| Description | Date | Identifier | |
| Clarifying a reference number confusion and requesting the intended experiment for a set of washers. | 30th Sep 1913 | Box 79 \ 2 scan0070 | |
| The request for drawings of Tricou Shock Absorbers and the resulting delay. | 14th Oct 1913 | Box 79 \ 2 scan0071 | |
| The issuance of fitting instructions for Triou Shock Absorbers X709. | 18th Oct 1913 | Box 79 \ 2 scan0072 | |
| Production card for an additional two Triou Shock Absorber forgings. | 8th Nov 1913 | Box 79 \ 2 scan0073 | |
| Note specifying the weight of a set of Trious Shock Absorbers. | 18th Jan 1914 | Box 79 \ 2 scan0074 | |
| Instruction sheet for an alteration regarding Iriou & Houdaille Shock Absorbers. | 5th Mar 1914 | Box 79 \ 2 scan0075 | |
| Note detailing a broken bracket during testing, which is delaying the testing of shock absorbers until stronger replacements are supplied. | 6th Mar 1914 | Box 79 \ 2 scan0076 | |
| Failed bracket on Triou Shock Absorbers during testing and requesting a stronger replacement. | 7th Mar 1914 | Box 79 \ 2 scan0077 | |
| Clarifying a request for shock absorbers, comparing Houdaille and Triou types to the company's own hydraulic system. | 9th Mar 1914 | Box 79 \ 2 scan0078 | |
| Instruction sheet detailing alterations to a List of Parts (LOP) for the Irion & Houdaille Shock Absorber. | 10th Mar 1914 | Box 79 \ 2 scan0079 | |
| Querying missing instructions for reinforced axle brackets for Triou shock absorbers. | 10th Mar 1914 | Box 79 \ 2 scan0080 | |
| Performance of Triou Shock Absorbers on car No. 2300. | 12th Mar 1914 | Box 79 \ 2 scan0081 | |
| Standardisation of one-way hydraulic shock absorbers for fitting to the rear of the car. | 18th Mar 1914 | Box 79 \ 2 scan0082 | |
| Responding to a query about the testing of Triou shock absorbers. | 7th Apr 1914 | Box 79 \ 2 scan0083 | |
| Page 2 of a memorandum confirming a part has been satisfactorily fitted to a car. | 12th Mar 1914 | Box 79 \ 2 scan0084 | |
| Notification of the receipt of one set of four Triou Shock Absorbers available at the Stores. | 9th Apr 1914 | Box 79 \ 2 scan0085 | |
| Extract from a memo regarding a report on the ineffectiveness of Triou Shock Absorbers. | 31th Jul 1914 | Box 79 \ 2 scan0086 | |
| List of experiments and modifications carried out on Chassis 2300. | 22th Oct 1914 | Box 79 \ 2 scan0087 | |
| Booklet from a Mr. Anderson regarding a silencer design for potential testing. | 19th Jun 1920 | Box 79 \ 2 scan0088 | |
| Letter from R. Anderson regarding a patent vacuum producer and silencer, including test results and a license offer. | 12th Jun 1920 | Box 79 \ 2 scan0089 | |
| Using a vacuum in the exhaust pipe for a 2-stroke valveless engine. | 12th Jun 1920 | Box 79 \ 2 scan0090 | |
| Letter from a consulting engineer offering a lump sum license for a Carb-Jector apparatus and a valveless engine. | 5th Jan 1921 | Box 79 \ 2 scan0091 | |
| Description and diagrams of Hunter's Carb-Jector Silencer Apparatus for valveless two-stroke engines. | 21th Jan 1921 | Box 79 \ 2 scan0092 | |
| Letter concerning the examination of Patent No.153184 for a silencer and the potential testing of it. | 21th Jan 1921 | Box 79 \ 2 scan0093 | |
| Hand-drawn conceptual diagram for a valveless 2-stroke engine and a silent exhaust system. | 2nd Feb 1921 | Box 79 \ 2 scan0094 | |
