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
The failure of a 2nd Motion Shaft in a gear box, detailing mileage, suspected cause, and the implemented solution.27th Jun 1939Box 136 \ 2  scan0125
Photograph of a helical gear layshaft cluster.3rd Jul 1939Box 136 \ 2  scan0126
Drawing for the arrangement of Timken Bearings for a gearbox layshaft intended for dynamometer testing.3rd Jul 1939Box 136 \ 2  scan0127
Letter from Overdrive Gears Ltd. regarding an improved overdrive design and potential collaboration.18th Jul 1939Box 136 \ 2  scan0128
Confirmation to dispense with the servo on the small gearbox for the Junior Rationalised range.20th Jul 1939Box 136 \ 2  scan0129
Design and scaling of a 'Junior Gearbox' to achieve weight savings for smaller cars.28th Jul 1939Box 136 \ 2  scan0130
Comparison table of component metrics, possibly weights or costs, for different engine sizes.28th Jul 1939Box 136 \ 2  scan0131
Design specifications for the Junior gearbox and axle, considering engine sizes and sales projections.5th Aug 1939Box 136 \ 2  scan0132
Parts list and request for blueprints for a Gear Box Gear Test Rig.12th Aug 1939Box 136 \ 2  scan0133
Typed list of parts with their corresponding part numbers and quantities required.24th Apr 1939Box 136 \ 2  scan0134
Inquiring about the Alvis gearbox patent, referencing the Hillman Minx, for potential use in the Myth Gear-box.9th Oct 1939Box 136 \ 2  scan0135
Acquisition of an Alvis gearbox patent specification, thought to be common with Minx cars.11th Oct 1939Box 136 \ 2  scan0136
Letter to Ransome & Marles Bearing Co. Ltd. inquiring about the status of bearing preload tests, now required for the Aero Department.11th Oct 1939Box 136 \ 2  scan0137
Gear change lever design for the American market, comparing column-mounted shifters to floor-mounted ones.21th Oct 1939Box 136 \ 2  scan0138
Order for a Hillman 14 gearbox from Pickford's.23th Oct 1939Box 136 \ 2  scan0139
Alterations to the reverse mechanism of the Myth gearbox.3rd Nov 1939Box 136 \ 2  scan0140
Pencil sketch of a mechanical linkage for reverse operation.6th Nov 1939Box 136 \ 2  scan0141
Memo discussing difficulties with the reverse gear on the Myth and L.H. Phantom gearboxes and proposing a solution.6th Nov 1939Box 136 \ 2  scan0142
Hand-drawn sketch with dimensions for a proposed reverse operation on a Left Hand Phantom.6th Nov 1939Box 136 \ 2  scan0143
Experiments with a synchro-mesh gearbox and reverse selector spring modifications.14th Nov 1939Box 136 \ 2  scan0144
Proposal from an Italian inventor for an automatic change speed gear system.29th Nov 1939Box 136 \ 2  scan0145
Letter from Eligio Mirone listing the advantages of an automatic change speed gear.12th Dec 1939Box 136 \ 2  scan0146
Secret memo discussing proposals for the simplification of the Senior Rationalised Gearbox.12th Dec 1939Box 136 \ 2  scan0147
Secret memorandum discussing the simplification of the Senior Rationalised Gearbox and a proposal to reverse gear positions.12th Dec 1939Box 136 \ 2  scan0148
Sending an engine unit to the repair department for overhaul to be used in a Vulture gearbox test rig.20th Dec 1939Box 136 \ 2  scan0149
Request for the manufacture of parts for a simplified synchromesh scheme for a rationalised gearbox.28th Dec 1939Box 136 \ 2  scan0150
Request to issue a covering order to Messrs. S. Smith & Sons Ltd. for a Right Angle gearbox.28th Dec 1939Box 136 \ 2  scan0151
Requesting information and feedback on the Cotal gearbox and discussing seaplane landing gear.19th Jan 1940Box 136 \ 2  scan0152
Typed letter to O. Bowden regarding the trial of a car with a Cotal gearbox and arranging a follow-up visit.19th Jan 1940Box 136 \ 2  scan0153
Letter from Morris Motors Ltd. acknowledging correspondence and informing that the proposed meeting date is not convenient.23th Jan 1940Box 136 \ 2  scan0154
List of new blueprints and drawings for the PL. 65 Revised Senior Gearbox.25th Jan 1940Box 136 \ 2  scan0155
Letter from Morris Motors regarding an opportunity to view a Cotal gearbox at Wolseley Motors.25th Jan 1940Box 136 \ 2  scan0156
