| Description | Date | Identifier | |
| Extract detailing work on a parallel moving steering wheel, i.e. an anti-gyrostatic reaction front axle. | 8th Jul 1930 | Box 154 \ 3 scan0164 | |
| Requesting views and recommendations regarding Spring Steering Wheels. | 30th Dec 1930 | Box 154 \ 3 scan0165 | |
| Benefits and potential trial of spring steering wheels for various chassis. | 10th Dec 1930 | Box 154 \ 3 scan0166 | |
| Lack of advantages of spring steering wheels after testing on the 10-EX car. | 9th Jan 1931 | Box 154 \ 3 scan0167 | |
| Suggesting a white spot on the steering wheel to indicate when the front wheels are straight. | 27th Mar 1931 | Box 154 \ 3 scan0168 | |
| Proposal to add a white spot to the top centre of the steering wheel rim as a directional indicator for shunting. | 31th Mar 1931 | Box 154 \ 3 scan0169 | |
| Bluemels steering wheels fitted to Bentley chassis and the availability of different sizes. | 4th Jul 1932 | Box 154 \ 3 scan0170 | |
| Potential use of Bluemel's spring steering wheels to reduce vibration. | 28th Jul 1932 | Box 154 \ 3 scan0171 | |
| Characteristics and potential modifications of flexible steering wheels. | 29th Jul 1932 | Box 154 \ 3 scan0172 | |
| Flexibility and design of steering wheels for various car models. | 29th Jul 1932 | Box 154 \ 3 scan0173 | |
| Hand-drawn diagram illustrating a steering mechanism with flexibility points. | 30th Aug 1932 | Box 154 \ 3 scan0174 | |
| From Sg. to Hs/Rm regarding an update on steering wheels. | 30th Aug 1932 | Box 154 \ 3 scan0175 | |
| From Sg. to Hs. regarding the sourcing and fitting of a Spring Steering Wheel. | 15th Sep 1932 | Box 154 \ 3 scan0176 | |
| Availability and dispatch of a spring steering wheel for specific vehicle models. | 16th Sep 1932 | Box 154 \ 3 scan0177 | |
| Preparation and despatch of a special sprung type steering wheel for chassis GBT-9. | 16th Sep 1932 | Box 154 \ 3 scan0178 | |
| Providing feedback on the trial of a spring steering wheel, finding it unsuitable for standard cars. | 18th Oct 1932 | Box 154 \ 3 scan0179 | |
| Letter from Bluemel Bros Ltd regarding a spring wheel and its associated construction diagram. | 11th May 1933 | Box 154 \ 3 scan0180 | |
| Approving the Bluemell's Spring Arm type steering wheel for the first 15 production 3 1/4 Litre Bentley cars and requesting a drawing. | 11th May 1933 | Box 154 \ 3 scan0181 | |
| Letter from the Experimental Dept. to a supplier regarding variations in steering wheels for Bentley cars. | 27th Sep 1933 | Box 154 \ 3 scan0182 | |
| Letter from Bluemel Bros Ltd regarding a delay in dealing with Bentley Spring Steering Wheels due to stock-taking. | 28th Sep 1933 | Box 154 \ 3 scan0183 | |
| Letter to Bluemel Bros. Ltd. regarding a meeting arrangement. | 29th Sep 1933 | Box 154 \ 3 scan0184 | |
| Letter from Bluemel Bros Ltd arranging a visit from their Mr. Holly to the Derby works. | 29th Sep 1933 | Box 154 \ 3 scan0185 | |
| Letter from Bluemel Bros Ltd arranging a visit from their Mr. Holly. | 30th Sep 1933 | Box 154 \ 3 scan0186 | |
| Letter from the Experimental Dept. to Bluemel Bros. Ltd. to postpone a visit from Mr. Holley. | 2nd Oct 1933 | Box 154 \ 3 scan0187 | |
| Suggesting a design change for the Bentley steering wheel finger grips. | 11th Jan 1934 | Box 154 \ 3 scan0188 | |
| Grip on the Bentley steering wheel and seeking feedback. | 11th Jan 1934 | Box 154 \ 3 scan0189 | |
