| Description | Date | Identifier | |
| Telex message requesting the urgent supply of a 1 1/4' x 093 Bonrest part. | 13th Oct 1938 | Box 135 \ 1 scan0222 | |
| The despatch of a five-bladed fan to Messrs. Ferodo, Ltd for testing. | 19th Oct 1938 | Box 135 \ 1 scan0223 | |
| Letter to Ferodo Ltd. regarding the despatch of a five-blade fan for continued belt testing to investigate fan failures. | 19th Oct 1938 | Box 135 \ 1 scan0224 | |
| Letter from Ferodo Limited regarding the testing of a Ferogrip belt. | 22th Oct 1938 | Box 135 \ 1 scan0225 | |
| Letter from The Houdaille Hydraulic Suspension Co. Ltd. regarding an order for a 12-volt fan. | 22th Oct 1938 | Box 135 \ 1 scan0226 | |
| Order for a 12-volt Motor and Fan from The Houdaille Hydraulic Suspension Co. Ltd. | 24th Oct 1938 | Box 135 \ 1 scan0227 | |
| Loan of a rubber-bladed car heater fan to AC-Sphinx Sparking Plug Co. Ltd. | 25th Oct 1938 | Box 135 \ 1 scan0228 | |
| Letter from The Gates Rubber Company regarding the performance and failure of a sample belt under excessive tension. | 27th Oct 1938 | Box 135 \ 1 scan0229 | |
| Page 2 of a letter detailing belt performance tests and comparisons with other automotive companies. | 27th Oct 1938 | Box 135 \ 1 scan0230 | |
| Letter to Mr. Steadman proposing a test with seven-inch pulleys and promising a significant improvement with new belts. | 28th Oct 1938 | Box 135 \ 1 scan0231 | |
| Letter to The Gates Rubber Company regarding the testing and performance of 'Ferogrip' belts. | 28th Oct 1938 | Box 135 \ 1 scan0232 | |
| Test report on a Gates Vulco belt, detailing its performance and failure analysis. | 28th Oct 1938 | Box 135 \ 1 scan0233 | |
| Test report for a Dayton Cog VC 17 belt, detailing performance metrics. | 28th Oct 1938 | Box 135 \ 1 scan0234 | |
| Letter from Ferodo Limited regarding laboratory reports on V belt tests and requesting another fan to continue the work. | 8th Nov 1938 | Box 135 \ 1 scan0235 | |
| Performance and failure analysis graph for a Gates Vulco vee belt test, plotting revolutions per minute against hours. | 1st Nov 1938 | Box 135 \ 1 scan0236 | |
| Graph plotting revolutions per minute against time in hours for an unfinished Vee Belt test, noting adjustments and component failures. | 2nd Nov 1938 | Box 135 \ 1 scan0237 | |
| Performance graph from a Vee Belt test, plotting RPM and HP over time with annotations of test events. | 1st Nov 1938 | Box 135 \ 1 scan0238 | |
| Performance chart from a Vee Belt test on a Ferogrip (Ferodo No. 2) belt. | 27th Nov 1938 | Box 135 \ 1 scan0239 | |
| Results of tests conducted on vee belts from various manufacturers. | 8th Nov 1938 | Box 135 \ 1 scan0240 | |
| Performance and failure analysis of Gates Vulco and Dayton Cog V.C.17 belts under testing. | 8th Nov 1938 | Box 135 \ 1 scan0241 | |
| The testing of Ferodo Ferogrip fan belts, models No.1 and No.2. | 8th Nov 1938 | Box 135 \ 1 scan0242 | |
| Test report page detailing the methods for calculating belt slip and horsepower, with comparative test results for Dayton and Gates brand belts. | 8th Nov 1938 | Box 135 \ 1 scan0243 | |
| Performance test results for various V-belts, detailing horsepower, running times, and failure modes. | 8th Nov 1938 | Box 135 \ 1 scan0244 | |
| Summary of test results for various types of belts, showing total run time and power transmitted. | 8th Nov 1938 | Box 135 \ 1 scan0245 | |
