| Description | Date | Identifier | |
| Letter from Armstrong Whitworth Securities Co. Ltd. concerning an agreement for the development of Road Transport Compression Ignition Engines. | 8th Mar 1940 | Box 133 \ 3 scan0148 | |
| Page 2 of a letter addressed to E.W. Hives, Esq. | 8th Mar 1940 | Box 133 \ 3 scan0149 | |
| Letter from Armstrong Whitworth proposing a collaboration on the development and licensing of compression ignition engines. | 8th Mar 1940 | Box 133 \ 3 scan0150 | |
| Letter from Armstrong Whitworth Securities proposing lump sum and royalty payment terms for a Road Transport Compression Ignition engine license. | 8th May 1940 | Box 133 \ 3 scan0151 | |
| Legal deed outlining a licensing agreement between multiple parties for the manufacture and sale of patented engines. | 1st Jan 1940 | Box 133 \ 3 scan0152 | |
| License agreement page detailing terms, royalties, and duration for using the 'Kadenacy System' in engines. | 1st Jan 1940 | Box 133 \ 3 scan0153 | |
| Page from a licensing agreement detailing royalty payments and accounting procedures for the Kadenacy System. | 1st Jan 1940 | Box 133 \ 3 scan0154 | |
| Page from a legal agreement outlining terms for sub-licensees, patents, royalties, and potential infringements. | 1st Jan 1940 | Box 133 \ 3 scan0155 | |
| Page from a licensing agreement regarding patent infringement, fees, and improvements to the Kadenacy System. | 1st Jan 1940 | Box 133 \ 3 scan0156 | |
| License agreement document detailing obligations between parties regarding patents and improvements to the Kadenacy System. | 1st Jan 1940 | Box 133 \ 3 scan0157 | |
| Page 7 of a licence agreement detailing clauses for payment, confidentiality regarding the Kadenacy System, and procedures for giving notice. | 1st Jan 1940 | Box 133 \ 3 scan0158 | |
| Arbitration clause followed by a schedule of United Kingdom patent numbers. | 14th Mar 1940 | Box 133 \ 3 scan0159 | |
| Secret memo discussing staffing and responsibilities within the Marine Section engine design team. | 14th Mar 1940 | Box 133 \ 3 scan0160 | |
| Meeting with the Admiralty about engine specifications for motor boats. | 1st Apr 1940 | Box 133 \ 3 scan0161 | |
| And comparing different manufacturers of Marine Reverse Gears. | 2nd Apr 1940 | Box 133 \ 3 scan0162 | |
| The potential sale of two marine engines to the Admiralty and the provision of hull blueprints. | 4th Apr 1940 | Box 133 \ 3 scan0163 | |
| Order numbers for the development of Marine Engines - Chassis Type. | 5th Apr 1940 | Box 133 \ 3 scan0164 | |
| Use of a governor and Vertex Magneto for marine engines. | 5th Apr 1940 | Box 133 \ 3 scan0165 | |
| The programme to install marine engines into Admiralty and Civil boats. | 8th Apr 1940 | Box 133 \ 3 scan0166 | |
| List of design and action points to be considered in finalising the designs for an experimental engine. | 8th Apr 1940 | Box 133 \ 3 scan0167 | |
| Page outlining questions about financial contributions for marine units and requesting a completion date for the designs. | 8th Apr 1940 | Box 133 \ 3 scan0168 | |
| Memo regarding the design work timeline for a marine engine. | 9th Apr 1940 | Box 133 \ 3 scan0169 | |
| Proposition to fit 8-cylinder marine units into tenders for Imperial Airways. | 9th Apr 1940 | Box 133 \ 3 scan0170 | |
| The decision to focus on the 8-cylinder marine engine and drop the 6-cylinder unit for the Navy and Imperial Airways. | 12th Apr 1940 | Box 133 \ 3 scan0171 | |
| Letter to H. Sammons of Armstrong Whitworth Securities Co. regarding a proposed Kadenacy patent agreement. | 15th Apr 1940 | Box 133 \ 3 scan0172 | |
