| Description | Date | Identifier | |
| Table of results from performance tests conducted on various magnetos. | 2nd Sep 1924 | Box 4 \ 5 05-page348 | |
| Test data table comparing magneto performance at various speeds, including voltage output and noise levels. | 25th Aug 1925 | Box 4 \ 5 05-page349 | |
| Modifications to the New Phantom magneto and a related ignition fault. | 25th Aug 1925 | Box 4 \ 5 05-page350 | |
| Negotiations for magnetos for EAC chassis and clarifying the required specifications. | 26th Aug 1925 | Box 4 \ 5 05-page351 | |
| Copy of a letter from The M.L. Magneto Synd. Ltd. regarding modifications to a six-cylinder magneto. | 29th Oct 1924 | Box 4 \ 5 05-page352 | |
| Graph of open circuit volt-speed and short circuit ampere-speed curves for B.T.H. and Watford magnetos. | 1st Dec 1925 | Box 4 \ 5 05-page353 | |
| Magnetos without automatic advance for the New Phantom chassis. | 1st Dec 1925 | Box 4 \ 5 05-page354 | |
| Comparing the bench test results, design, weight, and price of B.T.H. magnetos against a standard Watford machine. | 1st Dec 1925 | Box 4 \ 5 05-page355 | |
| Comparing the specifications and performance of Watford and B.T.H. magnetos. | 12th Dec 1925 | Box 4 \ 5 05-page356 | |
| Page detailing endurance, circuit, and utility tests on two magnetos. | 12th Dec 1925 | Box 4 \ 5 05-page357 | |
| Continuation detailing magneto spark gap and utility tests. | 1st Dec 1925 | Box 4 \ 5 05-page358 | |
| Comparing the high and low-speed sparking characteristics of different magnetos. | 8th Dec 1925 | Box 4 \ 5 05-page359 | |
| Continued experimental report on steering column backlash, with a later note on magneto noise comparison. | 10th Dec 1925 | Box 4 \ 5 05-page360 | |
| Curve showing the variation of DC volts with the position of a hand lever on a cam for a B.T.H. Magneto Type FM6. | 6th Feb 1923 | Box 4 \ 5 05-page361 | |
| Curve showing the variation of D.C. volts with cam lever position for a Watford Edge Magneto No. 7947C. | 1st Jan 1928 | Box 4 \ 5 05-page362 | |
| Cross-reference note for information on chassis magnetos. | 31th Dec 1930 | Box 4 \ 5 05-page363 | |
| Complaints of noise and excessive end-play in front spring shackles on high-speed cars. | 15th Apr 1921 | Box 4 \ 6 06-page01 | |
| Persistent issues with rear spring shackle lubrication and proposing the development of an improved system. | 10th May 1921 | Box 4 \ 6 06-page02 | |
| The difficulties of forcing grease through shackles and a recommendation for using a strong grease gun. | 10th May 1921 | Box 4 \ 6 06-page03 | |
| Agreeing with a suggestion to install hardened washers on front springs to reduce wear. | 10th May 1921 | Box 4 \ 6 06-page04 | |
| Extract discussing end play limits and testing for spring shackles. | 3rd Aug 1921 | Box 4 \ 6 06-page05 | |
| Inter-office correspondence concerning spring shackle rattles and an investigation into Belflex non-metallic shackles. | 9th Jun 1922 | Box 4 \ 6 06-page06 | |
| Alternative spring suspension and shackle designs to address lubrication and rattling issues. | 9th Jun 1922 | Box 4 \ 6 06-page07 | |
| Shackle lubrication methods, comparing different lubricators and proposing alternative schemes. | 9th Jun 1922 | Box 4 \ 6 06-page08 | |
| Lubrication scheme for various car parts using selector rods as pumps, and referencing a pending U.S. patent. | 9th Jun 1922 | Box 4 \ 6 06-page09 | |
