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).
Rolls-Royce Experimental Archives                
Choose Archive


Browsing Records        Page 2026 of 2367        Sort by   Box   Date   Description

Filter      from        to             identifier   [all]
DescriptionDateIdentifier
Comparing the appearance of a Mercedes Benz to the 18-EX model.1st Feb 1929Box 166 \ 4  img035
Proposed method for mounting the rear number plate and tail lamp.1st Feb 1929Box 166 \ 4  img036
The supply, return, and finishing of various lamps and a horn for a specific vehicle build.21th Mar 1929Box 166 \ 4  img037
Clarifying confusion over lamps and accessories for experimental cars by listing previous reference memos.29th Apr 1929Box 166 \ 4  img038
Delay in making the instrument board for a Barker Close Coupled Allweather due to a lack of instruments.29th Apr 1929Box 166 \ 4  img039
Surplus lamps, instrument panels, dials, and radiator shutter controls for specific car models.8th May 1929Box 166 \ 4  img040
Providing recommendations for standard lamp bulbs and their specifications.1st Jan 1930Box 166 \ 4  img041
Recommendations for side lamp bulb wattage and analysis of the electrical system's total ampere load.1st Jan 1930Box 166 \ 4  img042
List of recommended standard lamp bulbs for various vehicle applications.8th Jan 1930Box 166 \ 4  img043
Provisional standard specification for Tungsten Filament Electric Lamps for automobiles.1st Aug 1929Box 166 \ 4  img044
Specification sheet for BAS Type Tungsten Filament Electric Lamps with dimensional drawings.1st Aug 1929Box 166 \ 4  img045
Data sheet specifying ratings and characteristics for tungsten filament electric lamps.1st Aug 1929Box 166 \ 4  img046
Specifications and dimensions for a small bayonet cap tungsten filament electric lamp.1st Aug 1929Box 166 \ 4  img047
Provisional standard for Type Tungsten Filament Electric Lamps (Gasfilled and Vacuum), including dimensions for a small bayonet cap holder.1st Aug 1929Box 166 \ 4  img048
Revised wingstays, crossmember, and lamp brackets for the 20/25 HP model.24th Apr 1930Box 166 \ 4  img049
The design and testing of a centre lamp bracket for the 20/25HP model.30th Apr 1930Box 166 \ 4  img050
List of recommended standard lamp bulbs for vehicles.2nd May 1930Box 166 \ 4  img051
Secret memorandum on revised wing stays, cross members, lamp brackets, and wiring for the 20/25 HP chassis.3rd May 1930Box 166 \ 4  img052
Design and supply of stop lamp brackets for various car models.5th May 1930Box 166 \ 4  img053
Request to order specific lamp bulbs from G.E.Co. for P.100 head lamps and side/tail lamps.7th Jun 1930Box 166 \ 4  img054
Letter concerning the approval of a Phantom II type head-lamp bracket fitted to a 20/25 HP chassis.23th Jun 1930Box 166 \ 4  img055
Examination of a car, noting that the Head Lamp Brackets are considered too small and overwhelming for the 20-HP model.24th Jun 1930Box 166 \ 4  img056
Query regarding the release of chassis 14-G4 from experimental work to the Repair Department.25th Jun 1930Box 166 \ 4  img057
Request to obtain lamp bulbs from G.E.Co. for inspection lamps.26th Jun 1930Box 166 \ 4  img058
Extract from a report on tests of completed cars, highlighting unsatisfactory wing stays and headlamps on the 25 HP model.26th Jun 1930Box 166 \ 4  img059
Modifications to the headlamp brackets and wing stays for the 20/25 HP model.26th Jun 1930Box 166 \ 4  img060
New headlamp brackets for the 20/25 HP chassis, requesting a sample pair for approval.3rd Jul 1930Box 166 \ 4  img061
Extract from a report on tests of completed cars, regarding new headlamp brackets for the 'S' series chassis.5th Jul 1930Box 166 \ 4  img062
The inspection and standardisation of headlamp brackets for chassis 14-G4.8th Jul 1930Box 166 \ 4  img063
Internal request to order twelve specific lamp bulbs for side and tail lamps.9th Jul 1930Box 166 \ 4  img064
Supply of various lamps, switches and a wiper for a 20/25 HP Enclosed Limousine.15th Jul 1930Box 166 \ 4  img065
