| Description | Date | Identifier | |
| Letter from The Zenith Carburetter Co. Ltd regarding a drawing for a choke spindle lever for carburetters. | 8th Feb 1941 | Box 122 \ 3 scan0249 | |
| Letter from Zenith Carburetter Co. Ltd. outlining proposals for the AAV-25 carburetter. | 7th Mar 1941 | Box 122 \ 3 scan0250 | |
| Specification sheet from Zenith Carburetter Co. detailing carburetter components and settings. | 7th Mar 1941 | Box 122 \ 3 scan0251 | |
| Letter from Zenith Carburetter Co. detailing proposed modifications for sample carburettors. | 7th Mar 1941 | Box 122 \ 3 scan0252 | |
| Letter from Zenith Carburetter Co. regarding a pump operating lever, with extensive handwritten annotations about system modifications. | 28th Dec 1928 | Box 122 \ 3 scan0253 | |
| Letter to The Zenith Carburetter Co. Ltd. providing feedback on specific items for the AAV.25 carburettors. | 13th Mar 1941 | Box 122 \ 3 scan0254 | |
| Letter detailing requested modifications to carburetter levers and confirming an order for a specific carburetter model and testing equipment. | 13th Mar 1941 | Box 122 \ 3 scan0255 | |
| Letter from The Zenith Carburetter Co. Ltd. regarding carburetter specifications and production. | 18th Mar 1941 | Box 122 \ 3 scan0256 | |
| Letter to The Zenith Carburetter Co. discussing the production and testing of parts for the Kestrel X Carburetter. | 15th Jun 1941 | Box 122 \ 3 scan0257 | |
| Letter discussing production schedules, material specifications, and alterations to parts. | 15th Jun 1941 | Box 122 \ 3 scan0258 | |
| Letter to the Zenith Carburetter Co. regarding the manufacture and modification of carburetter parts. | 15th Jun 1941 | Box 122 \ 3 scan0259 | |
| Letter discussing production planning, design alterations, and trial part specifications. | 15th Jun 1941 | Box 122 \ 3 scan0260 | |
| Letter to The Zenith Carburetter Co. regarding the despatch of Kestrel I carburettors and parts for modification. | 16th Jun 1941 | Box 122 \ 3 scan0261 | |
| Letter to the Zenith Carburetter Co. regarding the despatch of four Kestrel X Carburetters for modification. | 16th Jun 1941 | Box 122 \ 3 scan0262 | |
| Letter to Zenith Carburetter Co., Ltd. detailing modifications to a carburetter for the Meteor engine. | 27th Jun 1941 | Box 122 \ 3 scan0263 | |
| Letter discussing the development of starting chokes and modifications for Kestrel carburettors. | 27th Jun 1941 | Box 122 \ 3 scan0264 | |
| Letter to Zenith Carburetter Co. discussing the design, casting, and testing of carburetter components. | 19th Jul 1941 | Box 122 \ 3 scan0265 | |
| Page 2 of a letter about drawings and parts lists for an induction system. | 19th Jul 1941 | Box 122 \ 3 scan0266 | |
| Letter to the Zenith Carburetter Co. requesting detail drawings and an expected dispatch date for 60.DCE carburetters. | 30th Jul 1941 | Box 122 \ 3 scan0267 | |
| Letter to Zenith Carburetter Co. confirming modifications for the carburetter type 60 D.C.B. | 5th Sep 1941 | Box 122 \ 3 scan0268 | |
| The second page of a typed letter concerning carburetters, signed by C.T. Salt. | 5th Sep 1941 | Box 122 \ 3 scan0269 | |
| Letter to Zenith Carburetter Co. Ltd. regarding a £2.0s.6d account for carburetter jets. | 10th Nov 1941 | Box 122 \ 3 scan0270 | |
| Invoice from the Zenith Carburetter Co. for tools and carburetters, seeking approval for payment. | 10th Nov 1941 | Box 122 \ 3 scan0271 | |
