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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Proposal received from The British Piston Ring Co. Ltd. to produce Piston Rings in Tungum Alloy.18th Nov 1936Box 148 \ 3  scan0175
Letter from The British Piston Ring Co. Ltd. discussing the suitability of Tungum Alloy for aero engine rings.17th Nov 1936Box 148 \ 3  scan0176
The chemical composition and hardness specifications for piston rings and cylinders, comparing American standards with internal ones.19th Nov 1936Box 148 \ 3  scan0177
Technical note on cylinder materials, lubricants, and the performance and design of piston rings under heat.19th Nov 1936Box 148 \ 3  scan0178
Report page detailing tests and conclusions on engine cylinder and piston ring wear, materials, and hardness.19th Nov 1936Box 148 \ 3  scan0179
List of conclusions regarding engine ring and cylinder operation, wear, and testing.13th Nov 1936Box 148 \ 3  scan0180
Letter from The Light Production Co. Ltd. providing specifications and pricing for 'D' type Scraper Rings.13th Nov 1936Box 148 \ 3  scan0181
Request for two sets of modified pistons and a query regarding high-pressure scraper ring wear.20th Nov 1936Box 148 \ 3  scan0182
Requesting an official order be placed for pistons and rings with the Light Production Co. Ltd.20th Nov 1936Box 148 \ 3  scan0183
Letter from The Light Production Co. Ltd. to the Experimental Dept. regarding pistons, scraper rings, and wear.23th Nov 1936Box 148 \ 3  scan0184
Page 2 of a letter from The Light Production Co. Ltd. regarding cylinder material suitability for a type of ring.23th Nov 1936Box 148 \ 3  scan0185
Letter from The Light Production Co. Ltd. regarding a modified piston skirt form for oil control.30th Nov 1936Box 148 \ 3  scan0186
Letter from The Light Production Co. Ltd. discussing piston experiments, oil consumption and scraper rings.1st Dec 1936Box 148 \ 3  scan0187
Letter from The Light Production Co. Ltd. regarding the despatch of piston ring components for a 3 1/4' bore Bentley engine.1st Dec 1936Box 148 \ 3  scan0188
Letter from a supplier confirming the dispatch of 12 urgently required pistons in response to a telegram.8th Dec 1936Box 148 \ 3  scan0189
Urgent telegram requesting early delivery for 12 outstanding pistons.7th Dec 1936Box 148 \ 3  scan0190
Telegram received by telephone regarding the dispatch of twelve pistons.8th Dec 1936Box 148 \ 3  scan0191
Telegram confirming the despatch of twelve pistons against an advice note.8th Dec 1939Box 148 \ 3  scan0192
Request to The British Piston Ring Co. Ltd. for the supply of 20 piston rings to drawing E.61267.9th Dec 1936Box 148 \ 3  scan0193
Order to be placed for 20 F.61267 piston rings.10th Dec 1936Box 148 \ 3  scan0194
Letter from a director of Wellworthy Piston Rings to H. Royce, expressing delight with his new Bentley.17th Dec 1936Box 148 \ 3  scan0195
Micro-examination report and photomicrograph of a Wellworthy piston ring for a Bentley chassis.30th Dec 1936Box 148 \ 3  scan0196
Confirming experiments to be carried out for the tin plating of aluminium pistons at various thicknesses.26th Jan 1937Box 148 \ 3  scan0197
Letter from The Birmingham Aluminium Casting Company regarding the production and supply of Nelson Bohnalite Autothermic Pistons.1st Feb 1937Box 148 \ 3  scan0198
Letter to The Birmingham Aluminium Casting Co. Ltd. regarding Piston Drawing No. E60632.3rd Feb 1937Box 148 \ 3  scan0199
Letter from Birmingham Aluminium Casting Co. Ltd. acknowledging receipt of piston drawing E.60632 and advising a design and price will follow.4th Feb 1937Box 148 \ 3  scan0200
Letter from Birmingham Aluminium Casting Co. Ltd. seeking clarification on a gudgeon pin design for piston drawing E.60632.9th Feb 1937Box 148 \ 3  scan0201
Request to Light Production Co. Ltd. for the supply of 48 Scraper Rings with specific properties.9th Feb 1937Box 148 \ 3  scan0202
Letter to The Birmingham Aluminium Co. Ltd. clarifying the use of a fully floating Gudgeon pin with end pads in a piston design.11th Feb 1937Box 148 \ 3  scan0203
Letter from The Birmingham Aluminium Casting Co Ltd. regarding the design and quote for a gudgeon pin.12th Feb 1937Box 148 \ 3  scan0204
Letter regarding a new design for an Autothermic Piston to replace design E.60632.18th Feb 1937Box 148 \ 3  scan0205
Letter clarifying the ground finish required for 3.5 litre Bentley rings and addressing communication issues with the supplier.19th Feb 1937Box 148 \ 3  scan0206
Quotation from The Birmingham Aluminium Casting Co. for the supply of Autothermic pistons, rings, and gudgeon pins.23th Feb 1937Box 148 \ 3  scan0207
