| Description | Date | Identifier | |
| Broken cross member flanges and suggestions for redesigning the mounting brackets. | 25th Feb 1914 | Box 80 \ 3 scan0017 | |
| Potential modification to the bracket for the rear springs of car 2704. | 25th Feb 1914 | Box 80 \ 3 scan0018 | |
| Kitching's report on chassis 4.bA with a satisfactory result. | 25th Feb 1916 | Box 80 \ 3 scan0019 | |
| Instruction and strength testing of a new front anchorage and shackle for a rear spring. | 27th Feb 1914 | Box 80 \ 3 scan0020 | |
| Modifications to the propeller shaft, cross member, and rear spring anchorage. | 2nd Mar 1914 | Box 80 \ 3 scan0021 | |
| Bumping test on rear chassis frame brackets, proposals for strengthening broken parts, and a new design. | 5th Mar 1914 | Box 80 \ 3 scan0022 | |
| Bumping test of the rear of a chassis to test the forward frame brackets of the rear springs. | 6th Mar 1914 | Box 80 \ 3 scan0023 | |
| The bumping test of the rear chassis, specifically testing the forward frame brackets of the rear springs. | 6th Mar 1914 | Box 80 \ 3 scan0024 | |
| Testing and potential standardization of an alteration to the anchorage for rear springs. | 10th Feb 1914 | Box 80 \ 3 scan0025 | |
| Delivery and satisfactory testing of rear spring brackets, piece No. F.4218. | 17th Mar 1914 | Box 80 \ 3 scan0026 | |
| Request for a copy of a report on axle bumping tests to aid in the design of a new axle. | 16th Mar 1914 | Box 80 \ 3 scan0027 | |
| Bumping test of rear of chassis to test the forward frame brackets of rear springs. | 17th Mar 1914 | Box 80 \ 3 scan0028 | |
| Test report detailing component failures and observations on the chassis and suspension after running. | 16th Mar 1914 | Box 80 \ 3 scan0029 | |
| Request for a copy of a dynamometer test report showing axle weakness, needed for designing a new axle. | 16th Mar 1914 | Box 80 \ 3 scan0030 | |
| Correspondence regarding a new bracket for the front end of the rear springs, referencing drawings F.4938 and leC102. | 18th Mar 1914 | Box 80 \ 3 scan0031 | |
| Clarifying a part number for a rear spring bracket and reporting on the results of a bumping test. | 18th Mar 1914 | Box 80 \ 3 scan0032 | |
| Modifications to suspension to improve ride quality, addressing chassis drumming and testing severity. | 21th Mar 1914 | Box 80 \ 3 scan0033 | |
| Attaching a report regarding a Bumping Test. | 23th Mar 1914 | Box 80 \ 3 scan0034 | |
| Design changes to the rear spring anchor fitting to reduce stress and weight. | 24th Mar 1914 | Box 80 \ 3 scan0035 | |
| From 'R' to 'J' discussing the design and reinforcement of spring plates for weight economy. | 24th Mar 1914 | Box 80 \ 3 scan0036 | |
| Alterations to the front anchorage of rear springs and designing new springs for the Northcliffe Chassis. | 2nd Apr 1914 | Box 80 \ 3 scan0037 | |
| Recommendation to alter the manufacturing process for the front anchorage of rear springs, referencing blueprint F.4932. | 22th Apr 1914 | Box 80 \ 3 scan0038 | |
| Rear spring suspension fitted to a chassis and its corresponding drawing. | 12th May 1914 | Box 80 \ 3 scan0039 | |
| Extract from Warwick's report on the suspension and ride quality of car 58NA after a 3080-mile run. | 29th Jun 1914 | Box 80 \ 3 scan0040 | |
| Instructions with diagrams for alterations to the undersheet supporting strip and G.B. undersheet. | 28th Jul 1914 | Box 80 \ 3 scan0041 | |
| The performance of rear spring anchorage on Chassis 58 NA. | 4th Jul 1914 | Box 80 \ 3 scan0042 | |
| Bracket F.4932 for carrying the forward ends of the rear springs. | 10th Sep 1914 | Box 80 \ 3 scan0043 | |
| Bracket F.4932 for carrying the forward ends of the rear springs. | 10th Sep 1914 | Box 80 \ 3 scan0044 | |
| Alteration to Swivel Bracket F.4952 for the centre of rear springs, aiming to reduce its weight. | 10th Sep 1914 | Box 80 \ 3 scan0045 | |
| Three broken axle brackets from a bumping machine test, with suggestions for improvements for military service vehicles. | 2nd Mar 1915 | Box 80 \ 3 scan0046 | |
| Component failures during rear axle and chassis testing on a bumping machine. | 10th Mar 1915 | Box 80 \ 3 scan0047 | |
| Modifications and tests for the rear spring and axle to reduce stress. | 10th Mar 1915 | Box 80 \ 3 scan0048 | |
| Abnormal stress on parts, proposing modifications to a cross member tube and requesting new arrangement drawings. | 12th Mar 1915 | Box 80 \ 3 scan0049 | |
