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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DescriptionDateIdentifier
Blueprint showing the contour of a Woodhead special spring main leaf under torsion and load.10th Aug 1926Box 42 \ 3  Scan201
Blank document with a 'Print Room, Derby' receiving stamp.10th Aug 1926Box 42 \ 3  Scan202
Graph plotting the results of torsion tests on various front springs, showing angle of rotation against torque.10th Aug 1926Box 42 \ 3  Scan203
The reverse side of a document or photograph with a Print Room receipt stamp.10th Aug 1926Box 42 \ 3  Scan204
Comparing reversed and rebound leaf springs fitted to Lancia and Bentley vehicles.10th Aug 1926Box 42 \ 3  Scan205
Graph showing the relationship between deflection and total spring load for Lancia reversed leaf springs.10th Aug 1926Box 42 \ 3  Scan206
Blank document page featuring a red ink date stamp from the Derby office.10th Aug 1926Box 42 \ 3  Scan207
Performance graph showing the compression versus load for a Woodhead Special Spring D.10th Aug 1926Box 42 \ 3  Scan208
Severely faded document with a red rectangular received stamp.10th Aug 1926Box 42 \ 3  Scan209
Design of riveted-on road spring clips for the 40/50 and 20 HP models.3rd May 1927Box 42 \ 3  Scan210
Design, testing, and production of riveted spring clips.6th May 1927Box 42 \ 3  Scan211
Test results and proposed modifications for a rebound leaf spring.13th May 1927Box 42 \ 3  Scan212
The testing of special Woodhead front springs with rubber pads, including bumper test results and weight comparisons.24th Jul 1928Box 42 \ 3  Scan213
Spring durability, manufacturing methods, and solutions for squeaking.24th Jul 1928Box 42 \ 3  Scan214
Blueprint of a 'Woodhead Special' leaf spring detailing break locations and rubber inserts.26th Jul 1928Box 42 \ 3  Scan215
Blank document page with a Print Room stamp.26th Jul 1928Box 42 \ 3  Scan216
Letter from Jonas Woodhead & Sons Ltd. regarding the testing of special laminated springs.16th Aug 1928Box 42 \ 3  Scan217
Letter to J. Woodhead & Sons Ltd. regarding spring deflection and rebound testing.20th Aug 1928Box 42 \ 3  Scan218
Letter from Jonas Woodhead & Sons Ltd. regarding test results for springs with rubber inserts.21th Aug 1928Box 42 \ 3  Scan219
Design of road springs, including plate ends, clips, and types like cantilever and semi-elliptic.2nd Oct 1928Box 42 \ 3  Scan220
Proposal to return to the Woodhead clip for road springs and an associated design issue.10th Oct 1928Box 42 \ 3  Scan221
Receipt of sample 20 HP low rating type Axle Springs from Jonas Woodhead & Sons for testing.12th Aug 1932Box 42 \ 3  Scan222
Letter to Jonas Woodhead & Sons regarding the testing of their road springs and issues with lubricant.5th Nov 1932Box 42 \ 3  Scan223
Test report comparing Woodhead low rating road springs against standard Firths springs on a 25HP bumper chassis.5th Nov 1932Box 42 \ 3  Scan224
Lubricant issues with rear springs and plans for testing new Woodhead springs.5th Nov 1932Box 42 \ 3  Scan225
Letter from Jonas Woodhead & Sons about a new design for spring plate ends to aid lubrication and prevent squeaking.7th Nov 1932Box 42 \ 3  Scan226
Design and manufacturing specifications for experimental Woodhead springs.7th Nov 1932Box 42 \ 3  Scan227
Request to order a set of 4 low rating Peregrine road springs from Messrs Woodhead.28th Dec 1932Box 42 \ 3  Scan228
Complaints that Dermatine washers are inferior and a proposal to test a thicker version.25th Aug 1919Box 42 \ 4  Scan001
Notice concerning the standardization of thicker Dermative washers for the chassis.30th Mar 1920Box 42 \ 4  Scan002
Issues with current spring washers and proposing a new standardised design.20th Oct 1920Box 42 \ 4  Scan003
Request for a set of sample washers to be sent to Mr. Royce for inspection.20th Oct 1920Box 42 \ 4  Scan004
Failure of 2.BA Grover spring washers and seeking comments on potential solutions.15th Dec 1920Box 42 \ 4  Scan005
Standardization of spring washers and the removal of certain standard nut sizes.1st Jun 1922Box 42 \ 4  Scan006
Approval and testing of spring washer samples from Messrs. C. R. Smithson & Co.29th Jun 1922Box 42 \ 4  Scan007
