| Description | Date | Identifier | |
| Comparative summary of six different dynamo and regulator types, with a detailed analysis of the Aero Type U.B. | 3rd Nov 1922 | Box 31 \ 1 Scan138 | |
| The experimental testing and performance of a Bosch dynamo and regulator. | 3rd Nov 1922 | Box 31 \ 1 Scan139 | |
| The performance and issues with 6-volt and 12-volt Bijur electrical sets. | 3rd Nov 1922 | Box 31 \ 1 Scan140 | |
| The operation and design of various dynamo and regulator systems, specifically Liberty, Scott, and Westinghouse. | 13th Nov 1922 | Box 31 \ 1 Scan141 | |
| The performance of a vibrator regulator and suggestions for a new design. | 3rd Nov 1922 | Box 31 \ 1 Scan142 | |
| Suggestion to experimentally study regulators and develop a new design to prolong battery life. | 3rd Nov 1922 | Box 31 \ 1 Scan143 | |
| Providing electrical diagrams and descriptions for external voltage and current regulators for chassis dynamos. | 14th Nov 1922 | Box 31 \ 1 Scan144 | |
| Schematic diagrams and descriptions for two types of external chassis dynamo-regulators. | 14th Nov 1922 | Box 31 \ 1 Scan145 | |
| Continued description of a regulator's operation, involving carbon granules, an auxiliary contact, and an operating coil. | 14th Nov 1922 | Box 31 \ 1 Scan146 | |
| The operation of a Bijur Vibrator Regulator and Dynamo. | 14th Nov 1922 | Box 31 \ 1 Scan147 | |
| Wiring diagram for the connections of a Bijur dynamo, regulator and cutout. | 14th Nov 1922 | Box 31 \ 1 Scan148 | |
| Circuit diagrams for a Liberty Dynamo & Regulator and a Westinghouse Dynamo & Regulator. | 14th Nov 1922 | Box 31 \ 1 Scan149 | |
| Descriptions of the Scott, Liberty Dynamo, and Westinghouse Dynamo & Vibrator regulators. | 14th Nov 1922 | Box 31 \ 1 Scan150 | |
| Circuit diagram for a post-war R. Bosch dynamo and regulator unit. | 16th Nov 1922 | Box 31 \ 1 Scan151 | |
| Description of the operation of post-War R. Bosch external voltage and current regulators for chassis dynamos. | 16th Nov 1922 | Box 31 \ 1 Scan152 | |
| Suggestion to acquire an up-to-date Bosch electrical set suitable for the Goshawk engine to test the system. | 16th Nov 1922 | Box 31 \ 1 Scan153 | |
| Requesting a trial of a Westinghouse Vibrator for dynamo control on the Goshawk 11 lighting system. | 9th Dec 1922 | Box 31 \ 1 Scan154 | |
| Points for consideration and experiment on dynamos and other electrical equipment. | 30th May 1923 | Box 31 \ 1 Scan155 | |
| Preliminary report on dynamo investigations, covering regulation, brush sparking, failures, and patents. | 2nd Jun 1923 | Box 31 \ 1 Scan156 | |
| List of patent specifications in connection with vibrator regulator control of chassis dynamos. | 21th Jun 1923 | Box 31 \ 1 Scan157 | |
| The investigation of patents for chassis dynamo external regulators. | 12th Jul 1923 | Box 31 \ 1 Scan158 | |
| Summary list of patents with brief descriptions, categorized under Bosch, Bijur, and others. | 2nd Jul 1923 | Box 31 \ 1 Scan159 | |
| Sending patent specifications for chassis dynamo external regulators. | 3rd Jul 1923 | Box 31 \ 1 Scan160 | |
| Sending of patent specifications for chassis dynamo external regulators. | 4th Jul 1923 | Box 31 \ 1 Scan161 | |
| Cover note for patent specifications regarding chassis dynamo external regulators. | 5th Jul 1923 | Box 31 \ 1 Scan162 | |
| The general tests for combined dynamo and external regulators. | 10th Sep 1923 | Box 31 \ 1 Scan163 | |
