| Description | Date | Identifier | |
| Hall's Metal Bearings, discussing adhesion, expansion rates, and yield points of bearing materials. | 28th Nov 1935 | Box 114 \ 2 scan0239 | |
| Technical memo discussing the properties and performance of white metal for engine bearings, focusing on tin content, adhesion, and yield point. | 28th Nov 1935 | Box 114 \ 2 scan0240 | |
| Letter to Ransome & Marles Bearing Co. Ltd. regarding a broken ball in a bearing after a dynamometer test and a request for a replacement with greater load capacity. | 28th Nov 1935 | Box 114 \ 2 scan0241 | |
| Clearance of lead bronze big end bearings fitted to a Bentley and the resulting high oil consumption. | 29th Nov 1935 | Box 114 \ 2 scan0242 | |
| Casting of an aluminium tin alloy for Bentley bearings to improve adhesion. | 2nd Dec 1935 | Box 114 \ 2 scan0243 | |
| The performance of a Solid Hall's Metal Bearing at low temperatures. | 4th Dec 1935 | Box 114 \ 2 scan0244 | |
| Testing solid Hall's metal bearings and requesting new bushes to be cast. | 4th Dec 1935 | Box 114 \ 2 scan0245 | |
| Testing slightly bell-mouthed lead bronze bearings to determine minimum running clearance. | 9th Dec 1935 | Box 114 \ 2 scan0246 | |
| Low-temperature experiment on solid Hall's metal bearings fitted to a Bentley crankshaft and crankcase. | 12th Dec 1935 | Box 114 \ 2 scan0247 | |
| Letter from Ransome & Marles Bearing Co. regarding a 35mm double row rear axle bearing. | 13th Dec 1935 | Box 114 \ 2 scan0248 | |
| Letter from Ransome & Marles Bearing Co. discussing alternative bearing schemes and a reported component failure after a dynamometer test. | 13th Dec 1935 | Box 114 \ 2 scan0249 | |
| Letter from Ransome & Marles Bearing Co., Ltd. requesting comments on their remarks to decide on future action. | 13th Dec 1935 | Box 114 \ 2 scan0250 | |
| Confirming the attachment of other memos complete with photographs. | 16th Dec 1935 | Box 114 \ 2 scan0251 | |
| Request to manufacture one set of solid Bentley main bearings with a 10% tin composition. | 17th Dec 1935 | Box 114 \ 2 scan0252 | |
| Letter concerning a US patent application for the lubrication of bearings and the feasibility of filing a corresponding British patent. | 19th Dec 1935 | Box 114 \ 2 scan0253 | |
| Patent application petition and specification for an improvement in bearings. | 19th Dec 1935 | Box 114 \ 2 scan0254 | |
| Invention for improving the lubrication of anti-friction bearings. | 19th Dec 1935 | Box 114 \ 2 scan0255 | |
| Patent specification page detailing issues with bearing lubrication and outlining the objectives of a new invention. | 19th Dec 1935 | Box 114 \ 2 scan0256 | |
| Detailed description of the form and function of an annular thrust bearing. | 19th Dec 1935 | Box 114 \ 2 scan0257 | |
| Description of a lubricating system for a bearing using porous, oil-permeable collars. | 19th Dec 1935 | Box 114 \ 2 scan0258 | |
| Description of various bearing types and lubrication methods using felt inserts. | 19th Dec 1935 | Box 114 \ 2 scan0259 | |
| Description of a lubrication system for bearings, detailing the operation of oil distribution via capillary action. | 19th Dec 1935 | Box 114 \ 2 scan0260 | |
| List of five claims for a Letters Patent concerning lubricated bearing combinations. | 19th Dec 1935 | Box 114 \ 2 scan0261 | |
