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).
Modification to the Phantom III horn brackets to prevent fracturing.
| Identifier | ExFiles\Box 166\9\ img134 | |
| Date | 15th September 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} c. DY{F R Danby}/CS. c. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} Re .6066. BY/RD.1/B.15.9.37. "Phantom III" Horn Brackets. In order to prevent the fracture of horn brackets which is occurring across the section where the dowel hole is drilled, we propose to move the dowel hole to the other side in a less stressed area, and we hand you herewith blueprints of :- D.76112 - Bracket. 2 off. D.76113 - Lucas Mellotone Horns. 1 pair. Will you please order 3 sets of brackets, and have same sent to Messrs. Lucas for fitting to horns. In order that this modified horn may be fitted to its support on the radiator, it will be necessary for the dowel pin to be changed from the top to the bottom, and we therefore hand to you, blueprints of :- E.89192 - Support Bracket. 2 off. BY/RD 32EX 35EX 39EX | ||