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
Clarifying the standardized sparking plugs for the Phantom model versus other HP models.16th Sep 1932Box 162 \ 6  img180
Letter from Lodge Plugs Limited regarding a modification to their A15 sparking plug to resolve an electrical breakdown issue.21th Sep 1932Box 162 \ 6  img181
Letter from Lodge Plugs Limited regarding the dispatch and conversion of spark plugs against Order No. 27509.21th Sep 1932Box 162 \ 6  img182
Standardisation of Lodge HD.3 spark plugs for 5.0 & 5.25 compression ratio engines to prevent pre-ignition.12th Aug 1932Box 162 \ 6  img183
Standardisation of Lodge spark plugs type H.R.3 & C.S.2 for a specific compression ratio.12th Aug 1932Box 162 \ 6  img184
Letter from Lodge Plugs Limited regarding an order for twenty-four Model HD15 plugs.25th Oct 1932Box 162 \ 6  img185
Order for 24 Lodge spark plugs.26th Oct 1932Box 162 \ 6  img186
Letter to Lodge Plugs Ltd. detailing engine testing results and feedback on their spark plugs.21th Nov 1932Box 162 \ 6  img187
Letter to Messrs. Lodge Plugs Ltd. regarding a warning about spark plug fouling.24th Nov 1932Box 162 \ 6  img188
Letter from Lodge Plugs Limited regarding the production of sample spark plugs with specific features.24th Nov 1932Box 162 \ 6  img189
Letter from Lodge Plugs Limited regarding an experimental HD15 plug with stepped mica.2nd Dec 1932Box 162 \ 6  img190
Letter from Lodge Plugs Ltd. regarding the dispatch of experimental Model X317 spark plugs for testing.2nd Dec 1932Box 162 \ 6  img191
Letter from Lodge Plugs Limited regarding specially designed spark plugs for a supercharged engine.3rd Dec 1932Box 162 \ 6  img192
Internal request to the Order Office to purchase 2 dozen X.318 14 mm sparking plugs from Lodge Plug Co.19th Jan 1933Box 162 \ 6  img193
Letter from Lodge Plugs arranging a meeting to discuss modifications to the X318 due to a burning trouble.21th Feb 1933Box 162 \ 6  img194
Letter from Lodge Plugs Limited regarding the supply of various spark plugs for testing purposes.3rd Mar 1933Box 162 \ 6  img195
Letter to Lodge Plugs Ltd. requesting plug gauges for testing new chassis plugs.8th Mar 1933Box 162 \ 6  img196
Letter from Lodge Plugs Limited regarding the supply of wire type gap gauges.9th Mar 1933Box 162 \ 6  img197
Order for 2 dozen 14mm plugs type X.306 for the Bensport.13th Mar 1933Box 162 \ 6  img198
Letter from Lodge Plugs Limited regarding the supply of alternative wire type gap gauges.17th Mar 1933Box 162 \ 6  img199
Letter from Lodge Plugs Limited confirming the despatch of sample Model X335 and X339 plugs.20th Mar 1933Box 162 \ 6  img200
Letter from Lodge Plugs Limited regarding the testing of spark plug model X.336.20th Mar 1933Box 162 \ 6  img201
Requesting the return of Lodge sparking plugs and radio screening caps to the manufacturer for modification.20th Mar 1933Box 162 \ 6  img202
Requesting the despatch of an experimental Lodge sparking plug type X.336 to Lodge Plugs Ltd.21th Mar 1933Box 162 \ 6  img203
Letter from Lodge Plugs Limited regarding the supply of 14 m/m plugs type X339 for testing.28th Mar 1933Box 162 \ 6  img204
Invoice from Lodge Plugs Limited for six X339 sparking plugs provided free of charge.28th Mar 1933Box 162 \ 6  img205
Letter from Lodge Plugs Limited confirming an appointment for Mr. Alec Lodge's visit.6th Apr 1933Box 162 \ 6  img206
Letter from Lodge Plugs Limited regarding the testing of 14m/m car plugs, model X339.13th Apr 1933Box 162 \ 6  img207
Letter to Lodge Plugs Ltd regarding the performance and testing of X.339 plugs after 5000 miles.20th Apr 1933Box 162 \ 6  img208
To order 2 dozen X.339 plugs from Lodge Plugs Ltd for Bentley cars.20th Apr 1933Box 162 \ 6  img209
Follow-up memo requesting an order for one dozen X.339 plugs with low voltage terminals from Lodge Plug Co.24th Apr 1933Box 162 \ 6  img210
Letter from Lodge Plugs Limited concerning the supply of 18 m/m and 14 m/m spark plugs for 25 HP and Bentley engines.26th Apr 1933Box 162 \ 6  img211
Letter to Lodge Plugs Limited regarding a discrepancy in a supply of HC.3 plugs and amending an order for 14mm plugs.29th Apr 1933Box 162 \ 6  img212
Letter from Lodge Plugs Limited regarding suitable spark plugs for a 25 HP car.2nd May 1933Box 162 \ 6  img213