| Letter to Bluemel Bros. Ltd. regarding criticism of the small finger grip pitch on Bentley steering wheels and requesting two modified wheels. | 19th Jan 1934 | Box 154 \ 3 scan0190 | |
| Letter from Bluemel Bros Ltd regarding the cost and process for altering the pitch of finger grips. | 20th Jan 1934 | Box 154 \ 3 scan0191 | |
| Letter to Bluemel Bros. Ltd. requesting a sample wheel be made from solid before commissioning a new die. | 23th Jan 1934 | Box 154 \ 3 scan0192 | |
| Letter regarding a trial steering wheel with new finger grips. | 24th Jan 1934 | Box 154 \ 3 scan0193 | |
| Sample Bentley steering wheel with increased finger grip spacing. | 5th Feb 1934 | Box 154 \ 3 scan0194 | |
| Potential improvements to the Bentley steering wheel, specifically the finger grips. | 18th Jan 1934 | Box 154 \ 3 scan0195 | |
| Letter to Bluemel Bros. Ltd. about modifications and a trial for a new Bentley steering wheel. | 8th Mar 1934 | Box 154 \ 3 scan0196 | |
| Letter from Bluemel Bros Ltd concerning the production of a hand-made sample and quoting tooling costs of £25. | 9th Mar 1934 | Box 154 \ 3 scan0197 | |
| Letter from Bluemel Bros Ltd regarding a spring wheel sample being sent for evaluation. | 12th Mar 1934 | Box 154 \ 3 scan0198 | |
| Sample thin rim Bentley steering wheel received from Bluemels. | 13th Mar 1934 | Box 154 \ 3 scan0199 | |
| Trial and adoption of a new Bentley steering wheel with a thinner rim. | 19th Mar 1934 | Box 154 \ 3 scan0200 | |
| Bentley steering wheel supply from Bluemells and a suggestion to introduce a thinner rimmed wheel for the C series. | 27th Mar 1934 | Box 154 \ 3 scan0201 | |
| The unavailability of a thinner rim Bentley steering wheel until the 'C' Series. | 28th Mar 1934 | Box 154 \ 3 scan0202 | |
| Return of an experimental Bentley steering wheel and the adoption of a new standard wheel. | 8th Mar 1934 | Box 154 \ 3 scan0203 | |
| Confirmation of arrangements for a new Bentley steering wheel to be fitted as standard on 'C' series chassis. | 29th Mar 1934 | Box 154 \ 3 scan0204 | |
| Weight of a new Bentley steering wheel and advocating for differentiation from the standard 20/25 wheel. | 23th Apr 1934 | Box 154 \ 3 scan0205 | |
| Options for a lightweight steering wheel for a Bentley car. | 24th Apr 1934 | Box 154 \ 3 scan0206 | |
| Giving no objection to finding a lighter sprung steering wheel for the Bentley chassis. | 25th Apr 1934 | Box 154 \ 3 scan0207 | |
| Expressing interest in seeing a Bentley steering wheel upon its availability. | 3rd May 1934 | Box 154 \ 3 scan0208 | |
| Weight difference between Bentley and 25 HP steering wheels and proposing a test. | 3rd May 1934 | Box 154 \ 3 scan0209 | |
| The delivery of a sample lightened Bentley steering wheel from the supplier Bluemel's. | 30th May 1934 | Box 154 \ 3 scan0210 | |
| Request to see a sample of a suggested Bentley steering wheel. | 29th May 1934 | Box 154 \ 3 scan0211 | |
| Covering memo regarding a new Bentley Chassis Steering Wheel. | 18th Jul 1934 | Box 154 \ 3 scan0212 | |
| Copy of a letter discussing customer preferences for thinner steering wheels on Bentley chassis. | 17th Jul 1934 | Box 154 \ 3 scan0213 | |
| Requesting a modified Phantom steering wheel for trial on a Spectre model. | 6th Oct 1934 | Box 154 \ 3 scan0214 | |
| Internal memorandum discussing the Bluemel-Douglas adjustable steering wheel and its potential trial on a Bentley. | 24th Apr 1935 | Box 154 \ 3 scan0215 | |
