| Description | Date | Identifier | |
| Standardisation sheet for a new fan, drive, and starting handle to overcome idling overheating issues. | 10th Oct 1937 | Box 113 \ 5 scan0029 | |
| Storage position of the one-piece starting handle on the Phantom III chassis. | 18th Oct 1937 | Box 113 \ 5 scan0030 | |
| Two defects with the cheapened and lightened starting handle for the Wraith, requiring correction. | 27th Oct 1937 | Box 113 \ 5 scan0031 | |
| Instruction sheet regarding the Wraith III Chassis Starting Handle, listing component tracings for revision and production. | 27th Oct 1937 | Box 113 \ 5 scan0032 | |
| The standardization and modification of the Phantom III five-blade fan and starting handle. | 27th Oct 1937 | Box 113 \ 5 scan0033 | |
| The introduction of a modified one-piece starting handle for the Phantom III 'E' series chassis. | 4th Nov 1937 | Box 113 \ 5 scan0034 | |
| Instruction regarding the accommodation of the one-piece starting handle for the Phantom III 'E' series. | 3rd Feb 1938 | Box 113 \ 5 scan0035 | |
| Request to make two Wraith starting handles for specific production chassis. | 8th Mar 1938 | Box 113 \ 5 scan0036 | |
| Wraith starting handle and spot lamp support bracket made from manganese bronze. | 15th Sep 1938 | Box 113 \ 5 scan0037 | |
| Requesting the interchange of spring drive starting-handle dogs between two Wraith III units. | 8th Nov 1938 | Box 113 \ 5 scan0038 | |
| Note concerning the starting handle and front bumper for the Silver Dawn and Silver Wraith models. | 8th Jul 1939 | Box 113 \ 5 scan0039 | |
| Visit from frame supplier Rubery Owen concerning difficulties with Wraith II and Bentley III frames. | 22th Jan 1937 | Box 113 \ 5 scan0040 | |
| Issues with welding a frame and the decision to modify the Bentley 111 frame. | 29th Jan 1937 | Box 113 \ 5 scan0041 | |
| Visit to Rubery Owen to discuss the manufacture of 25/30 HP chassis frames. | 29th Jan 1937 | Box 113 \ 5 scan0042 | |
| Meeting minutes discussing frame production changeover with supplier Rubery Owen and addressing manufacturing difficulties with the Wraith frame. | 29th Jan 1937 | Box 113 \ 5 scan0043 | |
| Frame channel and cruciform member discrepancies and instructions for investigation. | 29th Jan 1937 | Box 113 \ 5 scan0044 | |
| Frame construction defects, material choices, and pricing for the Wraith frame. | 29th Jan 1937 | Box 113 \ 5 scan0045 | |
| Recommendation to arrange a visit for Mr. A.C.H. Owen of Messrs. Rubery Owen to discuss a situation. | 29th Jan 1937 | Box 113 \ 5 scan0046 | |
| Letter to The Projectile & Engineering Co. Ltd. arranging a meeting to discuss motor frames. | 2nd Feb 1937 | Box 113 \ 5 scan0047 | |
| Letter from The Projectile & Engineering Company confirming a meeting regarding motor frames. | 3rd Feb 1937 | Box 113 \ 5 scan0048 | |
| Visit to Projectile & Engineering Co. to discuss the supply and cost of motor frames. | 8th Feb 1937 | Box 113 \ 5 scan0049 | |
| Letter to Rubery Owen Ltd. requesting the delivery date for the third experimental frame. | 16th Feb 1937 | Box 113 \ 5 scan0050 | |
| Outlining an agreement with Rubery Owens for the phased production of 25/30 HP chassis frames. | 22th Feb 1937 | Box 113 \ 5 scan0051 | |
| Visit to Messrs. Rubery Owen & Co. Ltd. to discuss the production of Wraith frames. | 15th Jun 1937 | Box 113 \ 5 scan0052 | |