Letter from Lodge Plugs Limited regarding sending new Sintox plugs for testing.15th Jul 1938Box 162 \ 6  img214
Letter from Lodge Plugs regarding the supply of Model HD3 and HC3 spark plugs for testing on a 25 HP car.4th May 1933Box 162 \ 6  img215
Letter from Lodge Plugs Limited regarding an order alteration for spark plugs.8th May 1933Box 162 \ 6  img216
Sparking plug performances on the Peregrine engine during road tests.15th May 1933Box 162 \ 6  img217
Test report on engine performance and idling with different spark plugs and tappet settings.26th Jun 1933Box 162 \ 6  img218
Internal order request for two dozen X.335 14mm sparking plugs from Lodge Plugs Ltd.26th Jun 1933Box 162 \ 6  img219
To the Order Office requesting an urgent purchase of two dozen X.335 14 mm. sparking plugs from Lodge Plugs Ltd.26th Jun 1933Box 162 \ 6  img220
Letter to Lodge Plugs Ltd. placing an urgent order for X.335 sparking plugs for a Bentley car.26th Jun 1933Box 162 \ 6  img221
Letter from Lodge Plugs Limited acknowledging receipt of a letter and an order for two dozen type X335 plugs.29th Jun 1933Box 162 \ 6  img222
Letter from Lodge Plugs inquiring about the results of tests on their model X335 plug in a Bentley car.21th Jul 1933Box 162 \ 6  img223
Letter to Lodge Plugs Ltd. regarding the testing of X.335 plugs.22th Jul 1933Box 162 \ 6  img224
Internal order request for spark plugs from Lodge Plugs Ld. and K.L.G. Co.9th Aug 1933Box 162 \ 6  img225
Letter to Lodge Plugs Ltd. regarding trouble with K335 plugs when using Ethyl petrol.22th Aug 1933Box 162 \ 6  img226
Follow-up letter from Lodge Plugs Limited requesting a performance report on X335 plugs.23th Aug 1933Box 162 \ 6  img227
Letter from Lodge Plugs Limited acknowledging an inquiry regarding the performance of the X535 Plug.24th Aug 1933Box 162 \ 6  img228
Sending failed 4.14 mm Lodge sparking plugs back to the manufacturer for examination.28th Aug 1933Box 162 \ 6  img229
Letter from Lodge Plugs Limited regarding the inspection of four type X335 plugs and suggesting a closer gap setting.8th Sep 1933Box 162 \ 6  img230
Letter to Lodge Plugs Limited concerning the testing of X.335 plugs and their performance without Ethyl fuel.20th Sep 1933Box 162 \ 6  img231
Letter from Lodge Plugs Ltd. regarding the testing of a returned Model X335 spark plug.28th Sep 1933Box 162 \ 6  img232
Letter from Lodge Plugs Limited regarding the supply of modified Bentley spark plugs with flush copper electrodes.6th Nov 1933Box 162 \ 6  img233
Letter to Lodge Plugs Limited acknowledging their letter and promising an opinion on their plugs.7th Nov 1933Box 162 \ 6  img234
Letter to Lodge Plugs Ltd. requesting further sets of spark plugs for testing on Bentley cars.29th Nov 1933Box 162 \ 6  img235
Letter from Lodge Plugs Limited regarding the supply of X365 and X366 spark plugs for testing in a Bentley car.30th Nov 1933Box 162 \ 6  img236
Letter from Lodge Plugs Limited confirming they are sending six experimental plugs, number X371, for testing on a Bentley chassis.3rd Jan 1934Box 162 \ 6  img237
Letter to Lodge Plugs Ltd. reporting a failed X434/1 sparking plug during a test on a Bentley chassis.8th Jan 1934Box 162 \ 6  img238
Letter from Lodge Plugs Limited comparing two models of spark plugs, HC3 and HD3, for Phantom cars.15th Feb 1934Box 162 \ 6  img239
Letter from Lodge Plugs Ltd. regarding designing a plug for a Phantom car.15th Feb 1934Box 162 \ 6  img240
Letter to Lodge Plugs Ltd. regarding the failure of their X.371 sparking plugs during testing in a Bentley Car.16th Feb 1934Box 162 \ 6  img241
The testing and return of Lodge X371 sparking plugs for a Bentley chassis.16th Feb 1934Box 162 \ 6  img242
Letter to Lodge Plugs Ltd. requesting 14 m.m. plugs for an experimental trial in a special Phantom II engine.22th Feb 1934Box 162 \ 6  img243
Letter from Lodge Plugs Ltd regarding the design and supply of 14mm spark plugs for testing on the Phantom II engine.23th Feb 1934Box 162 \ 6  img244
Letter from Lodge Plugs Limited requesting an update on tests for a 14 m.m. plug, type X389, on a special Phantom II engine.8th Mar 1934Box 162 \ 6  img245
