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 792 of 2367        Sort by   Box   Date   Description

Filter      from        to             identifier   [all]
DescriptionDateIdentifier
Letter seeking a decision on whether to proceed with further trials of a scheme or to cancel the proposal.11th Jun 1927Box 64 \ 3  scan0111
Status of the No.1 sequence starter scheme, pending trials of a No.2 scheme.14th Jun 1927Box 64 \ 3  scan0112
From 'R.' to 'EFC.' regarding the testing of a sequence starter for the EAC.7 engine.16th Jun 1927Box 64 \ 3  scan0113
Cancelling previous instructions and outlining new experiments for Sequence Starter Scheme No.1.22th Jun 1927Box 64 \ 3  scan0114
Difficulties and expense of fitting a No.1 sequence starter to the EAC.7 chassis.30th Jun 1927Box 64 \ 3  scan0115
Laboratory tests conducted on the No.1 scheme sequence starter.8th Jul 1927Box 64 \ 3  scan0116
Analysis of actuator box engagement and spiral performance under testing conditions.8th Jul 1927Box 64 \ 3  scan0117
Test report detailing the engagement and disengagement of a pinion and crankshaft under teazer and main power currents.8th Jul 1927Box 64 \ 3  scan0118
Test report comparing 20° and 5° spiral gears for an actuator switch mechanism, proposing an update for chassis 9-EX.8th Jul 1927Box 64 \ 3  scan0119
Modification to the Sequence Starter No.1 scheme for 9-EX, changing from a pinion operated switch to an actuator box operated switch.8th Jul 1927Box 64 \ 3  scan0120
Summary of experimental reports for the Sequence Starter No.1 scheme.8th Jul 1927Box 64 \ 3  scan0121
List of reference numbers for various Sequence starter motor and gear schemes.8th Aug 1927Box 64 \ 3  scan0122
Status report on various No.1 sequence starter gear components, specifically carcases and armatures.24th Aug 1927Box 64 \ 3  scan0123
The Sequence Starter No.1 Scheme, detailing the replacement and adjustment of a starter on chassis 9-EX.26th Aug 1927Box 64 \ 3  scan0124
Analysis of actuator box and pinion engagement angles for a sequence starter motor.26th Aug 1927Box 64 \ 3  scan0125
Continued analysis of actuator motor backlash and 'thump' noise, comparing different gear and pinion schemes.26th Aug 1927Box 64 \ 3  scan0126
Pinion and wheel teeth design, comparing rounded versus sharp corners to prevent jamming and proposing tests on a rubber buffer scheme.26th Aug 1927Box 64 \ 3  scan0127
Sequence starter schemes, comparing performance and methods to avoid jamming.26th Nov 1927Box 64 \ 3  scan0128
Design of gear teeth for an apparatus, focusing on noise reduction and engagement reliability.26th Nov 1927Box 64 \ 3  scan0129
Page 3 of a document discussing an experiment to reduce gear noise with helical teeth.8th Dec 1927Box 64 \ 3  scan0130
Selection and interchangeability of various sequence starter schemes for an engine.8th Dec 1927Box 64 \ 3  scan0131
Progress and redesign of a scheme, and the decision to abandon the original version.9th Jan 1928Box 64 \ 3  scan0132
Secret document detailing the three control circuits for the EAC.10 Super Sports sequence starter.9th Jan 1928Box 64 \ 3  scan0133
Description of proposed improvements for a patentable starter motor system, including a press button, motor, and magnetic switch unit.12th Mar 1928Box 64 \ 3  scan0134
Obsolete 'Contact Makers' purchased in 1925 for the Sequence Starter.12th Mar 1928Box 64 \ 3  scan0135
Responding to a previous query, authorizing the booking of six contacts and the disposal of the rest.28th Mar 1928Box 64 \ 3  scan0136
The weights of the R. Bosch and R.R. Sequence starter motor armatures.1st Jan 1929Box 64 \ 3  scan0137
Secret memo regarding the distribution of drawing LeC.1845 for a Starter Motor Actuator.12th Mar 1924Box 64 \ 3  scan0138
Specifications and drawings for electric starter actuator and pinion springs.15th Mar 1924Box 64 \ 3  scan0139
Design for a starter actuating device with suggestions for securing the coil.19th Mar 1924Box 64 \ 3  scan0140
Insulation test results for six starter solenoid coils.22th May 1924Box 64 \ 3  scan0141
