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).
From F.H.R. to Mr. Ellis requesting comparative data on weights and EMF for Edison cells versus lead cells for car lighting.
| Identifier | ExFiles\Box 1\7\ B001_X15 20 46 50 59-page222 | |
| Date | 18th June 1913 | |
| C O P Y. X.50 June 18th. 1913. R4/C18613. Mr. Ellis from F.H.R. Copies sent to J and Wor.{Arthur Wormald - General Works Manager} COPY. X.50 Re Edison Cells -X.50. With reference to your memo Wor{Arthur Wormald - General Works Manager}/SM3/L14613., yes please, this does not tell me much, I desire to know the comparative weights for an equal capacity. The maintainence of an equal EMF under all conditions on a car, for the car lighting cells at 12 volts and compared with good lead cells. F.H.R. | ||