Delay in the supply of lamps and wipers from Lucas for Experimental Car No.18-G4.18th Jul 1930Box 166 \ 4  img066
Non-receipt of lamps from Lucas for car 18-G4 and discussing other received parts.19th Jul 1930Box 166 \ 4  img067
Copy of a memo concerning the dispatch and tracking of lamps and switches for chassis 18-G4.21th Jul 1930Box 166 \ 4  img068
Internal order request for specific lamp bulbs for an instrument lamp and thermometer.4th Aug 1930Box 166 \ 4  img069
On fitting smaller diameter Phantom II type headlamp brackets to a 20/25 HP car.18th Mar 1930Box 166 \ 4  img070
The lamp bulb specifications for car 24-EX and reporting a subsequent dynamo failure.19th Aug 1930Box 166 \ 4  img072
Internal memorandum requesting an order for specific lamp bulbs.29th Aug 1930Box 166 \ 4  img073
Standardisation of headlamp mounting and the use of existing 20/25 HP wing stays.11th Sep 1930Box 166 \ 4  img074
Request to obtain Osram lamp bulbs for side and tail lamps.22th Sep 1930Box 166 \ 4  img075
New Marchel headlamp, requesting it be tested and comparing it to Lucas bulbs.26th Sep 1930Box 166 \ 4  img076
Standardisation of chassis parts, specifically headlamps, stronger wing stays, and lamp brackets to address a 'jellying' issue.30th Jun 1930Box 166 \ 4  img077
Effectiveness of Lucas vs. French Marchel headlamps and a new French law.2nd Oct 1930Box 166 \ 4  img078
Internal memorandum requesting the purchase of various light bulbs for the Experimental Department.27th Oct 1930Box 166 \ 4  img079
Internal request to order specific Osram bulbs.1st Dec 1930Box 166 \ 4  img080
Letter of complaint to General Electric Co. Ltd. regarding faulty 12 volt lamp bulbs.31th Dec 1930Box 166 \ 4  img081
Extract from a 10,000-mile report on vehicle 18-GIV, detailing a headlamp wiring fault.30th Jan 1931Box 166 \ 4  img082
Letter from The General Electric Co. Ltd. responding to a complaint about the voltage of supplied lamps.1st Jan 1931Box 166 \ 4  img084
Issue with 12-volt lamp bulbs and a proposal for their replacement with 14-volt versions.3rd Jan 1931Box 166 \ 4  img085
EFC to Roy requesting an order for Osram lamp bulbs.6th Jan 1931Box 166 \ 4  img086
Differences between 48 and 60 watt bulbs in relation to the dynamo's output and battery charging.7th Jan 1931Box 166 \ 4  img087
Suggesting a change in headlamp bulb wattage from 60W to 48W to manage dynamo output and reduce battery discharge.1st Sep 1931Box 166 \ 4  img088
Confirming S.7214 bulbs are a satisfactory replacement for returned S.7168 bulbs, and requesting a list of Osram lamps from G.E.Co.3rd Jan 1931Box 166 \ 4  img089
The testing of inspection lamp bulbs and a suggestion for a suitable replacement.17th Jan 1941Box 166 \ 4  img090
Standardization and recommended list of chassis lamp bulbs for Phantom II and 20/25 models.9th Jan 1931Box 166 \ 4  img091
List of recommended lamp bulbs for the Phantom II chassis.20th Feb 1931Box 166 \ 4  img092
List of recommended lamp bulbs for the 20/25 chassis.20th Feb 1931Box 166 \ 4  img093
Specification and production status of a medium output dynamo for the 58-GN model.20th Jan 1931Box 166 \ 4  img094
Request to obtain three dozen Osram lamp bulbs following a recommendation to change wattage.20th Jan 1931Box 166 \ 4  img095
Output of a modified dynamo and the standardisation of 48-watt headlamp bulbs.21th Jan 1931Box 166 \ 4  img096
Letter to The General Electric Co. Ltd. regarding issues with under-performing double contact inspection lamp bulbs for experimental cars.22th Jan 1931Box 166 \ 4  img097
Page 2 of a letter to General Electric Co. Ltd. concerning lamp wattage.22th Jan 1931Box 166 \ 4  img098
Letter from The General Electric Co Ltd regarding a sample 12-volt, 9-watt S.B.C Vacuum Side Lamp and pricing.23th Jan 1931Box 166 \ 4  img099
Estimation of lamp load on the L.H. chassis electrical system compared to the P.2. chassis.31th Jan 1931Box 166 \ 4  img100
Note on how candle power varies for metal and carbon filament lamp bulbs based on terminal P.D.2nd Feb 1931Box 166 \ 4  img101
