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).
Test report from The Self Sealing Rubber Co. Ltd. on the tensile strength of flexible coupling discs.
| Identifier | ExFiles\Box 74\3\ scan0061 | |
| Date | 22th March 1923 | |
| Sheet 3. From: THE SELF SEALING RUBBER CO.LTD. HERMETIC FLEXIBLE COUPLING DISCS (Prov.Pat) ------------------------------------ As the result of a series of special tests made by the Engineering Department of the Birmingham University, the certified Tensile Strength of the Coupling Discs is as follows: Disc 5/8" thick x 7 1/4" dia...... 13,650 in lbs. Disc 3/8" thick x 7" dia...... 10,250 in lbs. Date of test report, 22nd March 1923. THE SELF SEALING RUBBER CO.LTD. Director & General Manager. | ||