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).
Inspection report detailing variations and defects on a sample of radiator shutters supplied by John Marston Ltd.
| Identifier | ExFiles\Box 150\3\ scan0449 | |
| Date | 27th April 1938 | |
| 1280. Mr STEADMAN. 27. 4. 38. Ex. JOHN MARSTON LTD. hW RM {William Robotham - Chief Engineer} /SMD {J. Smedley} E.B 3416. SHUTTERS. RADIATOR. SAMPLE SUBMITTED SHOWS THE FOLLOWING VARIATIONS: SEVERAL OF THE SHUTTERS HAVE EVIDENCE OF BAD SURFACE MARKS, ON THE 9/64 RADII. (J. {Mr Johnson W.M.} MARSTON'S DRAWING). THE FACE OF THE CHROMIUM PLATING MUST BE FREE FROM CRACKS, WHICH ARE NUMEROUS ON THIS SAMPLE. THE GAP BETWEEN VANES MUST DEFINITELY BE KEPT CONSTANT, SAMPLE SHOWS A VARYING DISCREPANCY OF ± .050/100 TAKING A CHECK, WITH THE SHUTTERS SET UP IN AN HORIZONTAL PLANE, THE VANES SHOW A VARIATION OF .030/.040, PERMISSABLE VARIATION IS .020. | ||