| Description | Date | Identifier | |
| Use of a standard F.S.22 footswitch versus producing a special model. | 7th Oct 1938 | Box 168a \ 2 img396 | |
| Listing new parts and blueprints for switchboxes on all chassis, in particular Bentley III & Bentley 50. | 25th Oct 1938 | Box 168a \ 2 img397 | |
| List of parts to be fitted to existing instrument boards. | 25th Oct 1938 | Box 168a \ 2 img398 | |
| Temporary scheme for grouping separate switches on an instrument board for testing and approval on a Bentley III. | 25th Oct 1938 | Box 168a \ 2 img399 | |
| Investigation into the failure of a starter switch on chassis VAL-46. | 6th Oct 1938 | Box 168a \ 2 img400 | |
| Revisions and modifications to the Starter Main Switch. | 16th Nov 1938 | Box 168a \ 2 img401 | |
| Notification of new parts for a modification to the starter main switch. | 8th Dec 1938 | Box 168a \ 2 img402 | |
| Modification instructions for a Contact Plate and Switch Bases, referencing specific alteration numbers. | 19th Dec 1938 | Box 168a \ 2 img403 | |
| Decision to revert to the standard main switch and provide mounting proposals. | 19th Dec 1938 | Box 168a \ 2 img404 | |
| Instructions regarding blueprints for a Starter Main Switch and mounting bracket for the Bentley V Chassis. | 12th Jan 1939 | Box 168a \ 2 img405 | |
| Distributing blueprints for footswitch components (washer, bush, roller) to prevent breakages of Tufnol rollers. | 30th Jan 1939 | Box 168a \ 2 img406 | |
| Directive to modify ignition and lighting switches for specific Bentley chassis models by replacing contact plates and rivets. | 6th Feb 1939 | Box 168a \ 2 img407 | |
| Instruction to produce a modified Contact Rivet with an inclined face for ignition and lighting switches on Bentley V and 50 chassis. | 18th Feb 1939 | Box 168a \ 2 img408 | |
| Internal order request for heater switch components for a Wraith 80 chassis. | 1st Mar 1939 | Box 168a \ 2 img409 | |
| Bench and endurance test results for a starter push button switch. | 2nd Mar 1939 | Box 168a \ 2 img410 | |
| The modification status of lighting and ignition switches for final testing. | 2nd Mar 1939 | Box 168a \ 2 img411 | |
| Scheme for a proposed new design of a modified lighting switch lever in black moulding material. | 6th May 1939 | Box 168a \ 2 img412 | |
| Operational issues and potential improvements for a lighting switch. | 8th Mar 1939 | Box 168a \ 2 img413 | |
| Examination and modification report on a solenoid type starter main switch. | 11th Mar 1939 | Box 168a \ 2 img414 | |
| The efficiency and reliability of cone type versus plain plungers. | 11th Mar 1939 | Box 168a \ 2 img415 | |
| Modifications and spring rating experiments for a lighting switch. | 14th Mar 1939 | Box 168a \ 2 img416 | |
| Specifications for two new springs designed for a lighting switch. | 17th Mar 1939 | Box 168a \ 2 img417 | |
| Alteration to the switchbox lever for Bentley V and Bentley 50 chassis. | 20th Mar 1939 | Box 168a \ 2 img418 | |
| Request to obtain and test a changeover switch for ignition coils on special Bentley cars. | 22th Mar 1939 | Box 168a \ 2 img419 | |
| Hand-drawn wiring diagram of an ignition circuit with a change-over switch. | 5th Apr 1939 | Box 168a \ 2 img420 | |
| Test report on a Smith's Dimmer Switch for DB.295, concluding it is not suitable for production due to overheating. | 5th Apr 1939 | Box 168a \ 2 img421 | |
| The development of a cheaper lighting switch, detailing issues with friction and contact shape. | 5th Apr 1939 | Box 168a \ 2 img422 | |
| Modifications to a switch's recesses, bridge, and contact spring for endurance testing. | 5th Apr 1939 | Box 168a \ 2 img423 | |
| Revised blueprints for the grouping of separate switches. | 17th Apr 1939 | Box 168a \ 2 img424 | |
| Blueprints for a Rheostat Switch - Car Heater Escutcheon Plate. | 24th Apr 1939 | Box 168a \ 2 img425 | |
| Letter from Compound Electro Metals Ltd. promoting their Elmet Metals product. | 25th Apr 1939 | Box 168a \ 2 img426 | |
| Cover page for a document about Elmet Metals for electrical contacts and resistance welding electrodes. | 25th Apr 1939 | Box 168a \ 2 img427 | |
| Composite metals for high-efficiency contact tips in electrical apparatus. | 25th Apr 1939 | Box 168a \ 2 img428 | |
| Promotional page for Elmet composite metals and alloys for electric resistance welding components. | 1st Feb 1939 | Box 168a \ 2 img429 | |
