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Coleman and Morton of London Road, Chelmsford
1850s Established as Coleman and Son.
1862 Exhibited at the 1862 London Exhibition a portable engine
1862 Cultivating apparatus.
Became Coleman and Morton.
1866 Listed as Coleman and Morton, London Road Iron Works, - Chelmsford. - Agricultural implements and machines at the 1867 Paris Exhibition
1888 Produced wheat grader machinery 
1895 Partnership changed. '...the Partnership heretofore subsisting between us the undersigned Henry Septimus Coleman and Alfred George Edwin Morton carrying on business as Agricultural Engineers and Ironfounders at Chelmsford in the county of Essex under the style or firm of Coleman and Morton has been dissolved by mutual consent as and from the 29th day of June 1895. The business will from that date be carried on under the same style by George Henry Coleman and Alfred Reay Morton...'
1906 The partnership was dissolved.