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 Marles (Patent) Steering Gear, Series 7 & 8.14th Mar 1935Box 28 \ 3  Scan136
Request to return loaned 'Gemmer Model 370' steering gear parts to The Adamant Engineering Co. Ltd.14th Mar 1935Box 28 \ 3  Scan137
Letter to Adamant Engineering concerning the assembly of a Bentley steering gear and the return of loaned parts.14th Mar 1935Box 28 \ 3  Scan138
Letter from Adamant Engineering Company regarding a standard top cover for a gear.15th Mar 1935Box 28 \ 3  Scan139
Invoice from Adamant Engineering Co. Ltd. for three sets of Cams and Rollers.20th Mar 1935Box 28 \ 3  Scan140
Letter to Adamant Engineering Co. Ltd. confirming a three-week delivery for a 'double tooth follower type' steering component.21th Mar 1935Box 28 \ 3  Scan141
Adaptation of the standard 17 Marles steering to suit the 20/25 chassis, including modifications and bearing options.22th Feb 1935Box 28 \ 3  Scan142
Letter from Fairey Aviation Company to E.W. Hives regarding a steering stabiliser for adaptation to aircraft controls.22th Mar 1935Box 28 \ 3  Scan143
Letter from Adamant Engineering regarding the delivery of a small double-tooth type steering gear and a potential delay due to sourcing parts from the USA.23th Mar 1935Box 28 \ 3  Scan144
Mechanical efficiency and weight of the Marles Steering gear for the Spectre model.3rd Apr 1935Box 28 \ 3  Scan145
Efficiency and testing of the Marles Steering gear for the Spectre model.3rd Apr 1935Box 28 \ 3  Scan146
Method for grinding the Marles steering box worm to standardise it for 20/25, Spectre, and Wraith chassis.17th Apr 1935Box 28 \ 3  Scan147
Letter to Adamant Engineering regarding unsatisfactory results with double tooth steering components.25th Apr 1935Box 28 \ 3  Scan148
Letter from Adamant Engineering Company arranging a meeting to discuss issues with a Bentley Steering gear.27th Apr 1935Box 28 \ 3  Scan149
Letter from Adamant Engineering Company regarding the specifications and dispatch of a double tooth gear for a Bentley car.29th Apr 1935Box 28 \ 3  Scan150
Letter to Comdr. Matravers of The Adamant Engineering Co. Ltd. confirming a meeting.1st May 1935Box 28 \ 3  Scan151
General arrangement of Marles Steering Gear RH 2 inch type.24th Apr 1935Box 28 \ 3  Scan152
General arrangement drawing of a Marles R.H. 1 5/8 type steering gear.16th Mar 1934Box 28 \ 3  Scan153
Blueprint for a roller assembly with detailed specifications and dimensions.20th Feb 1935Box 28 \ 3  Scan154
General arrangement of a Marles right-hand steering gear, 1 31/32 type.12th Feb 1935Box 28 \ 3  Scan155
Sticking points and potential solutions for the Spectre Marles steering system.10th May 1935Box 28 \ 3  Scan156
The challenges and methods of grinding a Hindley worm gear.10th May 1935Box 28 \ 3  Scan157
Bearing alloy tests, Ford V.8 rear axles, Bentley tappet noise, and steering components.10th May 1935Box 28 \ 3  Scan158
Requesting the settlement of a £20 invoice for steering.24th May 1935Box 28 \ 3  Scan159
Issues with Marles steering on Spectre models, comparing it to La Salle steering and requesting adjustments and inspection.29th May 1935Box 28 \ 3  Scan160
Letter to The Adamant Engineering Co. Ltd. discussing the reasons for tight spots on a large double tooth Marles gear.30th May 1935Box 28 \ 3  Scan161
Letter discussing potential manufacturing errors causing tight spots in gear components.30th May 1935Box 28 \ 3  Scan162
Requesting the production of left and right-hand rockershafts for a Spectre steering box to be used on the 25 HP model.6th Jun 1935Box 28 \ 3  Scan163
Invoice from Adamant Engineering Co. Ltd. for an L7 Gear, seeking approval for payment.6th Jun 1935Box 28 \ 3  Scan164
Letter from Adamant Engineering Co., Ltd. regarding invoice 17827 for an 'L7' Type Gear and parts.5th Jun 1935Box 28 \ 3  Scan165
Return of loaned steering gear parts to The Adamant Engineering Co.8th Jun 1935Box 28 \ 3  Scan166
Requesting the return of loaned 'Marles' L.7 type R.H. Steering Gear parts.8th Jun 1935Box 28 \ 3  Scan167
Letter from Adamant Engineering discussing drawings of a Bentley gear cam track and roller to investigate interference causing tight spots.3rd Jun 1935Box 28 \ 3  Scan168
