| Description | Date | Identifier | |
| Change to 5/32' brass tubing for the centralised lubrication system based on a recommendation from Bijur Co. | 5th Oct 1927 | Box 26 \ 5 Scan090 | |
| Development, timeline, and estimated cost for a new central lubrication system. | 1st Oct 1927 | Box 26 \ 5 Scan091 | |
| Requesting the return of a centralised chassis lubrication model for demonstration at the Olympia Show. | 7th Oct 1927 | Box 26 \ 5 Scan092 | |
| Letter to Messrs. Benton & Stone Ltd. concerning a one-shot oiling system for testing. | 7th Oct 1927 | Box 26 \ 5 Scan093 | |
| Confirmation of dispatching an MX model Enots lubrication system to Benton & Stone Ltd. | 1st Oct 1927 | Box 26 \ 5 Scan094 | |
| New clip for the pipe running along the front springs for the centralised chassis lubrication system. | 8th Oct 1927 | Box 26 \ 5 Scan095 | |
| Letter to A.S. Cachemaille, Esq., declining interest in an invention and returning the patent specification. | 21th Oct 1927 | Box 26 \ 5 Scan096 | |
| Letter discussing the principles of lubrication, types of lubricants, and methods of application for moving parts. | 24th Oct 1927 | Box 26 \ 5 Scan097 | |
| Letter from F.H. Royce regarding lubrication methods for cranes and slow-moving car parts. | 25th Oct 1927 | Box 26 \ 5 Scan098 | |
| Receipt of drip plugs from America and the decision on whether to use them or wait for Banjo type plugs. | 25th Oct 1927 | Box 26 \ 5 Scan099 | |
| The dispatch of 108 drip plugs to Mr. Bailey at Derby. | 15th Sep 1927 | Box 26 \ 5 Scan100 | |
| List of drip plugs for Chassis 1766 and onwards. | 26th Oct 1927 | Box 26 \ 5 Scan101 | |
| Outlining the procedure for detailing the EAC.14 rear axle, addressing different lubrication schemes. | 26th Oct 1927 | Box 26 \ 5 Scan102 | |
| Principle of using smaller drip plugs in a centralised chassis lubrication system to manage oil flow. | 27th Oct 1927 | Box 26 \ 5 Scan103 | |
| Letter detailing the specifications and usage of different types of drip plugs for chassis lubrication. | 11th Nov 1927 | Box 26 \ 5 Scan104 | |
| Alternative drip plug placement for the front axle control damper's centralised lubrication system. | 1st Dec 1927 | Box 26 \ 5 Scan105 | |
| Seeking clarification on overlapping special chassis designs, specifically EAC.14 and EAC.10. | 9th Dec 1927 | Box 26 \ 5 Scan106 | |
| Request for a progress update on centralised chassis lubrication, noting it is an item in constant public demand. | 4th Jan 1928 | Box 26 \ 5 Scan107 | |
| The incorporation of Centralised Chassis Lubrication on the Phantom trial car. | 6th Jan 1928 | Box 26 \ 5 Scan108 | |
| The proposal to apply Bijur lubrication to the 12EX and Phantom models. | 17th Jan 1928 | Box 26 \ 5 Scan109 | |
| Water-pump lubrication issues and squeaking on the Phantom model, proposing a change in drip plug. | 17th Jan 1928 | Box 26 \ 5 Scan110 | |
| List of 'G' Department's List of Parts (LOPs) for a 40/50 Standard Phantom (Long Type) with the 'Bijur' Lubrication System. | 19th Jan 1928 | Box 26 \ 5 Scan111 | |
| Internal memorandum discussing the implementation of a centralised lubrication system on chassis. | 27th Jan 1928 | Box 26 \ 5 Scan112 | |
| The implementation schedule for centralised lubrication bosses on the 40/50 HP chassis. | 30th Jan 1928 | Box 26 \ 5 Scan113 | |
| Index sheet for the Bijur Lubrication system on a Short Type Chassis. | 9th Feb 1928 | Box 26 \ 5 Scan114 | |
| Central lubrication for the 20 HP model, attaching a copy of another memo on the subject. | 28th Feb 1928 | Box 26 \ 5 Scan115 | |
| Implementation and urgency of a central lubrication system on various car chassis. | 27th Feb 1928 | Box 26 \ 5 Scan116 | |
| Specifications for the 20 HP India 3 model, focusing on central oiling and universal joints. | 3rd Mar 1928 | Box 26 \ 5 Scan117 | |
| Covering note for a copy of a letter from Mr. Booth regarding Bijur Lubrication. | 16th Mar 1928 | Box 26 \ 5 Scan118 | |
| Letter concerning squeaky water pump bearings due to sludgy substance buildup in cars from the Springfield plant. | 12th Mar 1928 | Box 26 \ 5 Scan119 | |
| Letter discussing a complaint about excessive oiling from hot drip plugs and proposing a solution. | 27th Feb 1928 | Box 26 \ 5 Scan120 | |
| Improvements to the Phantom's front axle control damper lubrication. | 13th Mar 1928 | Box 26 \ 5 Scan121 | |
| Modification to the Phantom centralised chassis lubrication system for the front axle control damper lever. | 16th Mar 1928 | Box 26 \ 5 Scan122 | |