| Letter from Zenith Carburetter Co. Ltd regarding an invoice for two AAV-25 Carburetters and spare barrels. | 4th Nov 1941 | Box 122 \ 3 scan0272 | |
| Delayed invoice payment for two Zenith carburetters. | 15th Dec 1941 | Box 122 \ 3 scan0273 | |
| Requesting a covering order for two Zenith type AA.25 carburettors. | 17th Dec 1941 | Box 122 \ 3 scan0274 | |
| Extract regarding carburetter modifications for the American model. | 27th Sep 1919 | Box 122 \ 4 scan0001 | |
| Manufacturing policy for American chassis, continuing right-hand drive production and halting left-hand drive work. | 31th Oct 1919 | Box 122 \ 4 scan0002 | |
| Carburetter Proposal Sheet No. 9 and an attached drawing. | 12th Nov 1923 | Box 122 \ 4 scan0003 | |
| Letter regarding Carburetter Proposal Sheet No.9, awaiting an unreceived drawing for a needle valve alteration. | 30th Oct 1925 | Box 122 \ 4 scan0004 | |
| Letter discussing the momentary sluggishness in acceleration of the 40/50 and Phantom models due to carburation. | 27th Dec 1926 | Box 122 \ 4 scan0005 | |
| Potential improvements for engine performance related to intake pipes, fuel pumps, carburetters, and starting. | 27th Dec 1926 | Box 122 \ 4 scan0006 | |
| Proposing a standard change to the air-cleaner to prevent the air valve from sticking. | 27th Dec 1926 | Box 122 \ 4 scan0007 | |
| Letter from Maurice Olley discussing a modification to the carburetter suction chamber by adding slots and its testing results. | 24th May 1927 | Box 122 \ 4 scan0008 | |
| Service installation diagram for an air cleaner. | 28th Jul 1927 | Box 122 \ 4 scan0009 | |
| Technical drawing for a suction chamber. | 28th Dec 1926 | Box 122 \ 4 scan0010 | |
| Letter discussing a change in material for carburetter air valves from aluminum to duralumin. | 26th May 1927 | Box 122 \ 4 scan0011 | |
| To abandon an experiment on aluminum alloy suction chambers due to repeated seizing, and to continue with valve tests. | 17th May 1929 | Box 122 \ 4 scan0012 | |
| Alteration report detailing experiments on carburetter springs and air valve housing materials. | 10th Jun 1929 | Box 122 \ 4 scan0013 | |
| Copy of an 'Automotive Industries' article detailing the development of a Wheeler-Schebler carburetor. | 9th Nov 1934 | Box 122 \ 4 scan0014 | |
| The operation and features of a suction-controlled carburetor, including its piston, gaskets, accelerating device, and dash control. | 9th Nov 1934 | Box 122 \ 4 scan0015 | |
| Page describing a choke disk and a warming-up system, with a sectioned view diagram of a valve arrangement. | 9th Nov 1934 | Box 122 \ 4 scan0016 | |
| Diagrams of a Schebler Model T Carburetor, showing a general view and a vertical section. | 27th Mar 1935 | Box 122 \ 4 scan0017 | |
| Letter from Bendix Limited regarding an EE-3 carburetter and enclosing a blue print. | 27th Mar 1935 | Box 122 \ 4 scan0018 | |
| Letter to Bendix Ltd. regarding a drawing of a carburetter fitted to a Packard Twin 6. | 29th Mar 1935 | Box 122 \ 4 scan0019 | |
| Article describing the design and operation of the 'Convac' carburettor. | 7th Mar 1914 | Box 122 \ 4 scan0020 | |
| Magazine article detailing the features of the 'Convac' carburettor and the 'Bijou Reliance' horn. | 7th Mar 1914 | Box 122 \ 4 scan0021 | |
| Letter from Stanley J. Watson offering a Stromberg carburetter for testing and quoting a price for Carpentier Spark Plugs. | 16th Mar 1920 | Box 122 \ 4 scan0022 | |
