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).
The study and testing of untreated electrical insulating papers for purposes other than cable manufacture.
| Identifier | ExFiles\Box 24\2\ Scan236 | |
| Date | 30th January 1923 guessed | |
| X1109 DIRECTIONS FOR THE STUDY OF ELECTRICAL INSULATING PAPERS. 657 DIRECTIONS FOR THE STUDY OF ELECTRICAL INSULATING PAPERS (UNTREATED) FOR PURPOSES OTHER THAN THE MANUFACTURE OF CABLES.* (REPORT RECEIVED FROM THE BRITISH ELECTRICAL AND ALLIED INDUSTRIES RESEARCH ASSOCIATION.) CONTENTS. Page Preface . . . . . . . . . . . . . . . . . . 658 I. Definitions . . . . . . . . . . . . . . . . 659 II. Processes of Treatment during Manufacture . . . . 660 III. Tests . . . . . . . . . . . . . . . . . . 661 IV. Schedule of Uses, Tests and Papers . . . . . . 667 (This schedule indicates which tests are most appropriate for papers intended for the various specific applications shown.) Appendix . . . . . . . . . . . . . . . . . 670 INDEX. Acid, treatment with (parchmentising) . . . . . . . 660 Acidity, test for . . . . . . . . . . . . . . . 662 Ageing, test for . . . . . . . . . . . . . . . 661 Alcohol, treatment of cellulose with . . . . . . . . 660 Alcohol, acidulated, for sizing tests . . . . . . . . 664 Alkali, treatment with (parchmentising) . . . . . . . 660 Alum, use in resin sizing . . . . . . . . . . . . 660 Aluminium sulphate, use in resin sizing . . . . . . . 660 Aniline dyes, use of, in colouring process . . . . . . 660 Animal sizing (see Gelatine sizing) . . . . . . . . 660 Ash, test for mineral ash . . . . . . . . . . . 664 Aspirator bottle, for porosity test . . . . . . . . 662 Beeswax, use of, in glazing . . . . . . . . . . 660 Best rag tissue paper, definition of . . . . . . . . 659 Bleaching, definition of . . . . . . . . . . . . 660 Brine, treatment of cellulose with . . . . . . . . 660 Brokes, use of, in process of loading . . . . . . . 660 Broussonetia papyrifera, use of, in tissue paper . . . . 660 Burette, for porosity test . . . . . . . . . . . 662 Bursting strength, determination of . . . . . . . . 661 Bursting test . . . . . . . . . . . . . . . 661 Calcium sulphate, use of, in loading . . . . . . . 660 Carbon disulphide, treatment of cellulose with . . . . 660 Cartridge paper, note on . . . . . . . . . . . . 659 Casein, use of, in gelatine sizing . . . . . . . . . 660 Casein, determination of, in size . . . . . . . . . 664 Caustic soda, use of . . . . . . . . . . . . . 665 Cellulose, use of, in viscose sizing . . . . . . . . 660 Celluvert . . . . . . . . . . . . . . . . . 659 Chemical tests . . . . . . . . . . . . . . . 662 Chemical test, for metallic particles . . . . . . . . 664 Chemical wood pulp, definition of . . . . . . . . 659 China clay, use of, in loading . . . . . . . . . . 660 Chloride of lime, use of, as bleaching agent . . . . . 660 Cochineal, for producing whiteness . . . . . . . . 660 Colouring, definition of . . . . . . . . . . . . 660 Condenser tissue paper, definition of . . . . . . . 659 Conditioning of specimens for test . . . . . . . . 661 Conducting particles, flash test for . . . . . . . . 665 Controlled atmosphere, for conditioning . . . . . . . 662 Copper, polished, for plate glazing . . . . . . . . 661 Core plate insulating paper, definition of . . . . . . 659 Cotton tissue paper, definition of . . . . . . . . 659 Crinkling under tension . . . . . . . . . . . . 661 Definitions of papers . . . . . . . . . . . . 659 Density, determination of . . . . . . . . . . . 661 Direction test . . . . . . . . . . . . . . . 670 Discs, clamping . . . . . . . . . . . . . . 662 Electrical tissue paper, definition of . . . . . . . 659 Elongation, cause of crinkling . . . . . . . . . . 665 Engine sizing (see Resin sizing) . . . . . . . . . 660 Extension, test for . . . . . . . . . . . . . . 661 Fibrous material, identification of . . . . . . . . 665 Fish paper, definition of . . . . . . . . . . . . 659 Flash test for conducting particles . . . . . . . . 665 Flash test, voltage for . . . . . . . . . . . . . 665 Frequency of current for flash test . . . . . . . . 665 Gelatine sizing, process of . . . . . . . . . . . 660 Glazing, friction . . . . . . . . . . . . . . 660 Glazing, machine . . . . . . . . . . . . . . 660 Glazing, methods of . . . . . . . . . . . . . 660 Glazing, plate . . . . . . . . . . . . . . . 661 Glue, determination of, in size . . . . . . . . . . 664 Glue, emulsification of, with ether; sizing test . . . . . 664 Glue, removal of, in sizing test . . . . . . . . . . 664 Glue, use of, in gelatine sizing . . . . . . . . . 660 Grass bleached tissue paper . . . . . . . . . . . 659 Greaseproof, treatment for making . . . . . . . . 660 Hand-made tissue paper . . . . . . . . . . . . 660 Hard sizing (see Resin sizing) . . . . . . . . . . 660 Horn fibre paper, definition of . . . . . . . . . . 659 Humidity of controlled atmosphere . . . . . . . . 661 Hydra-cellulose (see Hydration) . . . . . . . . . 660 Hydration, process of . . . . . . . . . . . . . 660 Hydro-cellulose (see Parchmentising) . . . . . . . . 660 Identification of fibres . . . . . . . . . . . . 665 Imitation Japanese tissue paper, definition of . . . . 660 Insulation, failure of, in flash test . . . . . . . . 665 Iodine, use of, in preparation of stain . . . . . . . 665 Iron particles in rope paper . . . . . . . . . . . 659 Japanese Gampi tissue paper, definition of . . . . . . 660 Japanese Kodzu tissue paper, definition of . . . . . 660 Japanese Mino dental tissue paper, definition of . . . 660 * The term "untreated" denotes that the paper has not been varnished, impregnated or otherwise treated after despatch from the paper mill. | ||