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).
Two graphs detailing the performance of an Acme thread lubrication scheme for a Bentley steering worm.
| Identifier | ExFiles\Box 86\4\ scan0091 | |
| Date | 28th May 1934 | |
| GRAPH I ACME THREAD LUBRICATION SCHEME USING F58296 BENTLEY STEERING WORM .010" DIAMETRAL CLEARANCE SLEEVE MOTORINE 'C' 30°C TEMPERATURE EFFECTIVE LENGTH OF THREAD L 1" & 2" Left Graph Text: Axis Labels: DELIVERY PTS/HR, SHAFT SPEED R.P.M. Line Labels: 5 LB/□' L=2, 10 LB/□' L=2, 5 LB/□' L=1, 15 LB/□' L=2, 0 LB/□' L=1 Axis Numbers: 25, 50, 75, 100, 125, 150, 500, 1000, 1500, 2000 Right Graph Text: Axis Labels: DELIVERY PTS/HR, PRESSURE LB/□' Line Labels: 2000 R.P.M. L=2", 2000 R.P.M. L=1", 1500 R.P.M. L=2", 1500 R.P.M. L=1, 1000 R.P.M. L=2", 1000 R.P.M. L=1, 500 R.P.M. L=2", 500 R.P.M. L=1" Axis Numbers: 25, 50, 75, 100, 125, 150, 5, 10, 15 Initials: MB | ||