| Description | Date | Identifier | |
| Letter of thanks from John Morris on Fleming's Hotel headed paper. | 12th Feb 1940 | Box 149 \ 3 scan0114 | |
| Petrol tank design, comparing materials and construction methods to reduce weight for a new model. | 12th Feb 1940 | Box 149 \ 3 scan0115 | |
| Comparison table of petrol tank weights for various car models. | 1st Feb 1940 | Box 149 \ 3 scan0116 | |
| Letter to Mr. Morris of S.U. Carburettor Co. regarding injection pumps, suggesting a verbal discussion is preferable. | 13th Feb 1940 | Box 149 \ 3 scan0117 | |
| Letter from The S.U. Carburetter Co. Ltd. to Mr. Robotham regarding the design of a simple 4-cylinder pump. | 15th Feb 1940 | Box 149 \ 3 scan0118 | |
| Standard and special order petrol tank capacities for various car chassis. | 16th Feb 1940 | Box 149 \ 3 scan0119 | |
| Letter to Messrs Baldwin's, Ltd. inquiring about the range, prices, and thicknesses of lead-coated sheet steel. | 20th Feb 1940 | Box 149 \ 3 scan0120 | |
| Enquiry to Messrs Shimwell & Co. Ltd. regarding the supply of lead-coated sheet steel. | 20th Feb 1940 | Box 149 \ 3 scan0121 | |
| Letter of inquiry to Dafen Tinplate & Galvanising Co. Ltd. regarding lead coated sheet steel. | 20th Feb 1940 | Box 149 \ 3 scan0122 | |
| Inquiry to Messrs R.B.Myars & Co. Ltd. regarding the supply and prices of lead coated sheet steel. | 20th Feb 1940 | Box 149 \ 3 scan0123 | |
| Enquiry into the availability and cost of lead-coated sheet metal in light gauges. | 23th Feb 1940 | Box 149 \ 3 scan0124 | |
| Note about a quotation for thin, lead-coated sheet steel, noting its common availability. | 1st Mar 1940 | Box 149 \ 3 scan0125 | |
| Letter to J.N. Morris of The S.U. Carburetter Co. Ltd. regarding the development of a cheap pump unit for an economical car engine. | 7th Mar 1940 | Box 149 \ 3 scan0126 | |
| Gum deposits in petrol tanks from Pool petrol and recommended cleaning solutions. | 11th Mar 1940 | Box 149 \ 3 scan0127 | |
| Letter from S.U. Carburetter Co. Ltd. discussing fuel injection apparatus and a modified control gear. | 11th Mar 1940 | Box 149 \ 3 scan0128 | |
| Letter from The S.U. Carburetter Co. Ltd. regarding experimental pump units and progress on a new carburetter. | 12th Mar 1940 | Box 149 \ 3 scan0129 | |
| Letter to The S.U. Carburetter Co. Ltd. arranging a meeting to discuss experimental pump units and the science of petrol injection. | 12th Mar 1940 | Box 149 \ 3 scan0130 | |
| Letter from The S.U. Carburetter Co. Ltd. confirming a meeting with W. A. Robotham. | 16th Mar 1940 | Box 149 \ 3 scan0131 | |
| The design of a 'Rippletto' 12-gallon petrol tank, including construction details and weight reduction. | 17th Apr 1940 | Box 149 \ 3 scan0132 | |
| Modifications to the 'Rippletto' petrol tank filler and the enclosure of associated prints. | 18th Apr 1940 | Box 149 \ 3 scan0133 | |
| Letter to S. U. Carburetters arranging a meeting to discuss electrical petrol pumps for a servicing manual. | 9th May 1940 | Box 149 \ 3 scan0134 | |
| Rejection of a Lucas electrically operated petrol reserve tap and the development of a replacement. | 22th May 1940 | Box 149 \ 3 scan0135 | |
| Drawings and parts for flexible petrol pipes, oil fittings, and petrol piping. | 17th Jun 1940 | Box 149 \ 3 scan0136 | |
| Letter discussing the characteristics and disadvantages of a Dickenson vane type pump. | 9th Sep 1940 | Box 149 \ 3 scan0137 | |
