| Description | Date | Identifier | |
| Design change for a pump piston fixing in a damper governor control. | 30th Oct 1933 | Box 151 \ 2 scan0110 | |
| Shock damper temperature tests conducted on a 20-EX car, with and without a heat shield. | 8th Nov 1933 | Box 151 \ 2 scan0111 | |
| Alterations to shock damper casings to prevent distortion and proposing further design improvements. | 10th Nov 1933 | Box 151 \ 2 scan0112 | |
| Figures showing gauge pressures and corresponding ball pin loads for four Type HT.3 Tele-Control Hartford shock dampers. | 16th Nov 1933 | Box 151 \ 2 scan0113 | |
| Production alterations to the governor controlled shock damper valve clearances. | 21th Nov 1933 | Box 151 \ 2 scan0114 | |
| Testing procedures for the governor control shock dampers on the 40/50 HP model. | 29th Nov 1933 | Box 151 \ 2 scan0115 | |
| Test procedures and specifications for a vehicle's governor unit, dampers, and pressure control system. | 29th Nov 1933 | Box 151 \ 2 scan0116 | |
| Instructions for erecting and testing a shock damper bellows control unit. | 29th Nov 1933 | Box 151 \ 2 scan0117 | |
| Cross-section drawing of a solid high-pressure (HP) valve for testing HP and L.P. chambers. | 29th Nov 1933 | Box 151 \ 2 scan0118 | |
| Testing and implementing a new main release valve for the governor unit. | 11th Dec 1933 | Box 151 \ 2 scan0119 | |
| Requesting the creation of a shock damper indicator for a test rig. | 11th Dec 1933 | Box 151 \ 2 scan0120 | |
| Requesting a material change for the shock damper bellows end piece (F.85395) due to porosity issues with the current material. | 14th Dec 1933 | Box 151 \ 2 scan0121 | |
| Investigation report on shock damper valve tests for the F.85641 valve assembly, addressing a leakage complaint. | 18th Dec 1933 | Box 151 \ 2 scan0122 | |
| Request for the assembly and production of modified shock damper valves to address valve leaks. | 21th Dec 1933 | Box 151 \ 2 scan0123 | |
| Investigation into a loose damping disc on Shock Damper Valve Assembly F.85641. | 18th Dec 1933 | Box 151 \ 2 scan0124 | |
| Modification to speedometer cables to create a deliberate weak point to prevent gearbox damage. | 27th Dec 1933 | Box 151 \ 2 scan0125 | |
| Failure of a rear shock damper ball end fixing, attributing it to incorrect assembly and a design flaw, and proposing a new forged bracket design. | 27th Dec 1933 | Box 151 \ 2 scan0126 | |
| Testing and proposed modifications to the Phantom II damper control system on chassis 22-EX. | 28th Dec 1933 | Box 151 \ 2 scan0127 | |
| Modifications to a governor for experimental trials concerning ride harshness and damping. | 28th Dec 1933 | Box 151 \ 2 scan0128 | |
| Graph showing the variation of damper control pressure with road speed. | 30th Nov 1933 | Box 151 \ 2 scan0129 | |
| Test report on shock damper valve 'hat' clearance and its effect on operational quietness. | 1st Jan 1934 | Box 151 \ 2 scan0130 | |
| Use of smaller control bellows for front dampers to reduce front end damping. | 3rd Jan 1934 | Box 151 \ 2 scan0131 | |
| Loss of damping in shock dampers at high frequency oscillation. | 1st Jan 1934 | Box 151 \ 2 scan0132 | |
| Request to issue an order for the Packless Gland Co. to build 12 Shock Damper Glands. | 1st Jan 1934 | Box 151 \ 2 scan0133 | |
| Urgent request to order 12 Bellows from the Packless Gland Co. and to check lead times for a larger production order of 200. | 5th Jan 1934 | Box 151 \ 2 scan0134 | |
