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
Arranging a meeting with Messrs. Woodheads regarding the modification of rear springs.21th May 1920Box 42 \ 3  Scan101
Status update on the production and dispatch of rear springs from supplier Jonas Woodhead & Sons Ltd.1st Jun 1920Box 42 \ 3  Scan102
The testing of rear road springs without nibs and slots, detailing cracking failures after a bump rig test and squeaking during an on-car trial.1st Jun 1920Box 42 \ 3  Scan103
Spring bedding issues and testing new spring modifications with Ferodo strips.3rd Jun 1920Box 42 \ 3  Scan104
The material supply for laminated rear springs from the supplier Jonas Woodhead & Sons Ltd.7th Jun 1920Box 42 \ 3  Scan105
Retrofitting of shock dampers versus perfecting the springs and springing on existing cars.8th Jun 1920Box 42 \ 3  Scan106
Visit report to supplier Jonas Woodhead & Sons Ltd. concerning the production and testing of front and rear springs.14th Jun 1920Box 42 \ 3  Scan107
Proposal for Woodhead's to test repaired and re-built springs.14th Jun 1920Box 42 \ 3  Scan108
Visit from Jonas Woodhead & Sons Ltd. to discuss rear and front spring design and supply.18th Jun 1920Box 42 \ 3  Scan109
Order for rear springs of 2000 and 2100 poundage and requesting two additional springs to be produced to drawing N.391.16th Jul 1920Box 42 \ 3  Scan110
Correspondence regarding an order for road springs for Rolls-Royce of America Inc., noting delays and pattern issues for rear springs.6th Aug 1920Box 42 \ 3  Scan111
Discussion on reverting to a pre-war design for rear road springs and the approval of a new spring clip.11th Aug 1920Box 42 \ 3  Scan112
Confirming the manufacturing details of chassis front springs from Jonas Woodhead & Sons Ltd.18th Aug 1920Box 42 \ 3  Scan113
Design and manufacturing of chassis rear road springs.19th Aug 1920Box 42 \ 3  Scan114
Cover note forwarding correspondence with Jonas Woodhead & Sons Ltd. regarding rear springs for print F.7973.6th Sep 1920Box 42 \ 3  Scan115
Letter to supplier Jonas Woodhead & Sons Ltd. regarding the specifications, delivery, and pricing for rear springs.2nd Sep 1920Box 42 \ 3  Scan116
Letter to Jonas Woodhead & Sons Ltd. regarding the preference for box pattern clips for new pattern (F7973) rear springs.2nd Sep 1920Box 42 \ 3  Scan117
Letter from supplier Jonas Woodhead & Sons Ltd. regarding the specifications of rear springs.3rd Sep 1920Box 42 \ 3  Scan118
Correspondence with Jonas Woodhead & Sons Ltd. regarding a preference for a pre-war form of parabolic shearing for rear springs.8th Sep 1920Box 42 \ 3  Scan119
Claim from Jonas Woodhead & Sons, Ltd. for specially made rear and front springs and associated costs.17th Sep 1920Box 42 \ 3  Scan120
Correcting the quantity of rear springs delivered by Jonas Woodhead & Sons Ltd and the updated total cost.22th Sep 1920Box 42 \ 3  Scan121
Agreeing to an extra payment of £150 to Jonas Woodhead & Sons Ltd. for experimental springs.4th Oct 1920Box 42 \ 3  Scan122
Copy of a letter from J. Woodhead & Sons Ltd. regarding a new rear spring sent for inspection.15th Oct 1920Box 42 \ 3  Scan123
Testing of rustless chassis springs from Jonas Woodhead & Sons Ltd.21th Oct 1920Box 42 \ 3  Scan124
Querying future design specifications for chassis front springs on behalf of supplier Jonas Woodhead & Sons Ltd.21th Oct 1920Box 42 \ 3  Scan125
Specifications for front and rear chassis springs in response to a letter from Messrs Woodhead.22th Nov 1920Box 42 \ 3  Scan126
Objecting to a sample from Messrs. Woodhead showing riveting instead of bolts for fastening clips to spring plates, citing strength issues.12th Nov 1920Box 42 \ 3  Scan127
Comparing the cost implications of revised prices for different road spring patterns from Jonas Woodhead & Sons Ltd.17th Nov 1920Box 42 \ 3  Scan128
Use of square versus round edge steel for chassis springs with supplier Jonas Woodhead & Sons.26th Nov 1920Box 42 \ 3  Scan129
Letter from a supplier discussing the material for front and rear springs, offering a cost saving and declining a request to use flat material.25th Nov 1920Box 42 \ 3  Scan130
Communication regarding instructions given to Jonas Woodhead & Sons Ltd. for chassis front and rear springs.30th Nov 1920Box 42 \ 3  Scan131
