| Description | Date | Identifier | |
| Letter discussing bearing housing, lubrication, tolerances, and the prevention of rust. | 9th Jun 1928 | Box 180 \ M6 img025 | |
| Letter from F.H. Royce about financial losses due to excessive overtime and a request to increase the workforce. | 9th Jun 1928 | Box 180 \ M6 img026 | |
| Letter discussing production scheduling, material ordering, and managing increased workload to improve turnover and capital efficiency. | 9th Jun 1928 | Box 180 \ M6 img027 | |
| From F. H. Royce outlining the reasons why the cost of production must be reduced. | 9th Jun 1928 | Box 180 \ M6 img028 | |
| Letter discussing production scheduling, management of work-in-progress, and strategies to increase turnover. | 9th Jun 1928 | Box 180 \ M6 img029 | |
| Letter outlining the rationale for continuing in-house production of crane motors, with several design and manufacturing suggestions. | 28th Aug 1928 | Box 180 \ M6 img030 | |
| Design considerations for crane motors, including AC squirrel cage and slip ring types. | 9th Nov 1929 | Box 180 \ M6 img031 | |
| Letter with a further suggestion regarding a Crane Brake Auto Adjustment, including a handwritten note about provisional patent purposes. | 9th Nov 1929 | Box 180 \ M6 img032 | |
| Sketch of a brake automatic adjustment and auto feed mechanism. | 9th Nov 1929 | Box 180 \ M6 img033 | |
| Letter to F.H. Royce concerning drawing No.B.456 for an A.C. Motor. | 2nd Aug 1928 | Box 180 \ M6 img034 | |
| Letter from Mr. Royce about drawing B.456 of an A.C. Motor and proposing a new drawing for approval. | 31th Jul 1928 | Box 180 \ M6 img035 | |
| Letter discussing design modifications for the B.456 A.C. Motor. | 28th Jul 1928 | Box 180 \ M6 img036 | |
| Letter discussing the design of continuous current brake magnets. | 13th Jul 1928 | Box 180 \ M6 img037 | |
| Letter discussing the pros and cons of different insulation materials like bakelite and micanite for various components. | 10th Jul 1928 | Box 180 \ M6 img038 | |
| Letter detailing design specifications for continuous current motors, including shafts and bearings. | 19th Jun 1928 | Box 180 \ M6 img039 | |
| Technical letter discussing the design and materials for brush holders, springs, and commutators, including two diagrams. | 12th Jun 1928 | Box 180 \ M6 img040 | |
| Letter from F.H. Royce to W.O. Bentley discussing the design of alternating current cranes and motors. | 12th Jun 1928 | Box 180 \ M6 img041 | |
| Letter regarding gear shaping machinery, cutter maintenance, and the modification of gears to prevent interference. | 12th Jun 1928 | Box 180 \ M6 img042 | |
| Pencil sketch of mechanical components over a very faded typed document. | 19th May 1928 | Box 180 \ M6 img043 | |
| Letter from F.H. Royce discussing the design of high speed alternating current motors. | 19th May 1928 | Box 180 \ M6 img044 | |
| Letter to F.H. Royce responding to a telegram about the specification of bearings and brush holders for Chilean Dynamos. | 10th Mar 1928 | Box 180 \ M6 img045 | |
| Letter concluding with a technical note on the specification of ball bearings. | 10th Mar 1928 | Box 180 \ M6 img046 | |
| Letter with a sketch, discussing points of criticism for a dynamo design, referencing drawing B.254. | 10th Mar 1928 | Box 180 \ M6 img047 | |
| Letter with sketches discussing a ball bearing design, brush holders, and insulation. | 27th Feb 1928 | Box 180 \ M6 img048 | |
| Feasibility and cost-effectiveness of Fynn-Weichsel design induction motors. | 27th Feb 1928 | Box 180 \ M6 img049 | |
