| Description | Date | Identifier | |
| Letter to The Hoffmann Manufacturing Co. Ltd. requesting the urgent supply of steering and other rollers. | 9th Sep 1937 | Box 153 \ 1 scan0037 | |
| Letter to The Adamant Engineering Co. Ltd. regarding the flexibility of a steering system and potential risks. | 9th Sep 1937 | Box 153 \ 1 scan0038 | |
| Letter from Adamant Engineering confirming an order for experimental cams and providing drawing No.22638. | 13th Sep 1937 | Box 153 \ 1 scan0039 | |
| Letter from Adamant Engineering Co. Ltd. regarding the supply and machining of experimental cams. | 13th Sep 1937 | Box 153 \ 1 scan0040 | |
| Letter from Adamant Engineering Co. Ltd. regarding a potential order, with an enclosed blueprint. | 13th Sep 1937 | Box 153 \ 1 scan0041 | |
| Official order be sent to Hoffmanns for 3 roller followers for a Phantom III. | 14th Sep 1937 | Box 153 \ 1 scan0042 | |
| Letter to Hoffmann Manufacturing requesting the creation of 3 experimental roller followers for a steering gear. | 14th Sep 1937 | Box 153 \ 1 scan0043 | |
| Letter to The Adamant Engineering Co. Ltd. regarding cams with American pattern bores and a request for prints. | 14th Sep 1937 | Box 153 \ 1 scan0044 | |
| Telegram confirming the despatch of bearings and advising a follow-up letter. | 14th Sep 1937 | Box 153 \ 1 scan0045 | |
| Letter regarding Order No. 47681 for an Experimental Cam, clarifying the non-inclusion of rollers and the lack of a received blueprint. | 15th Sep 1937 | Box 153 \ 1 scan0046 | |
| Letter from The Hoffmann Manufacturing Co. Ltd. regarding the despatch and modification of special bearings. | 15th Sep 1937 | Box 153 \ 1 scan0047 | |
| Confirmation of a telegram from The Hoffmann Manufg. Co., Ltd. regarding the despatch of bearings. | 14th Sep 1937 | Box 153 \ 1 scan0048 | |
| Acknowledgment of an enquiry from The Hoffmann Manufacturing Co. Ltd. | 15th Sep 1937 | Box 153 \ 1 scan0049 | |
| Official order for compression springs be sent to Messrs. Geo Salter. | 16th Sep 1937 | Box 153 \ 1 scan0050 | |
| Letter requesting the supply of 6 helical compression springs with specific dimensions. | 16th Sep 1937 | Box 153 \ 1 scan0051 | |
| Letter from The Hoffmann Manufacturing Co. Ltd. confirming work and correcting a bearing number. | 16th Sep 1937 | Box 153 \ 1 scan0052 | |
| Querying the cost of Steering Roller Assemblies produced by Ransome & Marles Ltd. | 17th Sep 1937 | Box 153 \ 1 scan0053 | |
| Letter from Adamant Engineering Co. Ltd. enclosing Blue Prints for an Inner Column and a Cam. | 17th Sep 1937 | Box 153 \ 1 scan0054 | |
| Letter from Hoffmann Manufacturing Co. Ltd concerning the delivery schedule for special steering roller bearings. | 18th Sep 1937 | Box 153 \ 1 scan0055 | |
| The pricing of experimental steering roller assemblies. | 20th Sep 1937 | Box 153 \ 1 scan0056 | |
| Letter to The Hoffmann Manufacturing Co. Ltd., regarding the holding of further bearings until testing is complete. | 21th Sep 1937 | Box 153 \ 1 scan0057 | |
| Letter from Hoffmann Manufacturing regarding a discrepancy in drawing specifications for a bearing. | 22th Sep 1937 | Box 153 \ 1 scan0058 | |
| Visit to M. Olley at Vauxhall Motors to discuss steering systems and suspension layouts. | 23th Sep 1937 | Box 153 \ 1 scan0059 | |
| Chassis vibration, steering geometry, and oversteering, with references to a Vauxhall 14. | 23th Sep 1937 | Box 153 \ 1 scan0060 | |
| Technical memorandum discussing bumper drums, threaded shackles, rear axles, and suspension systems. | 23th Sep 1937 | Box 153 \ 1 scan0061 | |