Letter from Adamant Engineering Company explaining the complex interaction between a roller and cam track, referencing accompanying drawings.3rd Jun 1935Box 28 \ 3  Scan169
Letter to Adamant Engineering Co. Ltd. arranging a meeting to discuss a large gear and the sending of a steering gear.17th Jun 1935Box 28 \ 3  Scan170
Request to send the Spectre Steering Box to Adamant Engineering Co. Ltd. in Luton.17th Jun 1935Box 28 \ 3  Scan171
Letter from Adamant Engineering Company confirming a meeting with Mr. Hardy.18th Jun 1935Box 28 \ 3  Scan172
Request to place an order with Adamant Engineering Co. for special cams for experimental Spectre steering.21th Jun 1935Box 28 \ 3  Scan173
Supplier's recommendation to use steel instead of brass for roller bearing cages in a steering system.21th Jun 1935Box 28 \ 3  Scan174
Comparison of R.R. Marles steering and La Salle steering, detailing design differences to understand performance variations.26th Jun 1935Box 28 \ 3  Scan175
Analysis of mechanical efficiency differences between various steering gear designs, comparing an R.R. gear with a La Salle gear.26th Jun 1935Box 28 \ 3  Scan176
Program of experiments on the Spectre gear, focusing on cam design modifications.26th Jun 1935Box 28 \ 3  Scan177
Letter to Adamant Engineering Co. Ltd. regarding the delivery of experimental double tooth cams and rollers.4th Jul 1935Box 28 \ 3  Scan178
Letter from Adamant Engineering Company regarding fitment issues with steering box components they are manufacturing.5th Jul 1935Box 28 \ 3  Scan179
Blueprint of a rocker shaft L7 and L8 type RH.24th Jun 1930Box 28 \ 3  Scan180
Blueprint drawing for a serrated pin for a roller.21th Jul 1930Box 28 \ 3  Scan181
Requesting the dispatch of a Spectre steering rockershaft to Adamant Engineering Co. for modification.6th Aug 1935Box 28 \ 3  Scan182
Letter to Adamant Engineering Co. Ltd. regarding the return of a rockershaft steering box and an inquiry about a cam.6th Aug 1935Box 28 \ 3  Scan183
Letter from Adamant Engineering Company regarding the dispatch and return of steering components.12th Aug 1935Box 28 \ 3  Scan184
Request for the manufacture of two housings to test cam bearing friction for Marles Steering on Spectre & 25 HP models.27th Aug 1935Box 28 \ 3  Scan185
Requesting an urgent order of steering components from the Adamant Engineering Co. for experimental work on a 25 HP car.5th Sep 1935Box 28 \ 3  Scan186
Requesting steering adjustments on car 3-B-IV, to remove backlash and reduce spring movement.6th Sep 1935Box 28 \ 3  Scan187
Problems with the 'Spectre' steering and proposing a plan to test and develop it in France using car 21-G-IV.6th Sep 1935Box 28 \ 3  Scan188
The modifications and trial arrangements for the steering gear of the Spectre and 20/25 HP models.6th Sep 1935Box 28 \ 3  Scan189
Specifications for three build variations of 'Gear No. 2' and associated housing modifications.6th Sep 1935Box 28 \ 3  Scan190
List of parts to be supplied by Adamant Engineering Co. and Timkens for two different gear assemblies.6th Sep 1935Box 28 \ 3  Scan191
List of parts on order for Gear No. 2 from Adamants and Timkens.6th Sep 1935Box 28 \ 3  Scan192
Letter from Adamant Engineering Company regarding a revised delivery schedule for special tools and gauges.10th Sep 1935Box 28 \ 3  Scan193
Postscript to a letter clarifying a mistake regarding instructions for rollers and lead cams.10th Sep 1935Box 28 \ 3  Scan194
Letter to Adamant Engineering Co. Ltd. regarding a delay in the completion of steering parts.13th Sep 1935Box 28 \ 3  Scan195
Letter from a supplier regarding production difficulties and a revised delivery schedule for special Cams and Rollers.14th Sep 1935Box 28 \ 3  Scan196
Second page of a letter to W.A. Robotham regarding the urgency of right-hand cams.14th Sep 1935Box 28 \ 3  Scan197
Letter to The Adamant Engineering Co.Ltd. clarifying an order for cams and rollers.17th Sep 1935Box 28 \ 3  Scan198
Letter from a supplier acknowledging an urgent order for special Cams and Rollers.18th Sep 1935Box 28 \ 3  Scan199
Letter from Adamant Engineering Company regarding the delivery of Cams, Rollers, a drawing number correction, and Timken Bearings.19th Sep 1935Box 28 \ 3  Scan200
Letter from Adamant Engineering Company Limited clarifying their position on supplying Cups for Timken Bearings.19th Sep 1935Box 28 \ 3  Scan201
