| Description | Date | Identifier | |
| Three possible designs for a Bentley petrol tank filler and vent pipe to prevent fuel fumes. | 14th Nov 1933 | Box 88 \ 5 scan0077 | |
| Requesting the production of three anti-surging pots for Bentley petrol tanks. | 27th Nov 1933 | Box 88 \ 5 scan0078 | |
| Modification of a Bentley chassis with a sealed petrol tank to increase luggage space. | 28th Nov 1936 | Box 88 \ 5 scan0079 | |
| Requesting the urgent fitting of Air Vent Scheme R.R. 533 to the petrol filler on Bentley car 2-B-IV. | 6th Jan 1934 | Box 88 \ 5 scan0080 | |
| Design and implementation of a sealed petrol filler with a vent for the Bentley Chassis. | 15th Dec 1933 | Box 88 \ 5 scan0081 | |
| Revised fuel tank filler and venting scheme for future Bentley models. | 15th Dec 1933 | Box 88 \ 5 scan0082 | |
| Adoption and standardisation of a sealed petrol filler for all production Bentleys. | 18th Dec 1933 | Box 88 \ 5 scan0083 | |
| Implementation of a sealed petrol filler with a breathing pipe for Bentley chassis, under Scheme 553. | 18th Dec 1933 | Box 88 \ 5 scan0084 | |
| Addition of a breathing pipe to the Bentley petrol filler. | 1st Dec 1938 | Box 88 \ 5 scan0085 | |
| Alteration of Bentley petrol fillers to increase luggage space. | 4th Jan 1934 | Box 88 \ 5 scan0086 | |
| Proposed Bentley petrol tank with an outside filler, referencing the Vulture model. | 5th Jan 1934 | Box 88 \ 5 scan0087 | |
| Proposing a modification to the Bentley petrol tank mounting to simplify its removal on the 10,000 miles car. | 17th Jan 1934 | Box 88 \ 5 scan0088 | |
| Standardisation of a petrol tank breather pipe and surging baffle. | 20th Dec 1933 | Box 88 \ 5 scan0089 | |
| Design of a sealed filler air vent for the Bentley petrol tank. | 22th Jan 1934 | Box 88 \ 5 scan0090 | |
| The decision not to standardise an outside petrol filler for Bentley cars but to offer it as an option. | 5th Feb 1934 | Box 88 \ 5 scan0091 | |
| Design change to the Bentley petrol tank filler. | 1st Mar 1934 | Box 88 \ 5 scan0092 | |
| Request to manufacture and fit a new petrol tank filler with an air vent for car 2-B-IV. | 15th Mar 1934 | Box 88 \ 5 scan0093 | |
| Correspondence regarding the replacement of a petrol tank filler and air vent. | 15th Mar 1934 | Box 88 \ 5 scan0094 | |
| Query regarding the position of the petrol tank filler for a specific car and for the next series of Bentley cars. | 22th Mar 1934 | Box 88 \ 5 scan0095 | |
| Advantages and disadvantages of standardising inside versus outside petrol tank fillers on a Bentley chassis. | 24th Mar 1934 | Box 88 \ 5 scan0096 | |
| The disadvantages and advantages of an external fuel filler cap, concluding in favour of the inside filler. | 24th Mar 1934 | Box 88 \ 5 scan0097 | |
| Fuel tank filler design, its placement, and suspension revisions for a vehicle. | 23th Mar 1934 | Box 88 \ 5 scan0098 | |
| Clarifying a misunderstanding regarding the design of an external petrol tank filler for a Bentley. | 26th Mar 1934 | Box 88 \ 5 scan0099 | |
| Opinions on the Bentley external petrol tank filler. | 7th Mar 1934 | Box 88 \ 5 scan0100 | |
| Required modifications for petrol tanks with outside fillers on two specific cars due to leaking issues. | 11th Jun 1934 | Box 88 \ 5 scan0101 | |
| Request to manufacture one set of Bentley Petrol Piping according to a specific scheme for a 1-B-IV Chassis. | 11th Jun 1934 | Box 88 \ 5 scan0102 | |