| Cause of breakage on a Bumping Machine's rear spring and a proposed design improvement. | 12th Mar 1915 | Box 80 \ 3 scan0050 | |
| Letter discussing the failure of a frame and brackets on a bumping machine. | 15th Mar 1915 | Box 80 \ 3 scan0051 | |
| Axle side-to-side movement and a proposal to transfer springs below the axle. | 1st Mar 1920 | Box 80 \ 3 scan0052 | |
| Explaining the history and reasoning for using solid eyes on rear springs. | 1st Mar 1920 | Box 80 \ 3 scan0053 | |
| Use and retention of leather packings under rear springs for car leveling purposes. | 16th Jul 1914 | Box 80 \ 3 scan0054 | |
| The use and purpose of leather packings under rear springs. | 22th Jul 1914 | Box 80 \ 3 scan0055 | |
| Brief internal note regarding an unspecified item that worked and was easily obtained. | 22th Jul 1914 | Box 80 \ 3 scan0056 | |
| Chassis lowering modifications for 20-HP and Phantom models by reducing packings. | 17th Nov 1927 | Box 80 \ 3 scan0057 | |
| Internal request to order four Watson Stabilators from the John Warren Watson Co. for testing purposes. | 13th Sep 1922 | Box 80 \ 3 scan0058 | |
| Booklet on Watson Stabilators and their successful trial on a 40/50 car. | 26th Sep 1922 | Box 80 \ 3 scan0059 | |
| Test report on the steering, suspension and performance of the No. 6 Goshawk car. | 10th Sep 1922 | Box 80 \ 3 scan0060 | |
| Returning a booklet on the Watson Stabilator, noting its superiority over Gabriel Snubbers. | 13th Oct 1922 | Box 80 \ 3 scan0061 | |
| Order for 4 Watson Stabilators and a delay from the Springfield branch. | 2nd Nov 1922 | Box 80 \ 3 scan0062 | |
| Letter regarding a delay in shipping Watson stabilators due to the John Warren Watson Co. failing to provide necessary invoices. | 10th Jan 1923 | Box 80 \ 3 scan0063 | |
| Inquiry regarding the delivery of Watson Stabilators and thermostats from the Fulton Co. | 31th Jan 1923 | Box 80 \ 3 scan0064 | |
| Test report on special Woodhead front springs with rubber pads, detailing failures during a bumper test and comparing weight. | 24th Jul 1928 | Box 80 \ 3 scan0065 | |
| Recent spring tests, their durability, and methods to eliminate squeaks. | 24th Jul 1928 | Box 80 \ 3 scan0066 | |
| Blueprint of a 'Woodhead Special' leaf spring assembly with failure analysis notes. | 16th Oct 1928 | Box 80 \ 3 scan0067 | |
| Summarising the life and testing of four pairs of American type springs, comparing their performance and weight. | 16th Oct 1928 | Box 80 \ 3 scan0068 | |
| Correspondence regarding four broken tappet springs from car 2579, and an inquiry about their performance on a testing rig to determine if the design is at fault. | 2nd Jan 1914 | Box 80 \ 3 scan0069 | |
| Page requesting a report from the makers, with a handwritten note regarding no trouble with breakings. | 2nd Jan 1914 | Box 80 \ 3 scan0070 | |
| Responding to a query about the reliability of Tappet Springs. | 28th Jan 1914 | Box 80 \ 3 scan0071 | |
| Responding to a report on Tappet Spring Breakages, outlining actions for inspection and testing. | 22th Dec 1920 | Box 80 \ 3 scan0072 | |
| Instruction card for the supply of valve springs to the test department. | 27th Jan 1911 | Box 80 \ 3 scan0073 | |
| Two proposals for modifying valve springs. | 15th Sep 1911 | Box 80 \ 3 scan0074 | |
| Departmental memo discussing and comparing the stresses on standard and proposed valve springs. | 28th Sep 1911 | Box 80 \ 3 scan0075 | |
| Record card detailing information and reports regarding valve springs. | 6th Oct 1911 | Box 80 \ 3 scan0076 | |
| Specifications and test results for two types of valve springs. | 7th Nov 1911 | Box 80 \ 3 scan0077 | |
| Specifications for an experimental component, detailing its dimensions, convolutions, and performance under compression. | 17th Nov 1911 | Box 80 \ 3 scan0078 | |
| Departmental memo requesting a new valve spring design and the handwritten response explaining why it's not possible. | 17th Nov 1911 | Box 80 \ 3 scan0079 | |
| Meeting minutes discussing breakages and potential design improvements for valve springs. | 8th Jan 1912 | Box 80 \ 3 scan0080 | |
| Meeting notes discussing new valve spring designs, experimental orders, and a failure on car 1698. | 6th Dec 1911 | Box 80 \ 3 scan0081 | |
| Valve spring breakages related to a new camshaft type, proposed testing, and potential replacement. | 1st Oct 1937 | Box 80 \ 3 scan0082 | |
| Meeting notes discussing valve spring breakages and softness issues. | 13th Dec 1911 | Box 80 \ 3 scan0083 | |
