Alteration notice for the Wraith Ignition Coil, listing new parts and suggesting a die modification.
| Identifier | ExFiles\Box 164\5\ img311 | |
| Date | 1st July 1937 | |
| TO. HPS {Horace Percy Smith - Experimental Factory Mgr} c. Rm {William Robotham - Chief Engineer} /Wst. 6017 BY {R.W. Bailey - Chief Engineer} /RD.3/B.1.7.37. Wraith Ignition Coil - LOP. D.75673. Please receive herewith our alteration No: 1511/Dss, adding the following new parts to the above LOP., in accordance with RR.Sch.1103. DW.311 - Terminal Head. DW.312 - Insert. DW.310 - Arrangement of Windings. K.1805A - Screw. We think the dies for D.74450 - Terminal Head, should be modified to make the new piece. Will you please put in hand as required. BY {R.W. Bailey - Chief Engineer} /RD. | ||
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).