| Sheet 2 of a report noting a surmountable difficulty with controls. | 24th Apr 1935 | Box 154 \ 3 scan0216 | |
| Reviewing the Bluemels-Douglas adjustable steering wheel after a demonstration. | 18th Apr 1935 | Box 154 \ 3 scan0217 | |
| Advantages and implementation of adjustable steering wheels, suggesting a trial on a 20/25 model. | 26th Apr 1935 | Box 154 \ 3 scan0218 | |
| Request to construct an attachment for measuring steering wheel torque on Spectre, 25 HP, or Bentley models. | 13th May 1935 | Box 154 \ 3 scan0219 | |
| Recommending the adoption of a larger, thinner rim steering wheel for the 20/25 model as a standard feature. | 17th Jun 1935 | Box 154 \ 3 scan0220 | |
| The introduction of a larger steering wheel and a sample three-spoke wheel for the 20/25 HP chassis. | 18th Jun 1935 | Box 154 \ 3 scan0221 | |
| Applicability of a Bluemel Telescopic Steering Wheel for Bentley vehicles. | 3rd Jul 1936 | Box 154 \ 3 scan0222 | |
| Letter from Bluemel Bros. Ltd. to Bentley Motors promoting their telescopic steering wheel as standard equipment. | 2nd Jul 1936 | Box 154 \ 3 scan0223 | |
| Brochure for the Bluemels adjustable steering wheel, including removal instructions. | 1st Jan 1933 | Box 154 \ 3 scan0224 | |
| Technical description and operating instructions for the Douglas adjustable-for-reach steering wheel. | 1st Jan 1933 | Box 154 \ 3 scan0225 | |
| Advertisement for the Bluemel's 'Telescopic' Steering Wheel, featuring a compilation of positive press reviews. | 1st May 1936 | Box 154 \ 3 scan0226 | |
| Compilation of press cuttings from well-known motoring writers expressing their appreciation for adjustable steering wheels. | 1st May 1936 | Box 154 \ 3 scan0227 | |
| Viability and design of a Bluemel telescopic steering wheel, with comparisons to an S.S. Jaguar. | 10th Jul 1936 | Box 154 \ 3 scan0228 | |
| Lack of demand for a Bluemel Telescopic Steering Wheel and suggesting the matter be shelved. | 13th Jul 1936 | Box 154 \ 3 scan0229 | |
| Meeting minutes from October 1911 discussing Zinc Aluminium Alloy and 'Y' steel. | 28th Nov 1911 | Box 154a \ 1 scan0001 | |
| Meeting minutes from late 1911 discussing steel hardening processes and materials. | 28th Feb 1911 | Box 154a \ 1 scan0002 | |
| The hardening of nickel steel gears and the procurement of a refrigerator plant for cooling hardening oil. | 27th Oct 1911 | Box 154a \ 1 scan0003 | |
| Departmental memo enquiring if the Technical Committee has considered the 'Y' steel. | 27th Oct 1911 | Box 154a \ 1 scan0004 | |
| Page from 'Our Consulting Department' addressing home enquiries on motor vehicles and detailing the properties of 'Y' steel. | 21th Oct 1911 | Box 154a \ 1 scan0005 | |
| Article on Girling motor carriers for Australia, and a consulting section with enquiries from New Zealand, the USA, and Western Australia. | 21th Oct 1911 | Box 154a \ 1 scan0006 | |
| Journal article describing the properties, heat treatment, and applications of different grades of steel. | 21th Oct 1911 | Box 154a \ 1 scan0007 | |
| Article on the influence of detail, including accessibility, fuels, and lubrication, on automobile development. | 21th Oct 1911 | Box 154a \ 1 scan0008 | |
| Meeting minutes discussing the submission and potential testing of French steel from Acieres de Mont-Didier. | 16th Nov 1911 | Box 154a \ 1 scan0009 | |