| Procedure for observing dynamo charge and delivery under combined battery and conductance loads. | 10th Sep 1923 | Box 31 \ 1 Scan164 | |
| Requirements for car batteries, favouring reliability and efficient charging over greater capacity. | 20th Sep 1923 | Box 31 \ 1 Scan165 | |
| Reliability of Springfield electrical equipment, including Westinghouse and American Bosch components. | 8th Oct 1923 | Box 31 \ 1 Scan166 | |
| Secret memo discussing the design for an automatic advance for magneto/battery ignition and a vibrator control for the dynamo. | 1st Jan 1924 | Box 31 \ 1 Scan167 | |
| Vibrator control systems for dynamos, referencing R. Bosch systems as a potential reliable option. | 12th Jan 1924 | Box 31 \ 1 Scan168 | |
| The Bosch cutout unit's red lamp feature and a proposed silent starter motor control. | 12th Jan 1924 | Box 31 \ 1 Scan169 | |
| Extract noting an observation on a Renault car's crude but working vibrator system. | 29th Apr 1924 | Box 31 \ 1 Scan170 | |
| Technical paper on the voltage regulation of automotive electrical systems, including different generator types and performance charts. | 1st Jun 1925 | Box 31 \ 1 Scan171 | |
| Journal page discussing voltage regulation and automotive electrical systems, including shunt-wound and compound-wound generators. | 1st Jun 1925 | Box 31 \ 1 Scan172 | |
| Technical paper on the voltage regulation of electrical systems, focusing on different generator types and their application in vehicles. | 1st Jun 1925 | Box 31 \ 1 Scan173 | |
| Journal article detailing the design, function, and adjustment of a 12-volt automotive voltage regulator. | 1st Jun 1925 | Box 31 \ 1 Scan174 | |
| Journal page discussing the voltage regulation of electrical systems, with a comparison of generator types using performance graphs. | 1st Jun 1925 | Box 31 \ 1 Scan175 | |
| Journal article comparing regulated-input and third-brush input electrical generator systems for battery charging. | 1st Jun 1925 | Box 31 \ 1 Scan176 | |
| Technical paper on the electrical regulation of automotive systems, featuring performance curves and a summary of voltage-regulation advantages. | 1st Jun 1925 | Box 31 \ 1 Scan177 | |
| Page from an automotive engineering journal discussing motorbus lighting, standards of measure, and car sales financing. | 1st Jun 1925 | Box 31 \ 1 Scan178 | |
| Circuit diagrams for a Ward-Leonard Dynamo, Vibrator-Regulator, and Cut-Out. | 24th Sep 1924 | Box 31 \ 1 Scan179 | |
| Self-starter, attaching a production card for armature wedges and an instruction sheet, with associated electrical diagrams. | 5th Jun 1914 | Box 31 \ 1 Scan180 | |
| Notes on the dynamo-battery combination of a chassis electrical system. | 16th Jun 1926 | Box 31 \ 1 Scan181 | |
| Developing an automatic voltage-operated cutout for a dynamo system. | 16th Jun 1926 | Box 31 \ 1 Scan182 | |
| Report comparing ignition ballast resistance characteristics and observations on battery charging methods and true E.M.F. | 11th Jun 1926 | Box 31 \ 1 Scan183 | |
| Continued discussion on battery internal resistance, charging rates, and electromotive force. | 16th Jun 1926 | Box 31 \ 1 Scan184 | |
| Explaining the functioning of the dynamo-battery combination in a chassis electrical system. | 12th Jun 1926 | Box 31 \ 1 Scan185 | |
| Continued explanation of the main field winding and dynamo-battery charging circuit, including potential fault conditions. | 12th Jun 1926 | Box 31 \ 1 Scan186 | |