| Specifications for lubricant distributing systems in ball and rolling bearings. | 19th Nov 1934 | Box 114 \ 2 scan0262 | |
| Oath sworn by Frank Schubert for a patent application concerning an improvement in Bearings. | 19th Nov 1934 | Box 114 \ 2 scan0263 | |
| Patent illustration for a ball bearing assembly. | 21th Dec 1935 | Box 114 \ 2 scan0264 | |
| Letter to Leyland Motors Ltd. discussing the development and potential issues of new aluminium bearing materials. | 21th Dec 1935 | Box 114 \ 2 scan0265 | |
| Main bearing clearance issues due to crankcase distortion and the potential solution of using bell-mouthed bearings. | 31th Dec 1935 | Box 114 \ 2 scan0266 | |
| Improved lubrication scheme, bearing cap interchangeability, and the use of forged shims. | 29th Sep 1936 | Box 114 \ 2 scan0267 | |
| From Sg. to Rm. regarding Bentley engine bearings, a trials car, and shims. | 29th Sep 1936 | Box 114 \ 2 scan0268 | |
| Recommendations for fitting different metal bearings to the Bentley Green Trials Car. | 30th Sep 1936 | Box 114 \ 2 scan0269 | |
| Rescheduling an appointment with the Hoyt Bearing Co. | 30th Sep 1936 | Box 114 \ 2 scan0270 | |
| Letter to The Hoyt Metal Co. of Gt. Britain Ltd. regarding the rescheduling of a works visit. | 30th Sep 1936 | Box 114 \ 2 scan0271 | |
| Instructions for improved rear main bearing lubrication. | 30th Sep 1936 | Box 114 \ 2 scan0272 | |
| Letter from Vandervell Products Ltd. acknowledging receipt of a letter and enclosed blueprints. | 30th Sep 1936 | Box 114 \ 2 scan0273 | |
| Forwarding a connecting rod with a bearing for comments. | 2nd Mar 1939 | Box 114 \ 3 scan0001 | |
| Technical bulletin establishing a standardized routine for oil flow tests on Bentley models. | 23th Feb 1939 | Box 114 \ 3 scan0002 | |
| The condition of Fabroil timing gears from chassis No. B.79.FC. | 10th Nov 1938 | Box 114 \ 3 scan0003 | |
| Proposed programme to investigate cylinder bore wear. | 13th Feb 1939 | Box 114 \ 3 scan0004 | |
| List of queries and action points regarding cylinder bore wear testing on various engines. | 13th Feb 1939 | Box 114 \ 3 scan0005 | |
| List of questions regarding engine production accuracy, experiments, bore wear, and ring tension. | 13th Feb 1939 | Box 114 \ 3 scan0006 | |
| Oil flow test and investigation of an engine knock complaint. | 7th Feb 1939 | Box 114 \ 3 scan0007 | |
| The performance of special Nickel Chrome Molybdenum Alloy cylinder blocks fitted to owner's cars. | 21th Feb 1939 | Box 114 \ 3 scan0008 | |
| The performance and testing of vehicle components like timing gears, engine oil, joints, and axles. | 21th Feb 1939 | Box 114 \ 3 scan0009 | |
| Component fittings, test mileages, and scheme updates for various car models including Phantom III, Bentley, and 25/30 HP. | 21th Feb 1939 | Box 114 \ 3 scan0010 | |
| Bentley owner using thin Mobiloil Arctic engine oil. | 3rd Oct 1938 | Box 114 \ 3 scan0011 | |
| Bentley owner's consent to use Arctic oil after a rebore, with details of the car and oil pressure readings. | 31th Oct 1938 | Box 114 \ 3 scan0012 | |
| Final test report for car B.21.KU - Lady Islington, detailing oil pressure after fitting new con rods. | 21th Feb 1939 | Box 114 \ 3 scan0013 | |