| Parts sent to the 'Packless Gland Company' for the assembly of 12 Gland assemblies. | 22th Jan 1934 | Box 151 \ 2 scan0135 | |
| Test report comparing pull and push forces of 'Packless Gland Co.' and 'Smith's Standard' calorstats at various temperatures. | 9th Jan 1934 | Box 151 \ 2 scan0136 | |
| Test report and critique of controlled shock dampers on the 22-EX experimental car, noting a hard ride at low speeds. | 11th Jan 1934 | Box 151 \ 2 scan0137 | |
| Proposal to reduce front shock damping by 50% and seeking expert opinion on the matter. | 12th Jan 1934 | Box 151 \ 2 scan0138 | |
| Letter to The Packless Gland Co. Ltd. discussing test results and requirements for thermostats, bellows, and glands. | 11th Jan 1934 | Box 151 \ 2 scan0139 | |
| Letter discussing the necessity of a starting handle on a Bentley. | 11th Jan 1934 | Box 151 \ 2 scan0140 | |
| Letter from a supplier discussing a dimensional discrepancy on bellows parts for order 57880, referencing drawing HS1077. | 11th Jan 1934 | Box 151 \ 2 scan0141 | |
| Shock damper tests investigating the relationship between external pressure and ball pin load. | 11th Jan 1934 | Box 151 \ 2 scan0142 | |
| Graph of shock damper test results showing the relation between external pressure and ball pin load. | 10th Jan 1934 | Box 151 \ 2 scan0143 | |
| Graph from shock damper tests showing the relation between external pressure and ball pin load. | 11th Jan 1934 | Box 151 \ 2 scan0144 | |
| Letter to The Packless Gland Co. Ltd. regarding specifications for a flexible gland spring. | 15th Jan 1934 | Box 151 \ 2 scan0145 | |
| Letter from The Packless Gland Co. Ltd. regarding thermostats, bellows, glands and a bellows assembly. | 15th Jan 1934 | Box 151 \ 2 scan0146 | |
| Letter from a supplier requesting an increase in the allowable outside diameter tolerance for bellows on Shock Damper Valves. | 15th Jan 1934 | Box 151 \ 2 scan0147 | |
| Letter from The Packless Gland Co. Ltd. seeking confirmation on the assumption that the internal diameter of the bellows is not important. | 16th Jan 1934 | Box 151 \ 2 scan0148 | |
| Letter from the Experimental Department to The Packless Gland Co.Ltd. regarding manufacturing difficulties with bellows F.85395. | 16th Jan 1934 | Box 151 \ 2 scan0149 | |
| Letter from The British Thermostat Co. Ltd. requesting clarification on thermostat test data and setup. | 16th Jan 1934 | Box 151 \ 2 scan0150 | |
| Diagram illustrating the operational forces and positions of a thermostat-controlled shutter mechanism. | 20th Jan 1934 | Box 151 \ 2 scan0151 | |
| Letter from a supplier discussing bellows specifications, tolerances, and production inquiries. | 20th Jan 1934 | Box 151 \ 2 scan0152 | |
| Table detailing variations in the inside and outside diameters of bellows part F.100773 from two different makers. | 17th Jan 1934 | Box 151 \ 2 scan0153 | |
| Letter from The Packless Gland Co. Ltd. regarding rejected bellows units that did not meet specified limits. | 17th Jan 1934 | Box 151 \ 2 scan0154 | |
| Alteration to the front shock absorbers on car 22-EX to improve springing control. | 17th Jan 1934 | Box 151 \ 2 scan0155 | |
| Letter to The Packless Gland Co. Ltd. regarding the urgent dispatch of bellows units and issues with damper load variations. | 18th Jan 1934 | Box 151 \ 2 scan0156 | |
| Letter regarding the accuracy of bellows and a request to increase drawing limits by 600%. | 18th Jan 1934 | Box 151 \ 2 scan0157 | |
| Telegram dispatch request to Packless Gland Co. for two bellows. | 18th Jan 1934 | Box 151 \ 2 scan0158 | |
