"Mary Ann," the "maid-of-all-work."


Brothers who write do not hesitate to tick me off "good and proper" if they think I deserve a slating; and in the little "locomotive election" some of the good folk whose favourite road is the L.N.E.R. aired what they considered a grievance. Other correspondents also ventured some good-natured criticism. Now, I‘m really and truly glad to get these letters, for consideration of them has enabled two birds to be slaughtered with one brick. Our friends of the L.N.E.R. asked what grudge I had against their line; the others wanted to know why I had never fully described a 2½ in. gauge edition of the most numerous class of locomotives in Great Britain, viz., the 0-6-0, or "maid-of-all-work."

Incidentally, engines of this type have truly earned their title. They haul a 60-wagon mineral train over the "long, long trail," or wander around the local goods yards with a few wagons, stowing for an occasional shunt; when there is a shortage of passenger engines they tackle stopping suburban trains or heavy long-distance excursions with equal facility; should disaster of a minor kind overtake an express passenger engine, "Mary Ann" leaves her goods wagons and hastens to the rescue, and the way she can spin her little wheels, and hump the coaches along at the level sixty or more, albeit keeping perfectly safe and steady, is little short of marvellous to the uninitiated who have never been on a footplate!

Howsumever, as they say in Mayfair ; harking back to the complaints; to prove I have no grudge against the L.N.E., and to show that I haven‘t forgotten "Mary Ann," I propose now to give a short non-stop account of how to build a LN.E.R. type 0-6-0 similar to the Darlington "J" class. As with Josie, there won‘t be any snags, for I am building one myself for a friend down in Somerset, so will be able to supplement the notes and sketches with pictures of the actual job under way. Please note she is not a "scale model," as I don‘t deal in such things; she is just a little locomotive looking as near like her big- sister "as makes no odds," but having the kind of "giblets" that experience teaches me will do the job in the most efficient manner.

An outline sketch of the engine is given here. The "lads of the village" who asked for the "words and music" on an 0-6-0 were pretty emphatic about its having a "fat" boiler, so I have increased the size from the "scale" dimension of 31/8 in. to 33/8 in., and slightly lengthened the wheelbase so that the proportions are retained as far as the eye can see. As a matter of fact, I saw one of these engines, and took a sort of "mental photo" of it, making an outline sketch from memory, for the friend mentioned above. Later I happened to get hold of an outline diagram of the full-sized engine, and found my sketch was very little out. The firebox will extend back a little into the cab, not for the sake of extra capacity, but to get at the backhead fittings easier. The cylinders will be as near 13/16 in. bore as the casting will allow, with 11/8 in. stroke, the valves being actuated by Joy valve gear; the real article, with proper curved slide-shaft guides. The driving wheels are 2¾ in. diameter, which is the exact 2½ in. gauge equivalent of 5 ft. 2 in. on the full-sized engine. With a steam pressure of about 90 lb., which she will maintain, she will take a 60-wagon load, or several adult passengers; also run like a deer if you want her to. Well, let‘s get busy, and bring her to life.

The constructional series appeared in The Model Engineer between 4th January, 1934 and 17th May, 1934.
The Association can supply photocopies of the constructional series to members.

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