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of Rutland Terrace Ironworks, Stamford
1857 Henry Smith retired and Smith and Ashby became T. W. Ashby and Co.
1861 Employs 156 persons 
1862 Advert includes portable steam engine and chaff cutters etc. and trading as T. W. Ashby and Co (late Smith and Ashby) of Rutland Terrace Ironworks 
1863 T. W. Ashby's portable engine ('introduced within the last four years') was briefly described and illustrated in The Practical Mechanic's Journal in February 1863. The writer was not impressed, observing that the engines 'are very simple and cheap, but the workmanship is rather below the average.', although he closed by saying that 'on the whole, this engine is good, and easily managed.' The cylinder was on the side of the boiler.