| Advertisement page from Compound Electro Metals Ltd. | 1st Feb 1939 | Box 168a \ 2 img430 | |
| Sending blueprints for the Lucas 'Fg.29' Footswitch for the Bentley V. | 2nd Aug 1939 | Box 168a \ 2 img431 | |
| Replacing an unsuitable Smith's dimmer switch with a more robust Lucas unit. | 17th May 1939 | Box 168a \ 2 img432 | |
| Scheme detailing modifications for the D.CD.1308 Starter Main Switch. | 20th May 1939 | Box 168a \ 2 img433 | |
| B.T.H. Changeover H.T. Switch for potential speed trials on a Paulin type car. | 1st Jun 1939 | Box 168a \ 2 img434 | |
| Incorrectly manufactured Lucas car-heater rheostat switches where the engraving is upside down. | 7th Jul 1939 | Box 168a \ 2 img435 | |
| Internal request to order various switches and escutcheons from the Lucas Co. for testing and new car production. | 24th Aug 1939 | Box 168a \ 2 img436 | |
| List of parts for the LOP. DB.2500 Starter Main Switch, applicable to all chassis. | 24th Aug 1939 | Box 168a \ 2 img437 | |
| Parts list for a starter main switch and associated components required for Section 7340. | 24th Aug 1939 | Box 168a \ 2 img438 | |
| Request for an estimated factory cost for three switches to drawing LCD.1507. | 4th Dec 1939 | Box 168a \ 2 img439 | |
| The estimated production costs for Ignition, Lighting, and Starter Switches. | 22th Dec 1939 | Box 168a \ 2 img440 | |
| Requesting an order for 6 ARL type switches for emergency replacement. | 15th Feb 1940 | Box 168a \ 2 img441 | |
| Request to obtain six M.R.L. type switches for the chassis electrical system. | 21th May 1940 | Box 168a \ 2 img442 | |
| Invoice from Joseph Lucas Ltd. for a switch and requesting a confirmatory order for payment. | 17th Apr 1940 | Box 168a \ 2 img443 | |
| Improvement to the starter switch cable mounting on the Bentley V. | 24th Oct 1940 | Box 168a \ 2 img444 | |
| Brief internal memo requesting necessary action to be taken based on comments. | 28th Oct 1940 | Box 168a \ 2 img445 | |
| Improvement to the battery cable routing for the starter switch on the Bentley V. | 24th Oct 1940 | Box 168a \ 2 img446 | |
| Modification to the starter main switch cable routing. | 28th Oct 1940 | Box 168a \ 2 img447 | |
| Letter to Lucas Ltd. requesting a suitable dipper switch and horn push for a steering column. | 25th Mar 1941 | Box 168a \ 2 img448 | |
| Letter to Lucas Ltd. regarding the supply of a compact dipper switch for a steering column. | 25th Mar 1941 | Box 168a \ 2 img449 | |
| Letter from Joseph Lucas Ltd. enclosing drawings for a Dipper Switch for Steering Column mounting. | 10th Apr 1941 | Box 168a \ 2 img450 | |
| Letter to Joseph Lucas Ltd. acknowledging receipt of drawings. | 16th Apr 1941 | Box 168a \ 2 img451 | |
| The dimensions and dashboard position of a Lucas Starter Switch. | 29th Apr 1941 | Box 168a \ 2 img452 | |
| Letter enclosing a drawing from J. Lucas Ltd. regarding starter switches for a suitability review. | 14th Oct 1941 | Box 168a \ 2 img453 | |
| Confirming the suitability of the Model ST810 Type C.W. Starter Switch. | 15th Oct 1941 | Box 168a \ 2 img454 | |
| Request to obtain a catalogue for small switch gear from A.F. Bulgin & Co. Ltd. | 15th Oct 1941 | Box 168a \ 2 img455 | |
| Request to obtain two micro reversing switches and a catalogue from Burgess Products Co. Ltd. | 15th Oct 1941 | Box 168a \ 2 img456 | |
| Request to obtain two stoneware jugs for battery maintenance. | 10th Dec 1941 | Box 168a \ 2 img457 | |
| Letter to Joseph Lucas Ltd. confirming the suitability of a sample switch for fog lamps and requesting to complete an order. | 14th Oct 1942 | Box 168a \ 2 img458 | |
| Letter to Joseph Lucas Ltd. regarding a new armature for a C45TV type dynamo and a midget ignition coil. | 9th Jul 1942 | Box 168a \ 3 img001 | |
| Letter from Joseph Lucas Ltd. regarding an armature for a C45T Dynamo on a 1933 Model Vauxhall 10HP car. | 3rd Jul 1942 | Box 168a \ 3 img002 | |
| Request for a drawing of a dynamo and starter motor for the small Myth engine to complete the crankcase drawings. | 24th Jul 1940 | Box 168a \ 3 img003 | |
| The supply of blue-prints for electrical components for the Myth Engine M.40. | 2nd Jun 1941 | Box 168a \ 3 img004 | |
| Letter to Lucas Ltd. regarding a C.5.HV type dynamo fitted to the Lagonda. | 16th Sep 1940 | Box 168a \ 3 img005 | |