| Letter from S. Smith & Sons regarding a cable, pump tests, and arranging a meeting. | 12th Oct 1940 | Box 149 \ 3 scan0138 | |
| Letter from S. Smith & Sons discussing the Dickinson Pump, its inventor, and seeking an opinion on its potential. | 16th Sep 1940 | Box 149 \ 3 scan0139 | |
| Letter requesting the arrangement of tests for an inventor's claims of national importance. | 13th Sep 1940 | Box 149 \ 3 scan0140 | |
| Letter discussing feedback and correct testing methods for a Dickinson High Pressure Oil Pump. | 12th Sep 1940 | Box 149 \ 3 scan0141 | |
| Letter to C.W. Nicholls of S. Smith & Sons Ltd. regarding the completion of a pump test and arranging a meeting. | 16th Oct 1940 | Box 149 \ 3 scan0142 | |
| Requesting the dispatch of one B.V petrol pump on loan to Leyland Motors Ltd. | 16th Oct 1940 | Box 149 \ 3 scan0143 | |
| Letter to A.C. Sphinx Sparking Plug Co. requesting particulars of mechanical petrol pumps for a range of cars. | 17th Oct 1940 | Box 149 \ 3 scan0144 | |
| Letter from S. Smith & Sons deferring a visit to discuss the results of Bendix pump tests. | 18th Oct 1940 | Box 149 \ 3 scan0145 | |
| Continuation sheet of a letter from S. Smith & Sons (Motor Accessories) Ltd. | 1st Aug 1926 | Box 149 \ 3 scan0146 | |
| Telegram regarding a visit and a lunch invitation. | 1st Aug 1926 | Box 149 \ 3 scan0147 | |
| Telegram from Robotham arranging a meeting in Derby with Nicholls, Smith & Sons. | 19th Oct 1940 | Box 149 \ 3 scan0148 | |
| Thank you letter from S. Smith & Sons regarding a recent visit and discussions on equipment supply. | 24th Oct 1940 | Box 149 \ 3 scan0149 | |
| Experimental department report on performance tests of a Fluid Transfer Fuel Pump (Diekinson's). | 28th Oct 1940 | Box 149 \ 3 scan0150 | |
| Tests carried out on a fluid transfer fuel pump supplied by Messrs Fluid Transfer Ltd. | 28th Oct 1940 | Box 149 \ 3 scan0151 | |
| Description of tests conducted on a pump, detailing various delivery, depression, and vacuum performance characteristics. | 28th Oct 1940 | Box 149 \ 3 scan0152 | |
| Comparison of fuel pump performance, referencing tests MT.200 and MT.201. | 28th Oct 1940 | Box 149 \ 3 scan0153 | |
| Performance comparison and post-test condition report for three different pump types. | 24th Oct 1940 | Box 149 \ 3 scan0154 | |
| Drawing of a fluid transfer fuel pump, single rotor type, with a cutaway view of the patent bye-pass valve. | 24th Oct 1940 | Box 149 \ 3 scan0155 | |
| Performance graph for a fluid transfer fuel pump, showing delivery rate versus pump RPM under various conditions. | 24th Oct 1940 | Box 149 \ 3 scan0156 | |
| Performance graph for a fluid transfer fuel pump, plotting delivery rates against inlet depression and altitude. | 21th Oct 1940 | Box 149 \ 3 scan0157 | |
| Performance graph for a fluid transfer fuel pump, plotting delivery rate against delivery pressure. | 21th Oct 1940 | Box 149 \ 3 scan0158 | |
| Invoice from Smith's English Clocks Ltd. for a Sectric St. Ermin Green clock. | 25th Oct 1940 | Box 149 \ 3 scan0159 | |
| Thank you letter for a desk clock and a cover letter for a report on the Dickenson pump. | 31th Oct 1940 | Box 149 \ 3 scan0160 | |
| Letter to The S.U. Co. Ltd. concerning the development and testing of a plunger-type electrical petrol pump. | 3rd Dec 1940 | Box 149 \ 3 scan0161 | |
| The failure of the 'B' Side of a 2-B-50 petrol pump. | 13th Dec 1940 | Box 149 \ 3 scan0162 | |
