Rolls-Royce Archives
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
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Order request for headlamps for a Bentley II chassis, which was subsequently cancelled.10th Dec 1937Box 167 \ 1  img223
Internal request to obtain an all-chromium fog lamp with spherical joints from Butlers Ltd.10th Dec 1937Box 167 \ 1  img224
Adaptability of Lucas R.100 headlamps for continental use and comparing different lighting systems.15th Dec 1937Box 167 \ 1  img225
Proposal to modify headlamps with a handed dipping reflector for driving in Continental Europe.15th Dec 1937Box 167 \ 1  img226
Wiring diagrams for a headlamp dipper system showing the present system, required extra parts, and a configuration for continental use.15th Dec 1935Box 167 \ 1  img227
Despatch note to Messrs. Butlers Ltd. for the exchange of a Type FL.57C Fog Lamp.21th Dec 1937Box 167 \ 1  img228
Fitting of two pairs of improved P.100 headlamps to experimental cars.6th Jan 1938Box 167 \ 1  img229
Request to obtain one dozen 6V 3WT pea lamps, with a sample provided.11th Jan 1938Box 167 \ 1  img230
Testing headlamp dipping arrangements for English and Continental driving conditions.12th Jan 1938Box 167 \ 1  img231
The effectiveness of fog lamps and potential improvements using dipping reflectors.12th Jan 1938Box 167 \ 1  img232
Headlight configurations suitable for both English and Continental driving conditions.13th Jan 1938Box 167 \ 1  img233
The effectiveness of different headlamp and fog lamp configurations for driving in fog.13th Jan 1938Box 167 \ 1  img234
The unsuitability of the R.100 headlamp's dipping reflector for use abroad and the impractical adjustments required.13th Jan 1938Box 167 \ 1  img235
Trial of a spotlight with a dipping reflector.13th Jan 1938Box 167 \ 1  img236
Notification about the substitution of Wind Tone Horns on Wraith 6 Sets due to supplier unavailability.14th Jan 1938Box 167 \ 1  img237
Order for two Lucas D.10 type Festoon lamps with an ebony black finish.18th Jan 1938Box 167 \ 1  img238
The replacement of a fog lamp on chassis B.43.AE.18th Jan 1938Box 167 \ 1  img239
Failed 25/30 headlamp bulb that caused a main fuse to blow, resulting in a complete blackout.19th Jan 1938Box 167 \ 1  img240
New scheme for adapting Lucas R.IOO headlamps for Continental use, proposing a switch instead of rewiring.20th Jan 1938Box 167 \ 1  img241
Dipping scheme changeover for R.100 headlamps, indicating Lucas will supply the model parts.28th Jan 1938Box 167 \ 1  img242
Query regarding the implementation and success of a dipping scheme changeover for R.100 headlamps.16th Feb 1938Box 167 \ 1  img243
Requesting the creation of a prototype under-bonnet lamp for testing purposes.16th Feb 1938Box 167 \ 1  img244
The standardization of 48-watt headlamp bulbs.2nd Mar 1938Box 167 \ 1  img245
Letter from Joseph Lucas Ltd regarding the availability and lead time for non-standard 12V, 48W bulbs for R100 Headlamps.2nd Mar 1938Box 167 \ 1  img246
The costs and functionality for Lucas R.100 headlamps with continental changeover switches.4th Mar 1938Box 167 \ 1  img247
Proposing a trial of standard headlamps with two different dip settings.11th Mar 1938Box 167 \ 1  img248
Suggesting a modification to the Lucas R.100 headlamp dip plunger for Phantom III, Wraith, and Bentley models.10th Mar 1938Box 167 \ 1  img249
Shorter plunger for headlamps and reducing the angle of dip for a continental changeover.11th Mar 1938Box 167 \ 1  img250
Letter to Joseph Lucas Ltd. regarding the design of dummy headlamps for a Bentley model.11th Mar 1938Box 167 \ 1  img251
Proposing a trial of two pairs of standard headlamps with different dip settings.11th Mar 1938Box 167 \ 1  img252
Modification to the headlamp plunger to reduce the dipping angle for English and Continental driving conditions.10th Mar 1938Box 167 \ 1  img253
Plunger dimensions and headlamp dip for Lucas R.100 units on Phantom III, Wraith, and Bentley models.11th Mar 1938Box 167 \ 1  img254