| Proposal for centralised chassis lubrication for the rear axle. | 7th Mar 1928 | Box 26 \ 5 Scan123 | |
| Centralised chassis lubrication for the India 3 model, including battery suspension and an experiment with cadmium plating. | 7th Mar 1928 | Box 26 \ 5 Scan124 | |
| Modifications to 5 drop plugs for centrepoint lubrication. | 13th Apr 1928 | Box 26 \ 5 Scan125 | |
| Central oiling system for the front anchorage of the rear spring. | 4th Apr 1928 | Box 26 \ 5 Scan126 | |
| Simplification of the central oiling connection to the back axle. | 4th Apr 1928 | Box 26 \ 5 Scan127 | |
| Fitting the rear shock damper stone shield to protect the lubricating pipe. | 15th Apr 1928 | Box 26 \ 5 Scan128 | |
| Alternatives for dipping headlamp controls to avoid the use of coils. | 15th Apr 1928 | Box 26 \ 5 Scan129 | |
| Applying centralised chassis lubrication to the front spring shackle, following the arrangement on the Phantom. | 18th Apr 1928 | Box 26 \ 5 Scan130 | |
| Testing of car 16-EX in France and proposed alterations to its lubrication system. | 23th Apr 1928 | Box 26 \ 5 Scan131 | |
| Expectations and limitations of a central oiling system for both chassis. | 25th Apr 1928 | Box 26 \ 5 Scan132 | |
| Modifications to a Phantom 12-EX car, including a new centralised chassis lubrication scheme and a serrated wearing pad for the rear spring. | 10th May 1928 | Box 26 \ 5 Scan133 | |
| Alternative proposals for a centralised chassis lubrication system on the front axle. | 10th May 1928 | Box 26 \ 5 Scan134 | |
| Simplified piping arrangement for the centralised chassis lubrication system. | 11th May 1928 | Box 26 \ 5 Scan135 | |
| Modifications to a wearing pad and roller bracket for central chassis lubrication on the rear axle. | 11th May 1928 | Box 26 \ 5 Scan136 | |
| Modifications to the clutch thrust to make it oil-retaining. | 16th May 1928 | Box 26 \ 5 Scan137 | |
| Arrangement of the Enots-Bijur centralised chassis lubrication system on the rear axle. | 16th May 1928 | Box 26 \ 5 Scan138 | |
| Outlining the proposed system for centralised chassis lubrication. | 17th May 1928 | Box 26 \ 5 Scan139 | |
| List of lubrication points for the centralised chassis lubrication Enots-Bijur system. | 17th May 1928 | Box 26 \ 5 Scan140 | |
| List of remarks and modifications for various vehicle components, presented in a tabular format. | 17th May 1928 | Box 26 \ 5 Scan141 | |
| List of isolated points for Unit D, with remarks on various components regarding lubrication and standardisation. | 17th May 1928 | Box 26 \ 5 Scan142 | |
| Modification for the centralised chassis lubrication of the universal joint and torque sphere. | 17th May 1928 | Box 26 \ 5 Scan143 | |
| Centralised chassis lubrication and an alteration to the rear anchorage of the front spring. | 17th May 1928 | Box 26 \ 5 Scan144 | |
| Proposed modification to the central oiling scheme for the 12-EX car. | 17th May 1928 | Box 26 \ 5 Scan145 | |
| Modifications required for a centralised chassis lubrication system. | 18th May 1928 | Box 26 \ 5 Scan146 | |
| Placement of an Enots oil nipple and the replacement of the Bijur pump. | 19th May 1928 | Box 26 \ 5 Scan147 | |
| Proposed changes to the axle control damper spindle for improved oil retention. | 19th May 1928 | Box 26 \ 5 Scan148 | |
| The rear anchorage of front springs adapted for centralised chassis lubrication. | 22th May 1928 | Box 26 \ 5 Scan149 | |
| Centralised chassis lubrication for the brake differential and hand brake lever. | 23th May 1928 | Box 26 \ 5 Scan150 | |
| Sample brass tubes for a centralised lubrication system and the results of comparative strength tests. | 20th Jan 1928 | Box 26 \ 5 Scan151 | |
| The lubrication schedule for the front brake differential shaft, pedals, and clutch operating shaft. | 26th May 1928 | Box 26 \ 5 Scan152 | |
| Drip arrangement for centralised chassis lubrication on the India 3 model. | 31th May 1928 | Box 26 \ 5 Scan153 | |
| Letter discussing the implementation of the Bijur lubrication system for the sphere and torque tube. | 4th Jun 1928 | Box 26 \ 5 Scan154 | |
| The merits and implementation of the Bijur lubrication system across the car. | 4th Jun 1928 | Box 26 \ 5 Scan155 | |
| Design improvements and recommendations for a pendulum lever and pipe assembly. | 5th Jun 1928 | Box 26 \ 5 Scan156 | |
| Instructions for a centralised chassis lubrication system, specifically for 'India 3'. | 5th Jun 1928 | Box 26 \ 5 Scan157 | |