| Letter to S.U. Carburetter Co. regarding the discontinuation of experimental work on petrol pumps and ordering replacement diaphragm units. | 18th Dec 1940 | Box 149 \ 3 scan0163 | |
| Letter from The S.U. Carburetter Co. Ltd. discussing the pre-war development and issues with a small plunger pump. | 6th Dec 1940 | Box 149 \ 3 scan0164 | |
| Letter from S.U. Carburetter Co. Ltd. regarding corrosion of a zinc filter bowl and pump noise issues. | 19th Dec 1940 | Box 149 \ 3 scan0165 | |
| Request to issue an official order to the S.U. Carburetter Co., Ltd. for petrol pump diaphragm units. | 19th Dec 1940 | Box 149 \ 3 scan0166 | |
| Series of tests for the 3.B.50 chassis, focusing on brake judder, wear, and cooling. | 24th Dec 1940 | Box 149 \ 3 scan0167 | |
| Outlining further tests on wheel hubs, brake drums, and issues with an A.C. pump. | 24th Dec 1940 | Box 149 \ 3 scan0168 | |
| Letter from S.U. Carburetter Co. Ltd. regarding the free-of-charge conversion of diaphragms. | 24th Dec 1940 | Box 149 \ 3 scan0169 | |
| Investigation into the failure of the 'B' side of a petrol pump. | 30th Dec 1940 | Box 149 \ 3 scan0170 | |
| Investigation into the failure of the 'B' side of a 2-B.50 petrol pump. | 27th Dec 1940 | Box 149 \ 3 scan0171 | |
| Letter of inquiry to The Correct Depth Gauge Co. regarding a petrol pump for testing. | 6th May 1941 | Box 149 \ 3 scan0172 | |
| Urgent request to A.C. Sphinx Sparking Plug Co. for a mechanical petrol pump with specific performance criteria. | 6th May 1941 | Box 149 \ 3 scan0173 | |
| Test instructions for an S.U. Quad Petrol Pump with hot petrol. | 21th May 1941 | Box 149 \ 3 scan0174 | |
| Listing seven suggestions for motor car improvements following a vehicle breakdown. | 11th May 1941 | Box 149 \ 3 scan0175 | |
| Letter to the Self-Priming Pump & Engineering Co., Ltd. regarding test results of their David type petrol pump. | 7th Jun 1941 | Box 149 \ 3 scan0176 | |
| Issues and developments regarding petrol pumps, axle failures, steering, and propeller shafts. | 28th May 1941 | Box 149 \ 3 scan0177 | |
| Gearbox failures, tyre performance, and pivot tightening issues. | 28th May 1941 | Box 149 \ 3 scan0178 | |
| Letter to Self-Priming Pump & Engineering Co. Ltd. to order four P.12a Mk.II petrol pump units after a successful test. | 19th Aug 1941 | Box 149 \ 3 scan0179 | |
| The design and production of a special 23-gallon petrol tank for the Senior Range and Bentley B chassis. | 9th Jan 1942 | Box 149 \ 3 scan0180 | |
| Statement on the use of petrol for private cars and transport vehicles for the period 29.03.1942 to 03.04.1942. | 7th Apr 1942 | Box 149 \ 3 scan0181 | |
| Stoneguards for a special 23-gallon petrol tank for the Senior Range. | 8th Apr 1942 | Box 149 \ 3 scan0182 | |
| Statement on petrol used by private and transport vehicles for the period 4.4.42 to 10.4.42 inclusive. | 11th Apr 1942 | Box 149 \ 3 scan0183 | |
| Statement on petrol used by private and transport vehicles from 11.4.42 to 17.4.42. | 18th Apr 1942 | Box 149 \ 3 scan0184 | |
| Weekly return of petrol used by departmental private cars and transport vehicles. | 30th Apr 1942 | Box 149 \ 3 scan0185 | |
| Statement on petrol used by private and transport vehicles for the period 18.4.42 to 24.4.42. | 30th Apr 1942 | Box 149 \ 3 scan0186 | |
| Record of fuel allocation for personnel's private cars. | 30th Apr 1942 | Box 149 \ 3 scan0187 | |
| Statement on petrol used by private cars and transport vehicles at the Clan Foundry, Belper. | 11th May 1942 | Box 149 \ 3 scan0188 | |
