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).
Instructions for an experiment to compare buttress thread worm gears with standard spur gears.
| Identifier | ExFiles\Box 2\6\ B002_X 140 141 157-page150 | |
| Date | 3rd February 1912 guessed | |
| ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. Re have 'life' size gears ~~from small size~~ made to experiment with, but to turn two worms of quite small size would be comparatively easy. By setting these to run with suitable bronze spur gears we should obtain comparative results; and if as shown by temperature rise the buttress thread had some advantage in both directions* we should be fairly safe in assuming that it would retain the advantage if running with a worm wheel. [Diagram showing intersecting axes of a worm and spur wheel, labelled 'worm axis' and 'axis of spur wheel'] * It would be better this way 'definite advantage forward and no disadvantage on reverse'. Signed FW This Sheet must be filed on completion of the work. | ||