Letter regarding the dispatch of sample spring washers for testing and standardization.14th Jul 1922Box 42 \ 4  Scan008
Ackermite Pivot Washers and the forwarding of contemplated alterations.10th Aug 1923Box 42 \ 4  Scan009
Letter discussing the use and performance of a material named Ackermite for pivot washers.28th Jul 1925Box 42 \ 4  Scan010
Replacement of fibre washers with aluminium washers.3rd Mar 1926Box 42 \ 4  Scan011
Use of aluminium washers in place of fibre washers for drain pipe unions.8th Mar 1926Box 42 \ 4  Scan012
Servo jaggers and the use of a rubber washer from the Phantom model on the 20HP model, suggesting a more permanent steel version.22th Apr 1926Box 42 \ 4  Scan013
Requesting an urgent experimental trial of petrol-proof rubber washers for a 20-HP chassis petrol tank.3rd May 1926Box 42 \ 4  Scan014
Quotation from The Avon India Rubber Co. Ltd. for the supply of washers.27th Apr 1926Box 42 \ 4  Scan015
Recommendation to replace cork washers with rubber washers for the petrol level indicator.1st Jul 1926Box 42 \ 4  Scan016
Replacement of fibre washers with aluminium washers, specifically for hydraulic shock dampers.23th Dec 1926Box 42 \ 4  Scan017
Order for Ferobestos clutch washers for an experimental 20 HP starter motor.31th Oct 1927Box 42 \ 4  Scan018
Request to order two cork washers with specified dimensions for the Phantom slipper wheel.8th Jun 1928Box 42 \ 4  Scan019
Requesting an increase in the area and hardness of washers for a centralised lubrication system.1st Aug 1928Box 42 \ 4  Scan020
Trouble with aluminium washers in the centralized lubrication system causing oil leaks.14th Jul 1928Box 42 \ 4  Scan021
Explaining the correct application and function of double tab locking washers on chassis and aero engines.7th Sep 1928Box 42 \ 4  Scan022
Design and material of locking washers for propeller boss bolt nuts.12th Sep 1928Box 42 \ 4  Scan023
Correcting the word 'ineffective' to 'effective' in a previous communication about tab locking washers.13th Sep 1928Box 42 \ 4  Scan024
Recommending modifications to the R engine's oil base fastening and standardizing the use of grover washers for aero work.6th Jul 1929Box 42 \ 4  Scan025
Request for the production of eighteen mild steel (M.S.) washers with specified dimensions.13th Aug 1929Box 42 \ 4  Scan026
Cover letter for an attached document from R.D.E.2.b. concerning the fitting of restriction washers in aircraft.30th Nov 1929Box 42 \ 4  Scan027
Letter from the Air Ministry agreeing to fit restriction washers to 'F' type engines in specific aircraft.20th Nov 1929Box 42 \ 4  Scan028
Report from the Marine Aircraft Experimental Establishment on the unsuitability of soft aluminium sparking plug washers.1st Dec 1931Box 42 \ 4  Scan029
The corrosion tests of sparking plugs and the use of solid aluminium washers.1st Dec 1931Box 42 \ 4  Scan030
Two photographs, Figures 1 and 2, showing different types of metal washers or rings.9th Dec 1931Box 42 \ 4  Scan031
Photographic record of aluminium sparking plug washers.9th Dec 1931Box 42 \ 4  Scan032
Further tests of solid type aluminium sparking plug washers from the Marine Aircraft Experimental Establishment in Felixstowe.1st Apr 1933Box 42 \ 4  Scan033
Page two of a Felixstowe report comparing the performance of aluminium and copper/asbestos washers on engines.1st Apr 1933Box 42 \ 4  Scan034
Test report table detailing the performance and condition of plugs in various aircraft and marine engines.27th Apr 1927Box 42 \ 4  Scan035
Photograph showing two metal washers or grommets.27th Apr 1927Box 42 \ 4  Scan036
Photographic report cover sheet regarding aluminium sparking plug washers.12th Apr 1933Box 42 \ 4  Scan037
Standardisation of parts report for a Vellumoid Rocker Cover Washer.20th Dec 1933Box 42 \ 4  Scan038
Modifications to the Phantom cylinder head, comparing different combustion head designs and engine types.6th Mar 1926Box 42 \ 4  Scan039
Engine combustion turbulence, comparing various cylinder head, piston, and valve designs.6th Mar 1926Box 42 \ 4  Scan040
Continued discussion on engine design, focusing on cam grinding, turbulence, and cylinder head configurations.1st May 1926Box 42 \ 4  Scan041
