Rolls-Royce Archives
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
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Letter from C.C. Wakefield & Co. Ltd. arranging a visit to the Derby works.26th Jun 1930Box 32 \ 3  Scan190
Request for comparative viscosity testing of two different gear oils at various temperatures.3rd Oct 1930Box 32 \ 3  Scan191
The comparison of a suitable gearbox oil from Wakefields with the existing Amber 'A' oil.22th Oct 1930Box 32 \ 3  Scan192
From Paris to Derby regarding the viscosity of Wakefield Gear Oil.16th Oct 1930Box 32 \ 3  Scan193
Suitability of a gearbox oil from Wakefield's and enquiring about available alternatives.4th Nov 1930Box 32 \ 3  Scan194
Requesting a meeting with a Wakefield's technical representative regarding suitable gearbox oil.6th Nov 1930Box 32 \ 3  Scan195
Requesting a comparative analysis of Wakefield's Gearease No.1 against Whitmore's No.0 Hypoid Oil.18th Dec 1930Box 32 \ 3  Scan196
Order for Wakefield's Hypoid Axle Compound.10th Mar 1931Box 32 \ 3  Scan197
Testing and proposed use of an alternative oil for hypoid rear axles.10th Mar 1931Box 32 \ 3  Scan198
Letter from C.C. Wakefield & Co. to Mr. E. W. Hives arranging a meeting at the Derby works.17th Mar 1931Box 32 \ 3  Scan199
Requesting an order for Wakefields' No.I. Gear Ease oil for hypoid axles.28th May 1931Box 32 \ 3  Scan200
Inquiry to oil supplier C.C. Wakefield & Co. about the possibility of mixing their Gearease No.1 oil for use in gearbox testing.28th May 1931Box 32 \ 3  Scan201
Letter from C.C. Wakefield & Co., Ltd. regarding the thinning of No. 1 Gearease with the addition of Castrol 'XL' oil.2nd Jun 1931Box 32 \ 3  Scan202
Recommending a new, successfully tested alternative oil for hypoid rear axles.1st Sep 1931Box 32 \ 3  Scan203
Letter to C. C. Wakefield & Co. Ltd confirming the standardization of 'Gearease' oil for axle lubrication.19th Sep 1931Box 32 \ 3  Scan204
Letter from C.C. Wakefield & Co. Ltd. regarding the official recommendation of 'Gearease No. 1' lubricant.21th Sep 1931Box 32 \ 3  Scan205
Standardisation report on using Wakefields Gear Ease No.1 oil for hypoid gear rear axles.21th Sep 1931Box 32 \ 3  Scan206
Suitability of Wakefield's XXL oil as an alternative for gearbox lubrication.22th Oct 1931Box 32 \ 3  Scan207
From the Paris Showrooms to Derby regarding the equivalence of Castrol 'XXL' gear oil to Prices Amber 'A'.20th Oct 1931Box 32 \ 3  Scan208
Requesting a test of an alternative gearbox oil, XXL, from Wakefields.23th Oct 1931Box 32 \ 3  Scan209
Comparing the prices of three different lubricants for potential standardisation.28th Oct 1931Box 32 \ 3  Scan210
Internal request to order a 5-gallon drum of Wakefields Hypoid Axle Oil.30th Oct 1931Box 32 \ 3  Scan211
Request for a comparative analysis of two different gearbox oils.30th Oct 1931Box 32 \ 3  Scan212
Selection, pricing, and testing of hypoid axle oils from various suppliers.30th Oct 1931Box 32 \ 3  Scan213
Inquiry regarding the danger of mixing Castrol No. 1 Gearease with Whitmore's Compound.26th Nov 1931Box 32 \ 3  Scan214
Letter from C.C. Wakefield & Co. Ltd. regarding the mixing of lubricant compounds and a planned visit.23th Nov 1931Box 32 \ 3  Scan215
The delayed testing of a Rotary Transformer for E.A. Claremont Esq.24th Feb 1915Box 32 \ 4  Scan001
Plan showing the dimensions and calculations for a transformer's iron core, primary, and secondary windings.19th Aug 1919Box 32 \ 4  Scan002
Extract regarding the production testing of electrical apparatus and the acquisition of a transformer.19th Aug 1919Box 32 \ 4  Scan003
Requesting the modification of a transformer for production testing of condensers.9th Sep 1919Box 32 \ 4  Scan004
Winding specifications for an auto-transformer used in the production testing of condensers.4th Sep 1919Box 32 \ 4  Scan005
Calculations regarding the area of coils and clearance for a 220/450 transformer.17th Sep 1919Box 32 \ 4  Scan006
Urgent request to rewind a transformer for production testing of condensers.17th Sep 1919Box 32 \ 4  Scan007
Request for particulars of a transformer for testing insulating materials used in ignition coils.10th Dec 1930Box 32 \ 4  Scan008
Requirements for high-tension transformers needed for insulation testing.22th Sep 1920Box 32 \ 4  Scan009
Letter from Metropolitan-Vickers Electrical Co. Ltd. declining to quote for a testing transformer.1st Oct 1920Box 32 \ 4  Scan010
