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| Title | For an improvement in locomotive steam engines | 
|---|---|
| Creator | Unknown | 
| Date of Creation | Aug 1846 | 
| Description | Patent granted to Stephenson and William Howe. Sheet 1: fig 1 lateral elevation; fig 2 horizontal plan. Inscribed 'W Weallans delt' left footer, signed by Stephenson left header. Scale 1 inch to 1 foot. | 
| Archive Reference | STE/1/1/8/1 | 
| Media | Ink and watercolour on board | 
| Dimensions | 598x463 mm |