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).
Alteration to a piston ring drawing to specify clearance for shop practice.
| Identifier | ExFiles\Box 16\1\ Scan132 | |
| Date | 21th July 1914 | |
| R.R. 235a (150 H) (V.V. 681 12-5-14) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0414. RE PISTON RINGS. X.741. On 21. 7. 14. the piston ring drawing was altered to bring same into conformity with shop practice, namely, 2 to 3,000 [handwritten: thous.] clearance was allowed between the width of the ring and the width of the groove. The piston groove on E.4237A being .187 ± 1/4. [Watermark: DICKINSON BOND 1804 MADE AT CROXLEY] | ||