| Description | Date | Identifier | |
| Blueprint detailing the design and various cross-sections of an automatic shock absorber. | 1st Jan 1932 | Box 152 \ 2 scan0142 | |
| Order for Bentley V parts, specifically neoprene and rubber-coated gland rings. | 24th Jun 1939 | Box 152 \ 2 scan0143 | |
| Letter to The British Tyre & Rubber Co.Ltd. confirming an order for various rubber and neoprene gland rings. | 24th Jun 1939 | Box 152 \ 2 scan0144 | |
| Letter from consulting engineers regarding blueprints and test results for a Shock Absorber and Anti-Rattle Clevis. | 27th Jun 1939 | Box 152 \ 2 scan0145 | |
| Results of stress tests conducted on a brake rod clevis. | 18th Jan 1939 | Box 152 \ 2 scan0146 | |
| Material composition and heat treatment possibilities related to hydrogen brazing. | 29th Jun 1939 | Box 152 \ 2 scan0147 | |
| Letter to Vandervell Products Ltd. requesting an estimate and advice for replacing bushes in a shock damper casing. | 1st Jul 1939 | Box 152 \ 2 scan0148 | |
| Enquiry to Accles & Pollock Ltd. about the accuracy limits for casting steel tubes. | 3rd Jul 1939 | Box 152 \ 2 scan0149 | |
| Order for 8 springs to specification EXS.1462. | 4th Jul 1939 | Box 152 \ 2 scan0150 | |
| Letter from a supplier regarding an enquiry for steel tubing, detailing standard tolerances. | 4th Jul 1939 | Box 152 \ 2 scan0151 | |
| Letter from Vandervell Products Ltd. regarding recommendations for a Thrust Washer. | 10th Jul 1939 | Box 152 \ 2 scan0152 | |
| Letter to Vandervell Products Ltd. discussing a technical recommendation for a thrust washer. | 12th Jul 1939 | Box 152 \ 2 scan0153 | |
| Letter to Gordon Armstrong Patent Suspension Co. Ltd. regarding a shock damper suggestion for Bentley. | 18th Jul 1939 | Box 152 \ 2 scan0154 | |
| Letter to Messrs. Gordon Armstrong Patent Suspension Co. Ltd. regarding a meeting to critique a damper. | 18th Jul 1922 | Box 152 \ 2 scan0155 | |
| Covering order for B.V. Shock Damper Bushes from Vandervell Products Ltd. | 19th Jul 1939 | Box 152 \ 2 scan0156 | |
| Letter to Vandervell Products Ltd. regarding an order and price request for Clevite Bushes and washers. | 19th Jul 1939 | Box 152 \ 2 scan0157 | |
| Request to create drawings for adapting Bentley V. front shock dampers using Vandervell bushes and washers. | 20th Jul 1939 | Box 152 \ 2 scan0158 | |
| Requesting a covering order for Shock Damper Gland Rings from The British Tyre & Rubber Co.Ltd. | 14th Aug 1939 | Box 152 \ 2 scan0159 | |
| Letter to Armstrong's Patents Co. Ltd. regarding the testing of a suggested damper, comparing it to an Oyston valve. | 17th Aug 1939 | Box 152 \ 2 scan0160 | |
| Letter from Armstrong's Patents Co. Ltd. regarding the selection of a suitable valve for shock absorbers. | 18th Aug 1939 | Box 152 \ 2 scan0161 | |
| Letter to Cloudsley Engineering regarding disappointing results from testing Oyston valves and requesting modifications. | 24th Aug 1939 | Box 152 \ 2 scan0162 | |
| The return of two Luvax dampers fitted with special valves by the Cloudsley Eng. Co. | 19th Sep 1939 | Box 152 \ 2 scan0163 | |
| Requesting the issuance of an official order for rubber washers. | 22th Sep 1939 | Box 152 \ 2 scan0164 | |
| Letter to Armstrong's Patents Co. discussing the fitting of pistons for shock absorbers. | 8th Jan 1940 | Box 152 \ 2 scan0165 | |
| Letter from The Armstrong's Patents Co. Ltd. discussing piston clearance and movement. | 9th Jan 1940 | Box 152 \ 2 scan0166 | |
