| Description | Date | Identifier | |
| From EFC to ROY requesting an order for a new set of positive elements for a battery cell. | 9th Dec 1927 | Box 61 \ 1 scan0041 | |
| Instructions for fitting and initial charging of new battery cell sections. | 11th Feb 1928 | Box 61 \ 1 scan0042 | |
| Order for a new set of positive elements for a battery cell. | 11th Feb 1928 | Box 61 \ 1 scan0043 | |
| Internal request to order 1 quart of 'Blancol' oil for Peto & Radford FA.11 cells. | 16th Feb 1928 | Box 61 \ 1 scan0044 | |
| Request to order a new set of positive elements for one cell of a battery. | 20th Mar 1928 | Box 61 \ 1 scan0045 | |
| Letter from accumulator manufacturer Peto & Radford concerning battery cells, maintenance, and potential upgrades. | 7th Jun 1928 | Box 61 \ 1 scan0046 | |
| Failure of stationary battery cells and proposing an order for new positive elements and separators. | 8th Jun 1928 | Box 61 \ 1 scan0047 | |
| Typed letter to Mr. C.R.N. Minchin regarding an order for battery components. | 8th Jun 1928 | Box 61 \ 1 scan0048 | |
| Requesting an additional 100 short wood separators for FA.11 cells. | 6th Jul 1928 | Box 61 \ 1 scan0049 | |
| Letter regarding the supply of ebonite and wood separators for a stationary battery. | 18th Jul 1928 | Box 61 \ 1 scan0050 | |
| Extract from a letter regarding missing wooden plate type separators and a request for them to be forwarded. | 19th Jul 1928 | Box 61 \ 1 scan0051 | |
| Letter to Peto & Radford regarding a red stain appearing on FA.11 battery cells during charging. | 24th Aug 1928 | Box 61 \ 1 scan0052 | |
| Letter from a battery manufacturer regarding a harmless red stain observed on new separators in FA 11 cells. | 29th Aug 1928 | Box 61 \ 1 scan0053 | |
| Internal request to order half a gallon of Blancol oil for Pritchett & Gold cells. | 15th Jan 1929 | Box 61 \ 1 scan0054 | |
| Request to order replacement positive plate sections for FA.11 laboratory battery cells. | 27th Mar 1930 | Box 61 \ 1 scan0055 | |
| Request to wire a supplier for a replacement glass cell container for an FA.11 cell that has cracked. | 16th May 1930 | Box 61 \ 1 scan0056 | |
| Order for replacement parts for FA.11 type stationary cells. | 16th Jul 1931 | Box 61 \ 1 scan0057 | |
| Order request for replacement Positive Plate Sections and 'Blancol' Oil for stationary cells in the experimental laboratory. | 17th Jul 1931 | Box 61 \ 1 scan0058 | |
| The short lifespan of Pritchett & Gold batteries due to plate buckling and requesting particulars on a superior Ediswan alternative. | 27th Oct 1931 | Box 61 \ 1 scan0059 | |
| Letter to Pritchett & Gold and E.P.S. Co.Ltd. concerning battery performance and potential solutions. | 29th Dec 1931 | Box 61 \ 1 scan0060 | |
| Letter discussing battery specifications, space constraints, and alternative proposals for battery cells. | 29th Dec 1931 | Box 61 \ 1 scan0061 | |
| Letter from a battery supplier proposing a meeting to discuss battery plate life. | 31th Dec 1931 | Box 61 \ 1 scan0062 | |
| Letter to Pritchett & Gold and E.P.S. Ltd. regarding confusion over battery plates and arranging a visit. | 1st Jan 1932 | Box 61 \ 1 scan0063 | |
| Letter from Pritchett & Gold and E.P.S. Company regarding a meeting with Mr. Preston and a battery proposal. | 4th Jan 1932 | Box 61 \ 1 scan0064 | |
| Letter from Pritchett & Gold and E.P.S. Company arranging a meeting to discuss a stationary type battery. | 9th Jan 1932 | Box 61 \ 1 scan0065 | |