| Testing of steel samples from Acierbres de Mont Didier. | 20th Nov 1911 | Box 154a \ 1 scan0010 | |
| Vanadium Steel suppliers, expressing satisfaction with Sheffield and suggesting to watch continental competitors. | 11th Dec 1913 | Box 154a \ 1 scan0011 | |
| B.N.D. air hardening gear steel and manufacturing processes for quieter gears. | 28th Jan 1914 | Box 154a \ 1 scan0012 | |
| Results of Upton-Lewis tests on steel bars, comparing different heat treatments. | 15th May 1915 | Box 154a \ 1 scan0013 | |
| Use and Brinell hardness of K.E. 805 steel for road springs and other parts. | 19th May 1915 | Box 154a \ 1 scan0014 | |
| Requesting information on Invar steel, coefficient of expansion for various alloys, and soldering methods for stainless steel. | 11th Nov 1918 | Box 154a \ 1 scan0015 | |
| Enquiry to Messrs. Brown-Bayleys about the properties and availability of stainless steel. | 8th Nov 1918 | Box 154a \ 1 scan0016 | |
| Properties and sourcing of 'Invar' steel, stainless steel, and Fluxite for soldering. | 8th Nov 1918 | Box 154a \ 1 scan0017 | |
| Inquiry into the supply of 'Invar' steel. | 26th Apr 1917 | Box 154a \ 1 scan0018 | |
| Letter from a steel works discussing the properties, supply, and soldering of stainless steel sheets. | 13th Nov 1918 | Box 154a \ 1 scan0019 | |
| Letter to Messrs. Cammell Laird & Co., Ltd. inquiring about the supply of Invar Steel. | 15th Nov 1918 | Box 154a \ 1 scan0020 | |
| Possibility of rolling and soldering stainless steel based on enquiries with other firms. | 15th Nov 1918 | Box 154a \ 1 scan0021 | |
| Letter from The Cambridge Scientific Instrument Co. Ltd. regarding the inability to supply 'Invar' Steel. | 14th Nov 1918 | Box 154a \ 1 scan0022 | |
| Quotation for the supply of 36% Nickel Steel, detailing price and coefficient of expansion. | 19th Nov 1918 | Box 154a \ 1 scan0023 | |
| Cover memo attaching correspondence from Cammell Laird & Co. regarding an enquiry about 'Invar' Steel. | 20th Nov 1918 | Box 154a \ 1 scan0024 | |
| To Mr. Whitehead following up on an enquiry about stainless steel sheets from Messrs. Firth. | 13th Dec 1918 | Box 154a \ 1 scan0025 | |
| Laboratory report on the analysis of six experimental 'Quick-step' steel casts from Messrs Brown Bailey's. | 25th Oct 1918 | Box 154a \ 1 scan0026 | |
| Letter from Thos. Firth & Sons concerning the supply and properties of hot-rolled stainless steel sheets. | 16th Dec 1918 | Box 154a \ 1 scan0027 | |
| Letter from a supplier regarding specifications for stainless steel sheets and offering a sample penknife. | 16th Dec 1918 | Box 154a \ 1 scan0028 | |
| Forwarding letters, pamphlets, and a penknife concerning Stainless Steel in response to a request from Mr. Royce. | 17th Dec 1918 | Box 154a \ 1 scan0029 | |
| Enquiry on stainless steel, noting the receipt of letters, pamphlets, and a pen-knife from Messrs. Thomas Firth & Sons. | 17th Dec 1918 | Box 154a \ 1 scan0030 | |
| Solutions for plate warping in the Goshawk 11 clutch. | 7th Sep 1921 | Box 154a \ 1 scan0031 | |
| Using curved spokes in cast iron wheels and comparisons of single plate clutch mechanisms. | 7th Sep 1921 | Box 154a \ 1 scan0032 | |
| Requesting the procurement of three steel 'Invara' rods. | 14th Feb 1922 | Box 154a \ 1 scan0033 | |
| Letter from John Thompson Motor Pressings Ltd. following up on samples of Steel Pressings. | 20th Jun 1922 | Box 154a \ 1 scan0034 | |
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