| Letter from F.H. Royce discussing the practicalities of lubricating ball and plain bearings. | 19th Jan 1928 | Box 180 \ M6 img050 | |
| Letter to F.H. Royce acknowledging receipt of his letter and a copy of 'Insulating Varnishes in Electrotechnics'. | 19th Jan 1928 | Box 180 \ M6 img051 | |
| Letter from F.H. Royce to J.C. Bentley regarding 'Insulating Varnishes in Electrotechnics'. | 13th Jan 1928 | Box 180 \ M6 img052 | |
| Letter to F.H. Royce acknowledging his letter and requesting a spare copy of the book 'Insulating Varnishes in Electrotechnics'. | 3rd Jan 1928 | Box 180 \ M6 img053 | |
| Letter to F.H. Royce acknowledging his correspondence regarding B.T.H. interchangeable motors and advising that sketches are being prepared. | 17th Dec 1927 | Box 180 \ M6 img054 | |
| Letter to F.H. Royce regarding sketches for a brake magnet piston, cranes for the Great Western Railway, and a meeting in London. | 6th Dec 1927 | Box 180 \ M6 img055 | |
| Letter discussing design suggestions for a piston and tube assembly, including thoughts on threads and floating components. | 3rd Dec 1927 | Box 180 \ M6 img056 | |
| Letter discussing a business opportunity for cranes, including design considerations and pricing strategy. | 29th Nov 1927 | Box 180 \ M6 img057 | |
| Letter to F.H. Royce Esq discussing the design of a 3 Phase Brake Solenoid, including layouts, terminals, and mounting. | 29th Nov 1927 | Box 180 \ M6 img058 | |
| Report to F.H. Royce regarding piston designs, insulating materials, and enclosed correspondence from other companies. | 29th Nov 1927 | Box 180 \ M6 img059 | |
| The final page of a letter addressed to F.H. Royce concerning a publication. | 15th Nov 1927 | Box 180 \ M6 img060 | |
| Letter to F.H. Royce confirming the acquisition of 'Sindanyo' material and a review of brake magnet notes. | 15th Nov 1927 | Box 180 \ M6 img061 | |
| Request to obtain a piece of Black Matt Finish 'Sindanyo' material with specific dimensions from Messrs Turner Brothers. | 15th Nov 1927 | Box 180 \ M6 img062 | |
| Letter from F.H. Royce discussing design decisions and features for brake solenoids, including a hand-drawn diagram. | 24th Oct 1927 | Box 180 \ M6 img063 | |
| Letter from F.H. Royce discussing the purchase of a Sunderland Gear Plainer for Royce Ltd. | 10th Aug 1927 | Box 180 \ M6 img064 | |
| Brief typed letter of acknowledgement sent to F. H. Royce. | 8th Aug 1927 | Box 180 \ M6 img065 | |
| Letter to P.H. Royce regarding a hand book on Gear Planers and the potential acquisition of a number 19 machine. | 3rd Aug 1927 | Box 180 \ M6 img066 | |
| Letter to F. H. Royce regarding Mr. Coley's travel plans for a meeting in London. | 22th Jul 1927 | Box 180 \ M6 img067 | |
| Letter to F.H. Royce confirming travel arrangements to arrive in Chichester. | 14th Jul 1927 | Box 180 \ M6 img068 | |
| Letter acknowledging receipt of correspondence from F. H. Royce. | 7th Jul 1927 | Box 180 \ M6 img069 | |
| Letter to Mr. E. Coley discussing design faults and potential losses on the Ley's Transporter project. | 5th Jul 1927 | Box 180 \ M6 img070 | |
| Technical critique of a transporter design, focusing on the collector gear and conductor bars. | 5th Jul 1927 | Box 180 \ M6 img071 | |
| Specifications for the installation of insulated conductor bars and associated fixings, including a diagram of washer arrangements. | 5th Jul 1927 | Box 180 \ M6 img072 | |
| Review and critique of various engineering design components and practices, with suggestions for improvement. | 5th Jul 1927 | Box 180 \ M6 img073 | |