| The effects of poor electrical connections in a dynamo-battery circuit, including heating and resistance management. | 12th Jun 1926 | Box 31 \ 1 Scan187 | |
| The fundamental flaws and potential failure points of dynamo-battery systems. | 12th Jun 1926 | Box 31 \ 1 Scan188 | |
| Page discussing the ideal chassis electrical system, focusing on dynamo-battery combinations and voltage regulation. | 12th Jun 1926 | Box 31 \ 1 Scan189 | |
| The principles of voltage and current regulation using an external regulator in a dynamo-based electrical system. | 12th Jun 1926 | Box 31 \ 1 Scan190 | |
| The regulation of field current using vibrating contacts and electro-magnetic windings. | 12th Jun 1926 | Box 31 \ 1 Scan191 | |
| Technical discussion on the principles and practical difficulties of battery charging and field current regulation systems. | 12th Jun 1926 | Box 31 \ 1 Scan192 | |
| Compromise design for dynamo regulation using field resistance. | 12th Jun 1926 | Box 31 \ 1 Scan193 | |
| Description of an electro-magnetically operated relay switch used in a dynamo system. | 12th Jun 1926 | Box 31 \ 1 Scan194 | |
| Operational description of the electrical charging and regulation system under different engine and load conditions. | 12th Jun 1926 | Box 31 \ 1 Scan195 | |
| Continued discussion on the operation and advantages of an automatic switch in the vehicle's electrical system. | 12th Jun 1926 | Box 31 \ 1 Scan196 | |
| The chassis electrical system, specifically the generator and regulator. | 24th Jul 1926 | Box 31 \ 1 Scan197 | |
| Recommending the use of a voltage regulator and an overload cutout for the generator charging system. | 8th Oct 1926 | Box 31 \ 1 Scan198 | |
| Design and faults of chassis generator and regulator systems, with reference to American and German manufactured parts. | 8th Oct 1926 | Box 31 \ 1 Scan199 | |
| Compromises in dynamo design for battery charging systems. | 8th Oct 1926 | Box 31 \ 1 Scan200 | |
| Adding an automatically operated electro-magnetic switch to the dynamo's field winding. | 8th Oct 1926 | Box 31 \ 1 Scan201 | |
| Analysis of the reliability of an electrical system's relay switch and ballast resistance. | 8th Oct 1926 | Box 31 \ 1 Scan202 | |
| Continued page describing the operation of an automatic electrical switch and charging system. | 8th Oct 1926 | Box 31 \ 1 Scan203 | |
| Bench tests of three different devices designed to prevent the overcharging of a battery, including a description of the Mentor device. | 8th Oct 1926 | Box 31 \ 1 Scan204 | |
| Comparison of three electrical devices (voltmeter, Mentor, and electro-magnetic switch) based on their operational requirements and reliability. | 25th Apr 1929 | Box 31 \ 1 Scan205 | |
| Method from the 'Electrical Review' for reducing sparking and wear of regulator contacts. | 25th Apr 1929 | Box 31 \ 1 Scan206 | |
| Cover letter for an attached report and description of a battery overcharge preventer. | 13th Nov 1929 | Box 31 \ 1 Scan207 | |
| The design and function of a battery protector to prevent overcharging when testing dynamos. | 13th Nov 1929 | Box 31 \ 1 Scan208 | |
| Two hand-drawn electrical circuit diagrams for a dynamo charging system, labelled 'A' and 'B'. | 21th Nov 1929 | Box 31 \ 1 Scan209 | |
| Battery overcharging and undercharging issues, considering solutions and lamp economy. | 21th Nov 1929 | Box 31 \ 1 Scan210 | |