| Sketch of a typical American adjustable spring shackle. | 9th Jun 1922 | Box 4 \ 6 06-page10 | |
| Rough sketch comparing a Sheldon spring without shackles to Mack bus shackles. | 9th Jun 1922 | Box 4 \ 6 06-page11 | |
| Sketch of a Belflex shackle for the front and rear springs of a Willys-Knight experimental car. | 28th Dec 1922 | Box 4 \ 6 06-page12 | |
| Concerns over shackle and footbrake squeaks on 20 HP demonstration cars. | 28th Dec 1922 | Box 4 \ 6 06-page13 | |
| Letter from The Rubber Shock Insulator Company regarding their rubber shackle bolts and enclosing a blueprint. | 2nd Jan 1923 | Box 4 \ 6 06-page14 | |
| The distribution of a document and photographs concerning rubber shackles. | 12th Jun 1923 | Box 4 \ 6 06-page15 | |
| Letter detailing the performance of rubber shackles fitted to a Hupmobile car. | 1st Jun 1925 | Box 4 \ 6 06-page16 | |
| The design and performance of rubber shackles for vehicle suspension systems. | 1st Jun 1925 | Box 4 \ 6 06-page17 | |
| Spring experiments on 20 HP and 40/50 models and requesting permission to submit prints to makers. | 1st Jun 1925 | Box 4 \ 6 06-page18 | |
| Photograph showing the rear three-quarter view of a vintage saloon car on a ramp. | 10th Aug 1923 | Box 4 \ 6 06-page20 | |
| Rubber shackles, forwarding a copy of a document received from Springfield. | 10th Aug 1923 | Box 4 \ 6 06-page21 | |
| Letter detailing the contents of two parcels containing blueprints and photographs regarding rubber shackles. | 21th Jul 1925 | Box 4 \ 6 06-page22 | |
| The function of rubber blocks in a suspension system and the potential cost of an experiment. | 20th Aug 1923 | Box 4 \ 6 06-page23 | |
| From B.J. to H. attaching a letter received from Springfield regarding shackles. | 20th Aug 1923 | Box 4 \ 6 06-page24 | |
| Letter from F.W. Taylor requesting an interview with Mr. Royce and enclosing a letter of introduction from the International Motor Company. | 26th Sep 1920 | Box 4 \ 6 06-page25 | |
| Letter of introduction for a young engineering student returning to England with samples of rubber shackles. | 27th Aug 1923 | Box 4 \ 6 06-page26 | |
| Letter regarding the receipt of rubber shackle samples and information from R-R (America) Inc. | 1st Oct 1923 | Box 4 \ 6 06-page27 | |
| Standardisation of a rear spring shackle to provide more wearing surface. | 26th Sep 1923 | Box 4 \ 6 06-page28 | |
| Communication regarding a lost Mackenzie's change speed fan drive and the status of spring shackles. | 1st Feb 1924 | Box 4 \ 6 06-page29 | |
| Fan drive experiment proposal and the decision against testing spring shackles. | 14th Feb 1924 | Box 4 \ 6 06-page30 | |
| Acquiring and testing American-designed rubber shackles for the 40/50 car. | 1st Jan 1924 | Box 4 \ 6 06-page31 | |
| Chasing a promised set of Rubber Shackle parts for the 40/50 HP model. | 12th Jun 1924 | Box 4 \ 6 06-page32 | |
| Calculations for front spring stiffness, considering factors like encastrement and shackle inclination. | 9th Jun 1926 | Box 4 \ 6 06-page33 | |
| Letter from the American branch to the UK discussing Belflex shackles and their potential to eliminate front-end shimmy. | 28th Apr 1928 | Box 4 \ 6 06-page34 | |
| Letter from Maurice Olley to E. W. Hives regarding rubber mountings in American automotive practice. | 14th Jul 1926 | Box 4 \ 6 06-page35 | |
| Article from 'Automotive Industries' detailing the design and features of a new Mack gas-electric bus. | 22th Apr 1926 | Box 4 \ 6 06-page36 | |