| Sending sketches showing the arrangement for lubricating the brake gear on the rear axle. | 5th Jun 1928 | Box 26 \ 5 Scan158 | |
| Modification to the rear axle for the Enots/Bijur centralised chassis lubrication system. | 5th Jun 1928 | Box 26 \ 5 Scan159 | |
| Device for measuring hydraulic shock absorber efficiency and a reminder to get a chassis with centrepoint lubrication. | 8th Jun 1928 | Box 26 \ 5 Scan160 | |
| Urgent implementation of a central lubrication system for the 40/50 HP and 20 HP models. | 13th Jun 1928 | Box 26 \ 5 Scan161 | |
| Issue with pivot lubrication filters choking up and proposing redesigned filters as a solution. | 14th Jun 1928 | Box 26 \ 5 Scan162 | |
| Outlining chassis modifications and production urgency for the 'India' model, focusing on centralised lubrication systems. | 15th May 1928 | Box 26 \ 5 Scan163 | |
| The urgency of implementing a centralised lubrication system for the Phantom, dependent on the 20 HP model. | 19th Jun 1928 | Box 26 \ 5 Scan164 | |
| Covering memo forwarding a letter and chart from The Bijur Lubricating Corporation, and arranging for an oil sample. | 19th Jun 1928 | Box 26 \ 5 Scan165 | |
| Copy of a letter from Bijur Lubricating Corporation regarding the supply of oil for further tests of the Bijur System. | 8th Jun 1928 | Box 26 \ 5 Scan166 | |
| Letter from Luvax Limited concerning correspondence from the Bijur Lubricating Corporation about lubricating a universal joint. | 22th Jun 1928 | Box 26 \ 5 Scan167 | |
| Performance of the 40/50 centralised lubrication system after a 2500-mile test. | 26th Jun 1928 | Box 26 \ 5 Scan168 | |
| Design of a dashboard-mounted pump for the centralised chassis lubrication system. | 28th Jun 1928 | Box 26 \ 5 Scan169 | |
| Chassis improvements related to centre point lubrication and frame torsional stiffness. | 29th Jun 1928 | Box 26 \ 5 Scan170 | |
| Tests and development of chassis components including frame, brakes, springs, and dampers. | 29th Jun 1928 | Box 26 \ 5 Scan171 | |
| Design decisions on the water-heated throttle, steering, and suspension damping. | 29th Jun 1928 | Box 26 \ 5 Scan172 | |
| Note regarding design considerations for fitting double Hartford shock absorbers. | 5th Jul 1928 | Box 26 \ 5 Scan173 | |
| Short memo asking about the status of a new car lubrication system. | 5th Jul 1928 | Box 26 \ 5 Scan174 | |
| The progress and standardisation of a new central oiling scheme for the Phantom and 20 HP models. | 6th Jul 1928 | Box 26 \ 5 Scan175 | |
| Dashboard pump for centralised chassis lubrication on Phantom and India models. | 7th Jul 1928 | Box 26 \ 5 Scan176 | |
| Dashboard pump position for a centralised chassis lubrication system. | 11th Jul 1928 | Box 26 \ 5 Scan177 | |
| Dashboard pump, pedal, and distance pieces for the Phantom's centralised chassis lubrication system. | 17th Jul 1928 | Box 26 \ 5 Scan178 | |
| The testing of a centralised lubrication system and a cadmium-plated road spring. | 17th Jul 1928 | Box 26 \ 5 Scan179 | |
| Lubrication of the 'SS' rear damper connecting rod and the potential issue of mixing oils. | 9th Jul 1928 | Box 26 \ 5 Scan180 | |
| Centralised chassis lubrication, stating a pipe is to be dispensed with and no action will be taken on a fracture. | 19th Jul 1928 | Box 26 \ 5 Scan181 | |
| Modification to the Phantom's centralised chassis lubrication system due to a filter choking issue. | 21th Jul 1928 | Box 26 \ 5 Scan182 | |
| Letter from the American branch to Derby concerning a competitor's advertisement for a lubrication system. | 6th Aug 1928 | Box 26 \ 5 Scan183 | |
| Point of view on chassis lubrication, specifically excluding axles from the central system. | 11th Jul 1928 | Box 26 \ 5 Scan184 | |
| Improvements to washers in a centralised lubrication system. | 1st Aug 1928 | Box 26 \ 5 Scan185 | |
| Problems with aluminium washers in the centralised lubrication system causing oil leaks and disassembly issues. | 14th Jul 1928 | Box 26 \ 5 Scan186 | |
| Letter regarding the adoption of the Bijur lubrication system by various car manufacturers, with an attached press clipping. | 16th Aug 1928 | Box 26 \ 5 Scan187 | |
| Position of central lubrication for the 40/50 and 20 models, with handwritten notes about a date for other models. | 27th Aug 1928 | Box 26 \ 5 Scan188 | |
| The 10,000-mile test for two chassis models and the simultaneous introduction of a central oiling system. | 30th Aug 1928 | Box 26 \ 5 Scan189 | |
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