{"product_id":"model-stephensons-valve-gear-stock-code-2500","title":"Model Stephensons valve gear","description":"\u003cp align=\"left\"\u003eA large, very finely engineered demonstration model of  Stephenson's valve gear, mounted in a glass case. I think that it is nineteenth  century and probably originated from one of the locomotive works - the detail  and workmanship in it is far in excess of that required to demonstrate the gear.  The crank axle is turned from the solid in one piece, it is fitted with cottered  big ends. The gunmetal eccentric straps are all fitted with oilers.\u003c\/p\u003e  \u003cp align=\"left\"\u003eThe operating handle allows the whole motion to be turned over,  the gear can be notched up to show operation of the slide valves and pistons.\u003c\/p\u003e  \u003cp align=\"left\"\u003eThe glass case is missing two pieces of glass but is otherwise  sound. The whole thing is rather grubby, the dark olive green and red paint  beneath has a nice patina.\u003c\/p\u003e  \u003cp align=\"left\"\u003eThe whole thing is large and immensely heavy. I have owned it  for some years, my boys learned the ins and outs of Stephenson's valve gear on  it. In recent times I have tried hard to persuade Mrs P that, with the glass  replaced in the top it would make a handsome and unusual table for the  conservatory, thus far with little success.\u003c\/p\u003e  \u003cp align=\"left\"\u003eLength 48 inches\u003cbr\u003e  Width 24 inches\u003cbr\u003e  Weight 250 pounds\u003c\/p\u003e  \u003cp align=\"center\"\u003e\u003c\/p\u003e","brand":"Station Road Steam","offers":[{"title":"Default Title","offer_id":54019094348117,"sku":"2500","price":795.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0094\/2677\/files\/2500-1.webp?v=1779901794","url":"https:\/\/stationroadsteam.com\/products\/model-stephensons-valve-gear-stock-code-2500","provider":"Station Road Steam","version":"1.0","type":"link"}