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
Acknowledgment of order for master battery switch samples for approval from Rotax Limited.18th Nov 1935Box 168a \ 2  img193
The Conditions of Sale for goods.10th May 1934Box 168a \ 2  img194
Letter from Imperial Airways advising that they do not use a battery master switch on their aircraft.18th Nov 1935Box 168a \ 2  img195
Request to order two N5DH battery master switches for aircraft from Messrs. Rotax, Ltd.19th Nov 1935Box 168a \ 2  img196
Internal order for a 24-volt B.T.H. Solenoid starter switch for Merlin installation test purposes.20th Nov 1935Box 168a \ 2  img197
Description of the operation of a push-button combination switch for controlling two circuits, used for aircraft engine starting.4th Dec 1935Box 168a \ 2  img198
The modification of Lucas W.T. horn relay switch units for loud operation.4th Dec 1935Box 168a \ 2  img199
Internal request to order two magneto earthing switches from Messrs. Bonnella for the Merlin Horsley at Hucknall.24th Dec 1935Box 168a \ 2  img200
Order for a D.P. magneto switch, A.M. type Ec/548, for use on J6811 to replace an existing switch.30th Dec 1935Box 168a \ 2  img201
Internal order request for solenoid and push button switches for Merlin E engines.10th Jan 1936Box 168a \ 2  img202
Request to order two No.54105 two-way headlamp switches from Lucas Ltd, to be engraved 'Town and Country' for use with wind tone horns.21th Jan 1936Box 168a \ 2  img203
Request for two headlamp changeover switches with engraved instructions for cars in the Experimental Department.24th Jan 1930Box 168a \ 2  img204
Standardisation of a headlamp dipper foot switch.24th Sep 1935Box 168a \ 2  img205
Cost estimation for extra jigs, tools, and equipment, with a cost comparison between an old and new part.19th Nov 1935Box 168a \ 2  img206
Unreadable, dark document with two punch holes on the right.7th Feb 1936Box 168a \ 2  img208
Quotation from Rotax Limited for a sample N.S.F.Q. Push Switch.7th Feb 1936Box 168a \ 2  img209
Letter from Rotax Limited detailing the delivery status for Switches, Carbon Brushes, Springs, Spanners, Magnetos, and Motors.8th Feb 1936Box 168a \ 2  img210
Request to rewind the shunt coil on an Aero-Battery ignition changeover switch with a larger gauge wire.16th Mar 1936Box 168a \ 2  img211
Requesting an order for Lucas wind-horn changeover switches for a Bentley car.25th Mar 1936Box 168a \ 2  img212
Arranging the dispatch of an experimental ignition relay switch for testing at R.A.E. South Farnborough.28th Mar 1936Box 168a \ 2  img213
Letter confirming the dispatch of a redesigned ignition changeover switch for R.T. interference testing.26th Mar 1936Box 168a \ 2  img214
Internal request to order one BTH solenoid aero starter motor switch for 12-volt operation.1st Apr 1936Box 168a \ 2  img215
Specifying the wire to be used for windings on two remaining battery ignition changeover switches.1st Apr 1936Box 168a \ 2  img216
Request to build a test Foot Switch with a stronger spring and new toggle arm to achieve a better snap action.8th Apr 1936Box 168a \ 2  img217
Letter to the Royal Aircraft Establishment requesting news on the results of their tests.15th Apr 1936Box 168a \ 2  img218
Letter from the Royal Aircraft Establishment regarding tests on a switch.20th Apr 1936Box 168a \ 2  img219
Letter arranging the supply of six push and pull switches without engraving from the Motor Roof Lamp Co.15th May 1936Box 168a \ 2  img220
Order for 6 plain RR pull and push switches to be sent to Lillie Hall.16th May 1936Box 168a \ 2  img221
Request for the return of a sample change-over relay switch being tested for radio interference.23th May 1936Box 168a \ 2  img222
Letter from the Royal Aircraft Establishment regarding radio interference tests on coil ignition relay switches.5th Jun 1936Box 168a \ 2  img223
List of parts required to complete changeover switches for aero battery ignition.5th Jun 1936Box 168a \ 2  img224
Letter to the Royal Aircraft Establishment requesting a sketch of a proposed modification to an ignition changeover relay switch.13th Jun 1936Box 168a \ 2  img225