Letter to a supplier discussing the material specifications for front and rear springs and authorising production.30th Nov 1920Box 42 \ 3  Scan132
Confirming an agreement with Jonas Woodhead & Sons to change the material for rear springs to round edge, slightly concave.3rd Dec 1920Box 42 \ 3  Scan133
Despatch and testing of Rustless Chassis Springs from supplier Jonas Woodhead & Sons Ltd.15th Feb 1921Box 42 \ 3  Scan134
Laboratory analysis comparing the chemical composition of an American spring and a Woodhead's spring.11th Aug 1921Box 42 \ 3  Scan135
Heat treatment issues for front and rear road springs with supplier Woodheads and proposing alternative suppliers.5th Oct 1921Box 42 \ 3  Scan136
Notification regarding short Centre Bolts for Goshawk II Front Springs, requiring temporary replacements.18th Oct 1921Box 42 \ 3  Scan137
Requirement for various nuts and bolts for the Goshawk II front and rear springs.18th Oct 1921Box 42 \ 3  Scan138
The testing of Woodhead springs with recommendations for poundages and future use.2nd Feb 1922Box 42 \ 3  Scan139
Copy of a letter from J. Woodhead & Sons Ltd. regarding a set of springs sent for a bumping test.6th Feb 1922Box 42 \ 3  Scan140
Query regarding the test results for galvanised front springs supplied by Jonas Woodhead & Sons Ltd.21th Jun 1922Box 42 \ 3  Scan141
Examination of a failed road spring from chassis 1-EX, indicating excessive hardness.5th Jul 1922Box 42 \ 3  Scan142
Letter concerning the replacement of a faulty front spring plate for Chassis 1-EX.2nd Aug 1922Box 42 \ 3  Scan143
Test data for Woodheads rear road springs showing weight applied and released.16th Mar 1923Box 42 \ 3  Scan144
The dispatch of front and rear springs to the stores.1st Aug 1923Box 42 \ 3  Scan145
Clearance measurements between the tube and rubber buffer on a 4.EX car.30th Aug 1923Box 42 \ 3  Scan146
High percentage of front spring breakages on the 40/50 postwar chassis and communications with the supplier.6th Nov 1923Box 42 \ 3  Scan147
Report comparing prewar and postwar spring breakages, fractures, and manufacturing processes.1st Nov 1923Box 42 \ 3  Scan148
Proposal to increase the strength of front springs to reduce breakages for both home and colonial service.6th Nov 1923Box 42 \ 3  Scan149
The dispatch and testing of new front spring plates made from Silico Manganese steel for the 40/50 chassis.30th Jan 1924Box 42 \ 3  Scan150
Receipt and testing of experimental Silico-Manganese steel road spring plates from Messrs. Woodhead & Sons.4th Feb 1924Box 42 \ 3  Scan151
Load diagram for a Woodhead's rear spring used on 40/50 HP models, complete with clips and hoops.4th Feb 1924Box 42 \ 3  Scan152
Load diagram for a Woodhead's front spring for 40/50 HP models, showing load vs. deflection.5th Sep 1924Box 42 \ 3  Scan153
Collection and despatch of Woodheads Springs for a 40/50 HP chassis.5th Sep 1924Box 42 \ 3  Scan154
The bump testing of Woodheads road springs.11th Sep 1924Box 42 \ 3  Scan155
Compromise on front spring design, discussing stiffness, plate thickness, and testing.13th Sep 1924Box 42 \ 3  Scan156
Delivery schedules and specifications for front springs from suppliers Woodhead and Firth for the 'U' Series 40/50 HP Chassis.22th Sep 1924Box 42 \ 3  Scan157
Receipt and allocation of new front axle springs from Jonas Woodhead & Sons Ltd.22th Sep 1924Box 42 \ 3  Scan158
An urgent requirement for clips, sheaths and gaiters to proceed with testing Woodhead springs for a Press Demonstration car.29th Sep 1924Box 42 \ 3  Scan159
Criticisms of a cabriolet's springing, identifying issues with friction and stiffness.3rd Oct 1924Box 42 \ 3  Scan160
Modifications to the thinleaf type front springs based on a sample from Woohead.6th Oct 1924Box 42 \ 3  Scan161
10,000-mile test log for a Landaulet 9.P.K. with stiffer front road springs.6th Oct 1924Box 42 \ 3  Scan162
Test report for a 10,000-mile trial on Woodhead's 20% stiffer front road springs for an open touring car.19th Nov 1924Box 42 \ 3  Scan163
10,000-mile test report on Woodheads' stiffer springs for an Open Touring car, model 98 NK.19th Nov 1924Box 42 \ 3  Scan164
Analysis of a bump test on Woodhead springs, detailing failures and suggesting design improvements.16th Oct 1924Box 42 \ 3  Scan165
