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).
Preface and test conclusions for the Wills Patent Pressure Filled Joint Ring, with compression load graphs for copper and monel metal rings.
| Identifier | ExFiles\Box 86\1\ scan0079 | |
| Date | 7th December 1932 | |
| PREFACE. THE general interest aroused by the WILLS PATENT PRESSURE FILLED JOINT RING is definitely indicated by the number of daily enquiries as to its suitability for various purposes. The following technical and general information obtained at the National Physical Laboratory and in the Research Department and Works of Wills Pressure Filled Joint Ring Ltd., and W. & F.{Mr Friese} Wills, Ltd., and also in the course of various experiments conducted in the works of the leading engineers in the country, calling for conditions of a specific nature, have been published with the object of being of service to engineering and industrial firms, so that they may be saved the trouble and expense of conducting experiments in fields where experience has shown that the Joint Ring has already been found suitable. The force exerted on the flange or other joint faces by the internal pressure, which is the basic feature of our Patent Pressure Filled Joint Ring, effects a perfect seal with a minimum of tension on the bolts or other clamping media used in drawing the faces together, hence the title “ Magister Pressuum,” Master of Pressures. The Joint Ring itself constitutes a great advance in the development of jointing material, and its characteristics are detailed in the following pages. CONCLUSIONS: The bursting strength of the Ring GQQ 2 is very high, showing that a satisfactory weld has been obtained. The ring in the recessed joint, constructed to give the normal axial compression, stood 1.5 tons/sq. in. as compared with the average of 0.82 tons/sq. in. for the rings between plane surfaces. J.{Mr Johnson W.M.} E.{Mr Elliott - Chief Engineer} PETAVAL, Director. per H.{Arthur M. Hanbury - Head Complaints} GOUGH, Superintendent Engineering Dept. Date:—7th December, 1932. Reference:—Eng. Dept./GQQ/CJ. GRAPH 1: COPPER RING. Nº ENG. TEST MARK:— GLE.1. Y-Axis: THICKNESS OF RING. INCH. (0.12, 0.14, 0.16, 0.18, 0.19) X-Axis: COMPRESSION LOAD — TONS. (0, 1, 2, 3, 4, 5, 6, 7, 8) Data labels on graph: 3/16, 5/32 GRAPH 2: MONEL METAL RING. Nº ENG. TEST MARK:— CLE4. Y-Axis: THICKNESS OF RING. INCH. (0.12, 0.14, 0.16, 0.18, 0.19) X-Axis: COMPRESSION LOAD — TONS. (0, 1, 2, 3, 4, 5, 6, 7, 8) Data labels on graph: 3/16, 5/32, 1/8 Page numbers: 2, 19 | ||