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).
Instructions regarding bedding in, testing, and preventing sticking of machine brushes.
| Identifier | ExFiles\Box 62\3\ scan0183 | |
| Date | 8th December 1924 | |
| RR 238 (150 BKS.) (OB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To_________________ 19__ Order No._________________ Customer's No._________________ [Handwritten Body] may become burnt through sparking and this will have some effect on the output. We now specify good bedding of the brushes in production, by scraping and bench running and also give the control brush position within narrow limits. Some time ago we took a curve on a medium output machine with Z brushes. We then changed to FG2 brushes, bedded them in and re-set the control brush by temperature rise and repeated the curve. The result was an almost exact reproduction throughout of the first curve and the control brush position was the same. / Regarding sticking brushes are always liable to become sluggish especially if the machine is overoiled. We guard against this by having good clearances round the brush and by recommending cleaning periodically with petrol. [Vertical text in left margin] Sticking [Bottom of form] Signed_________________ This Sheet must be filed on completion of the work. [Handwritten initials] H.{Arthur M. Hanbury - Head Complaints} A.{Mr Adams} | ||