| Instructing an official order be sent to S. Smith & Sons for a petrol gauge for a Bentley petrol tank. | 14th Jun 1934 | Box 88 \ 5 scan0103 | |
| Letter to S. Smith & Sons requesting a petrol gauge for a new 26-gallon petrol tank for a Bentley. | 14th Jun 1934 | Box 88 \ 5 scan0104 | |
| Sample of an all-metal flexible petrol pipe for a Bentley car. | 19th Jun 1934 | Box 88 \ 5 scan0105 | |
| Suitability and cost of all-metal petrol pipes from various suppliers. | 29th Jun 1934 | Box 88 \ 5 scan0106 | |
| The unsatisfactory results from testing a petrol reserve warning light system on model 1-B-IV. | 10th Aug 1934 | Box 88 \ 5 scan0107 | |
| Suggestion to use a larger float on the tank unit for more accurate petrol level readings. | 7th Jan 1941 | Box 88 \ 5 scan0108 | |
| Requesting a 10,000 miles test for a Bentley petrol tank air vent. | 14th Sep 1934 | Box 88 \ 5 scan0109 | |
| Query about increasing the petrol filler access door size for Continental pumps on chassis B.7.BN. | 26th Sep 1934 | Box 88 \ 5 scan0110 | |
| Filler accessibility on chassis B.7.BN. | 27th Sep 1934 | Box 88 \ 5 scan0111 | |
| Supplementary information and spring modifications for a Bentley petrol tank filler located inside the luggage boot. | 26th Feb 1935 | Box 88 \ 5 scan0112 | |
| Describing a petrol filler design for a Bentley, located in the luggage boot. | 19th Feb 1935 | Box 88 \ 5 scan0113 | |
| Comparative analysis of petrol tank weights for various cars. | 25th Mar 1935 | Box 88 \ 5 scan0114 | |
| Weight savings and modifications to the 5-B-IV petrol system. | 29th Mar 1935 | Box 88 \ 5 scan0115 | |
| Comparing a British-made flexible petrol pipe with the currently used American-made version for 20/25-HP and Bentley chassis. | 24th May 1935 | Box 88 \ 5 scan0116 | |
| Revised design for a Bentley petrol tank filler and cap. | 4th Jun 1935 | Box 88 \ 5 scan0117 | |
| Proposal to fit a new filler cap and filler to the first eight Spectre cars, pending sales approval of the appearance. | 17th Sep 1935 | Box 88 \ 5 scan0118 | |
| Following up on an order for flexible petrol pipes for 20/25-HP and Bentley 'G' Series chassis. | 17th Sep 1935 | Box 88 \ 5 scan0119 | |
| Request to get the weight of a lightened petrol tank to be fitted to model 6-B-IV. | 20th Sep 1935 | Box 88 \ 5 scan0120 | |
| The supply and fitting of flexible petrol pipes for Bentley and 20/25 HP chassis. | 21th Sep 1935 | Box 88 \ 5 scan0121 | |
| Modifications to a Bentley's petrol tank filler on the side of the body. | 26th Sep 1935 | Box 88 \ 5 scan0122 | |
| Modifications to a Bentley petrol tank filler on the side of the body. | 26th Sep 1935 | Box 88 \ 5 scan0123 | |
| Sketch of a riveted and seamed steel shield with annotations. | 3rd Oct 1935 | Box 88 \ 5 scan0124 | |
| Change to the petrol system design due to a delay, opting for a single pipe line with a reserve warning light. | 3rd Oct 1935 | Box 88 \ 5 scan0125 | |
| Lightened petrol tank and protective shield for a Bentley, with reference to chassis 6B4 and Phantom III. | 3rd Oct 1935 | Box 88 \ 5 scan0126 | |
| Updates and fitting instructions for the 6-B-IV Petrol System. | 4th Nov 1935 | Box 88 \ 5 scan0127 | |
| The fitting of a Bentley petrol tank filler. | 5th Nov 1935 | Box 88 \ 5 scan0128 | |
| Letter from Benton & Stone Ltd. providing a quote for a special petrol cock and filter for a Bentley car. | 7th Dec 1935 | Box 88 \ 5 scan0129 | |