Proposal for under bonnet lighting for all chassis, utilising a Lucas Inspection Lamp.11th Mar 1938Box 167 \ 1  img255
Projected design for headlamps and passlamps for the Myth Chassis.12th Nov 1940Box 167 \ 1  img256
Instructions and parts list for installing under-bonnet lighting for all chassis, in particular the Wraith.28th Mar 1938Box 167 \ 1  img257
Letter to Joseph Lucas Ltd. regarding the procurement and specifications of headlamps.30th Mar 1938Box 167 \ 1  img258
The arrangement of a light under the bonnet for the Wraith III.2nd Apr 1938Box 167 \ 1  img259
Headlamp brackets, discussing alternative lamp models and suggesting a brass die-cast socket to reduce costs.11th Apr 1938Box 167 \ 1  img260
Lamps, horns, and fittings for the Bentley 50 model, including alternative parts and required blueprints.29th Apr 1938Box 167 \ 1  img261
Tests carried out on 3.5-volt lamps for instrument-group lighting following frequent failures.10th Jun 1938Box 167 \ 1  img262
The lifespan testing of lamps under various voltage conditions and wiring configurations.10th Jun 1938Box 167 \ 1  img263
Analysis of the performance, issues, and potential solutions for running a set of lamps, focusing on voltage sensitivity and lifespan.15th Jun 1938Box 167 \ 1  img264
Proposed change to the instrument group lighting for the Wraith model.15th Jun 1938Box 167 \ 1  img265
Proposal for the instrument group lighting on the Wraith model.15th Jun 1938Box 167 \ 1  img266
Letter from James Neale & Sons Ltd concerning tests and improvements to their 'METEOR' No-Dazzle Driving Lamp.24th Jun 1938Box 167 \ 1  img267
The return of a corroded Lucas QBD.167-E.5. type headlamp reflector for repair.12th Jul 1938Box 167 \ 1  img268
Order for half a dozen bulbs for a Motorola radio.13th Jul 1938Box 167 \ 1  img269
Letter from Joseph Lucas Ltd. regarding the despatch of a repaired headlamp.19th Jul 1938Box 167 \ 1  img270
Letter from The British Thomson-Houston Company Ltd regarding newly developed twin filament headlamp bulbs.3rd Aug 1938Box 167 \ 1  img271
Letter from a lamp manufacturer confirming the dispatch of sample anti-dazzle headlamp bulbs for testing.8th Aug 1938Box 167 \ 1  img272
Letter to British Thomson Houston Co. Ltd. regarding the incompatibility of submitted twin filament headlamp bulbs.19th Aug 1938Box 167 \ 1  img273
Returning unsuitable headlamp bulbs to the manufacturer for replacement.20th Aug 1938Box 167 \ 1  img274
Returning unsuitable headlamp bulbs and a holder to the manufacturer for correctly dimensioned replacements.24th Aug 1938Box 167 \ 1  img275
Letter regarding the testing of 'U'Filament Regulation Headlamps.24th Aug 1938Box 167 \ 1  img276
Letter from a supplier regarding incorrect headlamp bulbs and requesting further specifications.30th Aug 1938Box 167 \ 1  img277
Arranging for a headlamp bulb to be despatched to The British Thomson-Houston Co. Ltd.31th Aug 1938Box 167 \ 1  img278
Letter to The British Thomson-Houston Co. Ltd. about special headlamp bulbs.31th Aug 1938Box 167 \ 1  img279
The postage of a sample headlamp bulb to The British Thomson-Houston Co. Ltd.31th Aug 1938Box 167 \ 1  img280
Letter from The British Thomson-Houston Company regarding the dispatch of sample regulation bulbs.5th Sep 1938Box 167 \ 1  img281
Recommendation to sell a pair of obsolete old type P.100 headlamps for £1.16th Sep 1938Box 167 \ 1  img282
Requesting the dispatch of various lamp bulbs to France for testing purposes.21th Jan 1938Box 167 \ 1  img283
Recommendation to sell a pair of obsolete Bosch headlamps to a Mr. C.S. Steadman for £1.25th Oct 1938Box 167 \ 1  img284
Requesting to obtain 4 dozen 48-watt headlamp bulbs for the standard open type headlamp.26th Oct 1938Box 167 \ 1  img285
Request to obtain four glasses for a standard R.R. type Lucas headlamp.8th Nov 1938Box 167 \ 1  img286
Proposal and parts list for mounting an instrument lamp on a Bentley III steering column.8th Nov 1938Box 167 \ 1  img287
Return of incorrectly supplied Lucas headlamp dipping switches.8th Nov 1938Box 167 \ 1  img288