Response to a complaint about a Phantom engine firing after being switched off, comparing it to the 40/50 HP Silver Ghost.1st May 1926Box 42 \ 4  Scan042
Letter from the University of Bristol's Department of Automobile Engineering asking for information on engine detonation and anti-knock agents.3rd Sep 1926Box 42 \ 4  Scan043
Page 2 of a letter to E. W. Hives asking about the effect of engine size on detonation.21th Sep 1926Box 42 \ 4  Scan044
Letter to Professor W. Morgan of the University of Bristol regarding enquiries on engine detonation.21th Sep 1926Box 42 \ 4  Scan045
Engine detonation concerning compression ratios, fuel mixtures, and ignition.21th Sep 1926Box 42 \ 4  Scan046
Analysis of engine detonation related to ignition timing, number of plugs, and cylinder bore size.22th Sep 1926Box 42 \ 4  Scan047
Letter from the University of Bristol's Department of Automobile Engineering regarding research into detonation.22th Sep 1926Box 42 \ 4  Scan048
Confirming a suggestion to use a single lip on a turbulent Phantom cylinder head for better flow.28th Oct 1926Box 42 \ 4  Scan049
Test report on different 'turbulent' type cylinder heads for the lighter Phantom engine to address detonation issues.10th Dec 1926Box 42 \ 4  Scan050
Report page discussing engine detonation, turbulence, and ignition tests comparing an original aluminium head with an alternative head on a Phantom engine.10th Dec 1926Box 42 \ 4  Scan051
Increasing Mean Effective Pressure (MEP) by testing a new engine head, detailing compression ratios, detonation, and ignition characteristics.10th Dec 1926Box 42 \ 4  Scan052
Report page detailing engine timing, detonation reduction, and self-ignition tests.10th Dec 1926Box 42 \ 4  Scan053
Engine self-ignition tendencies and experiments conducted with smaller valves.10th Dec 1926Box 42 \ 4  Scan054
Summary of test results on the lighter Phantom engine, comparing power output, ignition, and detonation with different valve sizes.10th Dec 1926Box 42 \ 4  Scan055
Preparations for road and bench tests on three different types of cylinder heads.10th Dec 1926Box 42 \ 4  Scan056
Graph showing Ignition Advance versus Brake Mean Effective Pressure (B.M.E.P.) curves at 1000 RPM.11th Dec 1920Box 42 \ 4  Scan057
The reverse of a document showing a 'Print Room' stamp from Derby.11th Dec 1920Box 42 \ 4  Scan058
Graph of ignition advance curves for various Phantom engine configurations.2nd Dec 1924Box 42 \ 4  Scan059
Graph comparing power output (BHP and BMEP) for an Aluminium Phantom engine with large versus small diameter valves.6th Jun 1924Box 42 \ 4  Scan060
Ignition Advance/B.M.E.P. curves for an Aluminium Phantom engine at 1000 RPM.11th Dec 1926Box 42 \ 4  Scan061
The reverse of a document with a red ink stamp from the Printing Room.11th Dec 1926Box 42 \ 4  Scan062
Blueprint for smaller diameter inlet and exhaust valves for a Lighter Phantom Engine.27th Nov 1926Box 42 \ 4  Scan063
Heavily faded and almost entirely illegible typed document with a red ink stamp in the bottom right corner.11th Dec 1936Box 42 \ 4  Scan064
Lightening the Phantom engine's waterpipe, flywheel and clutch, and improving the induction system.1st Feb 1927Box 42 \ 4  Scan065
Ricardo's remarks on engine roughness caused by high compression and the challenges of altering combustion chamber design.24th Feb 1927Box 42 \ 4  Scan066
Piston designs and compression ratios for F engines.24th Jun 1927Box 42 \ 4  Scan067
Performance of turbulent cylinder heads and low-speed acceleration, particularly in the Peregrine engine.3rd Oct 1932Box 42 \ 4  Scan068
Three graphs comparing the BMEP vs RPM of 'Japan I' and 'Peregrine' engines, with and without detonation, using Shell Mex fuel.20th Aug 1919Box 42 \ 4  Scan069
Suggestion for a side petrol filler to address difficulties when a luggage carrier is in use.20th Aug 1919Box 42 \ 4  Scan070
Design and positioning of a petrol gauge and filler in relation to a luggage carrier.28th Jan 1920Box 42 \ 4  Scan071
Extract discussing a modification to the carburettor's flat feed chamber to incorporate a filter for a new back tank.28th Jan 1920Box 42 \ 4  Scan072


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