G&SWR 23 Class

{{one source|date=December 2016}} {{Use dmy dates|date=March 2018}} {{Use British English|date=March 2018}} {{Infobox locomotive |powertype=Steam |name = G&SWR 23 Class |image = |caption = |designer = [[Patrick Stirling (railway engineer)|Patrick Stirling]] |builder = [[Sharp, Stewart and Company]] |builddate = 1860-2 |totalproduction = 20 |whytetype = [[0-4-2]] |gauge={{track gauge|ussg}} |leadingdiameter= |driverdiameter = {{convert|5|ft|0|in|abbr=on}} |trailingdiameter ={{convert|3|ft|6|in|abbr=on}} |length = |locoweight={{convert|27|LT|2|Lcwt|abbr=on}} |wheelbase = {{convert|7|ft|2|in|abbr=on}} + {{convert|8|ft|10|in|abbr=on}} |fueltype = Coal |fuelcap = |watercap = |cylindercount= two |cylindersize = {{convert|16|x|22|in|abbr=on}} |firearea = |boilerpressure = {{convert|120|psi|MPa|2|abbr=on}} |tractiveeffort = |operatorclass= |withdrawndate=1882-1904 |disposition= All scrapped }} The [[Glasgow and South Western Railway]] (GSWR) '''23 class''' is a class of twenty [[0-4-2]] steam locomotives designed in 1860. They were by [[Patrick Stirling (railway engineer)|Patrick Stirling]]'s fourth 0-4-2 design for the railway.

== Development == The twenty examples of this class were designed by [[Patrick Stirling (railway engineer)|Patrick Stirling]] for the GSWR and were built by [[Sharp, Stewart and Company]] (Works Nos. 1196-1205, 1264–73 and 1359–60) between July 1860 and October 1862. They were numbered 23, 35, 37, 116-122, 22, 24, and 123-30.{{sfn|Baxter|1984|pages=140–141}} The members of the class were fitted with [[Steam dome|domeless]] [[boiler]]s and [[safety valve]]s over the [[firebox (steam engine)|firebox]], these were later replaced by those of [[John Ramsbottom (engineer)|Ramsbottom]] design over the centre of the boiler following a boiler explosion at [[Springhill railway station|Springhill]] in 1876.{{sfn|Baxter|1984|pages=138–140}} The original weather boards were also replaced by Stirling cabs. Eight of the class were rebuilt as [[0-4-2]]T locomotives between 1880 and 1886.

==Withdrawal == The unrebuilt locomotives were withdrawn by [[Hugh Smellie]] between 1882 and 1888. The rebuilt locomotives were withdrawn between 1890 and 1904.

== References == {{reflist}} {{refbegin}} * {{cite book| last=Baxter| first=Bertram| title=British locomotive catalogue 1825-1923, volume 4: Scottish and remaining English Companies in the LMS Group | publisher=Moorland Publishing| year=1984| location=Buxton |editor-last=Baxter |editor-first=David |isbn=0-903485-53-2 |ol=25432141M |oclc=59913101 }} {{refend}}

{{DEFAULTSORT:GandSWR 23 Class}} [[Category:Glasgow and South Western Railway locomotives|023]] [[Category:Scrapped locomotives]] [[Category:Standard-gauge steam locomotives of Great Britain]] [[Category:Railway locomotives introduced in 1860]] [[Category:0-4-2 locomotives]] [[Category:B1 n2 locomotives]]