Internal order request for B.T.H. solenoid relay switches for Merlin F engines, which was later cancelled.13th Jun 1936Box 168a \ 2  img226
Ordering 20 Rotax push button switches for Merlin F engines.13th Jun 1936Box 168a \ 2  img227
The return of four 24 Volt Rotax solenoid relay switches for conversion to 12 Volt.13th Jun 1936Box 168a \ 2  img228
Letter to British Thomson Houston Co. Ltd. requesting production of a type Phantom I starter switch for examination and testing.13th Jun 1936Box 168a \ 2  img229
Rejecting the proposal to change the Phantom III Horn Push Button Switch from a chromium finish to black bakelite.10th Jul 1936Box 168a \ 2  img230
Internal request to obtain a Buick accelerator switch and Delco Remy Electric parts.29th Jul 1936Box 168a \ 2  img231
Despatch of a starter relay switch for the Hawker P.4/34 aircraft.29th Aug 1936Box 168a \ 2  img232
Adoption of a new push and pull switch for the starter motor and booster coil, replacing an unsatisfactory tumbler switch.12th Sep 1936Box 168a \ 2  img233
Confirming the cancellation of starter relay switches for Merlin engined aircraft.14th Sep 1936Box 168a \ 2  img234
Cancellation of an order for starter relay switches for Merlin engined aircraft.14th Sep 1936Box 168a \ 2  img235
Return of 20 Rotax push-button switches for the first Merlin engines.19th Sep 1936Box 168a \ 2  img236
Instruction to return 20 N.S.C.D. switches to Messrs Rotax Ltd for credit.29th Sep 1936Box 168a \ 2  img237
New parts required for the Phantom III Type Switchbox on the 25/30 HP Chassis.10th Jun 1936Box 168a \ 2  img238
To Roy requesting an order for two B.T.H. combined aero booster coils and starter motor switches.4th Sep 1936Box 168a \ 2  img239
Letter from the Air Ministry discussing the safety and necessity of a master switch for forced landing relay circuits.1st Oct 1936Box 168a \ 2  img240
Responding to a suggestion about fitting switches to aeroplane electrical systems to prevent accidental starts.8th Oct 1936Box 168a \ 2  img241
Sales letter from Burgess Products Company Ltd regarding a switch operated by .001 inch movement.8th Oct 1936Box 168a \ 2  img242
Advertisement for the Burgess Micro Switch, detailing its features and specifications.1st Jan 1936Box 168a \ 2  img243
Datasheet describing the mechanical features of the Burgess Micro Switch.1st Jan 1936Box 168a \ 2  img244
The electrical characteristics of the Burgess Micro Switch.1st Jul 1936Box 168a \ 2  img245
Product data sheet for the Burgess Micro Switch, detailing its applications, operation, and specifications.1st Jul 1936Box 168a \ 2  img246
Notification about the blueprint for a footswitch used with Marchal Headlamps.21th Oct 1936Box 168a \ 2  img247
Fatigue failure of a foot switch return spring and recommending a replacement.28th Oct 1936Box 168a \ 2  img248
More economical modified design for the instrument board light dimmer switch resistance unit.2nd Nov 1936Box 168a \ 2  img249
Instruction request for modifications to the assembly of a foot switch.3rd Nov 1936Box 168a \ 2  img250
Parts list for a new petrol pump switch to be fitted on the instrument board for all chassis.7th Nov 1936Box 168a \ 2  img251
Request to fit instrument board dimmer switches to chassis 35EX and 37EX.12th Nov 1936Box 168a \ 2  img252
Letter from Joseph Lucas Limited concerning a sample 2-Way Push type switch.19th Nov 1936Box 168a \ 2  img253
Parts list for a foot switch applicable to all chassis.3rd Nov 1935Box 168a \ 2  img254
The urgent fitting of new parts to all cars currently in production.7th Nov 1936Box 168a \ 2  img255
Listing sub-assemblies and requesting an experimental trial for a switch.3rd Nov 1936Box 168a \ 2  img256
Instruction to fit stiffener plates to the starter main switches on all Experimental cars as they come into the shop.30th Nov 1936Box 168a \ 2  img257
Tooling, cost reduction, and design of a petrol pump switch following a meeting with Messrs. Lucas.4th Dec 1936Box 168a \ 2  img258
Request to allocate 20 petrol pump switches from a larger order for use on experimental cars.9th Dec 1936Box 168a \ 2  img259