| Letter to Messrs. Pritchett & Gold and E.P.S. Ltd. arranging a meeting to discuss stationary battery performance. | 11th Jan 1932 | Box 61 \ 1 scan0066 | |
| Letter from accumulator manufacturers Peto & Radford concerning battery life and charging procedures for 8-FA-11 cells. | 15th Jan 1932 | Box 61 \ 1 scan0067 | |
| Concluding page of a letter from Peto & Radford regarding a hydrometer. | 5th Jan 1932 | Box 61 \ 1 scan0068 | |
| Confirming a verbal arrangement to supply two sets of positive elements type FA.11 for a stationary battery. | 5th Jan 1932 | Box 61 \ 1 scan0069 | |
| Request to obtain wood components from Pritchett & Gold for a stationary battery in the Experimental Electrical Laboratory. | 28th Jan 1932 | Box 61 \ 1 scan0070 | |
| Order for wood skillets and dowels for a stationary battery in the electrical laboratory. | 29th Jan 1932 | Box 61 \ 1 scan0071 | |
| Internal request to order replacement parts for a Pritchett & Gold battery for the Experimental Electrical Lab. | 4th May 1932 | Box 61 \ 1 scan0072 | |
| Internal order for parts to repair a Pritchett & Gold battery for the Experimental Electrical Laboratory. | 6th May 1932 | Box 61 \ 1 scan0073 | |
| Internal order request for supplies for an experimental electrical laboratory battery. | 5th Jul 1932 | Box 61 \ 1 scan0074 | |
| Request to order spare parts for the repair of a Pritchett & Gold battery for the Electrical Experimental Department. | 6th Jul 1932 | Box 61 \ 1 scan0075 | |
| Order for FAll plates for a Pritchett & Gold battery. | 5th Sep 1933 | Box 61 \ 1 scan0076 | |
| Request to order new Dagenite batteries for a high tension volt measuring rig. | 2nd Sep 1932 | Box 61 \ 1 scan0077 | |
| Order for a set of F.A.11 plates from Messrs. Pritchett & Gold Ltd. for a reservoir battery. | 2nd Sep 1933 | Box 61 \ 1 scan0078 | |
| Order for spare parts for a F.All. Pritchett & Gold battery. | 10th Oct 1933 | Box 61 \ 1 scan0079 | |
| Internal order for Exide batteries for the Experimental Department's test beds. | 19th Nov 1934 | Box 61 \ 1 scan0080 | |
| Instruction sheet detailing comparative leakage tests on Redmanol and Bakelite coil cases at various temperatures and voltages. | 8th Mar 1930 | Box 61 \ 1 scan0081 | |
| Test report comparing the insulation resistance in Megohms for Bakelite and Redmanol materials at various temperatures. | 8th Dec 1924 | Box 61 \ 1 scan0082 | |
| Instruction regarding the testing of Bakelite for coil cases and a recommendation to purchase Redmanol powder. | 8th Dec 1924 | Box 61 \ 1 scan0083 | |
| Preliminary test results on Bakelite Material X.616.B for coil cases, recommending against immediate production use. | 10th Mar 1930 | Box 61 \ 1 scan0084 | |
| Comparative electrical leakage tests on Bakelite material X.616 B. | 7th Mar 1930 | Box 61 \ 1 scan0085 | |
| The testing of material X.616 B and potential alternative submissions from Bakelite Ltd for ignition coil cases. | 17th Mar 1930 | Box 61 \ 1 scan0086 | |
| Request for road testing of ignition coils with cases moulded from a British-made Bakelite material. | 28th Mar 1930 | Box 61 \ 1 scan0087 | |
| Road test report on ignition coil cases moulded with a new Bakelite material. | 2nd Apr 1930 | Box 61 \ 1 scan0088 | |
| Testing and comparing different coil case materials (Redmanol and X616B) for misfires at 100°C. | 3rd Apr 1930 | Box 61 \ 1 scan0089 | |
| Testing a new special non-tracking bakelite distributor head and rotor on chassis 16-G4. | 3rd Apr 1930 | Box 61 \ 1 scan0090 | |
| Test report on a high-tension distributor head and rotor moulded with Bakelite Co's XM1000 material. | 4th Apr 1930 | Box 61 \ 1 scan0091 | |