| New carburetter offered by a long-standing customer and patentee for trial. | 13th Jun 1922 | Box 122 \ 4 scan0023 | |
| Letter declining the offer of a Maxima Carburetter blueprint after examination. | 14th Jun 1922 | Box 122 \ 4 scan0024 | |
| Recommendation to obtain descriptive material on a carburetter from Arnott before entering into an obligation. | 9th Sep 1922 | Box 122 \ 4 scan0025 | |
| Letter from F.H. Arnott Ltd. promoting their CarburVac self-feeding carburettor. | 20th Oct 1922 | Box 122 \ 4 scan0026 | |
| Article describing the design and operation of the 'Carburvac', a combined carburetter and vacuum fuel feed system. | 1st Oct 1921 | Box 122 \ 4 scan0027 | |
| Article describing a suction-fed carburetter that combines carburetter and vacuum fuel supply functions. | 1st Nov 1921 | Box 122 \ 4 scan0028 | |
| Cover page for a leaflet on the Ford Self-feeding CARBURVAC Carburetter. | 1st Nov 1921 | Box 122 \ 4 scan0029 | |
| Summary of advantages for the CarburVac product, detailing consumption, features, and price. | 10th Nov 1922 | Box 122 \ 4 scan0030 | |
| Letter to 'Carbur Vac' requesting clarification on carburetter adjustments for slow running. | 10th Nov 1922 | Box 122 \ 4 scan0031 | |
| Letter from F. H. Arnott Ltd. regarding the adjustment of their self-feeding carburetter. | 15th Nov 1922 | Box 122 \ 4 scan0032 | |
| Article describing the working principle, setting, and testing of the Carburvac, a new vacuum feed carburetter. | 3rd Oct 1921 | Box 122 \ 4 scan0033 | |
| Internal memorandum discussing the unsuitability of the 'Maxima' carburetter for their cars. | 12th Dec 1922 | Box 122 \ 4 scan0034 | |
| Letter of inquiry regarding the makers and literature for the Memi Carburetter. | 2nd Oct 1924 | Box 122 \ 4 scan0035 | |
| Letter from Süddeutsche Bremsen-Aktiengesellschaft regarding the 'Orkan' Carburetor and its different types. | 4th Mar 1927 | Box 122 \ 4 scan0036 | |
| Promotional letter from Süddeutsche Bremsen-A.G. about their 'Orkan' carburetor. | 11th Sep 1927 | Box 122 \ 4 scan0037 | |
| Leaflet detailing the scheme of throttle working, fitting instructions, and adjustment for the Orkan Small-Car Carburetor Type 'K'. | 11th Sep 1927 | Box 122 \ 4 scan0038 | |
| Descriptive leaflet for the Orkan carburetor, detailing its principles, components, and mode of operation. | 11th Sep 1927 | Box 122 \ 4 scan0039 | |
| Brochure for the Orkan Type 'R' carburetor for motor-cycles, detailing its operation, fitting, and adjustment. | 11th Sep 1927 | Box 122 \ 4 scan0040 | |
| Leaflet describing the principles, construction, and operation of the 'Orkan' carburetor for motorcycles. | 11th Sep 1927 | Box 122 \ 4 scan0041 | |
| Instruction leaflet for the 'Orkan' universal carburetor, type U, detailing its working, fitting, adjustment, and operation. | 11th Sep 1927 | Box 122 \ 4 scan0042 | |
| Brochure detailing the principles, description, and features of the 'Orkan' universal carburetor. | 11th Sep 1927 | Box 122 \ 4 scan0043 | |
| Blank questionnaire from Sueddeutsche Bremsen A.-G. for motor specifications related to an 'Orkan' carburettor. | 11th Sep 1927 | Box 122 \ 4 scan0044 | |
| Collection of customer testimonials for the 'Orkan' Carburetor. | 11th Sep 1927 | Box 122 \ 4 scan0045 | |
| Page of quotes regarding carburetor manufacturing, testing, and performance. | 7th Mar 1927 | Box 122 \ 4 scan0046 | |
| Letter to Sueddeutsche Bremsen A-G regarding their 'Orkan' Carburetter. | 7th Mar 1927 | Box 122 \ 4 scan0047 | |