Request to order a small batch of Osram inspection lamp bulbs for further testing.5th Feb 1931Box 166 \ 4  img102
Order for six Osram inspection lamp bulbs for further approval.6th Feb 1931Box 166 \ 4  img103
Note confirming the fitting of 48-watt headlamp bulbs to car CLN60 for a trial.15th Feb 1931Box 166 \ 4  img104
Letter regarding lamp bulb lists for Phantom II and 20/25 chassis and standards for the U.S.A. market.21th Feb 1931Box 166 \ 4  img105
Specification sheet for light bulb dimensions and filaments according to B.E.S.A. standards.16th Mar 1931Box 166 \ 4  img106
Letter from the American branch discussing lamp bulb specifications and headlamp technology.16th Mar 1931Box 166 \ 4  img107
List of specifications for various vehicle lamp bulbs and a discussion on instrument board lamp voltage.4th Apr 1931Box 166 \ 4  img108
Internal request to order various types of Osram lamp bulbs.4th Apr 1931Box 166 \ 4  img109
Return of incorrect gasfilled lamp bulbs and request for the correct vacuum type.20th Apr 1931Box 166 \ 4  img110
Modifications to headlamp brackets and the potential use of a front apron for the 20/25 HP+ 2nd half 'T' Series.20th May 1931Box 166 \ 4  img111
Internal request to order three different types of Osram lamp bulbs.29th Jun 1931Box 166 \ 4  img112
Order for Osram headlamp bulbs to comply with new lighting regulations.6th Jul 1931Box 166 \ 4  img113
Letter to The General Electric Co. Ltd. regarding failures of Osram automobile lamps due to filament breakage.30th Oct 1931Box 166 \ 4  img114
Failed Osram automobile lamp being sent for examination.30th Oct 1931Box 166 \ 4  img115
Letter from General Electric Co Ltd concerning the failure and replacement of a 12 Volt 48 Watt bulb.5th Nov 1931Box 166 \ 4  img116
Introduction of R.170 S.E.D. Lucas headlamps for the 20/25 HP model.13th Nov 1931Box 166 \ 4  img117
Letter from General Electric Co. Ltd. regarding the resolution of a fault with 12 Volt 48 Watt headlamp bulbs.16th Nov 1931Box 166 \ 4  img118
Request to obtain Osram automobile lamp bulbs from the General Electric Co.8th Nov 1931Box 166 \ 4  img119
Works order for the despatch of two 36-watt headlamp bulbs by letter post.20th Nov 1931Box 166 \ 4  img120
Instruction to Despatch Stores to send two 36 watt headlamp bulbs to G.W. Hancock in France at no charge.20th Nov 1931Box 166 \ 4  img121
Acknowledging the safe arrival of a Stephan-Grebel bulb.26th Nov 1931Box 166 \ 4  img122
Modifications and costs related to headlamps and brackets for the 20/25 chassis series.28th Nov 1931Box 166 \ 4  img123
Proposal to use taller headlamp brackets for P.30 lamps on the 40/50 model.28th Nov 1931Box 166 \ 4  img124
Arrangement of taller headlamp brackets for the 20/25 HP model.2nd Dec 1931Box 166 \ 4  img125
The fitting of new Lucas headlamps to the 20/25 HP model.12th Dec 1931Box 166 \ 4  img126
Confirming that new headlamp brackets for the 20/25 HP chassis can be brought into production.14th Dec 1931Box 166 \ 4  img127
Order request for various types of Osram chassis lamp bulbs.1st Jan 1932Box 166 \ 4  img128
Internal order request for two types of lamp bulbs.8th Feb 1932Box 166 \ 4  img129
Request to order various Osram brand chassis electric lamp bulbs.4th Apr 1932Box 166 \ 4  img130
Cover memo forwarding a self-explanatory document regarding side lamp bulbs for comments.11th Apr 1932Box 166 \ 4  img131
Issues with side lamp bulbs blowing on trial cars due to over-voltage.7th Apr 1932Box 166 \ 4  img132
Over-voltage issues causing side lamp bulb filaments to burn out on trials cars.2nd Apr 1932Box 166 \ 4  img133
Issue of side lamp bulbs burning out on trials cars due to high voltage.15th Apr 1932Box 166 \ 4  img134
Voltage for side lamp bulbs and recommending fitting 14 to 16 volt lamps.21th Apr 1932Box 166 \ 4  img135
Internal order request for various Osram automobile lamp bulbs.30th Apr 1932Box 166 \ 4  img136


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