| Letter responding to an inquiry about a patent carburetor/vacuum silencer and engine compression ratios. | 2nd Feb 1921 | Box 79 \ 2 scan0095 | |
| Letter from consulting engineer R. Anderson regarding a patented Carburettor Jector and a proposed valveless two-stroke engine. | 27th Jan 1921 | Box 79 \ 2 scan0096 | |
| Hand-drawn conceptual diagrams and notes for an internal combustion engine design. | 9th Feb 1921 | Box 79 \ 2 scan0097 | |
| Letter from Bridgehead Ltd. regarding the performance results and patent status of a new silencer design. | 9th Feb 1921 | Box 79 \ 2 scan0098 | |
| Issue of shock absorber ball ends coming loose and potential causes. | 28th Jan 1920 | Box 79 \ 2 scan0099 | |
| Technical memo discussing modifications to the exhaust pipe, rear road springs, and front shock absorber anchorage for the 40/50 HP chassis. | 18th May 1920 | Box 79 \ 2 scan0100 | |
| Modifications to a front axle forging and design considerations for the 'Vulture', 'Buzzard', and 'Condor' engines. | 18th Aug 1920 | Box 79 \ 2 scan0101 | |
| Two schemes (379 and 385) for mounting a ball end for the front shock absorber. | 1st Jun 1920 | Box 79 \ 2 scan0102 | |
| Blueprints for a ball end for the front axle shock absorber. | 10th Jun 1920 | Box 79 \ 2 scan0103 | |
| Design alterations for a front shock damper anchorage scheme. | 12th Jun 1920 | Box 79 \ 2 scan0104 | |
| Blueprints for a modification to a ball end for a front shock absorber. | 14th Jun 1920 | Box 79 \ 2 scan0105 | |
| Modifications to the front shock absorber and front axle forging. | 19th Jul 1920 | Box 79 \ 2 scan0106 | |
| Difficulty of fitting a new shock absorber ball fixing on the front axle and proposing a test. | 22th Apr 1920 | Box 79 \ 2 scan0107 | |
| Experimental modifications to the front shock absorber ball end and axle for a 40/50 chassis. | 13th Aug 1920 | Box 79 \ 2 scan0108 | |
| Modifications for the front shock absorber on a 40/50 chassis, including the dispatch of blueprints. | 30th Aug 1920 | Box 79 \ 2 scan0109 | |
| Sample silencer from Aymard Co. of Ipswich, detailing its advantages. | 10th May 1920 | Box 79 \ 2 scan0110 | |
| Letter from The Wolsey Engineering Co. Ltd. regarding a silencer sent for testing and enquiring about a potential order. | 11th Aug 1920 | Box 79 \ 2 scan0111 | |
| The testing of an Aymard Silencer compared to a standard 40/50 model. | 16th Dec 1920 | Box 79 \ 2 scan0112 | |
| Meeting minutes extract discussing a valve cap spanner and a new magneto wire bracket. | 20th Oct 1911 | Box 79 \ 2 scan0113 | |
| From Mr. Royce regarding a suggested scheme for a special spanner to remove rear axle tube nuts. | 1st May 1912 | Box 79 \ 2 scan0114 | |
| The design and supply of a suitable spanner for wheel ball caps to be included with new chassis. | 11th Feb 1913 | Box 79 \ 2 scan0115 | |
| To Mr. Royce regarding car no. 2301, seeking his opinion on a design. | 5th Apr 1913 | Box 79 \ 2 scan0116 | |
| Departmental memo regarding the supply and storage of special spanners for hubs on wire wheels. | 6th Mar 1913 | Box 79 \ 2 scan0117 | |
| Instruction to create a spanner for removing the rear wheel inner ball bearing cap and seeking Mr. Royce's opinion on the design. | 5th Apr 1913 | Box 79 \ 2 scan0118 | |