| Request to manufacture six brackets (part LeC.5191) with rubber mountings for the petrol pumps. | 2nd Oct 1936 | Box 149 \ 4 scan0001 | |
| The failure analysis of an S.U. Petrol Pump from Jack Barclay's Trials Car. | 2nd Oct 1936 | Box 149 \ 4 scan0002 | |
| Report attributing the causes of failure in both offside and nearside pumps. | 2nd Oct 1936 | Box 149 \ 4 scan0003 | |
| Noisy pumps and instructions for handling them at Cricklewood and Paris. | 2nd Oct 1936 | Box 149 \ 4 scan0004 | |
| Letter to S.U. Company Ltd. concerning petrol pipe connection caps, progress on high lift pumps for the Phantom III, and silencing existing pumps. | 3rd Oct 1936 | Box 149 \ 4 scan0005 | |
| Letter regarding the failure of G.3 diaphragms during testing and arranging a follow-up meeting. | 3rd Oct 1936 | Box 149 \ 4 scan0006 | |
| Request for a report on the performance of an S.U. Petrol pump with a silencing washer and G-3 diaphragms. | 5th Oct 1936 | Box 149 \ 4 scan0007 | |
| The testing and performance of a faulty Special S.U. Petrol Pump. | 6th Oct 1936 | Box 149 \ 4 scan0008 | |
| Petrol pump failures traced to faulty wireless condensors. | 6th Oct 1936 | Box 149 \ 4 scan0009 | |
| Notice regarding the dual-unit petrol pump design and the importance of routine checks. | 7th Oct 1936 | Box 149 \ 4 scan0010 | |
| Previously circulated Depot Sheet concerning the checking of S.U. Petrol Pumps. | 8th Oct 1936 | Box 149 \ 4 scan0011 | |
| Letter to The S.U. Company Ltd. arranging a meeting for the following day. | 8th Oct 1936 | Box 149 \ 4 scan0012 | |
| S.U. Petrol Pumps for the Phantom III, indicating the availability of a test rig for vapour lock work. | 9th Oct 1936 | Box 149 \ 4 scan0013 | |
| Testing an S.U. Petrol Pump as fitted to the Phantom III. | 2nd Oct 1936 | Box 149 \ 4 scan0014 | |
| Petrol pump performance tests, comparing delivery times at various temperatures using Pratt's Ethyl Petrol. | 2nd Oct 1936 | Box 149 \ 4 scan0015 | |
| Test report on fuel pump failures due to temperature, comparing standard and high lift pumps. | 2nd Oct 1936 | Box 149 \ 4 scan0016 | |
| Test results for various fuel pumps' ability to deal with vapour and the effects of temperature. | 2nd Oct 1936 | Box 149 \ 4 scan0017 | |
| Test results and analysis of standard pump performance with shortened stroke and G.3 diaphragms. | 2nd Oct 1936 | Box 149 \ 4 scan0018 | |
| Petrol pump issues concerning warped valves and circlip failures, with recommendations for material changes and optimal pump placement. | 2nd Oct 1936 | Box 149 \ 4 scan0019 | |
| Schematic diagram of an S.U. Petrol Pump Test Rig. | 2nd Oct 1936 | Box 149 \ 4 scan0020 | |
| Graph comparing the delivery performance of a High Lift (Ex 1) pump and a Standard pump at various temperatures. | 18th Aug 1936 | Box 149 \ 4 scan0021 | |
| Graph comparing the petrol delivery performance of an 'EX I Pump' versus a 'Standard S.U. Pump' at various temperatures. | 18th Aug 1936 | Box 149 \ 4 scan0022 | |
| Graph comparing the performance of various fuel pumps at different temperatures using Pratts Ethyl fuel. | 19th Aug 1936 | Box 149 \ 4 scan0023 | |
| Performance graph comparing different pump diaphragms against petrol temperature. | 20th Aug 1936 | Box 149 \ 4 scan0024 | |
| Letter from The S.U. Carburetter Co. Ltd discussing pump silencing and hammering issues. | 5th Oct 1936 | Box 149 \ 4 scan0025 | |
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