| Patent for improvements in motor vehicle road spring attachments. | 10th Jun 1927 | Box 4 \ 6 06-page37 | |
| Patented arrangement by Springfield, its similarity to an Australian suggestion, and plans to test shackles on experimental cars. | 18th Jun 1927 | Box 4 \ 6 06-page38 | |
| Letter to Mr. Douglas Robertson in Australia declining his submitted design for a spring shackle due to a pre-existing patent and similar internal development. | 13th Apr 1927 | Box 4 \ 6 06-page39 | |
| Drawing of a front spring shackle assembly, including the front horn and shackle components. | 14th Sep 1925 | Box 4 \ 6 06-page40 | |
| Querying a potential clerical error regarding a date, with a handwritten annotation confirming the correct year. | 14th Jun 1927 | Box 4 \ 6 06-page41 | |
| Letter from B. Johnson to Mr. Claremont enclosing a copy of a letter and a memorandum from other parties. | 14th Jun 1927 | Box 4 \ 6 06-page42 | |
| Requesting a correction of a date from 1927 to 1917 in a letter to Mr. Douglas Robertson. | 15th Jun 1927 | Box 4 \ 6 06-page43 | |
| Inquiry to Delaunay-Belleville Motors regarding their spring-loaded shackle to cure steering road shocks. | 8th May 1931 | Box 4 \ 6 06-page44 | |
| Letter to Delaunay-Bellville Motors Ltd. regarding a spring loaded shackle to cure steering road shocks. | 9th May 1931 | Box 4 \ 6 06-page45 | |
| Letter from Delaunay Belleville Motors Ltd. regarding a patented spring-loaded shackle to prevent 'shimmy'. | 11th May 1931 | Box 4 \ 6 06-page46 | |
| Follow-up letter to Delaunay Belleville Motors chasing for information from their French counterpart. | 21th May 1931 | Box 4 \ 6 06-page47 | |
| Letter regarding Delco Shock Absorbers, shimmy shackles, and synchro-mesh gearboxes. | 21th May 1931 | Box 4 \ 6 06-page48 | |
| Letter from Cadillac Motor Car Company regarding testing and development of shock absorbers. | 12th May 1931 | Box 4 \ 6 06-page49 | |
| Technical comparison of synchro mesh gearboxes and steering systems from Buick and other American manufacturers. | 12th May 1931 | Box 4 \ 6 06-page50 | |
| Vehicle dynamics, including shimmy, frame stiffness, and vibration frequencies. | 12th May 1931 | Box 4 \ 6 06-page51 | |
| Analysis of vehicle chassis dynamics, frame stiffness, and the effects of damping. | 15th Jun 1931 | Box 4 \ 6 06-page52 | |
| Request to produce a modified flexible spring shackle for comparative testing on a 25-EX vehicle. | 15th Jun 1931 | Box 4 \ 6 06-page53 | |
| Request for a catalogue and sample of oil-less bushes for the Peregrine project, specifying the 'silent bloc' type. | 16th Dec 1931 | Box 4 \ 6 06-page54 | |
| Outlining two schemes for oil-less bushes, one using bronze with graphite and the other using solid rubber shackles. | 14th Dec 1931 | Box 4 \ 6 06-page55 | |
| The suitability of oil-less bushes for heavy loads, with reference to the 'Silent bloc' scheme used by Delage. | 23th Dec 1931 | Box 4 \ 6 06-page56 | |
| Decision to permanently fit flexible spring shackles based on trials and a request to prepare three more sets. | 4th Mar 1932 | Box 4 \ 6 06-page57 | |
| Fitting of a spring shackle for steering joggles on models P.2, J.3, & J.1. | 7th Mar 1932 | Box 4 \ 6 06-page58 | |
| Experiments on exhaust silencers, steering modifications, and flexible shackle suspension. | 14th Apr 1932 | Box 4 \ 6 06-page59 | |