| Leaf spring design, including grooved section steel, interleaving materials, and damper technology. | 23th Sep 1937 | Box 153 \ 1 scan0062 | |
| Analysis of spring construction, rear axle behaviour including sideways shake and tramping, and roll centre dynamics. | 23th Sep 1937 | Box 153 \ 1 scan0063 | |
| Modifications to rear springs and suspension to cure oversteering. | 23th Sep 1937 | Box 153 \ 1 scan0064 | |
| Graph showing the change of wheel camber and steering geometry error for a Buick Model 60. | 23th Sep 1937 | Box 153 \ 1 scan0065 | |
| Graph illustrating the relationship between wheel bump/rebound and changes in wheel camber and steering geometry for the Wraith II. | 23th Sep 1937 | Box 153 \ 1 scan0066 | |
| Graph plotting wheel camber and steering geometry errors against suspension bump and rebound. | 23th Sep 1937 | Box 153 \ 1 scan0067 | |
| Graph showing the relationship between wheel camber change, cross steering geometry error, bump, and rebound for the Standard Phantom III. | 23th Sep 1937 | Box 153 \ 1 scan0068 | |
| Diagram showing a cross-section of a component with its neutral axis. | 23th Sep 1937 | Box 153 \ 1 scan0069 | |
| Three figures illustrating the design and geometry of a leaf spring suspension system. | 23th Sep 1937 | Box 153 \ 1 scan0070 | |
| Letter from The Hoffmann Manufacturing Co. Ltd. regarding bearings and an enclosed drawing. | 23th Sep 1937 | Box 153 \ 1 scan0071 | |
| Letter to The Hoffmann Manufacturing Co. Ltd. confirming it is in order to work to the limits shown on their print. | 29th Sep 1937 | Box 153 \ 1 scan0072 | |
| The inspection of 22 roller assemblies from Messrs. Hoffmann, detailing passed and rejected units. | 4th Oct 1937 | Box 153 \ 1 scan0073 | |
| Letter to a supplier regarding the testing of sample steering rollers, noting rejections for excess preload and providing feedback on casehardening. | 7th Oct 1937 | Box 153 \ 1 scan0074 | |
| Request for the urgent delivery of three experimental rollers. | 7th Oct 1937 | Box 153 \ 1 scan0075 | |
| Requesting the dispatch of a sectioned 25/30 HP steering roller to The Hoffman Manufacturing Co. Ltd. | 7th Oct 1937 | Box 153 \ 1 scan0076 | |
| Letter from Hoffmann Manufacturing Co. Ltd. detailing alterations to bearing specifications. | 12th Oct 1937 | Box 153 \ 1 scan0077 | |
| Page 2 of a letter from The Hoffmann Manufacturing Co. Ltd. regarding a section passed to their Research Department for examination. | 12th Oct 1937 | Box 153 \ 1 scan0078 | |
| Internal request to place an official order for 6 compression springs from Geo. Salter. | 15th Oct 1937 | Box 153 \ 1 scan0079 | |
| Letter to Geo. Salter & Co. Ltd requesting the supply of 6 helical compression springs with specific dimensions. | 15th Oct 1937 | Box 153 \ 1 scan0080 | |
| Order acknowledgement from Geo. Salter & Co. for helical compression springs. | 18th Oct 1937 | Box 153 \ 1 scan0081 | |
| Letter from Hoffmann Manufacturing admitting a fault in bearing N.2784 and apologising for the error. | 22th Oct 1937 | Box 153 \ 1 scan0082 | |
| Letter discussing issues with a roller assembly part (F.61285) and proposing a design change to the supplier. | 25th Oct 1937 | Box 153 \ 1 scan0083 | |
| Letter from Adamant Engineering regarding the dispatch and fitting instructions for special cams. | 25th Oct 1937 | Box 153 \ 1 scan0084 | |
| Review of competitor features from the 1937 Motor Show, focusing on steering controls, ball joints, and bumper bars. | 26th Oct 1937 | Box 153 \ 1 scan0085 | |
| Engineering drawing of a mounting bracket or clamp assembly in multiple views. | 26th Oct 1937 | Box 153 \ 1 scan0086 | |
