Examination report on a broken spring (F.5358), identifying a deeply sunk maker's mark 'J' as the primary cause of the fracture.
| Identifier | ExFiles\Box 52\2\ Scan144 | |
| Date | 1st May 1927 | |
| [Typed] TO "H.S." From "G.W.H." Hotel de France. Chateauroux(French test region). Indre. France. May.Ist 1927. I O - G - I I I I. We have examined the leaves of the broken spring F.5358, and, all are O.K.; but for the top leaf which broke right accross 3.5" rear of center bolt. We believe that the mark of the makers has been the primary cause of the fracture; the J which is deeply sunk into the plate, follows the line of fracture as shown by the sketch. G.W.HANCOCK. [Handwritten] By you might wish to point this out to Firths as we believe it was laid down that top plates should not be marked HS {Lord Ernest Hives - Chair} As have written as requested By G.W.H. 4.5.27 [Stamped] By 4 MAY 1927 | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).