| Further testing of a rotor's insulation material on a 20/25HP chassis, comparing its properties to standard Bakelite. | 4th Apr 1930 | Box 61 \ 1 scan0092 | |
| Note confirming the supply of two coils complete in cases made with Bakelite X616B. | 4th Apr 1930 | Box 61 \ 1 scan0093 | |
| Experiment with all-bakelite ignition wiring tubes on a Phantom chassis. | 4th Apr 1930 | Box 61 \ 1 scan0094 | |
| The fitting of all-bakelite ignition wiring tubes to an experimental chassis for testing. | 8th Apr 1930 | Box 61 \ 1 scan0095 | |
| Request to test a new sample of Bakelaque for its insulation properties following a previous rejection. | 8th Apr 1930 | Box 61 \ 1 scan0096 | |
| Testing ignition coil cases moulded with Bakelite Co's. X616B powder. | 9th Apr 1930 | Box 61 \ 1 scan0097 | |
| Requesting feedback on a coil core made from XM1000 Bakelite non-tracking powder. | 9th Apr 1930 | Box 61 \ 1 scan0098 | |
| Instructions and results for leakage tests on Bakelite X.616B and Redmanol coil cases. | 10th Apr 1930 | Box 61 \ 1 scan0099 | |
| Test report comparing the electrical resistance properties of Redmanol and Bakelite x616.B powders under various processing conditions. | 8th Dec 1924 | Box 61 \ 1 scan0100 | |
| Instruction notes on the properties of cases moulded from Redmanol powder versus 'biscuit' form. | 8th Dec 1924 | Box 61 \ 1 scan0101 | |
| Test report on an improved Bakelaque sheet for leakage using a trembler coil apparatus. | 23th Apr 1930 | Box 61 \ 1 scan0102 | |
| Test results report for material leakage and breakdown voltage at varying temperatures. | 24th Apr 1930 | Box 61 \ 1 scan0103 | |
| The successful testing of Bakelite Co's moulding material for use in ignition coil cases. | 24th Apr 1930 | Box 61 \ 1 scan0104 | |
| Tests of Bakelaque sheet material, confirming its suitability for insulating plates on dynamo brush gear. | 4th Apr 1930 | Box 61 \ 1 scan0105 | |
| Tests on the effect of temperature on moulded bakelite H.T. wiring tubes. | 25th Apr 1930 | Box 61 \ 1 scan0106 | |
| The effects of heat on moulded bakelite H.T. wiring tubes, with a comparison to vulcanite covering. | 10th Apr 1930 | Box 61 \ 1 scan0107 | |
| Leakage tests on coil cases made from special grades of Bakelite. | 28th Apr 1930 | Box 61 \ 1 scan0108 | |
| Page from a report discussing the properties of the X.616B Stiff case after moulding. | 28th Apr 1930 | Box 61 \ 1 scan0109 | |
| Extract from Mr. Hancock's report on the performance of an ignition coil on car 23-EX after 5,000 miles. | 7th May 1930 | Box 61 \ 1 scan0110 | |
| 'tracking' tests conducted on Bakelite XM1000 moulding powder. | 7th May 1930 | Box 61 \ 1 scan0111 | |
| Test report comparing the electrical breakdown of an XM1000 sample against a standard Bakelite sample. | 7th May 1930 | Box 61 \ 1 scan0112 | |
| Comparison of the material XM1000 against standard Bakelite, concerning its susceptibility to electrical tracking in ignition systems. | 1st May 1930 | Box 61 \ 1 scan0113 | |
| Request to continue testing a Bakelite material distributor head and rotor by moving it from engine 16-GIV to 12-GIV. | 1st May 1930 | Box 61 \ 1 scan0114 | |
| The non-tracking properties and tests of Bakelite XM.1000 moulded material for distributor components. | 9th May 1930 | Box 61 \ 1 scan0115 | |
| Recommending XM.1000 material over bakelite for use in rotors and distributor heads. | 19th May 1930 | Box 61 \ 1 scan0116 | |