| Cost estimates for a completely assembled frame and a separate quote for its individual components and manufacturing processes. | 15th Jun 1937 | Box 113 \ 5 scan0053 | |
| Modifications to the Phantom III and Bentley rear crossmembers. | 25th Jun 1937 | Box 113 \ 5 scan0054 | |
| Letter to Messrs. Rubery, Owen & Co. Ltd. requesting a cost estimate for parts for sample frames and a larger order of 1000 frames. | 29th Oct 1937 | Box 113 \ 5 scan0055 | |
| Comparative table of frame stiffness measurements for various car models and frame types. | 7th Mar 1938 | Box 113 \ 5 scan0056 | |
| Modifications to the Bentley 111 and Bentley 50 frame rear end. | 26th Apr 1938 | Box 113 \ 5 scan0057 | |
| Scheme for hand holes in the front end of the frame for Bentley 111 and Bentley 50 models. | 26th Apr 1938 | Box 113 \ 5 scan0058 | |
| Forwarding a letter from Mr. C. W. Glover concerning the measurement of frame noises in fighter aircraft. | 10th May 1938 | Box 113 \ 5 scan0059 | |
| Letter from an acoustical consultant regarding the silencing of engine exhausts. | 6th May 1938 | Box 113 \ 5 scan0060 | |
| Letter from the Experimental Department discussing chassis noise amplification and silencing problems. | 13th May 1938 | Box 113 \ 5 scan0061 | |
| Letter to Briggs Motor Bodies Ltd. requesting a quotation for a modified frame and discussing tooling and rivet options. | 20th May 1938 | Box 113 \ 5 scan0062 | |
| Scheme for temporary shock damper brackets for existing Bentley 50 and 3 frames. | 30th May 1938 | Box 113 \ 5 scan0063 | |
| Comparing the torsional strength and weight of a Jaguar frame versus a plain box section frame. | 2nd Jun 1938 | Box 113 \ 5 scan0064 | |
| Comparison of the S.S. Jaguar frame against the Bentley III frame, focusing on torsional strength and weight. | 2nd Jun 1938 | Box 113 \ 5 scan0065 | |
| Part replacement instructions for Bentley III and Bentley 50 chassis. | 23th Jun 1938 | Box 113 \ 5 scan0066 | |
| Scheme for a Bentley 3 and 50 frame, detailing an experimental flash butt welding method for the front crossmember end sockets. | 6th Jul 1938 | Box 113 \ 5 scan0067 | |
| Adjustments to frame heights and ground clearance for the B.50 and Silver Wraith models. | 15th Jul 1938 | Box 113 \ 5 scan0068 | |
| Instruction to John Thompsons to produce one Wraith replacement and two Bentley 50 frames, and a request to arrange for remaining parts to be sent. | 10th Aug 1938 | Box 113 \ 5 scan0069 | |
| The material specifications for B.3 and B.50 frames, comparing suppliers and production methods. | 26th Aug 1938 | Box 113 \ 5 scan0070 | |
| Scheme for a redesigned starting handle bearing and centre lamp bracket for Bentley 3 and 50 models. | 8th Sep 1938 | Box 113 \ 5 scan0071 | |
| Outlining the timeline for frame completion to enable production material ordering and die creation. | 23th Sep 1938 | Box 113 \ 5 scan0072 | |
| Scheme for adding stiffness to the front end of the frame for B.111, B.50 and Wraith 80 models. | 31th Oct 1938 | Box 113 \ 5 scan0073 | |
| Requesting the current usage of a portable arc welder to check power supply adequacy in the Bump House. | 9th Nov 1938 | Box 113 \ 5 scan0074 | |
| The torsional stiffness of Humber, Hillman, and Sunbeam-Talbot car frames. | 24th Nov 1938 | Box 113 \ 5 scan0075 | |
| Comparative table of frame twist data for Hillman, Humber, and Sunbeam Talbot models. | 1st Dec 1938 | Box 113 \ 5 scan0076 | |
