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).
Graph of ampere output curves for various controlled dynamos in hot conditions (75°C).
| Identifier | WestWitteringFiles\L\2Jan1924-March1924\ Scan77 | |
| Date | 3rd July 1914 | |
| Title: AMPERE OUTPUT CURVES OF VARIOUS CONTROLLED DYNAMOS IN HOT CONDITION. (75°C). Vertical Axis (left): OPERATING VOLTAGES. Vertical Axis (right): AMPERE OUTPUT. Horizontal Axis: DYNAMO SPEED (R.P.M.). Legend: SPECIFICATION CURVE STANDARD LUCAS E.A.C. DYNAMOS ☉ C. MACHINE WITH CAST IRON POLE PIECES x D.{John DeLooze - Company Secretary} " " " " " " Δ B. MACHINE WITH MILD STEEL POLE PIECES (3RD VARIATION) Graph Curve Labels: LUCAS, SPECn, B, C, D.{John DeLooze - Company Secretary} Top Right Annotations: G.B.P., C7C M/214, 3.7.14, PASSED. | ||