| Extract from a report on the performance of an ignition coil with a British-made bakelite case after a 9,000-mile test on car 23-EX. | 21th May 1930 | Box 61 \ 1 scan0117 | |
| Enquiry into using Bakelite XM.1000 moulded material for rotors and distributors, weighing its advantages against increased cost and production complexity. | 21th May 1930 | Box 61 \ 1 scan0118 | |
| Summary of leakage tests conducted on various grades of Bakelite coil cases, comparing them with standard Redmanol material. | 28th May 1930 | Box 61 \ 1 scan0119 | |
| The properties and usage of different moulding powders for manufacturing parts. | 29th May 1930 | Box 61 \ 1 scan0120 | |
| Comparative tests of different grades of bakelite moulding material, specifically Stiff X.616B. | 29th May 1930 | Box 61 \ 1 scan0121 | |
| Note regarding ignition coil X.6011 for 18-GIV, specifying use of special British bakelite material. | 23th Jun 1930 | Box 61 \ 1 scan0122 | |
| Suggesting the withdrawal of a standardisation sheet for bakelite powder due to its American origin and inability to be reproduced in Britain. | 9th Jul 1930 | Box 61 \ 1 scan0123 | |
| Cancellation notice for a standardisation sheet regarding Ignition Coil Cases made from British Bakelite material. | 29th Aug 1930 | Box 61 \ 1 scan0124 | |
| Extract from the Electrical Review discussing the manufacture and composition of phenol-formaldehyde (bakelite) mouldings. | 12th Sep 1930 | Box 61 \ 1 scan0125 | |
| Technical document describing the three-stage manufacturing process and properties of a resin, likely Bakelite. | 12th Sep 1930 | Box 61 \ 1 scan0126 | |
| The electrical properties and leakage tests conducted on phenol-formaldehyde mouldings. | 12th Sep 1930 | Box 61 \ 1 scan0127 | |
| Report page discussing leakage curves and the effects of temperature on electrical mouldings. | 12th Sep 1930 | Box 61 \ 1 scan0128 | |
| Test report comparing the electrical properties of four different powder samples in a table format with analysis. | 12th Sep 1930 | Box 61 \ 1 scan0129 | |
| Analysis of the effects of ageing and storage conditions on Phenol-formaldehyde mouldings. | 12th Sep 1930 | Box 61 \ 1 scan0130 | |
| Conclusions page discussing the quality of mouldings and the need for improved systematic testing. | 24th Sep 1930 | Box 61 \ 1 scan0131 | |
| Samples of waxed and plain paper for use as ignition coil insulation. | 24th Sep 1930 | Box 61 \ 1 scan0132 | |
| Properties of paper-covered copper wires as a potential alternative to cotton-covered wires. | 28th Aug 1930 | Box 61 \ 1 scan0133 | |
| Tests conducted on ignition coil insulating papers for secondary winding insulation. | 10th Oct 1930 | Box 61 \ 1 scan0134 | |
| Results of conductance tests on various types of wax paper at different temperatures. | 10th Oct 1930 | Box 61 \ 1 scan0135 | |
| Continued report on the properties of different papers for use in coil impregnation. | 1st Oct 1930 | Box 61 \ 1 scan0136 | |
| Tests conducted on ignition coil insulating papers for secondary winding insulation. | 15th Oct 1930 | Box 61 \ 1 scan0137 | |
| Comparing the properties and suitability of various insulating papers for wax impregnation in coils. | 15th Oct 1930 | Box 61 \ 1 scan0138 | |
| Request to test a sample of Varnished Insulating Paper from a Lucas Ignition Coil and compare it with the standard Waxed Paper. | 27th Oct 1930 | Box 61 \ 1 scan0139 | |
| Requesting the modification of a coil case testing electrode due to shrinkage issues during moulding. | 28th Oct 1930 | Box 61 \ 1 scan0140 | |
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