| Instructions for modifying Bentley crankshafts to prevent connecting rod failures by improving lubrication. | 23th Feb 1939 | Box 114 \ 3 scan0014 | |
| Modifications to the routine for conducting engine oil flow tests. | 22th Feb 1939 | Box 114 \ 3 scan0015 | |
| The failure of a No.2 Big End Bearing on car B.21.KU. | 17th Feb 1939 | Box 114 \ 3 scan0016 | |
| Failure of AC.9 material in a Bentley Chassis B.125-JY, owned by Sir James Heron Walker. | 9th Feb 1939 | Box 114 \ 3 scan0017 | |
| Measurements of big-end bearings for chassis B.125 J.Y. after 1061 miles. | 6th Feb 1939 | Box 114 \ 3 scan0018 | |
| Amount of 'nip' or interference fit for AC.9 bearings. | 8th Feb 1939 | Box 114 \ 3 scan0019 | |
| Seized bearings from chassis B.125-JY, concluding the driver is at fault for the damage. | 8th Feb 1939 | Box 114 \ 3 scan0020 | |
| Report page discussing bearing failures and attributing a specific case to insufficient oil in the sump. | 8th Feb 1939 | Box 114 \ 3 scan0021 | |
| Stocking of replacement crankshafts for the 4 1/4 litre Bentley. | 20th Jan 1939 | Box 114 \ 3 scan0022 | |
| Oil flow test results and subsequent engine analysis for chassis B.70.JD. | 20th Jan 1939 | Box 114 \ 3 scan0023 | |
| List of points refuting a statement about fixing an engine by adjusting bearings and fitting a large oil pump. | 21th Dec 1938 | Box 114 \ 3 scan0024 | |
| Letter detailing customer feedback on oil consumption, engine noise, and brake characteristics on Chassis No.B.172.FB. | 21th Dec 1938 | Box 114 \ 3 scan0025 | |
| Letter discussing experimental plugs and conveying holiday wishes. | 21th Dec 1938 | Box 114 \ 3 scan0026 | |
| Oil pressure readings taken during a road test at different speeds and conditions. | 14th Dec 1938 | Box 114 \ 3 scan0027 | |
| Bentley oil flow tests after Modification C, confirming satisfactory results and stopping further tests. | 14th Dec 1938 | Box 114 \ 3 scan0028 | |
| Requirement to change AC.9 bearings on Bentley chassis due to ageing. | 8th Dec 1938 | Box 114 \ 3 scan0029 | |
| AC.2 and AC.7 bearings, clarifying required allowances and issues with material growth. | 8th Dec 1938 | Box 114 \ 3 scan0030 | |
| Results of oil flow tests on several Bentley engines after Mod.C. | 8th Dec 1938 | Box 114 \ 3 scan0031 | |
| List of engines dealt with during December 1938, detailing mileage, test results, and owners. | 13th Jan 1939 | Box 114 \ 3 scan0032 | |
| Engine A.C.2. bearing changes, oil flow tests, and a summary of engines dealt with in 1938. | 13th Jan 1939 | Box 114 \ 3 scan0033 | |
| Bentley 4 1/4 Litre chassis engines from Kingsbury, detailing mileage, tests, failures and owners. | 5th Dec 1938 | Box 114 \ 3 scan0034 | |
| Confirming the provision of corrected data for modifications B and C. | 26th Oct 1938 | Box 114 \ 3 scan0035 | |
| Register of 4¼ Litre Bentley cars listing type, model, date, and owner. | 9th Aug 1938 | Box 114 \ 3 scan0036 | |
| Register of vehicle types, modifications, dates, and owners. | 9th Aug 1938 | Box 114 \ 3 scan0037 | |
| Typed list of records with columns for Type, Modification, Date, and Owner. | 9th Aug 1938 | Box 114 \ 3 scan0038 | |
| Register of items listed by type, modification, date, and owner. | 9th Aug 1938 | Box 114 \ 3 scan0039 | |
| Ledger page listing entries by type, modification, date, and owner for the JD and JY series. | 18th Oct 1938 | Box 114 \ 3 scan0040 | |