Letter to Birmingham Aluminium Casting Co. Ltd. regarding piston design, costs and a proposed visit.2nd Mar 1937Box 148 \ 3  scan0208
Letter from The Birmingham Aluminium Casting Company regarding Autothermic Pistons and a meeting arrangement.3rd Mar 1937Box 148 \ 3  scan0209
Letter to The Birmingham Aluminium Casting Co. Ltd. arranging a meeting to discuss piston problems.5th Mar 1937Box 148 \ 3  scan0210
Letter from The Birmingham Aluminium Casting Company Ltd. confirming a meeting to discuss a piston proposition.8th Mar 1937Box 148 \ 3  scan0211
Official order for scraper and compression rings for Bentley engines.10th Mar 1937Box 148 \ 3  scan0212
Letter to The Light Production Co. Ltd. requesting the supply of high pressure scraper rings and compression rings for a 4 1/4 litre Bentley.10th Mar 1937Box 148 \ 3  scan0213
Letter from The Birmingham Aluminium Casting Co. Ltd. regarding the production and costing of piston dies.12th Mar 1937Box 148 \ 3  scan0214
Letter from Birmingham Aluminium Casting Co. Ltd. regarding the dispatch of a 'Cylinder Bore Wear' book and a Technical Data Book.12th Mar 1937Box 148 \ 3  scan0215
Official order for experimental pistons from the Birmingham Aluminium Casting Co Ltd.15th Mar 1937Box 148 \ 3  scan0216
Letter to The Birmingham Aluminium Casting Co. Ltd. confirming an order for experimental pistons.16th Mar 1937Box 148 \ 3  scan0217
Letter from The Birmingham Aluminium Casting Co. Ltd. confirming the production of experimental pistons.17th Mar 1937Box 148 \ 3  scan0218
Supply, pricing, and alloy specifications for experimental Autothermic pistons.19th Mar 1937Box 148 \ 3  scan0219
Letter to Messrs. Hepworth & Grandage Ltd. to arrange a meeting to discuss piston rings and cylinder liners.16th Apr 1937Box 148 \ 3  scan0220
Letter confirming an appointment at Hepworth & Grandage Ltd's works.20th Apr 1937Box 148 \ 3  scan0221
Letter to a supplier enclosing piston ring drawings and requesting cost and material specifications.26th Apr 1937Box 148 \ 3  scan0222
Letter to the Birmingham Aluminium Casting Co., Ltd. regarding the delivery and design of Autothermic Pistons.15th May 1937Box 148 \ 3  scan0223
Telegram received by telephone regarding the availability of test pistons.24th May 1937Box 148 \ 3  scan0224
Telegram to Birmal in Smethwick chasing up the development of pistons.24th May 1937Box 148 \ 3  scan0225
Letter from Birmingham Aluminium Casting Co. Ltd. regarding a delay in the development and supply of pistons.24th May 1937Box 148 \ 3  scan0226
Letter to C.H. Brooks of The Light Production Co., Ltd. regarding serious piston failures on a customer's car and a Bentley.28th May 1937Box 148 \ 3  scan0227
Letter from The Light Production Co. Ltd. arranging a meeting to discuss a piston failure on a customer's car.29th May 1937Box 148 \ 3  scan0228
Letter to The Light Production Co. Ltd. discussing piston clearances and temperature calculations for a new set of pistons.5th Jun 1937Box 148 \ 3  scan0229
Official order for a set of 4 1/2 litre Bentley pistons from Light Production Co. Ltd.5th Jun 1937Box 148 \ 3  scan0230
Letter from The Light Production Co. Ltd. discussing piston and gudgeon pin clearances.8th Jun 1937Box 148 \ 3  scan0231
Letter from The Light Production Co. Ltd. regarding connecting-rod pressure markings and potential piston failures.8th Jun 1937Box 148 \ 3  scan0232
The dispatch of engine components for a Bentley 4¼ litre engine, including a cylinder block, pistons, and various rings.7th Jun 1937Box 148 \ 3  scan0233
Letter from a supplier regarding delays in producing experimental Autothermic Pistons due to a defective casting.7th Jun 1937Box 148 \ 3  scan0234
1937 summer meeting visit to German engineering factories, detailing observations and restrictions encountered.21th Jun 1937Box 148 \ 3  scan0235
Observations on Opel's manufacturing processes, integral body construction, and 2-litre 6-cylinder engine design.21th Jun 1937Box 148 \ 3  scan0236
Technical report on Opel cylinder heads and a visit to Elektronmetall to observe piston technology.21th Jun 1937Box 148 \ 3  scan0237
Report page detailing piston manufacturing, testing, and laboratory equipment at Elektronmetall, and a brief note on a visit to Robert Bosch A.G.21th Jun 1937Box 148 \ 3  scan0238
Daimler-Benz vehicle technology, including frame construction, engine design, and a review of a V-12 supercharged engine.21th Jun 1937Box 148 \ 3  scan0239
Technical note on Daimler-Benz and Gasmotorenfabrik Deutz engines.21th Jun 1937Box 148 \ 3  scan0240
