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).
Sketch of a standard geared motor with handwritten specifications and notes.
| Identifier | ExFiles\Box 180\M6\ img020 | |
| Date | 25th March 1929 | |
| Copy of Sketch, from Mr Royce. STANDARD GEARED MOTOR max torque type preferred could be registered type perhaps Makes a convenient & satisfactory belt drive. High speed & efficient motor to lower first cost with good power factor. Small space & weight. This shows an industrial motor (3 phase) with reduction gear (or for crane work). The motor if small run 3000 & if larger @ 1500 (4 pole). The gear is internal & enclosed therefore silent & clean & lubricated & can be nitro-hardened (without distortion) but to suit the casing must be about 3 to 1 ratio [wonderfully good type of gearing]. A belt pulley, pinion or coupling can be on the second motion shaft, & brake drum over casing. Copies to:- Mr Royce (West WitteringHenry Royce's home town) Claremont Holley Bentley (Original). | ||