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).
Letter to Thos. Firth & John Brown Ltd. regarding the supply of rear spring main plates and manufacturing difficulties with oil holes.
| Identifier | ExFiles\Box 95\3\ scan0185 | |
| Date | 10th December 1935 | |
| x Exptl. Dept. Hs{Lord Ernest Hives - Chair}/Les.15/KW. 10th December,1935. Messrs. Thos. Firth & John Brown Ltd., Spring Dept., Tinsley, Sheffield. For the attention of Mr. Porter. Dear Sir, We are requiring another pair of rear spring main plates Ex.18483. The only difference being that these are for a pair of springs F.66931, 1250 lbs. I should be very greatly obliged if you would let me know how soon we can expect to see these 2 spring leaves. Your prompt work on those special 25 HP. springs was appreciated at Derby. We should like to know if you still consider these thin top leaves impracticable for production because of the oil holes. I am only hoping that you may have found a better way for drilling the smaller hole. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||