Blueprint showing a cross-section and inverted plan of a cylinder head for a new 2-litre Opel engine.21th Jun 1937Box 148 \ 3  scan0241
Diagram showing oil drillings in an aero piston from Elektronmetall G.M.B.H., Canstatt.21th Jun 1937Box 148 \ 3  scan0242
Sketch of an Opel rear main bearing cap, showing plan and section views.24th Jun 1937Box 148 \ 3  scan0243
Letter from a supplier regarding the manufacture and delivery of experimental autothermatic pistons.24th Jun 1937Box 148 \ 3  scan0244
Copy document from Hepworth & Grandage detailing the chemical composition of suggested ring materials for testing.30th Apr 1937Box 148 \ 3  scan0245
Request to despatch 14 pistons to The Light Production Co. Ltd. for machining.6th Jul 1937Box 148 \ 3  scan0246
Requesting an official order for machining 14 pistons for Bentley.6th Jul 1937Box 148 \ 3  scan0247
Letter to The Light Production Co. Ltd. regarding the despatch and modification of pistons.6th Jul 1937Box 148 \ 3  scan0248
Returning compression and scraper rings to the supplier, Hepworth & Grandage Ltd., for sorting due to missing identification marks.8th Jul 1937Box 148 \ 3  scan0249
Letter to a supplier returning unidentified rings for sorting and discussing a new gauge for measuring ring periphery.8th Jul 1937Box 148 \ 3  scan0250
Request to Penn Birmal Smethwick for six spare scraper rings for Autothermic pistons.3rd Aug 1937Box 148 \ 3  scan0251
Requesting an official order be placed for 6 scraper rings for Autothermic pistons for the Wraith Chassis.5th Aug 1937Box 148 \ 3  scan0252
Letter to Hepworth & Grandage Ltd. regarding a mix-up with engine rings and a request for analysis and identification markings.9th Aug 1937Box 148 \ 3  scan0253
Letter requesting the urgent supply of 50 compression rings for a 3½ litre Bentley engine.23th Aug 1937Box 148 \ 3  scan0254
Instruction to place an official order for 50 Bentley compression rings with specifications.23th Aug 1937Box 148 \ 3  scan0255
Letter from The Light Production Co. Ltd. regarding the manufacture of fifty Compression Rings.25th Aug 1937Box 148 \ 3  scan0256
Letter from The Light Production Co. Ltd. confirming a delivery schedule.25th Aug 1937Box 148 \ 3  scan0257
Letter to Hepworth & Grandage Ltd. regarding an analysis of rings and placing a new order for compression rings.30th Aug 1937Box 148 \ 3  scan0258
Request to place an order for Bentley piston rings with Hepworth and Grandage Ltd.30th Aug 1937Box 148 \ 3  scan0259
Letter to Birmingham Aluminium Casting Co. Ltd. regarding preliminary tests on Autothermic Pistons and arranging a follow-up meeting.1st Sep 1937Box 148 \ 3  scan0260
Urgent request for high pressure Bentley compression rings from Light Production Co. Ltd.3rd Sep 1937Box 148 \ 3  scan0261
Telegram received by telephone confirming the dispatch of high pressure rings.6th Sep 1937Box 148 \ 3  scan0262
Letter to Messrs. Hepworth & Grandage Ltd. regarding a discrepancy in wall pressure calculations for a valve ring.8th Sep 1937Box 148 \ 3  scan0263
Letter to The Birmingham Aluminium Casting Co. Ltd. to arrange a meeting to discuss pistons.10th Sep 1937Box 148 \ 3  scan0264
Letter from The Birmingham Aluminium Casting Co Ltd to arrange a meeting on the upcoming Thursday.11th Sep 1937Box 148 \ 3  scan0265
Letter to The Birmingham Aluminium Casting Co. Ltd. confirming a meeting.14th Sep 1937Box 148 \ 3  scan0266
Telegram confirming the dispatch of high pressure rings to the Experimental Department.6th Sep 1937Box 148 \ 3  scan0267
Requesting an official order for 144 rings from Light Production Co. Ltd for six Wraith cars in production.6th Oct 1937Box 148 \ 3  scan0268
Letter to Light Production Co. Ltd. requesting the supply of 144 rings with specific modifications for a Bentley engine.6th Oct 1937Box 148 \ 3  scan0269
Letter from The Light Production Co. Ltd. regarding the manufacture of 144 piston rings to Drawing No.E.W.1425.8th Oct 1937Box 148 \ 3  scan0270
Letter accepting an invitation to lunch and to visit a stand at a show.11th Oct 1937Box 148 \ 3  scan0271
Request to despatch six aerolite pistons to Light Production Co. Ltd. for attention.15th Oct 1937Box 148 \ 3  scan0272
Request for an official order to be sent to Light Production Co. Ltd. for the tin plating of six Aerolite Pistons for use on a Bentley chassis.15th Oct 1937Box 148 \ 3  scan0273
Letter to Light Production Co. Ltd. regarding the despatch of six pistons for tin plating.15th Oct 1937Box 148 \ 3  scan0274


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