| Proposal to consolidate frame drawings for the Bentley V, Bentley 50, and Silver Wraith models. | 1st Dec 1938 | Box 113 \ 5 scan0077 | |
| Simplification of frame drawings for the Bentley V, Bentley 50, and Silver Wraith models. | 2nd Dec 1938 | Box 113 \ 5 scan0078 | |
| Scheme for a stiffened starting handle and support bracket for Bentley 111 and 50 frames. | 3rd Dec 1938 | Box 113 \ 5 scan0079 | |
| Confirming an urgent order for various frames and requesting a cost estimate. | 5th Dec 1938 | Box 113 \ 5 scan0080 | |
| List of work and tests required for various shock damper components and systems. | 13th Dec 1938 | Box 113 \ 5 scan0081 | |
| Issues and required actions for vehicle frames. | 13th Dec 1938 | Box 113 \ 5 scan0082 | |
| Shock dampers and frames. | 13th Dec 1938 | Box 113 \ 5 scan0083 | |
| Invoice from John Thompson Motor Pressings Ltd. for welding a Bentley III Frame. | 14th Dec 1938 | Box 113 \ 5 scan0084 | |
| New scheme for the petrol tank and spare wheel mounting on a Continental B.V. frame. | 15th Dec 1938 | Box 113 \ 5 scan0085 | |
| Payment to John Thompson Ltd. for welding a B.V. frame. | 30th Dec 1938 | Box 113 \ 5 scan0086 | |
| Modification instruction for a support bracket and valance plate on Bentley 5 and 50 models. | 6th Feb 1939 | Box 113 \ 5 scan0087 | |
| Letter from the Experimental Department inquiring about a pneumatic nibbler tool for cutting sheet steel. | 8th May 1939 | Box 113 \ 5 scan0088 | |
| Letter from Broom & Wade Ltd declining to quote for a tool suitable for cutting sheet steel. | 9th May 1939 | Box 113 \ 5 scan0089 | |
| Requesting an order for two Bentley V frames for development and testing purposes. | 12th May 1939 | Box 113 \ 5 scan0090 | |
| Stiffness tests on a chassis frame without a cruciform member. | 12th May 1939 | Box 113 \ 5 scan0091 | |
| Potential weight saving and stiffness improvements for a vehicle frame by using the petrol tank as a cross-member and adopting welding. | 12th May 1939 | Box 113 \ 5 scan0092 | |
| Photograph of a vehicle chassis on Avery weighing scales in a factory. | 13th May 1939 | Box 113 \ 5 scan0093 | |
| Request to produce two bent front pans for light gauge frames to be tested for stiffness. | 13th May 1939 | Box 113 \ 5 scan0094 | |
| The ordering of frames and parts for Silver Wraith and Silver Dawn models. | 22th May 1939 | Box 113 \ 5 scan0095 | |
| Figures for steering column movements during front end shake measurements. | 12th Jul 1939 | Box 113 \ 5 scan0096 | |
| Request for an experimental Corniche frame to replace one smashed up in France. | 12th Aug 1939 | Box 113 \ 5 scan0097 | |
| Chassis frame thickness rationalisation and the manufacturing implications of using common dies. | 2nd Nov 1939 | Box 113 \ 5 scan0098 | |
| Letter to a supplier regarding the feasibility of using existing dies for a Bentley chassis frame with a different material thickness. | 8th Nov 1939 | Box 113 \ 5 scan0099 | |
| Material and tooling for the Ripletto Frame. | 10th Nov 1939 | Box 113 \ 5 scan0100 | |
| Short memo confirming that two pieces of low carbon material will be sufficient for Geoffrey Summers of Summers Chester. | 17th Nov 1939 | Box 113 \ 5 scan0101 | |
| Letter to John Summers & Sons confirming a telephone conversation and an order for steel sheets with specific carbon content. | 17th Nov 1939 | Box 113 \ 5 scan0102 | |