Instructions detailing the average resistance and winding specifications for six EAC starter solenoid coils.12th Jun 1924Box 64 \ 3  scan0142
The parts for a silent starter gear actuator coil and requesting a prototype be made.26th Mar 1924Box 64 \ 3  scan0143
Secret internal memo with hand-drawn diagrams and annotations discussing design improvements for a sequence starter's actuator coil.28th Mar 1924Box 64 \ 3  scan0144
Improvements and testing for an Actuator Magnet Sequence Starter.8th Apr 1924Box 64 \ 3  scan0145
Requesting a blueprint and detailing a list of parts for a silent starter gear actuator.17th Apr 1924Box 64 \ 3  scan0146
Blueprints for parts relating to the Silent Starter Gear Actuator.25th Apr 1924Box 64 \ 3  scan0147
Instructions for the adjustment and testing of the silent starter gear actuator box unit.30th Oct 1924Box 64 \ 3  scan0148
Production test report for an E.A.C. Actuator Box 'A'.31th Oct 1924Box 64 \ 3  scan0149
Design improvements for a Sequence Starter, specifically for the bobbin, casing, and magnet.19th Jan 1926Box 64 \ 3  scan0150
List of prints for an Actuator, part of a Sequence Starter Motor.27th Jan 1926Box 64 \ 3  scan0151
Proposing a lubrication alteration for the Phantom starter actuation box on chassis 7-EX.23th Jun 1926Box 64 \ 3  scan0152
Lubrication of a fork on an actuating lever.23th Jun 1926Box 64 \ 3  scan0153
Specification for production inspection, adjustment, and testing of an EAC Actuator Box.9th Jul 1926Box 64 \ 3  scan0154
Page of test procedures for an actuator box and combined main switch/relay switch unit.19th Aug 1926Box 64 \ 3  scan0155
Chassis 12-EX after a 6000-mile test, noting performance of the dynamo, starter motor, and actuator box.19th Aug 1926Box 64 \ 3  scan0156
Technical memorandum detailing issues with a sequence starter scheme on an EAC.7 chassis and a proposed switch modification.6th Dec 1926Box 64 \ 3  scan0157
Testing a gear engagement mechanism, focusing on a spiral gear to reduce thump.6th Dec 1926Box 64 \ 3  scan0158
Troubleshooting and proposed modifications for a sequence starter mechanism.6th Dec 1926Box 64 \ 3  scan0159
Electrical experimental record sheet for a Sequence Starter actuator box.10th Nov 1924Box 64 \ 3  scan0160
Electrical experimental record sheet for a Sequence Starter actuator box.19th Apr 1926Box 64 \ 3  scan0161
Electrical experimental record sheet for a sequence starter actuator box.19th Apr 1926Box 64 \ 3  scan0162
Design and desirable placement of non-inductive resistances in a starter motor circuit.12th Jan 1924Box 64 \ 3  scan0163
Continuation page of a memorandum discussing electrical safety and the rearrangement of windings.12th Jan 1924Box 64 \ 3  scan0164
Secret memo about design changes and circuit queries for the X.9650 Electric Sequence Starter.15th Jan 1924Box 64 \ 3  scan0165
Design and justification for the E.A.C. starter.5th May 1924Box 64 \ 3  scan0166
Notes providing required information and corrections for drawing LeC. 1870 of a silent starter main switch unit.15th May 1924Box 64 \ 3  scan0167
Page 2 of a document describing the construction of an electrical component, including its windings, coils, and contacts.15th May 1924Box 64 \ 3  scan0168
Page detailing the construction of an electrical switch, with references to different views and assembly instructions.15th May 1924Box 64 \ 3  scan0169
Description of different views of an electrical magnet and switchbase assembly, including windings and resistance.14th May 1927Box 64 \ 3  scan0170
Page discussing the avoidance of expense in making mouldings for a device until more experience is gained.14th May 1927Box 64 \ 3  scan0171
Request for information on wire specifications for the EAC Silent Starter Gear.28th May 1924Box 64 \ 3  scan0172
Coil specifications for an E.A.C. silent starter gear.29th May 1924Box 64 \ 3  scan0173
Requesting particulars of resistance for a main switch.12th Jun 1924Box 64 \ 3  scan0174
Correcting previously supplied wire sizes for the EAC silent starter scheme.17th Jun 1924Box 64 \ 3  scan0175
Particulars of coils for the E.A.C. Silent Starter Gear.20th Jun 1924Box 64 \ 3  scan0176