| Meeting minutes discussing the tempering, breakage, and testing of valve springs. | 18th Dec 1911 | Box 80 \ 3 scan0084 | |
| Instruction card for the supply of experimental valve springs and associated parts. | 5th Dec 1911 | Box 80 \ 3 scan0085 | |
| Response to Mr Johnson regarding the testing of broken valve springs and the quantity of spares. | 15th Dec 1911 | Box 80 \ 3 scan0086 | |
| Typed document fragment discussing the reliability of a specific part. | 19th Oct 1911 | Box 80 \ 3 scan0087 | |
| Request to arrange a testing rig for rapidly testing new design valve springs. | 15th Dec 1911 | Box 80 \ 3 scan0088 | |
| Meeting minute concerning the design and stress testing of experimental valve springs. | 22th Dec 1911 | Box 80 \ 3 scan0089 | |
| Committee decision regarding the design and specifications of a spring. | 28th Nov 1911 | Box 80 \ 3 scan0090 | |
| Meeting minutes discussing experimental and broken valve springs, testing rigs, and designs for spring covers. | 21th Dec 1911 | Box 80 \ 3 scan0091 | |
| Meeting minutes discussing the design and specifications for experimental valve springs. | 22th Dec 1911 | Box 80 \ 3 scan0092 | |
| Minutes from a meeting discussing design specifications for new valve springs to achieve lower maximum stress. | 27th Dec 1911 | Box 80 \ 3 scan0093 | |
| Meeting minutes discussing the design modifications and testing of experimental valve springs. | 8th Jan 1912 | Box 80 \ 3 scan0094 | |
| Committee report on issues with rotor and valve spring failures on chassis 1698 and recommended fixes. | 6th Dec 1911 | Box 80 \ 3 scan0095 | |
| Committee report discussing valve spring breakages, proposing rig tests, and addressing related technical queries. | 4th Oct 1911 | Box 80 \ 3 scan0096 | |
| Valve spring failures and their probable causes during vehicle testing. | 14th Oct 1911 | Box 80 \ 3 scan0097 | |
| Copy of minute 2 from the 103rd meeting of the T.C. concerning the design of experimental valve springs. | 29th Dec 1911 | Box 80 \ 3 scan0098 | |
| Meeting minutes outlining design specifications for a spring and delegating responsibility for calculations. | 27th May 1928 | Box 80 \ 3 scan0099 | |
| Report from the 109th meeting discussing the failure analysis of experimental and standard valve springs after testing. | 5th Jan 1912 | Box 80 \ 3 scan0100 | |
| Committee discussion on valve spring vibrations, winding action, and potential design modifications to prevent breakages. | 17th Jan 1912 | Box 80 \ 3 scan0101 | |
| Meeting minutes discussing the testing and redesign of valves and valve springs. | 17th Jan 1912 | Box 80 \ 3 scan0102 | |
| Committee discussion regarding the stress figures and design modifications for valve and valve springs. | 24th Feb 1910 | Box 80 \ 3 scan0103 | |
| Valve spring, breaking, and cam shape. | 14th Dec 1911 | Box 80 \ 3 scan0104 | |
| Outlining the setup for an experiment to test the noise produced by different valve springs and cam designs. | 10th Apr 1912 | Box 80 \ 3 scan0105 | |
| Meeting minute discussing the failure of experimental and standard valve springs during testing. | 11th Jan 1912 | Box 80 \ 3 scan0106 | |
| Committee discusses valve spring vibrations, failures, and potential design modifications. | 17th Jan 1912 | Box 80 \ 3 scan0107 | |
| Meeting minute concerning the testing and design of valve springs. | 17th Jan 1912 | Box 80 \ 3 scan0108 | |
| Committee meeting notes regarding instructions for the manufacture of modified springs and washers for a valve spindle. | 28th Nov 1911 | Box 80 \ 3 scan0109 | |
| Testing and performance measurements of twelve different valve springs. | 29th Jan 1912 | Box 80 \ 3 scan0110 | |
| Correspondence regarding broken valve springs on Whitaker's Car No.941 due to a flaw in the metal. | 24th Feb 1912 | Box 80 \ 3 scan0111 | |
| The concluding paragraph of a piece of correspondence requesting its return after being reviewed by a committee. | 7th Mar 1912 | Box 80 \ 3 scan0112 | |
| Proposing solutions to overcome the problem of broken valve springs. | 7th Mar 1912 | Box 80 \ 3 scan0113 | |
| Recommendations regarding valve spring design and reducing the lift of the exhaust valve. | 7th Mar 1912 | Box 80 \ 3 scan0114 | |
| Heat treatment processes, material selection, and stress testing for steel springs. | 7th Mar 1912 | Box 80 \ 3 scan0115 | |
| Valve spring stress testing, material suggestions, and design considerations. | 7th Mar 1912 | Box 80 \ 3 scan0116 | |
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