| Blueprint showing multiple views of a mechanical clamp or bracket assembly. | 28th Oct 1937 | Box 153 \ 1 scan0087 | |
| Letter to George Angus & Co. Ltd. clarifying a price for blanks and requesting a price for moulded blanks. | 28th Oct 1937 | Box 153 \ 1 scan0088 | |
| Requesting sets of Bakelite pads to be tested on Ph.III cars to see if they maintain load better. | 28th Oct 1937 | Box 153 \ 1 scan0089 | |
| Urgent internal request to order 'Idelite' bakelite laminated rod from Bakelite Limited. | 1st Nov 1937 | Box 153 \ 1 scan0090 | |
| Requesting to increase the quantity of 'Idelite' from 3ft to 6ft. | 2nd Nov 1937 | Box 153 \ 1 scan0091 | |
| Steering roller followers from Hoffmanns and a proposal to alter drawings to suit their dimensional changes. | 5th Nov 1937 | Box 153 \ 1 scan0092 | |
| The production of Hour Glass Steering Worms and related steering cams. | 12th Nov 1937 | Box 153 \ 1 scan0093 | |
| Letter to Hoffmann Manufacturing Co. Ltd. regarding specifications and dimensions for steering rollers. | 17th Nov 1937 | Box 153 \ 1 scan0094 | |
| Letter to Adamant Engineering regarding the failure of Ph.III follower rollers and requesting samples for examination. | 20th Nov 1937 | Box 153 \ 1 scan0095 | |
| Letter from Adamant Engineering Company regarding the supply of parallel rollers and a lubricant sample. | 22th Nov 1937 | Box 153 \ 1 scan0096 | |
| Page 2 of a letter from Adamant Engineering Co. Ltd. regarding a recipe for a mixture. | 22th Nov 1937 | Box 153 \ 1 scan0097 | |
| Letter from Adamant Engineering Co. Ltd. detailing a leadless paste lubricant for spline punching operations. | 22th Nov 1937 | Box 153 \ 1 scan0098 | |
| Letter from a supplier discussing specifications for steering roller bearings, including diameters and contact angles. | 23th Nov 1937 | Box 153 \ 1 scan0099 | |
| Page 2 of a letter from Hoffmann Manufacturing Co. suggesting alterations to drawings for selective assembly. | 23th Nov 1937 | Box 153 \ 1 scan0100 | |
| Invoice from The Adamant Engineering Co. Ltd. for rollers, seeking approval for payment. | 24th Nov 1937 | Box 153 \ 1 scan0101 | |
| Letter from Hoffmann Manufacturing Co. Ltd. discussing a dimensional issue with steering rollers. | 24th Nov 1937 | Box 153 \ 1 scan0102 | |
| Requesting an invoice from The Adamant Co. for 300 rollers not be paid as they were loaned for examination. | 25th Nov 1937 | Box 153 \ 1 scan0103 | |
| Letter to The Adamant Engineering Co. Ltd. regarding spline punching lubricant and parallel rollers. | 25th Nov 1937 | Box 153 \ 1 scan0104 | |
| Test results of three steering cams produced by the Fellows Gear Shaper Company. | 29th Nov 1937 | Box 153 \ 1 scan0105 | |
| The return of 300 loaned rollers to Adamant Engineering Co. Ltd. | 30th Nov 1937 | Box 153 \ 1 scan0106 | |
| Letter to The Hoffmann Manufacturing Co. Ltd. discussing revised dimensions for inner races and an outer member. | 25th Nov 1937 | Box 153 \ 1 scan0107 | |
| Steering joggle and kick-back issues in cross and side steering tube joints for Bentley and 25/30 HP models. | 1st Jan 1938 | Box 153 \ 1 scan0108 | |
| Page two of a document discussing a modification to a part, its effects, potential issues, and cost benefits. | 1st Jan 1938 | Box 153 \ 1 scan0109 | |
| Design drawing for Bentley Cross Steering Tube Ends, showing maximum bedding area. | 6th Jan 1938 | Box 153 \ 1 scan0110 | |
| Dangerous fault caused by incorrectly fitting a locating washer on steering ball ends and a suggestion for a design change. | 6th Jan 1938 | Box 153 \ 1 scan0111 | |