| Letter from F.H. Royce criticising the approval process for production drawings and the quality of work. | 14th Jun 1927 | Box 180 \ M6 img074 | |
| Letter from F.H. Royce to Mr. E. Coley discussing a technical problem and proposing solutions to maintain customer relations and reputation. | 14th Jun 1927 | Box 180 \ M6 img075 | |
| Letter from F.H. Royce to Mr. Bentley about the importance of thorough testing and developing standard units. | 8th Feb 1929 | Box 180 \ M6 img076 | |
| Letter from F.H. Royce discussing the critical importance of thoroughly testing standard units, cranes, and transporters before production. | 13th Feb 1929 | Box 180 \ M6 img077 | |
| Letter to F.H. Royce discussing generator design modifications for Chilean Naval Boats. | 2nd Apr 1923 | Box 180 \ M6 img078 | |
| Bearing types, shaft arrangements, and insulation materials like Bakelite and Mica. | 2nd Apr 1923 | Box 180 \ M6 img079 | |
| The concluding page of a typed letter with a handwritten signature. | 23th Nov 1927 | Box 180 \ M6 img080 | |
| Letter to Mr. Royce discussing designs for a brake magnet, a terminal box, and the testing of porcelain insulators. | 23th Nov 1927 | Box 180 \ M6 img081 | |
| Letter discussing insulator tests, proposals for collector gears, and other component matters. | 23th Nov 1927 | Box 180 \ M6 img082 | |
| Letter discussing German sample insulators, collector gear proposals, and ball bearing lubrication. | 23th Nov 1927 | Box 180 \ M6 img083 | |
| Blueprint for an outdoor insulator designed to support grooved trolley wires. | 2nd Jan 1927 | Box 180 \ M6 img084 | |
| Blueprint for an indoor type insulator designed for supporting grooved trolley wire, with assembly instructions. | 2nd Jan 1927 | Box 180 \ M6 img085 | |
| Letter responding to Mr. Royce's queries about the design of alternating current motors. | 4th Jun 1928 | Box 180 \ M6 img086 | |
| Series of technical points regarding the design and operation of industrial and crane motors, including voltage, speed, braking systems, and control methods. | 4th Jun 1928 | Box 180 \ M6 img087 | |
| Technical discussion on brake systems, motor generator sets, and the comparison of A.C. and D.C. motors for crane applications. | 4th Jun 1928 | Box 180 \ M6 img088 | |
| Design considerations and comparisons between A.C. and D.C. motors for cranes. | 4th Jun 1928 | Box 180 \ M6 img089 | |
| Insulation materials, machine components, castings, and potential office relocation. | 4th Jun 1928 | Box 180 \ M6 img090 | |
| Responding to a letter, discussing material choices, D.C. machine components, and office logistics. | 4th Jun 1928 | Box 180 \ M6 img091 | |
| Internal communication discussing business operations, production, pricing, and personnel matters. | 4th Jun 1928 | Box 180 \ M6 img092 | |
| Operational improvements, pricing, staff morale, and a competitive analysis of pulley blocks. | 4th Jun 1928 | Box 180 \ M6 img093 | |
| Revised keying methods, insulators, boring wheels, and new ranges of D.C. and A.C. motors. | 4th Jun 1928 | Box 180 \ M6 img094 | |
| Letter discussing design improvements and manufacturing methods for keys, bearings, insulators, wheels, and motors. | 12th Nov 1927 | Box 180 \ M6 img095 | |
| Letter discussing the design features and potential issues of 3 Phase Brake Magnets. | 12th Nov 1927 | Box 180 \ M6 img096 | |
| Letter detailing the proposed design for a brake magnet and an order for its components. | 31th Oct 1927 | Box 180 \ M6 img097 | |
| Letter to Mr. Royce listing samples, literature, and catalogues sent for review. | 31th Oct 1927 | Box 180 \ M6 img098 | |
