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 the use of synthetic resin and shellac varnishes on a distributor head to prevent H.T. spark issues.
| Identifier | ExFiles\Box 39\3\ Scan294 | |
| Date | 1st January 1919 | |
| RR 238 (150 BKS.) ID9 461-8-12 (4) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. Customer's No. This will ensure the H.T. spark touching the surface, whilst the larger supply from the transformer will tend to carbonize quicker. Synthetic resin varnish will be tried and the ordinary shellac type of varnish. Mr Brock considers the varnishing of the internal surface of the distributor head a good proposition and we think that our electrical tests will probably confirm this. R's and B's opinion as to any snags in the use of varnish might be useful. Signed H.F.W. This Sheet must be filed on completion of the work. | ||