Maclean is amongst my recent acquisitions. The entry for No. 73 is on Page 22:
Quote:
In the early fifties the YN&BR had several odd tank engines running, some of them being re-builds of an earlier engine. Of these No.73 built by Messrs R & W Hawthorn in 1852 is shown in Fig.22. The design, dated 1851, figured in Theordore West's collection of diagrams, and it can be seen that the under part of the tank was set astride the trailing axle and there was a second tank under the boiler in front of the driving wheels. No. 73 was a four-coupled tank engine, with driving wheels 4ft 6in in diameter, cylinders 13in dia by 18in stroke, and outside frames.
These engines did duty on local passenger trains. No. 73 was on the Alnwick branch in the sixties and was replaced in 1882. A similar engine, No. 266, worked "locals" in the Newcastle district. There was also No. 153.
I note that "Figure 22" shows a very similar locomotive to the photograph but the safety valve housing is different as is the style of dome (both have large domes). Both could have easily been changed during a works visit (cf. the various safety valve changes in LNER loco histories).
Richard