| Exploded diagram of a locking device for steering ball pins. | 8th Jan 1937 | Box 153 \ 1 scan0112 | |
| Undersized bore issue with Marles Type Steering Cams from Adamant Eng. Co. | 12th Jan 1938 | Box 153 \ 1 scan0113 | |
| Locking mechanism for ball ends on steering levers for Wraith, Bentley III and Phantom III models. | 13th Jan 1938 | Box 153 \ 1 scan0114 | |
| Request to send an official order to the Hoffmann Manufacturing Co. for 16 needle bearing races and needles. | 24th Jan 1938 | Box 153 \ 1 scan0115 | |
| Letter from Hoffmann Manufacturing regarding proposed design changes to a needle roller bearing for swivel pins. | 28th Jan 1938 | Box 153 \ 1 scan0116 | |
| Full-size drawing showing the application of a Hoffmann needle roller bearing to a front axle swivel pin. | 28th Jan 1938 | Box 153 \ 1 scan0117 | |
| Blueprint detailing the specifications for a special needle roller bearing. | 28th Jan 1937 | Box 153 \ 1 scan0118 | |
| To Mr. Hardy regarding the hardness testing of a roller from Messrs. Hoffmann. | 2nd Feb 1938 | Box 153 \ 1 scan0119 | |
| Quotation from Hoffmann Manufacturing Co. Ltd. for special outer race and needle rollers. | 11th Feb 1938 | Box 153 \ 1 scan0120 | |
| Letter from The Fellows Gear Shaper Company requesting more information and parts to proceed with manufacturing cutters for the Wraith III and Phantom III units. | 16th Feb 1938 | Box 153 \ 1 scan0121 | |
| List of tested and approved lubricants for medium-duty industrial and railway rolling stock axlebox applications from British Timken Ltd. | 1st Jan 1938 | Box 153 \ 1 scan0122 | |
| Letter from The Hoffmann Manufacturing Co. Ltd. regarding a quotation for rollers and a drawing. | 7th Feb 1938 | Box 153 \ 1 scan0123 | |
| Technical drawing of a special outer race and needle rollers. | 4th Feb 1938 | Box 153 \ 1 scan0124 | |
| Letter from British Timken Limited concerning steering gear bearing specifications. | 16th Feb 1938 | Box 153 \ 1 scan0125 | |
| Letter from British Timken Ltd. regarding an agreement on the external diameter and radius of a cone rib for a bearing. | 16th Feb 1938 | Box 153 \ 1 scan0126 | |
| Letter to The Hoffmann Manufacturing Co. Ltd. regarding a complaint about steering roller preloads. | 2nd Mar 1938 | Box 153 \ 1 scan0127 | |
| Letter discussing a discrepancy in roller preloads for a supplied batch and restating the correct specifications. | 2nd Mar 1938 | Box 153 \ 1 scan0128 | |
| Dispatch of steering components from chassis 3-BU-168 for inspection following a complaint. | 7th Mar 1938 | Box 153 \ 1 scan0129 | |
| Order for Roller Assemblies with Ransome & Marles Ltd. and the option to cancel the remaining balance. | 9th Mar 1938 | Box 153 \ 1 scan0130 | |
| To Mr. Hardy chasing a decision on Roller Assemblies F.61283 from Ransome & Marles Bearing Co. Ltd. | 16th Mar 1938 | Box 153 \ 1 scan0131 | |
| Letter to Geo. Salter & Co. Ltd. requesting a sample of 6 special helical compression springs. | 1st Apr 1938 | Box 153 \ 1 scan0132 | |
| Letter from Hoffmann Manufacturing regarding a grinding error and missing labels on bearing assemblies. | 1st Apr 1938 | Box 153 \ 1 scan0133 | |
| Letter from Geo. Salter & Co. Ltd. regarding the dispatch of helical compression springs. | 4th Apr 1938 | Box 153 \ 1 scan0134 | |
| Scheme for the Bentley 111 and 50 steering column, specifically the steering box and its mounting. | 4th Apr 1938 | Box 153 \ 1 scan0135 | |
| The side steering tube for Bentley 111 and 50 models. | 5th Apr 1938 | Box 153 \ 1 scan0136 | |
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