Accompanying blueprints for a Revised Senior Gearbox.25th Jan 1940Box 136 \ 2  scan0157
Letter from Wolseley Motors Limited regarding an interest in the Cotal gearbox.26th Jan 1940Box 136 \ 2  scan0158
Drawings for a revised senior gearbox and a request to produce 7 sets.26th Jan 1940Box 136 \ 2  scan0159
Letter to O. Boden of Morris Motors Ltd. regarding co-operation.27th Jan 1940Box 136 \ 2  scan0160
Letter to W.M.J. Thomas of Wolseley Motors Ltd. regarding the arrangement of a meeting.27th Jan 1940Box 136 \ 2  scan0161
Letter from the Managing Director of Wolseley Motors Ltd. to Mr. Robotham arranging a visit.30th Jan 1940Box 136 \ 2  scan0162
Modifications to the ride control for Right Hand Cars with Senior Gearboxes.31th Jan 1940Box 136 \ 2  scan0163
Letter to W. Thomas of Wolseley Motors Limited postponing a visit due to snow.1st Feb 1940Box 136 \ 2  scan0164
Production methods for gear tooth serrations on an RG.181 insert outer cone.7th Feb 1940Box 136 \ 2  scan0165
Invitation from Wolseley Motors Ltd to view and test Cotal gearbox components and activities.9th Feb 1940Box 136 \ 2  scan0166
Manufacturing method for an outer cone insert's internal teeth.9th Feb 1940Box 136 \ 2  scan0167
Missing prints for a Senior Gear Box 3rd Speed Driven Gear, urging action to allow machining to proceed.12th Feb 1940Box 136 \ 2  scan0168
Alteration note for a Senior Gearbox Reverse Shaft, adding centre drilling at each end.13th Feb 1940Box 136 \ 2  scan0169
Letter to W.M.W. Thomas of Wolseley Motors arranging a meeting.12th Feb 1940Box 136 \ 2  scan0170
Dispatch of 2 blueprints for the ER.5332 2nd speed driven gear.15th Feb 1940Box 136 \ 2  scan0171
Blueprints for a revised senior gearbox driven gear.15th Feb 1940Box 136 \ 2  scan0172
Visit to Wolseley's to inspect a Cotal gearbox and compare it with a standard model.16th Feb 1940Box 136 \ 2  scan0173
Development of a gearbox, including issues with magnets and plans for a new design based on a Chrysler unit.16th Feb 1940Box 136 \ 2  scan0174
Updates and part replacements for the Senior Range gearbox and actuating gear.16th Feb 1940Box 136 \ 2  scan0175
Changes and updates to a gearbox design, including features to be removed and modifications to its components.18th Feb 1940Box 136 \ 2  scan0176
Letter to Wolseley Motors Ltd. arranging a factory visit and the collection of a loaned Cotal gear box.16th Feb 1940Box 136 \ 2  scan0177
Letter to Morris Motors regarding the loan of a Cotal gearbox, gearbox research, and injection equipment.16th Feb 1940Box 136 \ 2  scan0178
Letter of inquiry to 'Autocar' magazine regarding a pre-selector synchromesh gearbox.16th Feb 1940Box 136 \ 2  scan0179
Letter from Wolseley Motors Ltd regarding arrangements for the collection of a Cotal Gearbox.17th Feb 1940Box 136 \ 2  scan0180
Letter to Wolseley Motors Ltd. arranging a visit and requesting information on a patented two-speed marine gearbox.20th Feb 1940Box 136 \ 2  scan0181
Letter from Morris Motors Ltd. regarding the Cotal gearbox and petrol injection equipment.20th Feb 1940Box 136 \ 2  scan0182
Letter from Iliffe & Sons Ltd. discussing a pre-selector gearbox mechanism and its designer.21th Feb 1940Box 136 \ 2  scan0183
Letter from Wolseley Motors Ltd confirming they are gathering information on the Cotal gearbox.22th Feb 1940Box 136 \ 2  scan0184
Alternative methods for securing outer cones in the Senior Gearbox due to issues with peening after cyanide hardening.22th Feb 1940Box 136 \ 2  scan0185
Questioning the use of bearings for the side shaft of the Junior Rationalised Gear Box.22th Feb 1940Box 136 \ 2  scan0186
Inquiry about a pre-selector operation described in an 'Autocar' article, requesting a demonstration or drawings.24th Feb 1940Box 136 \ 2  scan0187
Trial to rely on the press fit of the cones alone for the Senior Gear Box.24th Feb 1940Box 136 \ 2  scan0188
Letter from Wolseley Motors Ltd to W.A. Robotham regarding Cotal gearbox drawings and a proposed visit.24th Feb 1940Box 136 \ 2  scan0189
Continuation page of a letter from the Managing Director of Wolseley Motors Ltd.26th Feb 1940Box 136 \ 2  scan0190