| Decision to notify Hagg of choosing Imperial Airways over the Admiralty for marine engines. | 15th Apr 1940 | Box 133 \ 3 scan0173 | |
| Price and specification comparison of British & American marine engines against the B.80 and B.60 models. | 15th Apr 1940 | Box 133 \ 3 scan0174 | |
| With a diagram reviewing the Serck oil cooler for a Marine B.80 engine test. | 18th Apr 1940 | Box 133 \ 3 scan0175 | |
| Letter from Armstrong Whitworth Securities Co. Ltd. to W.A. Robotham acknowledging a previous letter and promising a follow-up. | 18th Apr 1940 | Box 133 \ 3 scan0176 | |
| And agreeing on the pricing of marine engine units. | 19th Apr 1940 | Box 133 \ 3 scan0177 | |
| Preliminary test report on the water circulation restriction of a Marine BO Serck Oil Cooler. | 19th Apr 1940 | Box 133 \ 3 scan0178 | |
| Changes to marine oil fittings, specifically relief valves, a sump pump, and the oil flow system. | 22th Apr 1940 | Box 133 \ 3 scan0179 | |
| Letter from Armstrong Whitworth Securities Company arranging a meeting in Derby to discuss an alternative scheme. | 22th Apr 1940 | Box 133 \ 3 scan0180 | |
| Letter to H. Sammons regarding an appointment and unexpected sick leave. | 25th Apr 1940 | Box 133 \ 3 scan0181 | |
| Requirements for a new starter motor for a B.80 Marine Engine. | 25th Apr 1940 | Box 133 \ 3 scan0182 | |
| Stating that The Parsons Engineering Co. cannot produce gearbox castings and stub shafts for a marine reverse gear. | 26th Apr 1940 | Box 133 \ 3 scan0183 | |
| Crankcase modification on marine engines to accommodate a starter motor. | 26th Apr 1940 | Box 133 \ 3 scan0184 | |
| Recommendation from the Admiralty to fit a Scintilla Vertex Magneto with a speed-limiting device, with a proposal to use it on the B.80 Marine Engine. | 24th Apr 1940 | Box 133 \ 3 scan0185 | |
| Testing of a speed limit device or governor for marine engines. | 26th Apr 1940 | Box 133 \ 3 scan0186 | |
| Explanation of the differences in the water and oil systems between the B.80 Marine engine and the standard motor car engine. | 22th Apr 1940 | Box 133 \ 3 scan0187 | |
| Letter from Armstrong Whitworth Securities Company Limited regarding a delayed response and arranging a future meeting. | 30th Apr 1940 | Box 133 \ 3 scan0188 | |
| Instructions for a test on a marine engine cooling system arrangement. | 3rd May 1940 | Box 133 \ 3 scan0189 | |
| Details on a variable speed electric motor driving a second water pump for intercooler cooling. | 1st Dec 1940 | Box 133 \ 3 scan0190 | |
| Letter from the Experimental Department to Messrs. Lucas enquiring about a starter motor for a marine engine. | 1st May 1940 | Box 133 \ 3 scan0191 | |
| Design specifications and limitations for a new starter motor for the B.80 Marine Engine. | 25th Apr 1940 | Box 133 \ 3 scan0192 | |
| Relocation of a thermometer on the B.80 Marine Unit cylinder head. | 30th Apr 1940 | Box 133 \ 3 scan0193 | |
| Letter confirming the dispatch of engine drawings and the subsequent delivery of the engine itself. | 1st May 1940 | Box 133 \ 3 scan0194 | |
| B.80 Marine induction pipe, rejecting a 'Ram Horn' design due to defects and reverting to a Solex up-draught carburetter. | 7th May 1940 | Box 133 \ 3 scan0195 | |
| High positioning of a Scintilla Magneto on an 8-cylinder engine and the resulting need for an additional support stay due to vibration concerns. | 10th May 1940 | Box 133 \ 3 scan0196 | |