| Urgent internal order request for 6 Bellows units similar to drawing F.85395. | 18th Jan 1934 | Box 151 \ 2 scan0159 | |
| Shock damper tests performed on a 40/50 model after 100 hours. | 23th Jan 1939 | Box 151 \ 2 scan0160 | |
| Report from the shock damper file on the dimensional variations of bellows, part number F.100773. | 20th Jan 1934 | Box 151 \ 2 scan0161 | |
| Letter arranging a meeting with The Packless Gland Co. Ltd. to discuss producing Bellows to drawing limits. | 20th Jan 1934 | Box 151 \ 2 scan0162 | |
| Technical memorandum discussing the testing and performance of controllable shock dampers on a 40/50 HP car. | 25th Jan 1934 | Box 151 \ 2 scan0163 | |
| Test drive of car 104-MY to evaluate Controllable Shock Dampers for the 40/50 HP model. | 26th Jan 1934 | Box 151 \ 2 scan0164 | |
| Sending three radiator thermostats to the Packless Gland Co. for modification. | 26th Jan 1934 | Box 151 \ 2 scan0165 | |
| Request to test complete cars fitted with Controllable Shock Dampers, particularly low rating sprung models. | 26th Jan 1934 | Box 151 \ 2 scan0166 | |
| Arrangement to test a chassis fitted with controllable shock dampers. | 30th Jan 1934 | Box 151 \ 2 scan0167 | |
| Arranging a test of controllable shock dampers on a 168-PY chassis. | 31th Jan 1934 | Box 151 \ 2 scan0168 | |
| Letter from The Packless Gland Co. Ltd. regarding specifications and modifications for Shock Absorber Bellows. | 2nd Feb 1934 | Box 151 \ 2 scan0169 | |
| Letter from The Packless Gland Co. Ltd. discussing a thermograph instrument and radiator thermostats. | 10th Sep 1933 | Box 151 \ 2 scan0170 | |
| Blueprint showing the specifications and dimensions of a bellows component. | 10th Sep 1933 | Box 151 \ 2 scan0171 | |
| Request to order 6 main relief valve springs, part E.86018, for the Ph.II shock damper governor unit. | 6th Feb 1934 | Box 151 \ 2 scan0172 | |
| Notification to replace a relief valve governor spring for the Phantom II and 20/25 HP chassis. | 6th Feb 1934 | Box 151 \ 2 scan0173 | |
| Letter to The Packless Gland Co. Ltd. regarding the specifications, testing, and ordering of bellows. | 8th Feb 1934 | Box 151 \ 2 scan0174 | |
| Letter requesting a by-passing thermostat and discussing the loan of a thermograph. | 8th Feb 1934 | Box 151 \ 2 scan0175 | |
| Letter to The Packless Gland Co. Ltd. regarding the design and protection of a flexible gland bellows. | 8th Feb 1934 | Box 151 \ 2 scan0176 | |
| Feedback on alterations to controllable shock dampers and the resulting effect on steering movement. | 8th Feb 1934 | Box 151 \ 2 scan0177 | |
| Internal order request for 12 bellows units. | 9th Feb 1934 | Box 151 \ 2 scan0178 | |
| Shock damper and governor unit specification for model 28-EX. | 9th Feb 1934 | Box 151 \ 2 scan0179 | |
| Letter to The Packless Gland Co. Ltd. detailing measurement inaccuracies found in a batch of Bellows Units. | 9th Feb 1934 | Box 151 \ 2 scan0180 | |
| Letter providing gauge specifications for the inside diameter of bellows and discussing faulty parts. | 9th Feb 1934 | Box 151 \ 2 scan0181 | |
| Proposed modifications to the Damper Control Pump. | 9th Feb 1934 | Box 151 \ 2 scan0182 | |
| Letter from The Packless Gland Co. Ltd. discussing a proposed guard to protect flexible gland bellows, enclosing drawing BGA. 1687. | 9th Feb 1934 | Box 151 \ 2 scan0183 | |
| Blueprint showing two schemes for a gland for shock dampers. | 9th Feb 1934 | Box 151 \ 2 scan0184 | |