| Quotation for seamless metallic bellows and shaft seals from The Packless Gland Co., Ltd. | 9th Dec 1935 | Box 88 \ 5 scan0130 | |
| Letter from The Packless Gland Co. Ltd. regarding instructions and a delayed quotation. | 9th Dec 1935 | Box 88 \ 5 scan0131 | |
| Specification table detailing nominal and actual dimensions, area, length, and other properties for various listed parts. | 21th Jun 1935 | Box 88 \ 5 scan0132 | |
| Drawing for an adjusting bellows for a filler tube. | 21th Jun 1935 | Box 88 \ 5 scan0133 | |
| Letter to Benton & Stone Ltd. regarding the fitting of a cork seated tap for a filter on a Bentley chassis. | 10th Dec 1935 | Box 88 \ 5 scan0134 | |
| Design and implementation of a petrol filler on the side of the body for Bentley models. | 10th Dec 1935 | Box 88 \ 5 scan0135 | |
| Letter from a tubing company advising against using their METALFLEX tube for motor-car fuel pipes due to fracture from vibration and fatigue. | 10th Dec 1935 | Box 88 \ 5 scan0136 | |
| Letter from The Packless Gland Co. Ltd. discussing the pricing of assembly FB. 2206 and proposing a design change to reduce costs. | 11th Dec 1935 | Box 88 \ 5 scan0137 | |
| Correspondence from Benton & Stone Ltd. regarding a cork seated tap for a filter on a Bentley chassis. | 12th Dec 1935 | Box 88 \ 5 scan0138 | |
| Letter to Benton & Stone Ltd. regarding a proposed cork seated tap for a filter on a Bentley Chassis. | 18th Dec 1935 | Box 88 \ 5 scan0139 | |
| New drawings for the Large Bore Bentley Chassis concerning pipes and fittings. | 20th Dec 1935 | Box 88 \ 5 scan0140 | |
| Cover note attaching a letter and blueprints from Park Ward & Co. regarding criticisms of a filter on a Bentley chassis frame. | 2nd Jan 1936 | Box 88 \ 5 scan0141 | |
| Letter from coachbuilder Park Ward to Bentley Motors regarding the positioning of petrol filters on Coupe and Saloon bodies. | 24th Dec 1935 | Box 88 \ 5 scan0142 | |
| Letter from Superflexit Ltd offering to quote for the supply of flexible tubing for cars. | 14th Jan 1936 | Box 88 \ 5 scan0143 | |
| Letter to Messrs Superflexit Ltd regarding drawings and a request for a quote on 'Superflexit' equivalents. | 16th Jan 1936 | Box 88 \ 5 scan0144 | |
| Sending union nuts to Superflexit Ltd. for use on sample flex petrol pipes. | 17th Jan 1936 | Box 88 \ 5 scan0145 | |
| Letter from supplier Superflexit Ltd. noting that drawings F.87715 and FB.1677 were missing from a request to quote for samples. | 17th Jan 1936 | Box 88 \ 5 scan0146 | |
| The stock levels of tank units and warning light contacts for Bentley and 20/25-HP chassis. | 3rd Feb 1936 | Box 88 \ 5 scan0147 | |
| Quotation from Superflexit Ltd. for the supply of flexible petrol pipes for Rolls-Royce and Bentley Cars. | 3rd Feb 1936 | Box 88 \ 5 scan0148 | |
| Letter to Superflexit Ltd. thanking them for a quotation and samples of flexible petrol piping. | 6th Feb 1936 | Box 88 \ 5 scan0149 | |
| Petrol reserve warning light and filter on large bore Bentley chassis, addressing issues of vapour lock and modifications to existing stock. | 7th Feb 1936 | Box 88 \ 5 scan0150 | |
| Modified Bentley petrol pipe, accompanying drawing LeC.4994. | 14th Feb 1936 | Box 88 \ 5 scan0151 | |
| Issues with Bentley petrol tanks being punctured by stones and a successful protective modification. | 5th Mar 1936 | Box 88 \ 5 scan0152 | |