Request to fit an instrument dimmer switch to Sg's car while it is in the shop.10th Dec 1936Box 168a \ 2  img260
Delaying the fitment of an unsatisfactory foot switch for Chassis 6.B.IV and 35-EX.17th Dec 1936Box 168a \ 2  img261
Production specification for the inspection and testing of a starter main switch.30th Nov 1936Box 168a \ 2  img262
Production inspection and test specification for a starter main switch unit.30th Nov 1936Box 168a \ 2  img263
Procedure for checking various gaps and conducting electrical tests on a switch unit.30th Nov 1936Box 168a \ 2  img264
Testing procedures for a switch, specifying contact pressure and voltage tolerance tests.30th Nov 1936Box 168a \ 2  img265
Table of gap measurements for a main switch unit in various positions.24th Dec 1936Box 168a \ 2  img266
Inspection and testing report on a new footswitch, detailing required modifications.24th Dec 1936Box 168a \ 2  img267
The despatch of an Ignition Change over Switch for testing purposes.29th Dec 1936Box 168a \ 2  img268
Request to fit an instrument dimmer switch, a fog lamp, and a petrol pump switch to chassis 39-EX.1st Jan 1937Box 168a \ 2  img269
Instructions for fitting a new type of foot switch to the Wraith II chassis.22th Jan 1937Box 168a \ 2  img270
Requesting the modification and refitting of three dimmer switches on cars 35 Ex and 39 Ex.15th Feb 1937Box 168a \ 2  img271
Complaint about a serious failure of the foot switch on chassis 36-EX, requesting its removal for examination.22th Feb 1937Box 168a \ 2  img272
The development and standardization of a new chassis foot switch for international regulations.3rd Mar 1937Box 168a \ 2  img273
Testing, sourcing, and design issues of a chassis foot switch.4th Mar 1937Box 168a \ 2  img274
Refuting claims that a chassis foot switch failed due to a lack of lubrication.6th Mar 1937Box 168a \ 2  img275
Factory costs for a footswitch and a petrol pump switch.9th Mar 1937Box 168a \ 2  img276
Request for a set of parts for the Foot Switch on a 'Phantom III' Chassis.9th Mar 1937Box 168a \ 2  img277
Comparative costs of petrol pump switches and foot switches from an external supplier versus in-house designs.9th Mar 1937Box 168a \ 2  img278
Letter to J. Lucas Ltd. requesting up-to-date footswitches and outline drawings.8th Apr 1937Box 168a \ 2  img279
Testing and standardizing a new Lucas headlamp foot switch for all chassis.8th Apr 1937Box 168a \ 2  img280
Internal request for the address of the supplier of small instrument board switches.9th Apr 1937Box 168a \ 2  img281
Phantom III lighting, specifically requesting a copy of instructions for coachbuilders and a look at a proposed switch.9th Apr 1937Box 168a \ 2  img282
Identifying the supplier of push-pull instrument board switches.10th Apr 1937Box 168a \ 2  img283
Footswitches, attaching a drawing and sample, and discussing a protective rubber sleeve.12th Apr 1937Box 168a \ 2  img284
Cost-saving modifications to the Phantom III main starter switch.15th Apr 1937Box 168a \ 2  img285
Technical note on a simplified design for a switch with solid copper contacts for aircraft use.15th Apr 1937Box 168a \ 2  img286
Requesting an opportunity to inspect and test a starter motor main relay switch.16th Apr 1937Box 168a \ 2  img287
Faulty Lucas petrol pump switches and proposed modifications.10th Apr 1937Box 168a \ 2  img288
The modification and testing of a Lucas dual fuel pump switch to improve reliability and prevent electrical tracking.19th Apr 1937Box 168a \ 2  img289
Standardisation of a stiffener plate for starter switch copper contacts to improve pressure and prevent failure.24th Mar 1937Box 168a \ 2  img290
Standardisation of a stiffener plate for the starter switch on the Phantom III to prevent failure.12th Apr 1937Box 168a \ 2  img291
Nil extra tool cost for production changes to the 'E' Series chassis.12th Apr 1937Box 168a \ 2  img292
This document is unreadable due to the quality of the scan.20th Apr 1937Box 168a \ 2  img294


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