Specification sheet for rollers used in Spectre & 20/25 HP steering parts.27th Sep 1935Box 28 \ 3  Scan202
Specification table for Cams used in Spectre & 20/25 HP Steering Parts.27th Sep 1935Box 28 \ 3  Scan203
Letter from Adamant Engineering Company regarding a proposed meeting at Olympia to settle matters concerning experimental sets.18th Oct 1935Box 28 \ 3  Scan204
Letter to Commander Matravers arranging to meet at the Rolls-Royce stand at Olympia.21th Oct 1935Box 28 \ 3  Scan205
Letter from Adamant Engineering Company to W.A. Robotham regarding a missed meeting and arranging a visit.24th Oct 1935Box 28 \ 3  Scan206
Letter from Adamant Engineering Company to Mr. Robotham arranging a meeting and lunch at Olympia.22th Oct 1935Box 28 \ 3  Scan207
Letter to Commander Matravers of Adamant Engineering arranging a meeting to discuss steering matters.29th Oct 1935Box 28 \ 3  Scan208
Letter from Adamant Engineering Co. to W.A. Robotham confirming a visit to Derby.31th Oct 1935Box 28 \ 3  Scan209
Specification for the Marles Gear, including a list of supplied parts.5th Nov 1935Box 28 \ 3  Scan210
Corrections to Phantom III steering components by the Adamant Co.7th Nov 1935Box 28 \ 3  Scan211
Oil leak from the Ph.III & 25 HP Marles Type Steering gear and a suggested modification.11th Nov 1935Box 28 \ 3  Scan212
Oil leak from a Ph.III & 25 HP Marles Type Steering box, identifying the cause and proposing a modification.11th Nov 1935Box 28 \ 3  Scan213
Letter from Adamant Engineering Company confirming an alteration to an order for Cams and Rollers.11th Dec 1935Box 28 \ 3  Scan214
Modifications to the Marles Steering box for the Phantom III model.17th Dec 1935Box 28 \ 3  Scan215
Comparison of torsional deflection and stiffness for various rocker shaft designs under a specific load.13th Dec 1935Box 28 \ 3  Scan216
The weakness of a Marles steering box and recommendations for strengthening it with larger bolts.20th Dec 1935Box 28 \ 3  Scan217
Letter from Dunlop Pneumatic Tyre Co. Ltd. discussing tyre balance guarantees and valve fitting specifications.2nd Dec 1911Box 28 \ 4  Scan001
The second page of a letter from The Dunlop Pneumatic Tyre Co Ltd to Wm. Cowen Esq.2nd Dec 1911Box 28 \ 4  Scan002
Departmental memo forwarding a letter from the Dunlop Tyre Co. for comment.4th Dec 1911Box 28 \ 4  Scan003
Meeting notes concerning steering wobbles and a scheduled discussion with the Michelin Tyre Co. about tyre balance.4th Dec 1911Box 28 \ 4  Scan004
Committee response to suggestions for improving lubrication access for the steering rod and gearbox filler.4th Dec 1911Box 28 \ 4  Scan005
Committee response regarding a suggestion to use an overflow cock instead of a dipstick for indicating gearbox oil level.14th Oct 1913Box 28 \ 4  Scan006
Committee meeting minute discussing a suggestion by Mr. Henning for lubricating the steering rod.4th Dec 1911Box 28 \ 4  Scan007
Meeting minutes discussing steering lubrication methods and a locking scheme for a specific car.6th Dec 1911Box 28 \ 4  Scan008
Departmental memo discussing tyre balance issues and applying pressure on manufacturers.6th Dec 1911Box 28 \ 4  Scan009
Inadvisable strategy of threatening a supplier by considering buying tyres from other manufacturers.7th Oct 1911Box 28 \ 4  Scan010
Letter discussing the superiority of British Oak over Hickory for wheel spokes.5th Dec 1911Box 28 \ 4  Scan011
Letter from Dunlop explaining the use of British Oak over American Hickory for wheel spokes.7th Dec 1911Box 28 \ 4  Scan012
Meeting minutes regarding a suggestion for the lubrication of the steering rod joint.3rd Jan 1912Box 28 \ 4  Scan013
Meeting minutes discussing the issue of steering wobbles and the need for further tyre balance testing.3rd Jan 1912Box 28 \ 4  Scan014
Steering wobble and tyre balance tests.11th Jan 1912Box 28 \ 4  Scan015
Departmental memo discussing the issue of steering wobbles caused by unbalanced tyres and the unsatisfactory method of fixing balance weights.14th Jun 1912Box 28 \ 4  Scan016
Departmental memo discussing potential solutions for issues caused by unbalanced tyres.18th Mar 1912Box 28 \ 4  Scan017
Fixing security bolts to prevent steering wobbles caused by unbalanced front wheels.18th Mar 1912Box 28 \ 4  Scan018


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