| Register of vehicle or engine series (KT, KU, LS) detailing types, modifications, dates, and owners. | 18th Oct 1938 | Box 114 \ 3 scan0041 | |
| Statistical summary of various series, including a breakdown of B.Mod failures. | 5th Dec 1938 | Box 114 \ 3 scan0042 | |
| The failure and urgent replacement of AC.2 bearings on Bentley chassis. | 5th Dec 1938 | Box 114 \ 3 scan0043 | |
| Covering memo attaching a copy of a previous memo regarding Bentley chassis with AC.2 bearings. | 5th Dec 1938 | Box 114 \ 3 scan0044 | |
| Examination of issues with AC.2 bearings on Bentley chassis. | 30th Nov 1938 | Box 114 \ 3 scan0045 | |
| Road failures and issues related to B.2.LS and AC.2 bearings in cars. | 5th Dec 1938 | Box 114 \ 3 scan0046 | |
| Investigation into issues with AC.2 bearings in Bentley engines, comparing them with AC.7 metal. | 5th Dec 1938 | Box 114 \ 3 scan0047 | |
| AC.2 engine bearing issues related to clearance, oil flow, and seizure under specific conditions. | 11th Oct 1938 | Box 114 \ 3 scan0048 | |
| Reasons for eliminating 'Modification D' related to Bentley chassis engine bearings. | 11th Oct 1938 | Box 114 \ 3 scan0049 | |
| Typed memorandum regarding the availability of a replacement engine and managing customer expectations. | 11th Oct 1938 | Box 114 \ 3 scan0050 | |
| Arrangements to run Capt. Bowater's 4¼ litre Bentley on Arctic oil. | 2nd Nov 1938 | Box 114 \ 3 scan0051 | |
| Use of Arctic Oil in a Bentley car following an engine rebore. | 29th Oct 1938 | Box 114 \ 3 scan0052 | |
| Procedures and timings for engine oil flow tests on different engine types. | 21th Nov 1938 | Box 114 \ 3 scan0053 | |
| Oil flow tests and time factors for cars fitted with AC.2 bearings. | 21th Nov 1938 | Box 114 \ 3 scan0054 | |
| Failed attempt to fit an anti-rattle device to a Bentley and Phantom III steering column. | 21th Nov 1938 | Box 114 \ 3 scan0055 | |
| The performance of AC.2 bearings in Bentley cars and a proposal for further examination. | 17th Nov 1938 | Box 114 \ 3 scan0056 | |
| The status and delivery of Oil Flow Test Rigs for Paris and Derby. | 23th Sep 1938 | Box 114 \ 3 scan0057 | |
| The inspection and fitting procedure for Halls metal shells from a connecting rod after an engine failure. | 21th Sep 1938 | Box 114 \ 3 scan0058 | |
| Ten-step procedure for operating the Oil Flow Test Machine. | 17th Oct 1938 | Box 114 \ 3 scan0059 | |
| Page 2 of a procedural document detailing an oil flow test for crankshafts and bearings. | 21th Sep 1938 | Box 114 \ 3 scan0060 | |
| The inspection and fitting procedure for Halls metal connecting rod shells after an engine failure. | 21th Sep 1938 | Box 114 \ 3 scan0061 | |
| Recurrent bearing failure on a Bentley car after a modification. | 11th Nov 1938 | Box 114 \ 3 scan0062 | |
| The implementation of AC2 bearing material and modified drilling on 4 1/4 litre Bentley engine crankshafts. | 5th Sep 1938 | Box 114 \ 3 scan0063 | |
| List of Bentley chassis fitted with AC2 bearing material. | 22th Sep 1938 | Box 114 \ 3 scan0064 | |
| Policy of fitting Halls metal connecting rod bearings and a larger oil pump to 3.5 Litre Bentley cars. | 22th Sep 1938 | Box 114 \ 3 scan0065 | |
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