| Letter discussing damper and piston test results with suggestions for modifications. | 13th Jan 1940 | Box 152 \ 2 scan0167 | |
| Page 2 of a letter discussing the application of a damper and modifications required. | 13th Jan 1940 | Box 152 \ 2 scan0168 | |
| Diagram showing the performance characteristics of an aluminium damper with 1 1/2 diameter pistons at different temperatures. | 9th Feb 1940 | Box 152 \ 2 scan0169 | |
| Dispatch note requesting the sending of a Gordon Armstrong shock damper to Messrs. Armstrong Patents Co. Ltd. | 15th Jan 1940 | Box 152 \ 2 scan0170 | |
| Requesting an official order for 12 shock damper gland rings from the British Tyre & Rubber Co. | 18th Jan 1940 | Box 152 \ 2 scan0171 | |
| Fitting of Gordon Armstrong dampers to a rear axle, including design alternatives and rebound straps. | 22th Jan 1940 | Box 152 \ 2 scan0172 | |
| Requesting an official order for two pairs of pistons for a D.A.S.10 shock damper from the Armstrong Patents Co. | 26th Jan 1940 | Box 152 \ 2 scan0173 | |
| Secret memo regarding the application of Gordon Armstrong rear shock dampers. | 26th Jan 1940 | Box 152 \ 2 scan0174 | |
| Fitting of Gordon Armstrong shock absorbers and rebound straps to Senior range cars. | 12th Feb 1940 | Box 152 \ 2 scan0175 | |
| Letter to Armstrong Patents Co. Ltd. concerning test results and leakage issues with a D.A.S. 10 damper. | 16th Feb 1940 | Box 152 \ 2 scan0176 | |
| Request to change a component's clearance to an interference fit and to create a sample for testing. | 16th Feb 1940 | Box 152 \ 2 scan0177 | |
| Internal request to place an order with Armstrong Patents Co. Ltd. for pistons and a sealing piece. | 16th Feb 1940 | Box 152 \ 2 scan0178 | |
| Requesting an official order for one large Armstrong Damper for testing purposes. | 5th Mar 1940 | Box 152 \ 2 scan0179 | |
| Letter to The Armstrong Patent Co. Ltd. regarding the testing of pistons, sealing pieces, and dampers. | 5th Mar 1940 | Box 152 \ 2 scan0180 | |
| Letter from Armstrong's Patents Co. Ltd. confirming the dispatch of a large damper. | 7th Mar 1940 | Box 152 \ 2 scan0181 | |
| Modifications to Gordon Armstrong shock dampers for the Senior Range. | 8th Mar 1940 | Box 152 \ 2 scan0182 | |
| Providing blueprints for a Gordon Armstrong shock damper for the Ripplet Chassis. | 29th Mar 1940 | Box 152 \ 2 scan0183 | |
| Servicing of Bentley V. front dampers. | 1st Apr 1940 | Box 152 \ 2 scan0184 | |
| Pricing for rolled strip Vandervell bearings for front Bentley V shock absorbers. | 4th Apr 1940 | Box 152 \ 2 scan0185 | |
| Letter evaluating a third-party shock absorber design and its claimed performance. | 8th Apr 1940 | Box 152 \ 2 scan0186 | |
| Page 2 of a letter regarding approaching Austins about a valveless damper. | 8th Apr 1940 | Box 152 \ 2 scan0187 | |
| Letter providing a critique of shock absorber literature, discussing damping frequencies and roll. | 9th Apr 1940 | Box 152 \ 2 scan0188 | |
| Page 2 of a letter declining a damper for larger cars but suggesting it might be suitable for small cars. | 9th Apr 1940 | Box 152 \ 2 scan0189 | |
| Alteration notice for a front shock damper, detailing deleted and added parts. | 17th Apr 1940 | Box 152 \ 2 scan0190 | |
| Instructions and part lists for the fitment of Gordon Armstrong rear shock dampers. | 19th Apr 1940 | Box 152 \ 2 scan0191 | |
| Revisions to the front shock damper for the Ripplet Chassis, detailing the supply of blueprints for a new aluminium buffer support. | 18th Apr 1940 | Box 152 \ 2 scan0192 | |