Letter from Joseph Lucas Ltd. to W.A. Robotham confirming a meeting on Wednesday the 23rd.21th Nov 1938Box 167 \ 1  img289
Letter from Joseph Lucas Ltd concerning defective bulbs and voltage regulators.21th Nov 1938Box 167 \ 1  img290
Secret memo detailing price reductions for chassis side lamps and headlamps on P.III, Wraith, and Bentley chassis.24th Nov 1938Box 167 \ 1  img291
Letter from Joseph Lucas Limited regarding a list of suitable bulbs for lamps for an instruction book.25th Nov 1938Box 167 \ 1  img292
List of lamp and bulb types for cars, with part numbers and specifications.28th Nov 1938Box 167 \ 1  img293
Letter from Joseph Lucas Limited discussing high-frequency horns and providing feedback on a test drive of the 'Wraith', noting a clutch shudder.28th Nov 1938Box 167 \ 1  img294
Page 2 of a letter from Joseph Lucas Limited to W.A. Robotham.28th Nov 1938Box 167 \ 1  img295
Letter from Joseph Lucas Limited regarding headlamp terminal readings and clarifying a misunderstanding about regulator unit swamp ratios.29th Nov 1938Box 167 \ 1  img296
Unprotected cables to the side lamps passing through the wings and the need for protection.14th Dec 1938Box 167 \ 1  img297
Visit from Mr. Oliver Lucas to discuss proposals and pricing for headlamps.15th Dec 1938Box 167 \ 1  img298
Cost comparison and specification discussion for vehicle lamp sets.15th Dec 1938Box 167 \ 1  img299
Cost savings and modifications for various vehicle components including lamps, pumps, indicators, and wipers.15th Dec 1938Box 167 \ 1  img300
Pricing, failures, and specifications of various electrical components.15th Dec 1938Box 167 \ 1  img301
Box type rear number plates, ignition distributors, shock dampers, and a dynamo.15th Dec 1938Box 167 \ 1  img302
The testing of HF.728 and WT.13/WT.23 Mellotone horns.19th Dec 1938Box 167 \ 1  img303
Typed message regarding a scheduling conflict for Mr. Kelly, suggesting Thursday as an alternative.19th Dec 1938Box 167 \ 1  img304
Letter from Mead, McLean & Co Ltd regarding the postponement of a visit to test a new headlamp.20th Dec 1938Box 167 \ 1  img305
Internal order memo for electrical components for chassis models 10.B.V and 3.B.50.21th Dec 1938Box 167 \ 1  img306
Letter to O. Lucas regarding the decision not to standardize low-geared steering on the Wraith.22th Dec 1938Box 167 \ 1  img307
Revised design for an instrumental lamp mounting.4th Jan 1939Box 167 \ 1  img308
Letter to Joseph Lucas Ltd. detailing repeated tests of volt-drop in a headlamp circuit.4th Jan 1939Box 167 \ 1  img309
Voltage readings at various tapping points to diagnose a potential bad connection.4th Jan 1939Box 167 \ 1  img310
Scheduling a meeting to discuss the method of anti-dazzle headlamps to be adopted.10th Jan 1939Box 167 \ 1  img311
Comparison of present and proposed anti-dazzle headlamp systems and their test results.10th Jan 1939Box 167 \ 1  img312
Scheduling a meeting to discuss the method of anti-dazzle to be adopted for headlamps.10th Jan 1939Box 167 \ 1  img313
Present and proposed anti-dazzle headlight systems and the results of winter tests.10th Jan 1939Box 167 \ 1  img314
Instructions regarding lamps, horns, and fittings for Bentley Chassis 10.B.V. & 3.B.50.12th Jan 1939Box 167 \ 1  img315
The redesign of headlamps and horns for model B.50.13th Jan 1939Box 167 \ 1  img316
Return of ten incorrect Bentley tail lamps supplied by Messrs. Lucas and arranging for correct replacements.24th Jan 1939Box 167 \ 1  img317
Request for a covering order for a pair of Marchal Headlamps that have already been received.26th Jan 1939Box 167 \ 1  img318
Advertisement sheet for 'Desilux' Marchal 'Dual Purpose' fog and auxiliary lamps.26th Jan 1939Box 167 \ 1  img319
Advertisement for Superphare Marchal 'Strilux' headlamps, detailing models, prices, and features.1st Jan 1935Box 167 \ 1  img320
Advertisement for Marchal anti-glare lamps.1st Jan 1935Box 167 \ 1  img321
Instruction to forward tail lamp brackets and stop/tail lamps for Bentley cars to Messrs. Park Wards.7th Feb 1939Box 167 \ 1  img322


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