| Typed letter from 'EFC' critiquing a proposal for an overcharge preventer. | 9th Dec 1929 | Box 31 \ 1 Scan211 | |
| Article from 'The Autocar' magazine about a new method of manufacturing Wood-Milne tyres to prevent premature bursts by weaving the fabric in one piece. | 24th Aug 1912 | Box 31 \ 1 Scan212 | |
| Favourable reports on Wood Milne tyres and a request to try some. | 26th Jul 1914 | Box 31 \ 1 Scan213 | |
| Internal order to procure Wood Milne tyres for testing purposes. | 29th Jul 1914 | Box 31 \ 1 Scan214 | |
| Guarantees for Wood-Milne tyres. | 1st Sep 1914 | Box 31 \ 1 Scan215 | |
| Tyre guarantee from Wood-Milne Ltd. for 3,500 miles. | 1st Mar 1914 | Box 31 \ 1 Scan216 | |
| Load, inflation, and horsepower table for different tyre sizes and vehicle weights. | 2nd Sep 1914 | Box 31 \ 1 Scan217 | |
| The receipt of three Grooved Tread Wood Milne Tyres for an experiment. | 2nd Sep 1914 | Box 31 \ 1 Scan218 | |
| Road test report tracking mileage and remarks on tyre performance. | 22th Jan 1915 | Box 31 \ 1 Scan219 | |
| Requesting mileage records for Wood-Milne tyres, with a handwritten reply detailing the figures. | 4th Mar 1915 | Box 31 \ 1 Scan220 | |
| The mileage performance of Wood-Milne tyres fitted to chassis 7CA. | 10th Mar 1915 | Box 31 \ 1 Scan221 | |
| Test of Wood-Milne brand tyres. | 10th Mar 1915 | Box 31 \ 1 Scan222 | |
| Tyres finding no advantages over Dunlop or Michelin, with hardness in riding considered a bad feature. | 2nd Jun 1921 | Box 31 \ 1 Scan223 | |
| Blueprints for a modified Woodmilne tyre pump connection proposed by Mr. Royce. | 2nd Jun 1921 | Box 31 \ 1 Scan224 | |
| Recommending the modern Wood Milne 'Boyce' push-on tyre pump connection over the old-fashioned screw type. | 2nd Jun 1921 | Box 31 \ 1 Scan225 | |
| Proposal by Mr. Royce for a modified Woodmilne tyre pump connection and washer. | 5th May 1921 | Box 31 \ 1 Scan226 | |
| Issues with a washer, union nut, and nipple. | 1st May 1921 | Box 31 \ 1 Scan227 | |
| Note about an insulated switch fitted to a steering column for a 6 volt coil. | 27th Jul 1914 | Box 31 \ 2 Scan001 | |
| The testing and implementation of a 6-volt ignition coil, including wiring recommendations. | 27th Jul 1914 | Box 31 \ 2 Scan002 | |
| Issues with connecting ignition to batteries and the solution of making their own dynamos. | 27th Jul 1914 | Box 31 \ 2 Scan003 | |
| Instruction sheet for fitting an experimental insulated ignition switch, requiring modifications to the engine guard and steering gear shield. | 3rd Sep 1914 | Box 31 \ 2 Scan004 | |
| Instruction sheet regarding the creation of patterns for steering control gear from B prints. | 11th Sep 1914 | Box 31 \ 2 Scan005 | |
| Instruction sheet regarding the substitution of a part for the steering mechanism. | 14th Dec 1914 | Box 31 \ 2 Scan006 | |
| Development, testing, and standardization process of a 6-volt coil. | 13th Jan 1915 | Box 31 \ 2 Scan007 | |
| Delay in parts with ebonite-e insulation and the plan to fit a switch to Mr. Royce's next car, 49-GB. | 13th Jan 1915 | Box 31 \ 2 Scan008 | |
| The supply of parts for the Northcliffe & Williamson Ignition Switch. | 14th Jan 1915 | Box 31 \ 2 Scan009 | |
| Chasing an overdue delivery of insulated segments for a Northcliffe & Williamson Ignition Switch. | 22th Jan 1915 | Box 31 \ 2 Scan010 | |
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