| Letter from Superflexit Ltd. following up on samples of flexible petrol pipe, with handwritten internal notes. | 31th Mar 1936 | Box 88 \ 5 scan0153 | |
| Letter to Superflexit Ltd. stating insufficient running time to form an opinion on a petrol pipe. | 8th Apr 1936 | Box 88 \ 5 scan0154 | |
| Letter from SUPERFLEXIT Ltd. regarding the approval of their flexible tubing for use on cars. | 9th Apr 1936 | Box 88 \ 5 scan0155 | |
| Advertisement for 'SUPERFLEXIT' flexible tubing, detailing its users, reliability records, and quotation requirements. | 9th Apr 1936 | Box 88 \ 5 scan0156 | |
| Product information sheet for 'SUPERFLEXIT' patented non-metallic flexible tubing. | 1st May 1936 | Box 88 \ 5 scan0157 | |
| Letter concerning the supply and pricing of adjusting bellows for a petrol filler tube. | 1st May 1936 | Box 88 \ 5 scan0158 | |
| Letter requesting a quotation for bellows in various lot sizes, with a reference to a competitor's pricing. | 1st May 1936 | Box 88 \ 5 scan0159 | |
| Confirming the despatch of an 'Adjusting Bellows for Petrol Filler Tube' to The Packless Gland Co. Ltd. for examination. | 1st May 1936 | Box 88 \ 5 scan0160 | |
| Letter from The Packless Gland Co. Ltd. acknowledging receipt of a letter and promising a quote for bellows. | 2nd May 1936 | Box 88 \ 5 scan0161 | |
| Letter from The Packless Gland Co. Ltd. regarding the design and production of a sample bellows for a filler tube. | 5th May 1936 | Box 88 \ 5 scan0162 | |
| Quotation letter from The Packless Gland Co. Ltd. for the supply of bellows. | 8th May 1936 | Box 88 \ 5 scan0163 | |
| Letter to The Packless Gland Co. Ltd. concerning defects in a sample adjusting bellows for a filler tube. | 8th May 1936 | Box 88 \ 5 scan0164 | |
| Request for a quotation for bellows with two alternative internal diameter specifications. | 8th May 1936 | Box 88 \ 5 scan0165 | |
| Standardising the Bentley outside petrol filler and issues regarding petrol hose guns in France. | 8th May 1936 | Box 88 \ 5 scan0166 | |
| Letter from The Packless Gland Co., Ltd. regarding adjusting bellows for a filler tube. | 13th May 1936 | Box 88 \ 5 scan0167 | |
| Letter to The Packless Gland Co. Ltd. regarding the testing of sample bellows. | 18th May 1936 | Box 88 \ 5 scan0168 | |
| Standardisation and design issues of outside petrol fillers for Phantom III and Bentley cars. | 19th May 1936 | Box 88 \ 5 scan0169 | |
| Letter from The Packless Gland Co., Ltd. regarding adjusting bellows for filler tube FB.2206. | 20th May 1936 | Box 88 \ 5 scan0170 | |
| Confirming the successful 10,000-mile test of a lightened petrol tank and issuing its standardisation for production. | 23th May 1936 | Box 88 \ 5 scan0171 | |
| Letter from S. Smith & Sons regarding an oil level indicator and a query about a drawing number. | 15th Jun 1936 | Box 88 \ 5 scan0172 | |
| Correspondence with S. Smith & Sons regarding a faulty petrol low level warning light and a special pressure oil gauge. | 16th Jun 1936 | Box 88 \ 5 scan0173 | |
| Request to despatch one Petrol Gauge Tank Unit to G.W. Hancock in France. | 16th Jun 1936 | Box 88 \ 5 scan0174 | |
| Letter from Superflexit Ltd. arranging a meeting in Derby with Mr. Rowbotham. | 18th Jun 1936 | Box 88 \ 5 scan0175 | |
| Requesting the design for a stone guard to be issued to allow costing of a lightened petrol tank to be completed. | 15th Jul 1936 | Box 88 \ 5 scan0176 | |
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