Continued memo discussing modifications to a tapering component.10th Oct 1924Box 42 \ 3  Scan166
The successful 10,000-mile test of Woodhead 20% stiffer front springs for 40/50 HP cars.10th Oct 1924Box 42 \ 3  Scan167
Reporting the mileage status of ongoing tests on Woodhead front road springs in France.5th Nov 1924Box 42 \ 3  Scan168
On the results of tests of Woodhead front road springs in France.10th Nov 1924Box 42 \ 3  Scan169
The road testing of 12 1/4% thin leaf Woodhead springs in France.17th Nov 1924Box 42 \ 3  Scan170
Requesting the return of a standardisation sheet for four-wheel brakes using Woodheads springs.20th Nov 1924Box 42 \ 3  Scan171
Tests on 12 1/2% thin leaf Woodhead springs in France following consistent failures.20th Nov 1924Box 42 \ 3  Scan172
Covering memo arranging a meeting to discuss a copied memo concerning a Woodhead spring replacement programme.22th Nov 1924Box 42 \ 3  Scan173
10,000-mile test of Woodhead thin leaf springs in France.30th Nov 1924Box 42 \ 3  Scan174
Comparison of a front spring fitted to a Springfield chassis with a Woodhead spring.21th Jul 1925Box 42 \ 3  Scan175
Particulars and comparison of front springs for American Chassis No S-167-MK.17th Jul 1925Box 42 \ 3  Scan176
Blank document page with a company stamp.20th Jul 1925Box 42 \ 3  Scan177
Inquiring about the manufacturing accuracy and heat treatment of American springs compared to Woodhead springs.24th Jul 1925Box 42 \ 3  Scan178
Preparation of drawings for Woodhead Self Shock Absorbing Springs for the 40/50 HP chassis.24th Nov 1925Box 42 \ 3  Scan179
Letter and drawings for 40/50 HP Chassis front road springs from Jonas Woodhead & Sons Ltd.27th Nov 1925Box 42 \ 3  Scan180
The testing and failure of special front springs from Messrs. Woodheads.23th Feb 1926Box 42 \ 3  Scan181
Test report on the failure of Woodhead's 8-clip type front road springs.23th Feb 1926Box 42 \ 3  Scan182
Testing special Woodhead front road springs.25th Feb 1926Box 42 \ 3  Scan183
Graph and data tables comparing the load vs. deflection of standard and special front springs.23th Feb 1926Box 42 \ 3  Scan184
Blank document with a red ink stamp from the Print Room.23th Feb 1926Box 42 \ 3  Scan185
Graph and data tables comparing the deflection under load for a standard front spring versus a Woodhead special front spring.23th Feb 1926Box 42 \ 3  Scan186
The reverse of a document showing a handwritten reference number and a red ink date stamp.23th Feb 1926Box 42 \ 3  Scan187
The breakage of Woodhead's 8 Clip Type front springs.26th Feb 1926Box 42 \ 3  Scan188
Test report on Woodhead front springs, evaluating durability and anti-wobbling characteristics.26th Feb 1926Box 42 \ 3  Scan189
Preliminary impression on the performance of new springs compared to standard ones, specifically regarding tyre types and brake torque.1st Mar 1926Box 42 \ 3  Scan190
The chemical analysis and physical properties of Silico-Manganese steel for Axle Springs.1st Mar 1926Box 42 \ 3  Scan191
Differences in effect and construction between special Woodhead springs and conventional front road springs.16th Mar 1926Box 42 \ 3  Scan192
Returning broken front springs to Woodhead's for repair and fitting of new leaves.30th Mar 1926Box 42 \ 3  Scan193
And comparing different suspension schemes, including front springs, rebound leaves, and shock dampers.30th Mar 1926Box 42 \ 3  Scan194
Request to Messrs. Woodhead to manufacture a pair of front springs to a specific experimental specification.1st Apr 1926Box 42 \ 3  Scan195
The failure of Woodhead springs during testing and a request for their return to the manufacturer for replacement.16th Apr 1926Box 42 \ 3  Scan196
Request for a modified pair of rear springs for an experimental car, with specifications for them to be weaker and have an increased camber.21th Apr 1926Box 42 \ 3  Scan197
Specification sheet for a spring, detailing its dimensions and load characteristics.21th Apr 1926Box 42 \ 3  Scan198
Hand-drawn sketch with dimensions for a spring eye and rebound clip on a spring.10th Aug 1926Box 42 \ 3  Scan199
Results of torsion tests on front springs.10th Aug 1926Box 42 \ 3  Scan200


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