| Instructions for the L.H. Silver Phantom front shock damper, specifying required modifications. | 19th Apr 1940 | Box 152 \ 2 scan0193 | |
| LH Silver Phantom Rear Shock Damper, including two blueprints. | 19th Apr 1940 | Box 152 \ 2 scan0194 | |
| Specifying which cars should be fitted with the anti-squawk Valve Spring Seat for the front dampers. | 3rd May 1940 | Box 152 \ 2 scan0195 | |
| Modifications for front dampers and rear springs on future cars including Ripplet and Rippletto. | 3rd May 1940 | Box 152 \ 2 scan0196 | |
| Letter to The Armstrong's Patents Co. requesting drawings and specifications for rubber bushes used in shock damper links. | 14th May 1940 | Box 152 \ 2 scan0197 | |
| Letter to Armstrong Patents Co. Ltd. regarding the fitting of shock damper levers. | 16th May 1940 | Box 152 \ 2 scan0198 | |
| Requesting an official order be sent to Armstrong Patents Co. for four large shock dampers. | 16th May 1940 | Box 152 \ 2 scan0199 | |
| Letter from The Armstrong's Patents Co. Ltd. regarding rubber bushes and drawings of mountings. | 17th May 1940 | Box 152 \ 2 scan0200 | |
| Letter from a supplier arranging the supply of a set of shock absorbers fitted with custom levers. | 20th May 1940 | Box 152 \ 2 scan0201 | |
| Letter from Armstrong's Patents Co. Ltd. requesting clarification on shock absorber specifications. | 22th May 1940 | Box 152 \ 2 scan0202 | |
| Modified shock damper leaks and replacement parts for the B.V. chassis. | 23th May 1940 | Box 152 \ 2 scan0203 | |
| Letter of thanks to The Armstrong's Patent Co. for providing particulars on their rubber brushes. | 24th May 1940 | Box 152 \ 2 scan0204 | |
| Telegram to Armstrong Patents regarding a requirement for two pairs of dampers. | 24th May 1940 | Box 152 \ 2 scan0205 | |
| Letter to a supplier confirming an order for two pairs of dampers and providing assembly instructions. | 24th May 1940 | Box 152 \ 2 scan0206 | |
| Letter from Armstrong's Patents Co. Ltd. acknowledging receipt of a letter and drawing RF. 730/1. | 27th May 1940 | Box 152 \ 2 scan0207 | |
| Cover page for a development work report on vehicle frames, suspension, and testing. | 1st May 1940 | Box 152 \ 2 scan0208 | |
| Analysis of vehicle frame stiffness, modifications, and torsional figures for different models. | 1st May 1940 | Box 152 \ 2 scan0209 | |
| The development, issues, and proposed modifications for front shock dampers. | 1st May 1940 | Box 152 \ 2 scan0210 | |
| Damper performance, testing, potential replacements, and comparisons with competitor parts. | 1st May 1940 | Box 152 \ 2 scan0211 | |
| The development and testing of front suspension systems, addressing issues of noise, material selection, and component failures. | 1st May 1940 | Box 152 \ 2 scan0212 | |
| Modifying bump buffers to prevent issues with coil spring compression. | 1st May 1940 | Box 152 \ 2 scan0213 | |
| Technical report on rear suspension, detailing issues with interleaving materials, spring specifications, and the use of rebound straps. | 1st May 1940 | Box 152 \ 2 scan0214 | |
| Procedures for conducting weighbridge, torsion, and suspension tests on new cars. | 23th May 1940 | Box 152 \ 2 scan0215 | |
| Modified shock damper leak parts and their applicability. | 23th May 1940 | Box 152 \ 2 scan0216 | |
| Follow-up memo requesting an official order for two pairs of Armstrong D.A.S. 12/4 Shock dampers. | 6th Jun 1940 | Box 152 \ 2 scan0217 | |