| Proposal and discussion regarding a spring-controlled rear shackle for front springs on the P.2 model. | 15th Apr 1932 | Box 4 \ 6 06-page60 | |
| Alternative design suggestions for a spring-controlled rear shackle for front springs. | 15th Apr 1932 | Box 4 \ 6 06-page61 | |
| Drawbacks in the design of a spring cantilever rear shackle for the 10 HP Royce car. | 22th Apr 1932 | Box 4 \ 6 06-page62 | |
| Fitting of a flexible shackle to car 24-EX. | 28th Apr 1932 | Box 4 \ 6 06-page63 | |
| Fitting of a flexible spring shackle to car 24-EX. | 28th Apr 1932 | Box 4 \ 6 06-page64 | |
| Standardisation report for a 40/50 HP Shimmy Shackle designed to reduce road shocks. | 27th Jun 1932 | Box 4 \ 6 06-page65 | |
| Introduction of a new part to a chassis for testing, including costs and dates. | 3rd Sep 1932 | Box 4 \ 6 06-page66 | |
| Instruction to replace the No.2 bijur with a No.3 to fix failing lubrication on rear road springs. | 10th Jan 1933 | Box 4 \ 6 06-page67 | |
| Page with the handwritten number 441 at the top. | 17th Aug 1910 | Box 4 \ 7 07-page01 | |
| Inquiry regarding royalty payments made by the New Engine Company to Lanchester for car springs. | 17th Aug 1910 | Box 4 \ 7 07-page02 | |
| Letter from 'The Auto' magazine discussing royalty payments and the differences between N.F.C. and Lanchester suspension systems. | 29th Sep 1910 | Box 4 \ 7 07-page03 | |
| Dynamometer test report for a 6-cylinder Silver Ghost chassis. | 5th Feb 1912 | Box 4 \ 7 07-page04 | |
| Note concerning the Lanchester plate clutch, initiated by a question from Mr. Royce. | 5th Feb 1912 | Box 4 \ 7 07-page05 | |
| Request to obtain specific lubricating oil for a Lanchester chassis and Daimler. | 8th Feb 1912 | Box 4 \ 7 07-page06 | |
| Report by Mr Royce and Mr Platford on a 38 HP 6-Cylinder Lanchester Car. | 8th Mar 1912 | Box 4 \ 7 07-page07 | |
| Continuation of a report detailing issues and opinions on the 38 HP 6-cylinder Lanchester Car. | 1st Apr 1912 | Box 4 \ 7 07-page08 | |
| Further report on the Lanchester Car, detailing its epicyclic gear and engine characteristics. | 8th Mar 1912 | Box 4 \ 7 07-page09 | |
| Engineering report detailing issues with crankshaft dampers, worm gears, brakes, axles, and steering components. | 14th Feb 1927 | Box 4 \ 7 07-page10 | |
| Use of flat races versus hollow recessed races in thrust ball bearings. | 8th Mar 1912 | Box 4 \ 7 07-page11 | |
| Lanchester back axle oil and a request for a Ford instruction book. | 8th Mar 1912 | Box 4 \ 7 07-page12 | |
| Request to analyze a sample of oil used in a Lanchester back axle to determine its composition. | 13th Mar 1912 | Box 4 \ 7 07-page13 | |
| Letter from the Midland Counties Motor Garage Company regarding an enquiry for Lanchester oil and a Ford instruction book. | 11th Mar 1912 | Box 4 \ 7 07-page14 | |
| Dynamometer test report for a chassis, detailing engine horsepower at various RPMs and other performance metrics. | 9th Mar 1912 | Box 4 \ 7 07-page15 | |
| Driving a Lanchester chassis, focusing on the worm axle and epicyclic charge speed gear. | 19th Mar 1912 | Box 4 \ 7 07-page16 | |
| Brief typed memo concluding a discussion on horsepower standards. | 21th Jan 1920 | Box 4 \ 7 07-page17 | |
| Inspection report on the condition and weight of engine and transmission components, and the general state of a vehicle upon arrival. | 21th Jan 1920 | Box 4 \ 7 07-page18 | |
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