| List of brochures, samples, and leaflets related to various suppliers and products. | 29th Oct 1927 | Box 180 \ M6 img099 | |
| Letter to F.H. Royce regarding the design of Brake Magnets and the method for securing coils. | 29th Oct 1927 | Box 180 \ M6 img100 | |
| From F. H. Royce with recommendations on gear cutting systems and a description of an A.C. operating magnet. | 6th Aug 1927 | Box 180 \ M6 img101 | |
| Letter to F.H. Royce concerning a faulty transporter machine and proposed solutions. | 11th Jul 1927 | Box 180 \ M6 img102 | |
| Letter to F.H. Royce concerning a dispute with sub-contractors over an unsatisfactory track and the proposed resolution. | 11th Jul 1927 | Box 180 \ M6 img103 | |
| Horse Power figures for a 40/50 HP engine, comparing different exhaust schemes. | 1st Apr 1924 | Box 181 \ M7 img001 | |
| Memo from 'R' to a Mr Bentley discussing the design and performance of shaft couplings. | 1st Apr 1924 | Box 181 \ M7 img002 | |
| Torque limits, shaft speed, coupling improvements, and material fatigue. | 1st Apr 1924 | Box 181 \ M7 img003 | |
| The standardization of gear wheels made from steel castings. | 1st Apr 1924 | Box 181 \ M7 img004 | |
| With a sketch discussing a coupling design and potential improvements. | 1st Apr 1924 | Box 181 \ M7 img005 | |
| Draft note discussing different key types, sketches, and various mechanical components. | 1st Apr 1924 | Box 181 \ M7 img006 | |
| The design of hardened shafts, wheel housings, and a new 'Crab' model with enclosed gears. | 20th Oct 1928 | Box 181 \ M7 img007 | |
| Letter concerning employee wages, pay rates, and the need for reductions. | 20th Oct 1928 | Box 181 \ M7 img008 | |
| Letter with a sketch explaining the necessity of spherical seatings for bolts and pins to avoid stress failure. | 22th Sep 1930 | Box 181 \ M7 img009 | |
| Letter detailing conclusions on electro-motor design following a visit by Mr Bentley. | 12th Aug 1912 | Box 181 \ M7 img010 | |
| The merits of different varnishes for field coils and design options for armature shafts. | 12th Aug 1912 | Box 181 \ M7 img011 | |
| Shaft repair methods, including continuous sleeves and ball bearing arrangements on motor shafts. | 12th Aug 1912 | Box 181 \ M7 img012 | |
| Pencil sketches of vehicle components, possibly chassis and engine elements. | 12th Aug 1912 | Box 181 \ M7 img013 | |
| The selection of bearings, shaft materials, and mica for commutators. | 12th Aug 1912 | Box 181 \ M7 img014 | |
| Continued technical memorandum discussing specifications for brush holder spindles, end bearings, and hoist mechanisms. | 12th Aug 1912 | Box 181 \ M7 img015 | |
| Requirements for a hoist motor and braking system, including Mr. Bentley's ideas. | 12th Aug 1912 | Box 181 \ M7 img016 | |
| The concluding page of a letter signed by F. H. Royce discussing a hoist. | 27th Sep 1912 | Box 181 \ M7 img017 | |
| Letter proposing a method of drying impregnated coils using forced hot air instead of a vacuum. | 27th Sep 1912 | Box 181 \ M7 img018 | |
| Letter from J.H. Royce to Mr. Bentley discussing corrosion issues and urging vigorous action with the help of chemists. | 29th Mar 1911 | Box 181 \ M7 img019 | |
| Letter proposing a method for drying and impregnating coils using forced hot air instead of a vacuum. | 27th Sep 1912 | Box 181 \ M7 img020 | |
| Typed letter to Mr. Bentley discussing methods for drying and impregnating coils, including wax baths and issues with varnish. | 19th Nov 1919 | Box 181 \ M7 img021 | |
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