrapped	4

The JGR Class 5680 (originally the JGR Class AJ) was a 4-4-0 American-type steam locomotive operated by the Japanese Government Railways from 1895 to 1922.

History

The Class 5680 was an early steam locomotive operated in Japan. The type was ordered by the JGR, with four locomotives manufactured at the JGR's own Kobe Works in 1895. These were classified as the Class AJ, numbered 170 through 173 and entered service the same year. The locomotives were manufactured under the guidance of Richard Francis Trevithick (a grandson of Richard Trevithick), an inspector at Kobe Works at the time. The locomotives were then reclassified the Class D7 in 1898. Many of the locomotives's parts were imported from the United Kingdom.

The locomotives were reclassified as the Class 5680 in 1909 when a formal rule regarding standardized classification of locomotives was enacted; the locomotives were thus renumbered 5680 through 5683. The locomotives were mainly used around Tokyo, particularly in the Sōbu area; the locomotives were moved to Sendai near the end of their lives. The locomotives were retired in 1922, along with many other British-style locomotives manufactured in-house by the JGR. No Class 5680s have been preserved.