| Testing and failure modes of six different fans, with handwritten notes on materials and design. | 8th Nov 1938 | Box 135 \ 1 scan0246 | |
| Table summarizing the operational lives and failure modes of six test fans. | 11th Nov 1938 | Box 135 \ 1 scan0247 | |
| Letter from The Gates Rubber Company requesting detailed information on belt testing rigs and sample 'Ferogrip' belts. | 11th Nov 1938 | Box 135 \ 1 scan0248 | |
| Letter regarding the redesign of belts to beat a record set by a competitor named Ferogrip. | 14th Nov 1938 | Box 135 \ 1 scan0249 | |
| Letter from Goodyear chasing up the results of a test on sample V-belts. | 14th Nov 1938 | Box 135 \ 1 scan0250 | |
| New procedure for greasing fans on Wraith and other chassis using Mobil-grease No. 6. | 15th Nov 1938 | Box 135 \ 1 scan0251 | |
| Letter to Goodyear Tyre & Rubber Co. Ltd. regarding delays in belt testing. | 22th Nov 1938 | Box 135 \ 1 scan0252 | |
| Request to forward a Ph.III Fan flange with Dural Blades to Messrs Ferodo Limited for fan belt tests. | 29th Nov 1938 | Box 135 \ 1 scan0253 | |
| Section fan belt being sent to Despatch Stores, marked as scrap and not for return. | 30th Nov 1938 | Box 135 \ 1 scan0254 | |
| Letter to Ferodo Ltd. regarding a faulty 'Ferogrip' belt and ordering replacements. | 30th Nov 1938 | Box 135 \ 1 scan0255 | |
| Letter from a supplier regarding a complaint about the quality of rubber hose connections and the provision of new samples. | 1st Dec 1938 | Box 135 \ 1 scan0256 | |
| Letter from Ferodo Limited discussing a failed Ferogrip belt and confirming a revised order for replacements. | 1st Dec 1938 | Box 135 \ 1 scan0257 | |
| Sectioned fan belt sent to Despatch Stores, intended for Messrs. Ferodo Ltd, but is marked as scrap and not to be returned. | 1st Dec 1938 | Box 135 \ 1 scan0258 | |
| Letter to Ferodo Ltd. regarding an unsatisfactory fan belt, piece No.EB.3927. | 2nd Dec 1938 | Box 135 \ 1 scan0259 | |
| Request to send an official order to Ferodo Ltd. for 6 fan belts which have already been received. | 6th Dec 1938 | Box 135 \ 1 scan0260 | |
| Letter from Ferodo Limited concerning the supply of replacement belts and arranging a meeting. | 6th Dec 1938 | Box 135 \ 1 scan0261 | |
| Letter from Ferodo Limited detailing a plan for fan and belt testing. | 14th Dec 1937 | Box 135 \ 1 scan0262 | |
| Fan belt tests, detailing the construction, performance, and failure analysis of a British Goodyear belt. | 14th Dec 1938 | Box 135 \ 1 scan0263 | |
| Fan belt tests for the British Goodyear N.8620B (No.2) belt. | 1st Mar 1938 | Box 135 \ 1 scan0264 | |
| Graph showing the results of a test on a British Goodrich No B20B vee-belt. | 1st Mar 1938 | Box 135 \ 1 scan0265 | |
| Graph showing the performance results of a Vee-Belt test on a British Goodrich N.8620B No.2 belt. | 7th Dec 1938 | Box 135 \ 1 scan0266 | |
| Letter to Goodyear Tyre & Rubber Co. regarding the failure of sample fan belts during testing. | 14th Dec 1938 | Box 135 \ 1 scan0267 | |
| The return of two scrap fan belts to Goodyear Tyre & Rubber Co. Ltd. | 15th Dec 1938 | Box 135 \ 1 scan0268 | |
| Letter to supplier Ferodo Ltd. regarding defective fan belts and the correctness of the production mould. | 19th Dec 1938 | Box 135 \ 1 scan0269 | |
| Issues of the Wraith fan fouling radiator bracing stays and proposed modifications. | 20th Dec 1938 | Box 135 \ 1 scan0270 | |
| Simple fan modification on a Wraith car. | 20th Dec 1938 | Box 135 \ 1 scan0271 | |