| Letter from The Packless Gland Co., Ltd. regarding the testing and modification of bellows. | 9th Feb 1934 | Box 151 \ 2 scan0185 | |
| Letter from a supplier discussing the specifications and pricing of bellows and thermostats. | 10th Feb 1934 | Box 151 \ 2 scan0186 | |
| Letter from a supplier regarding bellows units failing gauge tests and discussing manufacturing limits. | 10th Feb 1934 | Box 151 \ 2 scan0187 | |
| The despatch of 4 Shock Damper Glands for modification. | 14th Feb 1934 | Box 151 \ 2 scan0188 | |
| Letter to a supplier regarding the quality control inspection and rejection of bellows units. | 14th Feb 1934 | Box 151 \ 2 scan0189 | |
| Letter to The Packless Gland Co. Ltd. regarding design modifications and issues with gland units. | 14th Feb 1934 | Box 151 \ 2 scan0190 | |
| Modifications to the Shock Damper Body F.59948 P.2. for 20/25 & Bentley models. | 14th Feb 1934 | Box 151 \ 2 scan0191 | |
| Investigating a prematurely worn shock absorber piston pad that was incorrectly fitted in a soft, unhardened state. | 21th Feb 1934 | Box 151 \ 2 scan0192 | |
| Blueprints for a new joint for the Phantom II, 20/25 HP, and Bentley chassis. | 23th Feb 1934 | Box 151 \ 2 scan0193 | |
| Instructions for producing and fitting new parts for a Phantom II chassis rear shock damper, specifically a strengthened intermediate lever. | 23th Feb 1934 | Box 151 \ 2 scan0194 | |
| Request to manufacture two pairs of rubber-loaded shock damper links for the Phantom II, as per drawing Hs.1313. | 28th Feb 1934 | Box 151 \ 2 scan0195 | |
| Brief notes for a press story on shock absorber controls. | 28th Feb 1934 | Box 151 \ 2 scan0196 | |
| Comparison of controllable shock dampers with the competitor Telecontrol Hartford system. | 1st Mar 1934 | Box 151 \ 2 scan0197 | |
| Page 2 of a technical memo detailing the damper, carburettor, and control systems. | 1st Mar 1934 | Box 151 \ 2 scan0198 | |
| Axle movement test results comparing the efficiency of Telecontrol Hartford and R.R. Hydraulic shock dampers. | 1st Mar 1934 | Box 151 \ 2 scan0199 | |
| Requesting a drawing modification for gland packing length based on experimental findings. | 1st Mar 1934 | Box 151 \ 2 scan0200 | |
| Request for information about new shock absorbers for a press announcement. | 2nd Mar 1934 | Box 151 \ 2 scan0201 | |
| Requesting to add the inside diameter dimension to the drawing for Shock Damper Bellows F.85395. | 3rd Mar 1934 | Box 151 \ 2 scan0202 | |
| Description of the controllable shock damper system and its advantages over fixed load dampers. | 3rd Mar 1934 | Box 151 \ 2 scan0203 | |
| Description of the working scheme for controllable shock dampers. | 5th Mar 1934 | Box 151 \ 2 scan0204 | |
| Description of how oil pressure in a control system varies the load on shock dampers via a metal bellows. | 5th Mar 1934 | Box 151 \ 2 scan0205 | |
| Letter to The Super Oil Seal Manfg. Co. requesting information and samples of a Patent Gland for a Shock Damper Shaft. | 6th Mar 1934 | Box 151 \ 2 scan0206 | |
| Arranging for Mr. Clark to make sketches of controllable shock absorbers and requesting a car for his arrival. | 6th Mar 1934 | Box 151 \ 2 scan0207 | |
| Fitting controllable shock dampers and reconditioning road springs on a 25 HP car. | 8th Mar 1934 | Box 151 \ 2 scan0208 | |
| Letter from Super Oil Seal Manfg. Co. regarding an enquiry for 'Perfect' Oil Seals for a shock damper shaft. | 9th Mar 1934 | Box 151 \ 2 scan0209 | |
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