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).
Design sketch and notes for a standard geared industrial motor, possibly for crane work.
| Identifier | Morton\M6\ img018 | |
| Date | 25th March 1929 | |
| Mr Bentley Mr Hullet Mr Blacmale for R Standard geared Motor 25/3/29 max Torque type prefered Could be a regulated type perhaps for here enclosed & pulley perhaps, belt drive [Drawing notes:] high speed v.{VIENNA} efficient motor of low first cost with good power factor small space & weight This shows an industrial, 3 phase motor with reduction gear. (or for crane work) The motor if small run 3000 & if larger @ 1500 (4 pole) The gear is internal & enclose therefore silent & clean & lubricated & can be vibro-harden (without distorting) 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 secondary motor shaft, & brake drum over casing. | ||