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).
Data table showing Packard Yoke Movement under various loads and hysteresis effects.
| Identifier | ExFiles\Box 127\1\ scan0359 | |
| Date | 9th May 1938 guessed | |
| PACKARD YOKE MOVEMENT. LOAD. | TOP OF YOKE REL.TO FRAME. | BENDING OF YOKE A.{Mr Adams} | NEEDLE BEARING CLEARANCES & BENDING OF PIVOT PIN AND HOUSING B1 B2. | SIDEWAY MOTION OF YOKE C. | ROTATION OF LOWER LEVER E, X. | TWIST OF LOWER LEVER D.{John DeLooze - Company Secretary} (Vertical text in 'BENDING OF YOKE A.{Mr Adams}' column: No hysteresis) 300 lb. | 0 0 | 0 | 0 0 | 0 0 | 0 .001 | 0 0 600 lb. | .020 .025 | .003 | .007 .009 | .008 .011 | .001 .004 | .0005 900 lb. | .041 .050 | .007 | .011 .013 | .014 .017 | .003 .009 | .001 1200 lb. | .064 .069 | .011 | .016 .018 | .020 .022 | .008 .013 | .0015 1500 lb. | .085 .086 | .014 | .020 .022 | .025 .026 | .020 .021 | .0025 The two rows of figures in each column indicate hysteresis effects. | ||