| Expressing a lack of enthusiasm for the Scintilla magneto and suggesting modifications to the in-house distributor instead. | 13th May 1940 | Box 133 \ 3 scan0197 | |
| Potential customers for B.80 marine engines, including Imperial Airways and Messrs. Samuel White. | 14th May 1940 | Box 133 \ 3 scan0198 | |
| Letter from marine engineers W. & J. Tod Ltd. discussing the market for a new 8-cylinder marine engine. | 18th May 1940 | Box 133 \ 3 scan0199 | |
| Page 2 of a letter from W. & J. TOD LIMITED regarding an experimental engine and fuel types. | 21th May 1940 | Box 133 \ 3 scan0200 | |
| Parts required for a B.80 Marine Water Cooled Exhaust Manifold, scheme PL.169. | 21th May 1940 | Box 133 \ 3 scan0201 | |
| Letter from the Experimental Department discussing safety fuel options and potential engine developments. | 22th May 1940 | Box 133 \ 3 scan0202 | |
| Letter from Armstrong Whitworth Securities to W.A. Robotham concerning a follow-up and well wishes. | 22th May 1940 | Box 133 \ 3 scan0203 | |
| Parts for a thermometer installation in the cylinder head of a B.80 Marine Engine. | 23th May 1940 | Box 133 \ 3 scan0204 | |
| Letter to H. Sammons regarding a meeting, explaining that development work has stopped due to war production. | 24th May 1940 | Box 133 \ 3 scan0205 | |
| Letter from Armstrong Whitworth Securities Company Limited regarding a potential visit and the development status of a road vehicle engine. | 28th May 1940 | Box 133 \ 3 scan0206 | |
| Letter discussing the temporary suspension of a road vehicle engine project due to the international situation and shifting manufacturing to aviation. | 30th May 1940 | Box 133 \ 3 scan0207 | |
| Comparing performance data for 2-stroke Compression Ignition and Petrol Injection engines. | 31th May 1940 | Box 133 \ 3 scan0208 | |
| Request for information on pumps and nozzles for 2-stroke engines. | 1st Jun 1940 | Box 133 \ 3 scan0209 | |
| Forwarding a letter from Messrs John Morris & Co. (Gosport) Ltd. regarding the development of marine units. | 1st Jun 1940 | Box 133 \ 3 scan0210 | |
| Letter from Armstrong Whitworth Securities Company Limited to W.A. Robotham acknowledging a letter and promising a follow-up. | 3rd Jun 1940 | Box 133 \ 3 scan0211 | |
| The progress status of various components for the Clan Experimental marine engine programme. | 11th Jun 1940 | Box 133 \ 3 scan0212 | |
| Progress on various components for the Clan Experimental marine engine programme. | 11th Jun 1940 | Box 133 \ 3 scan0213 | |
| Letter to The Zenith Carburetter Co. regarding an advertisement for Stromberg Updraught Marine Carburetters. | 12th Jun 1940 | Box 133 \ 3 scan0214 | |
| Letter from Zenith Carburetter Co. Ltd regarding Stromberg marine and twin updraught carburetters. | 14th Jun 1940 | Box 133 \ 3 scan0215 | |
| Follow-up letter from Solex Ltd. regarding a sample of a Dual Carburettor. | 17th Jun 1940 | Box 133 \ 3 scan0216 | |
| Letter to the Zenith Carburetter Co. Ltd. clarifying requirements for marine and dual carburetters. | 18th Jun 1940 | Box 133 \ 3 scan0217 | |
| Parts and drawings for the B.80 Marine Unit. | 19th Jun 1940 | Box 133 \ 3 scan0218 | |
| Requesting the results of an oil flow test on a filter assembly to settle an outstanding account. | 21th Jun 1940 | Box 133 \ 3 scan0219 | |
| Letter to Solex Ltd. inquiring about a carburetter that has not been received. | 23th Jun 1940 | Box 133 \ 3 scan0220 | |
| Blueprints for an induction pipe and oil cooler for a B 80 Marine engine. | 27th Jun 1940 | Box 133 \ 3 scan0221 | |