| Manufacture and design of a spanner for the rear wheel ball cap. | 7th Apr 1913 | Box 79 \ 2 scan0119 | |
| Short memo confirming the dispatch of a set of specially heat-treated Box Spanners. | 4th Dec 1913 | Box 79 \ 2 scan0120 | |
| Test on new spanners for rear axle tube nuts due to reported failures. | 24th Dec 1914 | Box 79 \ 2 scan0121 | |
| The spanner for the rear axle tube nut which bends or breaks easily and requires redesigning. | 26th Feb 1914 | Box 79 \ 2 scan0122 | |
| Internal memorandum discussing the inefficiency of the spanner for the rear axle tube nut. | 28th Feb 1914 | Box 79 \ 2 scan0123 | |
| Query and handwritten response regarding the strength and effectiveness of a spanner for a rear axle tube nut. | 3rd Mar 1914 | Box 79 \ 2 scan0124 | |
| Issues with the spanner for the rear axle tube nut, noting the pins break or bend. | 4th Mar 1914 | Box 79 \ 2 scan0125 | |
| Unsatisfactory design of a valve tappet spanner and proposing a single, long-handled alternative. | 23th Feb 1914 | Box 79 \ 2 scan0126 | |
| Chasing a report on a valve tappet spanner, with a handwritten response regarding its material. | 11th Mar 1914 | Box 79 \ 2 scan0127 | |
| Recommending against the standard use of specific spanners for gudgeon pin grub screws due to insufficient leverage. | 14th Mar 1914 | Box 79 \ 2 scan0128 | |
| Production and case hardening of a valve tappet spanner. | 20th Mar 1914 | Box 79 \ 2 scan0129 | |
| Conflicting reports on a valve tappet spanner model X1119. | 24th Mar 1914 | Box 79 \ 2 scan0130 | |
| And requesting a detailed drawing for a new valve tappet spanner design. | 5th May 1914 | Box 79 \ 2 scan0131 | |
| New, improved tappet spanner design for standardization. | 27th Mar 1914 | Box 79 \ 2 scan0132 | |
| Test report and improvement suggestions for a Gudgeon Pin Spanner. | 18th Jun 1914 | Box 79 \ 2 scan0133 | |
| To Mr. Dalley providing feedback on the design of a Valve Tappet Spanner, E4372. | 2nd Jul 1914 | Box 79 \ 2 scan0134 | |
| Sketches showing the design evolution of a spanner for a tappet, including suggestions and Mr. Royce's final design. | 2nd Jul 1914 | Box 79 \ 2 scan0135 | |
| Outline drawings of three different spanners. | 24th Jun 1914 | Box 79 \ 2 scan0136 | |
| Exchange discussing the design of a tappet spanner and whether it should lock one or two tappets at once. | 24th Jun 1914 | Box 79 \ 2 scan0137 | |
| The satisfactory nature and use of a gudgeon pin locking screw spanner. | 25th Jun 1914 | Box 79 \ 2 scan0138 | |
| Agreeing to the standardisation of the Tappet Spanner E4372. | 2nd Jul 1914 | Box 79 \ 2 scan0139 | |
| Improved valve tappet spanner, recommending it be sent out with cars. | 11th Jul 1914 | Box 79 \ 2 scan0140 | |
| Confirming agreement on the standardisation of valve tappet spanners. | 29th Jul 1914 | Box 79 \ 2 scan0141 | |
| Confirming agreement on the standardisation of a Piston Pin Box Spanner. | 30th Jul 1914 | Box 79 \ 2 scan0142 | |
| Need to update the car instruction book for the 40/50 chassis regarding the ignition system. | 15th Aug 1919 | Box 79 \ 2 scan0143 | |
| Changes to the tool kit for the 40/50 HP chassis. | 15th Aug 1919 | Box 79 \ 2 scan0144 | |
| Decision to supply a leather tool roll instead of a canvas one for the 40/50 HP chassis. | 16th Aug 1919 | Box 79 \ 2 scan0145 | |