| Official order be sent to Ferodo Ltd. for Ferogrip Fan Belts. | 21th Dec 1938 | Box 135 \ 1 scan0272 | |
| Requesting instructions for trying out a shortened fan hub. | 21th Dec 1938 | Box 135 \ 1 scan0273 | |
| Letter to Ferodo Ltd. concerning discrepancies in the dimensions of recently delivered belts. | 21th Dec 1938 | Box 135 \ 1 scan0274 | |
| Letter from Goodyear discussing the condition of returned V-Belts that failed testing and offering replacements. | 21th Dec 1938 | Box 135 \ 1 scan0275 | |
| Letter from supplier Ferodo Limited regarding the dimensions of belts V.108 and EB.3948. | 22th Dec 1938 | Box 135 \ 1 scan0276 | |
| Letter from Ferodo Limited concerning the dimensions of fan belt EB.4202. | 30th Dec 1938 | Box 135 \ 1 scan0277 | |
| Letter from Ferodo Limited concerning an error found in belts and their associated measurements. | 30th Dec 1938 | Box 135 \ 1 scan0278 | |
| Extract from a letter detailing petrol filter gauze failure, attributing the cause to inferior petrol or Benzol. | 8th Sep 1919 | Box 135 \ 2 scan0001 | |
| General complaints regarding petrol filters, the deterioration of the filter gauze, and suggestions for improvements. | 6th Oct 1919 | Box 135 \ 2 scan0002 | |
| Performance of petrol filters and potential future design changes, with an investigation into issues caused by benzol or water. | 6th Oct 1919 | Box 135 \ 2 scan0003 | |
| Notes on a scheme for providing a two-gallon spare fuel capacity in the American petrol tank. | 24th Oct 1919 | Box 135 \ 2 scan0004 | |
| Trouble with gauze in petrol strainers, possibly caused by sulphur in benzol fuel. | 9th Feb 1920 | Box 135 \ 2 scan0005 | |
| Request for weekly progress reports on tests for petrol strainer gauze, as requested by Mr. Royce. | 17th Feb 1920 | Box 135 \ 2 scan0006 | |
| Adding non-standard items and potential improvements to a trials car for the American company. | 4th Mar 1920 | Box 135 \ 2 scan0007 | |
| Analysis and testing of a new copper-nickel gauze for petrol filters. | 8th Mar 1920 | Box 135 \ 2 scan0008 | |
| The failure of gauze petrol filters due to rotting and causing blockages in a customer's car. | 18th Mar 1920 | Box 135 \ 2 scan0009 | |
| The use of Nickel copper filter gauze for petrol filters. | 22th Mar 1920 | Box 135 \ 2 scan0010 | |
| The corrosion of petrol tank filters and pipes caused by poor quality fuel. | 27th Mar 1920 | Box 135 \ 2 scan0011 | |
| Recommendation to use Monelmetal gauze for petrol filters on the 40/50 chassis, replacing the current copper gauze. | 30th Mar 1920 | Box 135 \ 2 scan0012 | |
| Sourcing special mesh material for filter gauze from Canada due to local unavailability. | 18th May 1920 | Box 135 \ 2 scan0013 | |
| Design changes for the Magneto Drive and Petrol Tank on the American chassis. | 27th May 1920 | Box 135 \ 2 scan0014 | |
| Trouble with rotting filter gauges and corroding petrol pipes, inquiring about new designs for petrol tanks and filters. | 1st Jun 1920 | Box 135 \ 2 scan0015 | |
| Suggestion to incorporate an old inverted conical petrol filter onto American and imported chassis. | 11th Jun 1920 | Box 135 \ 2 scan0016 | |
| Distributing standardisation sheets for experiments on a hand pump bracket, petrol filter gauze, and rear shock absorbers. | 11th Jun 1920 | Box 135 \ 2 scan0017 | |
| Standardisation of petrol filter gauze to be made of Monel metal wire. | 28th May 1920 | Box 135 \ 2 scan0018 | |