Letter to W.M.W. Thomas of Wolseley Motors Ltd. about rescheduling a meeting.26th Feb 1940Box 136 \ 2  scan0191
Requesting a layout to assess the impact of fitting a Cotal gearbox, including a marine unit, into a Bentley.27th Feb 1940Box 136 \ 2  scan0192
Confirming the dispatch of preliminary blueprints for a gearbox casing.27th Feb 1940Box 136 \ 2  scan0193
Letter from A.B. Oliver responding to an enquiry about a gearbox, stating a demonstrator is unavailable and proposing a meeting.27th Feb 1940Box 136 \ 2  scan0194
Letter to A.B. Oliver, Esq. arranging a factory visit.1st Mar 1940Box 136 \ 2  scan0195
Revised clutch actuation for the Senior Gearbox (R.H. side change).1st Mar 1940Box 136 \ 2  scan0196
Blueprints for a revised clutch casing to suit a single lever actuation.1st Mar 1940Box 136 \ 2  scan0197
Blueprints and modifications for a Senior Gearbox with a right-hand side change.1st Mar 1940Box 136 \ 2  scan0198
Concluding page of a set of instructions, marked as page 2.1st Mar 1940Box 136 \ 2  scan0199
Revisions to the Senior Gearbox, including the speedo drive, damper pump casing, and dispatch of associated blueprints.1st Mar 1940Box 136 \ 2  scan0200
Left-hand side change modification for the Senior Gearbox, including associated part drawings.1st Mar 1940Box 136 \ 2  scan0201
Modifications and blueprints for the Senior Gearbox's Servo Drive to accommodate Tecalemit chassis lubrication.1st Mar 1940Box 136 \ 2  scan0202
Letter from A.C. Oliver to Mr. Robotham arranging a meeting to present the 'Oliver' gearbox.2nd Mar 1940Box 136 \ 2  scan0203
Gathering recommendations for a Cotal gearbox to cope with the 5 1/2 litre engine.4th Mar 1940Box 136 \ 2  scan0204
Translated document detailing the performance and usage of the Cotal electro-magnetic gearbox.20th Feb 1940Box 136 \ 2  scan0205
The price, performance, and power-absorption of Cotal gearboxes, with comparisons to Peugeot.4th Mar 1940Box 136 \ 2  scan0206
The recommended size of a Cotal gearbox for a 5.5-litre engine and plans for destructive testing.4th Mar 1940Box 136 \ 2  scan0207
List of gearbox-related parts, drawings and patent specifications loaned by Mr. Oliver.5th Mar 1940Box 136 \ 2  scan0208
Diagrams showing multiple sectional views of a pre-selective synchro-mesh gearbox.5th Oct 1938Box 136 \ 2  scan0209
Technical drawing showing multiple cross-sections of a pre-selective synchro-mesh gearbox.5th Oct 1938Box 136 \ 2  scan0210
Blueprints and parts for modifications to the gearbox and servo drive on Senior Range Cars.7th Mar 1940Box 136 \ 2  scan0211
Letter from Hallam, Sleigh & Cheston confirming arrangements for two heaters.7th Mar 1940Box 136 \ 2  scan0212
Notice detailing outstanding sections of instructions for the Senior Range Gear Box.8th Mar 1940Box 136 \ 2  scan0213
Gear and axle ratios for the Rippletto and Myth Class cars.8th Mar 1940Box 136 \ 2  scan0214
Comparison table of performance specifications for various non-Rolls Royce cars from the 1930s.8th Mar 1940Box 136 \ 2  scan0215
Comparative data table of various car models and their performance specifications.8th Mar 1940Box 136 \ 2  scan0216
Comparison table of specifications for various motor cars from 1937-1938.8th Mar 1940Box 136 \ 2  scan0217
Comparison table of vehicle specifications for various car models.8th Mar 1940Box 136 \ 2  scan0218
Comparison table of specifications for a Humber Saloon 'Snipe' and a Bentley Coupe Drop Head.8th Mar 1940Box 136 \ 2  scan0219
Technical particulars and specifications for the Minx Gearbox, detailing teeth counts and dimensions.8th Mar 1940Box 136 \ 2  scan0220
Grinding operation for splines and the possibility of cutting grooves in steel cores for gear teeth.8th Mar 1940Box 136 \ 2  scan0221
Gear and axle ratios for the Junior Gearbox on the Rippletto and Myth class cars.8th Mar 1940Box 136 \ 2  scan0222
Technical data sheet comparing specifications of various competitor cars from the 1930s.8th Mar 1940Box 136 \ 2  scan0223
Comparative data table of specifications for various British cars from the 1930s and 1940.8th Mar 1940Box 136 \ 2  scan0224


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