| Letter from Joseph Lucas Limited responding to an enquiry about dynamos and vacuum units for distributors. | 30th Sep 1940 | Box 168a \ 3 img006 | |
| Page two of a letter from Joseph Lucas Ltd. about a modification to a distributor shank to fit an extra bracket. | 30th Sep 1940 | Box 168a \ 3 img007 | |
| C.A.V.-BOSCH leaflet for Compensated Voltage Control Dynamos. | 15th May 1940 | Box 168a \ 3 img008 | |
| New form of constant current generator mentioned in the 'Electrical Times'. | 15th May 1940 | Box 168a \ 3 img009 | |
| New constant current generator for car dynamos, referencing an article in the 'Electrical Times'. | 15th May 1940 | Box 168a \ 3 img010 | |
| Handover of parts for a Bentley 60 Dynamo. | 25th Apr 1940 | Box 168a \ 3 img011 | |
| The rebuilding of a dismantled B.60 type dynamo for bench tests. | 30th Apr 1940 | Box 168a \ 3 img012 | |
| Requesting the rebuilding of a B.60 type dynamo for bench tests. | 24th Apr 1940 | Box 168a \ 3 img013 | |
| Letter to Messrs. Lucas Ltd. regarding the return of brackets and an order for a starter motor and regulators. | 20th Apr 1940 | Box 168a \ 3 img014 | |
| Letter from Joseph Lucas Ltd. confirming receipt of special dynamo brackets and the return of sample patterns. | 18th Apr 1940 | Box 168a \ 3 img015 | |
| Letter to Messrs. Lucas Ltd. regarding the completion of special dynamo brackets and an omission due to missing drawing dimensions. | 9th Apr 1940 | Box 168a \ 3 img016 | |
| Forwarding of D.H. and C.H. brackets to Messrs. J. Lucas Ltd. for a special dynamo. | 8th Apr 1940 | Box 168a \ 3 img017 | |
| Letter to Lucas Ltd. regarding the completion and despatch of special dynamo brackets, noting some holes were omitted due to missing dimensions. | 9th Apr 1940 | Box 168a \ 3 img018 | |
| Letter to Messrs. Lucas Ltd. regarding dynamo bearings, starter motors, and a request for regulator units. | 6th Apr 1940 | Box 168a \ 3 img019 | |
| Faulty commutators on Bentley 60 & 80 Dynamos due to incorrect material usage. | 2nd Apr 1940 | Box 168a \ 3 img020 | |
| Failure of commutators on R.60 and R.80 Dynamos due to being built with miconite instead of pure mica, and proposing their replacement. | 30th Mar 1940 | Box 168a \ 3 img021 | |
| On faulty commutators for B.60 and B.80 Dynamos due to incorrect material being used in their construction. | 30th Jul 1940 | Box 168a \ 3 img022 | |
| The distribution of blueprints for a Lucas Dynamo Mounting and experimental parts. | 29th Mar 1940 | Box 168a \ 3 img023 | |
| Letter from Joseph Lucas Limited regarding a sample N.3048 bearing for Dynamo Brackets. | 21th Mar 1940 | Box 168a \ 3 img024 | |
| Requesting the removal and repair of a failed regulator unit and dynamo for a specific car. | 16th Mar 1940 | Box 168a \ 3 img025 | |
| The removal and replacement of a faulty dynamo for car 3.B.50. | 15th Mar 1940 | Box 168a \ 3 img026 | |
| Request to arrange for the removal and examination of a faulty dynamo. | 15th Mar 1940 | Box 168a \ 3 img027 | |
| Requesting the removal of a faulty dynamo from a car for examination and replacement. | 13th Mar 1940 | Box 168a \ 3 img028 | |
| Riplet detailing new drawings and components for Scheme No. PL. 104, covering the crankcase, water pump, and dynamo. | 8th Mar 1940 | Box 168a \ 3 img029 | |
| New drawings and alterations for the Ripplet's crankcase, cylinders, and dynamo. | 7th Mar 1940 | Box 168a \ 3 img030 | |
| Explaining the reason for not fitting a 5' dynamo on the Phantom model. | 24th Feb 1940 | Box 168a \ 3 img031 | |
| Dynamo selection for future cars, comparing different sizes and their performance characteristics. | 24th Feb 1940 | Box 168a \ 3 img032 | |
| Necessary corrections for a Dynamo to be fitted to a B.60 Ripplet engine. | 24th Feb 1940 | Box 168a \ 3 img033 | |
| Typical performance curves for a C45PV 12 Volt Dynamo and LRT9 Regulator. | 31th Mar 1939 | Box 168a \ 3 img034 | |
| Mounting and output of a Lucas dynamo model C.45.PV on a B.80 engine. | 23th Feb 1940 | Box 168a \ 3 img035 | |
| Continued memo explaining the reasoning behind not fitting a specific dynamo on the Phantom model. | 24th Feb 1940 | Box 168a \ 3 img036 | |
| The recommendation of fitting a five-inch dynamo to the 8-cylinder car versus a 4.5-inch dynamo for other models. | 24th Feb 1940 | Box 168a \ 3 img037 | |
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