| Request to send an official order to Armstrong Patents Co. for a pair of zero clearance pistons and a sealing piece. | 6th Jul 1940 | Box 152 \ 2 scan0218 | |
| Letter to The Armstrong Patents Co. Ltd. regarding the testing of shock damper components and a request for new parts with modified specifications. | 6th Jul 1940 | Box 152 \ 2 scan0219 | |
| Letter from Armstrong's Patents Co. Ltd. requesting dimensions for zero clearance pistons or the return of a casting for fitting. | 9th Jul 1940 | Box 152 \ 2 scan0220 | |
| Letter to The Armstrong Patents Co. regarding the dispatch of a damper for modification and further testing. | 12th Jul 1940 | Box 152 \ 2 scan0221 | |
| Telegram to Armstrong Patents concerning the despatch of dampers and piston rings. | 11th Jul 1940 | Box 152 \ 2 scan0222 | |
| Urgent request to despatch an Armstrong Damper to Armstrong Patents Co. for modification. | 11th Jul 1940 | Box 152 \ 2 scan0223 | |
| Letter from Armstrong's Patents Co. confirming the dispatch of a modified shock absorber. | 15th Jul 1940 | Box 152 \ 2 scan0224 | |
| Potential use and testing of spiral gears for the servo drive on all cars, particularly the Wraith. | 26th Apr 1938 | Box 152 \ 2 scan0225 | |
| The manufacture of 12 Servo Star Springs with specific heat setting instructions. | 9th Jun 1938 | Box 152 \ 2 scan0226 | |
| Request for the manufacture of two copper pipes for a servo test rig. | 21th Jun 1938 | Box 152 \ 2 scan0227 | |
| Order to Messrs. Ferodo Ltd. for six urgently required servo friction discs made from R.A.D.13 material. | 24th Jun 1938 | Box 152 \ 2 scan0228 | |
| Modifications to the servo linkage for simplification and economy. | 23th Aug 1938 | Box 152 \ 2 scan0229 | |
| Requesting the design of a new linkage for a universal servo for hydraulic brakes, specifically for the Wraith 80 model. | 21th Sep 1938 | Box 152 \ 2 scan0230 | |
| Blueprint and part changes for the Servo Motor Mechanism on Bentley B.50 and B.60 chassis. | 3rd Oct 1938 | Box 152 \ 2 scan0231 | |
| The cost and performance testing of an aluminium servo worm wheel for a Bentley III servo drive. | 14th Oct 1938 | Box 152 \ 2 scan0232 | |
| Pitting on a servo worm wheel after a 100-hour test on a Bentley Dynamometer Chassis. | 29th Sep 1938 | Box 152 \ 2 scan0233 | |
| Photograph of a Servo Worm Gear from a Bentley Dynamometer Chassis after a 100-hour test. | 6th Dec 1938 | Box 152 \ 2 scan0234 | |
| Request to issue an official order to Ferodo Ltd. for servo friction discs and linings. | 6th Dec 1938 | Box 152 \ 2 scan0235 | |
| Letter from the Experimental Department to Ferodo Ltd. ordering servo discs and responding to previous correspondence. | 7th Dec 1938 | Box 152 \ 2 scan0236 | |
| Re-issuing document PD.320 with modifications to the B.V. and B.50 servo to improve the oil seal. | 14th Dec 1938 | Box 152 \ 2 scan0237 | |
| Issue with servo spring plates on B.V. & B.50 models, requesting a temporary modification. | 30th Dec 1938 | Box 152 \ 2 scan0238 | |
| Order of servo friction discs from Ferodo Ltd. for experimental purposes. | 27th Jan 1939 | Box 152 \ 2 scan0239 | |
| Water ingress into the B.V. & B.50 servo motor, detailing the causes and proposed solutions. | 30th Jan 1939 | Box 152 \ 2 scan0240 | |
| Use of an interference fit for an oil seal. | 30th Jan 1939 | Box 152 \ 2 scan0241 | |
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