Modifications to the windings and resistance of an E.A.C. silent starter gear.24th Jun 1924Box 64 \ 3  scan0177
Parts list for a Silent Starter Gear and Automatic Switch, referencing an accompanying blueprint.3rd Jul 1924Box 64 \ 3  scan0178
List of drawing numbers and corresponding part descriptions, page 2.3rd Jul 1924Box 64 \ 3  scan0179
Technical note detailing materials and sourcing for a switch and its components.3rd Jul 1924Box 64 \ 3  scan0180
Modifications and requesting clarification on an automatic switch design.17th Oct 1924Box 64 \ 3  scan0181
Specifications and adjustments for a combined main switch and relay switch unit.30th Oct 1924Box 64 \ 3  scan0182
Instructions for adjusting the main spring of a relay switch unit.30th Oct 1924Box 64 \ 3  scan0183
Revised gap adjustments for a combined main switch and relay switch unit.31th Oct 1924Box 64 \ 3  scan0184
Revised specifications for the contact gaps and spring tension of a combined main and relay switch unit.31th Oct 1924Box 64 \ 3  scan0185
Modifications, testing instructions, and the marking of experimental versus production units.31th Oct 1924Box 64 \ 3  scan0186
Specifications and ratios for the Main and Relay Switch Unit.3rd Nov 1924Box 64 \ 3  scan0187
Observations from the initial trial of the EAC.II silent starter gear units in the electrical laboratory.4th Nov 1924Box 64 \ 3  scan0188
Instructions for winding coils for an Actuator Box and Automatic Switch.5th Nov 1924Box 64 \ 3  scan0189
Standard Wire Gauge (SWG) for a hold-on coil in an Actuator Box & Automatic Switch.6th Nov 1924Box 64 \ 3  scan0190
Required modification to the silent starter gear to improve reliability.7th Nov 1924Box 64 \ 3  scan0191
Change in wire gauge specification for an Automatic Switch's Auxiliary Coil.7th Nov 1924Box 64 \ 3  scan0192
Seeking confirmation of wire sizes for an automatic switch and its components for production.10th Dec 1924Box 64 \ 3  scan0193
Confirming wire sizes for the EAC silent starter switch, while awaiting final confirmation for production.11th Dec 1924Box 64 \ 3  scan0194
Specification for the production inspection, adjustment, and testing of a combined main switch and relay switch unit.5th Mar 1928Box 64 \ 3  scan0195
Testing procedures for a main switch, detailing electrical and mechanical checks.5th Mar 1928Box 64 \ 3  scan0196
Specifications and verification procedures for a relay switch, including a table of contact gaps.1st Mar 1925Box 64 \ 3  scan0197
Continued test procedures for a relay switch unit.1st Mar 1925Box 64 \ 3  scan0198
Comparison of heavy and fine windings for a relay switch.6th Mar 1925Box 64 \ 3  scan0199
Instructions and descriptions for the X.8650 automatic switch.27th Oct 1925Box 64 \ 3  scan0200
Blueprints for an alternative scheme for securing the non-inductive resistance on an automatic switch.12th Nov 1925Box 64 \ 3  scan0201
Enclosing blueprints for a list of parts related to a main circuit switch.24th Dec 1925Box 64 \ 3  scan0202
Postponing the testing of a silent starter main and relay switch unit until minor modifications are made to the terminals.2nd Feb 1926Box 64 \ 3  scan0203
Issuance of prints for an automatic switch and sequence starter motor, with notes on manufacturing and part suitability.2nd Feb 1926Box 64 \ 3  scan0204
Model from the Pattern Shop for checking internal clearances and the use of a moulded base.2nd Jan 1926Box 64 \ 3  scan0205
General table of specifications for relay switch gaps.16th Feb 1926Box 64 \ 3  scan0206
The issuance of prints for sequence starter and starter switch parts.16th Feb 1926Box 64 \ 3  scan0207
Adjustments and a table of gap specifications for a silent starter combined main and relay switch.25th Feb 1926Box 64 \ 3  scan0208
Experimental record sheet for the E.H.C. M+R Switch A, tracking testing, modifications, and mileage.10th Nov 1924Box 64 \ 3  scan0209
Production test table for a silent starter combined main and relay switch unit.6th Mar 1925Box 64 \ 3  scan0210


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