| Recommending copper-nickel or monel gauzes over copper ones for petrol filters. | 27th May 1920 | Box 135 \ 2 scan0019 | |
| Change of material for the petrol tank filter gauze from copper to Monel metal to combat corrosion. | 17th Jun 1920 | Box 135 \ 2 scan0020 | |
| Failures of the petrol tank filter gauge material and proposed improvements. | 19th Jun 1920 | Box 135 \ 2 scan0021 | |
| Failure of gauze petrol filters on the 40/50 HP chassis and proposing a two-year replacement schedule. | 22th Jul 1919 | Box 135 \ 2 scan0022 | |
| Proposal to standardise the petrol tank with a side filler and relocate the petrol filter to the carburetter. | 20th Jul 1920 | Box 135 \ 2 scan0023 | |
| Modifications and suggestions for the petrol gauge, reserve devices, and filler assembly. | 31th Jul 1920 | Box 135 \ 2 scan0024 | |
| Continued memo regarding fuel tank design, including a gauging plug and petrol level indicator. | 1st Jul 1920 | Box 135 \ 2 scan0025 | |
| Requesting quick remarks on a letter concerning Monel Metal Gauze for Petrol Filters. | 8th Aug 1920 | Box 135 \ 2 scan0026 | |
| Letter to Mr. Claude Johnson regarding the adoption of Monel Metal Gauze for petrol filters. | 23th Jul 1920 | Box 135 \ 2 scan0027 | |
| History and communication surrounding the use of Monel Metal Gauze for petrol filters. | 7th Jul 1920 | Box 135 \ 2 scan0028 | |
| Communication regarding the standardization of Monel Metal gauze for petrol filters and coordinating with US and Canadian suppliers. | 6th Aug 1920 | Box 135 \ 2 scan0029 | |
| Potential use of Monel metal as an alternative to nickel brass for chassis components. | 23th Dec 1920 | Box 135 \ 2 scan0030 | |
| The superiority of a nickel-copper alloy over a zinc-based alloy for chassis components. | 23th Dec 1920 | Box 135 \ 2 scan0031 | |
| Corrosion of a filter gauge due to suspected impurities in American petrol. | 23th Dec 1920 | Box 135 \ 2 scan0032 | |
| The adoption of patented Monel metal gauze for petrol filters over standard copper gauze. | 11th May 1933 | Box 135 \ 2 scan0033 | |
| Requesting remarks in triplicate on attached documents concerning filter gauzes. | 21th Mar 1921 | Box 135 \ 2 scan0034 | |
| Filter gauzes, requesting a review by the Works' Committee and an opinion from Springfield. | 19th Mar 1921 | Box 135 \ 2 scan0035 | |
| Letter to the Works Committee regarding slow petrol tank filling due to a Monel Metal filter gauze. | 4th Mar 1921 | Box 135 \ 2 scan0036 | |
| The necessity and specifications for an inlet fuel filter, comparing materials and practices. | 4th Mar 1921 | Box 135 \ 2 scan0037 | |
| Problem with filling petrol tanks in the U.S.A. due to a monel metal gauze and the proposed solution. | 13th Apr 1921 | Box 135 \ 2 scan0038 | |
| Comparing petrol tank filling times using different filter materials and methods. | 13th Apr 1921 | Box 135 \ 2 scan0039 | |
| Forwarding correspondence with G. & J. Weir Ltd. about Monel metal usage and exclusive manufacturing rights. | 13th Jun 1921 | Box 135 \ 2 scan0040 | |
| The exclusive rights for Monel metal and the receipt of sheets for radiator and chassis plating. | 13th Jun 1921 | Box 135 \ 2 scan0041 | |
| Letter from G. & J. Weir Ltd promoting the use of Monel metal for various car components. | 7th Jun 1921 | Box 135 \ 2 scan0042 | |
| The concluding page of a letter from G & J Weir Ltd. | 6th Jul 1921 | Box 135 \ 2 scan0043 | |
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