| Material requirements for light gauge 'Ripple' and 'Ripplet' frames. | 17th Nov 1939 | Box 113 \ 5 scan0103 | |
| Letter to John Summers & Sons Ltd. regarding a steel supply problem and future post-war motor car plans. | 22th Nov 1939 | Box 113 \ 5 scan0104 | |
| Page 2 of a letter to G. Summers regarding post-war travel plans and current work on aircraft. | 22th Nov 1939 | Box 113 \ 5 scan0105 | |
| Letter from steel manufacturer John Summers & Sons regarding the properties and supply of sheet steel. | 24th Nov 1939 | Box 113 \ 5 scan0106 | |
| Letter from John Summers & Sons, Ltd. regarding a strip mill visit and an attached laboratory report. | 24th Nov 1939 | Box 113 \ 5 scan0107 | |
| Laboratory report detailing the analysis and testing of metal sample Sm 9. | 24th Nov 1939 | Box 113 \ 5 scan0108 | |
| Photomicrographs of 16g. hot rolled strip from a Continuous Strip Mill. | 25th Nov 1939 | Box 113 \ 5 scan0109 | |
| Requesting an opinion on the laboratory analysis of sheet steel for frames. | 25th Nov 1939 | Box 113 \ 5 scan0110 | |
| Laboratory report detailing the chemical analysis and mechanical properties of a metal sheet sample. | 24th Nov 1939 | Box 113 \ 5 scan0111 | |
| Letter to a steel supplier requesting a figure of merit comparison for different carbon steels used in frames. | 28th Nov 1939 | Box 113 \ 5 scan0112 | |
| Physical properties of material for frames, specifically the carbon content and its effect on strength and weldability. | 28th Nov 1939 | Box 113 \ 5 scan0113 | |
| Issuance of a further batch of drawings for the Ripplet chassis frames and fittings. | 1st Feb 1940 | Box 113 \ 5 scan0114 | |
| Further drawings for the Rippletto chassis frames and fittings. | 1st Feb 1940 | Box 113 \ 5 scan0115 | |
| Brief report on unsuccessful experiments to simplify the bent front pan design. | 19th Feb 1940 | Box 113 \ 5 scan0116 | |
| Modifications to the Bent Front Pan to reduce cost, weight, and improve assembly, including a table of results. | 19th Feb 1940 | Box 113 \ 5 scan0117 | |
| Diagrams and notes detailing modifications to a pan component, including views and cross-sections. | 8th Mar 1940 | Box 113 \ 5 scan0118 | |
| The investigation of lightening short frame gussets, including torsion test results for a Silver Dawn frame. | 8th Mar 1940 | Box 113 \ 5 scan0119 | |
| Sketch of a B.V. Frame. | 17th Mar 1940 | Box 113 \ 5 scan0120 | |
| The Rippletto frame, including details on a second crossmember, spare wheel housing, and petrol filter specifications. | 12th Mar 1940 | Box 113 \ 5 scan0121 | |
| Blueprints for a Left Hand Silver Phantom's front pan. | 19th Mar 1940 | Box 113 \ 5 scan0122 | |
| The distribution of blueprints and prints for the L.H. Senior Range vehicle. | 5th Sep 1940 | Box 113 \ 5 scan0123 | |
| Listing blueprints and parts for the L.H. Senior Range vehicles. | 5th Sep 1940 | Box 113 \ 5 scan0124 | |
| Additional blueprints being sent for the Ripplet Chassis, including parts for pedals, frame, and fittings. | 9th Apr 1940 | Box 113 \ 5 scan0125 | |
| The issue of blueprints for the Rippletto Chassis frame and fittings. | 11th Apr 1940 | Box 113 \ 5 scan0126 | |
| Blueprints for the Rippletto Chassis frame and fittings. | 11th Apr 1940 | Box 113 \ 5 scan0127 | |
| New parts and instructions for the Ripplet's Frame & Fittings, Section 7000. | 12th Apr 1940 | Box 113 \ 5 scan0128 | |
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