| New Stewart Warner carburettor and fuel system devices. | 5th Jul 1928 | Box 122 \ 4 scan0048 | |
| Concluding page of a letter regarding advertising matter and samples. | 30th Oct 1929 | Box 122 \ 4 scan0049 | |
| Letter confirming the rejection of Seignol's carburettor design due to insurmountable obstacles. | 30th Oct 1929 | Box 122 \ 4 scan0050 | |
| Internal request to obtain particulars of a vertical carburetter for a 3.5-litre engine. | 3rd Oct 1931 | Box 122 \ 4 scan0051 | |
| Cover letter forwarding information and a performance curve for a new Bleriot aircraft carburetter. | 1st Jan 1932 | Box 122 \ 4 scan0052 | |
| Performance graph showing power and consumption results for Professor Schimanek's new aviation carburetor. | 12th Nov 1931 | Box 122 \ 4 scan0053 | |
| Reporting a hesitation issue, possibly due to carburation, on car 22-EX after 'luffing up'. | 12th Jan 1934 | Box 122 \ 4 scan0054 | |
| Carburetter hesitation issue after 'luffing up' which has since been resolved. | 15th Jan 1934 | Box 122 \ 4 scan0055 | |
| Offer to test a patented carburetter from a Mr. Jas. Marchbank. | 18th Jul 1934 | Box 122 \ 4 scan0056 | |
| Copy of a letter from an inventor, Mr. J. Marchbank, promoting his patented carburetter. | 16th Jul 1934 | Box 122 \ 4 scan0057 | |
| Patented carburetter and related correspondence with Mr. J. Marchbank. | 19th Jul 1934 | Box 122 \ 4 scan0058 | |
| Letter responding to an offer to loan a patented carburetter for testing purposes. | 21th Jul 1934 | Box 122 \ 4 scan0059 | |
| Follow-up request for information regarding a patented carburetter. | 30th Jul 1934 | Box 122 \ 4 scan0060 | |
| Following up on a request for particulars of a patented carburetter. | 31th Jul 1934 | Box 122 \ 4 scan0061 | |
| Requesting an update on a patented carburetter, referencing previous correspondence. | 27th Aug 1934 | Box 122 \ 4 scan0062 | |
| Assuming the matter regarding Patented Carburetter No.18801/34 is dropped due to a lack of communication. | 30th Aug 1934 | Box 122 \ 4 scan0063 | |
| Query requesting a report on the patented carburetter No.18801/34. | 6th Nov 1934 | Box 122 \ 4 scan0064 | |
| Patented carburetter No. 18801/34. | 7th Nov 1934 | Box 122 \ 4 scan0065 | |
| Request for particulars on downdraught carburetters from R.A.G., Zenith, Amal and Solex. | 11th Jan 1935 | Box 122 \ 4 scan0066 | |
| Investigation into an 8-cylinder Buick carburetter and the ordering of a Marvel carburetter from America. | 15th Jan 1935 | Box 122 \ 4 scan0067 | |
| Technical review of the carburetter performance on an 8-Cylinder Buick. | 15th Jan 1935 | Box 122 \ 4 scan0068 | |
| Description of the carburetter's internal mechanism and fuel mixture control at various throttle settings. | 15th Jan 1935 | Box 122 \ 4 scan0069 | |
| Description of a carburetter's slow running arrangement and its disadvantages. | 15th Jan 1935 | Box 122 \ 4 scan0070 | |
| Letter from a law firm asking to verify a man and his carburetter using a provided reference number. | 11th Feb 1935 | Box 122 \ 4 scan0071 | |
| Letter to G.P.R. Balfour-Kinnear regarding correspondence with a Mr. Marchbank. | 25th Feb 1935 | Box 122 \ 4 scan0072 | |
| Requesting help to identify a Bentley owner for whom carburetter measurements were being taken by R.A.G. Ltd. | 13th Mar 1935 | Box 122 \ 4 scan0073 | |
| Visit from R.A.G. Ltd about their carburetters. | 18th Mar 1935 | Box 122 \ 4 scan0074 | |
| | | | |