Urgent order request for 18 type X389 14mm Lodge sparking plugs for a 10,000 miles test chassis.19th Mar 1934Box 162 \ 6  img246
Letter from Lodge Plugs Limited chasing a report on 14 m.m. spark plugs sent for trial on a Special Phantom II engine.4th Jun 1934Box 162 \ 6  img247
The urgent purchase of Lodge sparking plugs for a special Bentley high power engine.6th Jun 1934Box 162 \ 6  img248
Complaint of misfiring from a set of sparking plugs returned from Bentley chassis B.29-AE.19th Jul 1934Box 162 \ 6  img249
Return of 6 X401 sparking plugs for examination.21th Jul 1934Box 162 \ 6  img250
Letter to Lodge Plugs Ltd. detailing issues with their K401 plugs running too hot during a Bentley chassis trial.21th Jul 1934Box 162 \ 6  img251
Letter from Lodge Plugs Ltd. regarding test results of X401 plugs for a Bentley Chassis.24th Jul 1934Box 162 \ 6  img252
The testing of sparking plugs removed from Bentley chassis B29-AE.24th Jul 1934Box 162 \ 6  img253
Letter from Lodge Plugs Limited regarding the road testing of their Model X401 plugs on a 3 1/2 litre Bentley.25th Jun 1934Box 162 \ 6  img254
Internal memorandum requesting an order for 'Spectre' sparking plugs from the Lodge Co.1st Aug 1934Box 162 \ 6  img255
Letter to Lodge Plugs Ltd. regarding the development of a 14 mm plug for a Phantom II chassis.7th Aug 1934Box 162 \ 6  img256
Letter from Lodge Plugs Limited confirming they are investigating plugs with radio suppressor resistances.8th Aug 1934Box 162 \ 6  img257
Order of one gross of copper gland washers for X.170 sparking plugs.8th Aug 1934Box 162 \ 6  img258
Order for sparking plugs from Messrs. Lodge Plugs Limited, noting a change in delivery number.21th Aug 1934Box 162 \ 6  img259
Misfiring sparking plugs returned from specific Bentley chassis.29th Aug 1934Box 162 \ 6  img260
Failure of Lodge and K.L.G. sparking plugs on a Bentley chassis.5th Sep 1934Box 162 \ 6  img261
Letter from Lodge Plugs Limited regarding sending sample spark plugs for testing on a Bentley engine.17th Sep 1934Box 162 \ 6  img262
Letter to Lodge Plugs Ltd. arranging a meeting to discuss sparking plugs for the Bentley chassis.21th Sep 1934Box 162 \ 6  img263
Letter from Lodge Plugs Limited arranging a meeting to discuss spark plugs for a Bentley chassis.24th Sep 1934Box 162 \ 6  img264
Letter from Lodge Plugs Limited regarding the sending of six used K.L.G. 765A plugs from a Bentley.25th Oct 1934Box 162 \ 6  img265
Letter from Lodge Plugs Ltd. regarding the supply of specially developed Model X434 plugs for a Bentley car.25th Oct 1934Box 162 \ 6  img266
Invoice from Lodge Plugs Limited for 12 X434 spark plugs for a Bentley car.25th Oct 1934Box 162 \ 6  img267
Letter from Lodge Plugs Ltd. regarding the supply and modification of pins for Model X434 Bentley plugs.29th Oct 1934Box 162 \ 6  img268
Follow-up letter from Lodge Plugs Limited regarding the progress of nine model X434 pins sent for stelliting.14th Nov 1934Box 162 \ 6  img269
Request to dispatch eight stellited model X434 pins to Messrs. Lodge Plugs Ltd for spark plug assembly.19th Nov 1934Box 162 \ 6  img270
Letter to Lodge Plugs Ltd. regarding the return of stellited pins.19th Nov 1934Box 162 \ 6  img271
Letter from Lodge Plugs Limited acknowledging receipt of X434 stellited pins to be made into plugs for testing.21th Nov 1934Box 162 \ 6  img272
Fitting Lodge X434/1 stellited and non-stellited spark plugs to a Bentley for a comparative test.29th Dec 1934Box 162 \ 6  img273
Instruction to return a Lodge type X434/1 sparking plug for examination.8th Jan 1935Box 162 \ 6  img274
Six Lodge X434/1 sparking plugs to be returned to Lodge Plugs Ltd for examination.16th Jan 1935Box 162 \ 6  img275
Letter to Lodge Plugs regarding spark plug failures and misfiring during testing on a Bentley engine.16th Jan 1935Box 162 \ 6  img276
Letter from Lodge Plugs Ltd. regarding misfiring issues with model X434/1 plugs on a Bentley car.18th Jan 1935Box 162 \ 6  img277
Letter from Lodge Plugs Ltd regarding the supply and testing of various sparking plugs.19th Jan 1935Box 162 \ 6  img278
Letter from Lodge Plugs Limited regarding the modification and return of Bentley plugs for testing.11th Feb 1935Box 162 \ 6  img279
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