| Letter from Solex Ltd regarding the dispatch and material composition of a 35 m/m FFVS carburettor. | 28th Jun 1940 | Box 133 \ 3 scan0222 | |
| Calculating starter motor torque for the B.80 'Marine' engine based on data from the B.60 engine. | 1st Jul 1940 | Box 133 \ 3 scan0223 | |
| Performance analysis and discussion of the B.80 Engine's starter motor and battery system. | 2nd Jul 1940 | Box 133 \ 3 scan0224 | |
| Letter from Zenith Carburetter Co. Ltd. to Rolls-Royce regarding a Bendix Aviation twin updraught carburetter. | 2nd Jul 1940 | Box 133 \ 3 scan0225 | |
| Confirming the dispatch of blueprints for the B80 Marine engine's crankshaft and flywheel. | 6th Jul 1940 | Box 133 \ 3 scan0226 | |
| Letter from Zenith Carburetter Co Ltd regarding the receipt and finishing of 6 dual Stromberg Carburetters from America. | 8th Jul 1940 | Box 133 \ 3 scan0227 | |
| Final designs for the inter-cooler installation on a B.80 Marine Unit, questioning the size chosen. | 10th Jul 1940 | Box 133 \ 3 scan0228 | |
| The dispatch of blueprints for a marine engine sump pump bracket and cap. | 10th Jul 1940 | Box 133 \ 3 scan0229 | |
| Parts required for a flame arrester for a B.80 Marine engine carburettor. | 11th Jul 1940 | Box 133 \ 3 scan0230 | |
| The issue of blueprints for a B 8Q Marine engine's Parsons reverse box and crankshaft. | 11th Jul 1940 | Box 133 \ 3 scan0231 | |
| Letter from the Experimental Department requesting drawings and literature for the UUR.2 carburetter from The Zenith Carburetter Co. | 11th Jul 1940 | Box 133 \ 3 scan0232 | |
| Report on the performance of 2-stroke and 4-valve engines. | 14th Jul 1940 | Box 133 \ 3 scan0233 | |
| Oil cooler size for an 8-cylinder marine engine. | 14th Jul 1940 | Box 133 \ 3 scan0234 | |
| Chasing a flow test report for a Filter Assembly in order to settle a long-standing account. | 15th Jul 1940 | Box 133 \ 3 scan0235 | |
| Letter from Zenith Carburetter Co. Ltd. regarding the procurement of a carburetter from America and the related import license. | 15th Jul 1940 | Box 133 \ 3 scan0236 | |
| The parts required for a B.80 Marine engine crankcase dipstick assembly. | 15th Jul 1940 | Box 133 \ 3 scan0237 | |
| Prints for two of the latest Twin Disc Clutch Co's gearboxes, noting their unsuitability due to diameter. | 17th Jul 1940 | Box 133 \ 3 scan0238 | |
| Instructions regarding blueprints for a B.80 Marine engine oil pump assembly. | 17th Jul 1940 | Box 133 \ 3 scan0239 | |
| Letter from Solex Ltd. regarding the supply of a Twin Updraft Solex Carburettor and potential delivery delays. | 17th Jul 1940 | Box 133 \ 3 scan0240 | |
| Letter to Zenith Carburetter Co. Ltd. concerning the import of a U.R. carburetter from America for experimental use. | 18th Jul 1940 | Box 133 \ 3 scan0241 | |
| Letter to Solex, Ltd. suspending development work for the F.F.V.S. carburettor. | 22th Jul 1940 | Box 133 \ 3 scan0242 | |
| Letter from The Zenith Carburetter Co. Ltd. regarding an application for a licence to import a UUR carburetter. | 22th Jul 1940 | Box 133 \ 3 scan0243 | |
| Applications for extra petrol rations for five individuals. | 2nd Aug 1940 | Box 133 \ 3 scan0244 | |
| Designer staffing for marine work and instrument development for the Rippletto vehicle. | 12th Sep 1940 | Box 133 \ 3 scan0245 | |
| New drawing blueprints issued for a Dynamo & Salt Water Pump. | 8th Aug 1940 | Box 133 \ 3 scan0246 | |
| New parts required for a B.80 Marine engine, specifically for the header tank, intercooler, and water connections. | 2nd Oct 1940 | Box 133 \ 3 scan0247 | |
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