| The decision to supply a leather tool roll for the 40/50 HP chassis instead of a canvas one. | 16th Aug 1919 | Box 79 \ 2 scan0146 | |
| Mr. Royce's suggestions for the tool kit, including adding an oil receptacle and the material for the tool roll. | 19th Aug 1919 | Box 79 \ 2 scan0147 | |
| Advisability of continuing to supply leather roll tool kits with every chassis. | 25th Oct 1918 | Box 79 \ 2 scan0148 | |
| Alternative design for the car's tool kit, from a three-fold to a two-fold satchel. | 9th Sep 1919 | Box 79 \ 2 scan0149 | |
| Notification detailing parts received from various suppliers for a series of experiments. | 23th Oct 1919 | Box 79 \ 2 scan0150 | |
| Supply of tool wallets for series K chassis and the status of tool trays. | 28th Nov 1919 | Box 79 \ 2 scan0151 | |
| Instruction to issue a set of spanners, tools, and spares for use on Chassis 2 X. | 10th Dec 1919 | Box 79 \ 2 scan0152 | |
| Query asking if tire levers are included as accessories with complete cars as part of the mentioned tire outfit. | 12th Jan 1911 | Box 79 \ 2 scan0153 | |
| List of spare parts supplied with a chassis. | 11th Feb 1910 | Box 79 \ 2 scan0154 | |
| List of tools, parts, and accessories with corresponding quantities and part numbers. | 24th Aug 1910 | Box 79 \ 2 scan0155 | |
| Departmental memo clarifying that tyre levers are only supplied as part of the tyre repair outfit, not with the complete car. | 13th Jan 1911 | Box 79 \ 2 scan0156 | |
| Suggesting the inclusion of a box spanner for removing piston pins in the tool kit supplied with every chassis. | 30th Jan 1914 | Box 79 \ 2 scan0157 | |
| General notes from Mr. Royce regarding alterations to the Chassis 1 EX tool kit and tools. | 1st Aug 1919 | Box 79 \ 2 scan0158 | |
| Query for Mr. Royce regarding the design and use of specific spanners and file handles in a tool kit. | 16th Apr 1919 | Box 79 \ 2 scan0159 | |
| Outlining the procedure for supplying spare parts to customers at the Works. | 8th Apr 1920 | Box 79 \ 2 scan0160 | |
| Proposed changes to the chassis tool kit and spares. | 27th Apr 1921 | Box 79 \ 2 scan0161 | |
| Discussion about the standard tool kit, the potential inclusion of a ratchet spanner, and the philosophy of tool and spare part provision for customers. | 23th Mar 1921 | Box 79 \ 2 scan0162 | |
| Proposing the removal of the Trembler Blade and Contact Screw from the 40/50 chassis spares list. | 23th Mar 1921 | Box 79 \ 2 scan0163 | |
| Process for testing and supplying an improved foot-mat accessory. | 20th Jun 1922 | Box 79 \ 2 scan0164 | |
| Sales letter from The Sphinx Manufacturing Company offering ignition plugs. | 22th Jul 1912 | Box 79 \ 2 scan0165 | |
| Record concerning Sphinx plugs with 'R.R.' printed on them. | 23th Jul 1912 | Box 79 \ 2 scan0166 | |
| Forwarding a manufacturer's letter concerning Sphinx Sparking Plugs. | 19th Nov 1913 | Box 79 \ 2 scan0167 | |
| Stating that Sphinx Sparking Plugs were previously found to be unreliable and of poor quality. | 15th Aug 1919 | Box 79 \ 2 scan0168 | |
| Visit from a representative of The Sphinx Manufacturing Co.Ltd. inquiring about a report on Sparking Plugs. | 27th Jun 1921 | Box 79 \ 2 scan0169 | |
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