Letter from The British Thomson-Houston Co. Ltd. declining to quote for high tension transformers.5th Oct 1920Box 32 \ 4  Scan011
Letter from The British Electrical Transformer Co. Ltd. acknowledging an enquiry for an insulation testing transformer.9th Oct 1920Box 32 \ 4  Scan012
Quotation from Foster Engineering Co. Ltd. for two single-phase oil-cooled transformers.12th Oct 1920Box 32 \ 4  Scan013
Quotation from The British Electric Transformer Co. for transformers for insulation testing.18th Oct 1920Box 32 \ 4  Scan014
Continuation of a quotation from The British Electric Transformer Co. Ltd. outlining delivery and pricing terms.18th Oct 1920Box 32 \ 4  Scan015
Quotations for a transformer for insulation testing and suggesting alternative suppliers.26th Oct 1920Box 32 \ 4  Scan016
Required capacity of 1/2 to 1 K.V.A. and listing two company addresses.26th Oct 1920Box 32 \ 4  Scan017
Letter from W. Mackie & Co. clarifying they do not manufacture transformers in response to an enquiry.28th Oct 1920Box 32 \ 4  Scan018
Letter from Mitchell's Electrical & Wireless Ltd. acknowledging an enquiry for High Tension Transformers.29th Oct 1920Box 32 \ 4  Scan019
Quotation from Bowday & Co. for two oil-cooled transformers with variable secondary pressure options.30th Oct 1920Box 32 \ 4  Scan020
Quotation from H.W. Sullivan for insulation testing transformers.6th Nov 1920Box 32 \ 4  Scan021
Letter from Watson & Sons responding to an enquiry for a high tension transformer for insulation testing.13th Nov 1920Box 32 \ 4  Scan022
Specifications for a transformer used for insulation testing and observing 'Breakdown-voltage'.17th Nov 1920Box 32 \ 4  Scan023
Responding to a letter from Messrs. Watson & Sons regarding a high tension transformer for insulation testing.17th Nov 1920Box 32 \ 4  Scan024
Procurement process and supplier quotations for an insulation testing transformer.19th Nov 1920Box 32 \ 4  Scan025
Concluding the handover of correspondence for a particular matter.19th Nov 1920Box 32 \ 4  Scan026
Quotation from Mitchell's Electrical & Wireless Ltd. for two single-phase oil-cooled transformers and transformer oil.19th Nov 1920Box 32 \ 4  Scan027
Continuation page of a letter outlining guarantee, performance, and pricing terms, with alternative technical suggestions.19th Nov 1920Box 32 \ 4  Scan028
Quotation for an air-cooled transformer with an auto transformer regulated primary.19th Nov 1920Box 32 \ 4  Scan029
Quotation from Watson & Sons for an oil immersed insulation testing transformer.23th Nov 1920Box 32 \ 4  Scan030
Comparison table of transformer quotations from various suppliers.26th Nov 1920Box 32 \ 4  Scan031
Quotations and requesting the order of two transformers for insulation testing.1st Dec 1920Box 32 \ 4  Scan032
Purchase and cost of insulation testing apparatus.10th Dec 1920Box 32 \ 4  Scan033
Copy of a letter from Watson & Sons following up on a quote for an Oil Immersed Step Up Transformer.13th Dec 1920Box 32 \ 4  Scan034
Requesting an order for eight large batten lamp holders to be used for transformer insulation testing.16th Dec 1920Box 32 \ 4  Scan035
Need to acquire a High Tension (H.T.) testing transformer for the works.23th Dec 1920Box 32 \ 4  Scan036
Letter requesting information and particulars for a small transformer for testing insulating materials.30th Dec 1920Box 32 \ 4  Scan037
Letter from W. T. Glover & Co. Ltd. discussing testing transformers and voltage requirements for materials testing.5th Jan 1921Box 32 \ 4  Scan038
Letter from Royce Limited discussing the specifications of a transformer and insulating materials.19th Jan 1921Box 32 \ 4  Scan039
Letter discussing the properties and testing of a new varnish for impregnating induction coils.28th Apr 1922Box 32 \ 4  Scan040
From EFC to Hy. following up on the procurement of a High Tension (H.T.) Testing Transformer.28th Apr 1922Box 32 \ 4  Scan041
Chasing up several overdue jobs for the Electrical Experimental Department.7th Jul 1922Box 32 \ 4  Scan042
Order request for a single-phase oil-cooled transformer and transformer oil for testing insulating material.24th Aug 1922Box 32 \ 4  Scan043
Fault and unexpected terminals on a transformer for testing insulating materials.30th Oct 1922Box 32 \ 4  Scan044
Letter from Mitchell's Electrical & Wireless Ltd regarding diagrams for a supplied transformer.1st Nov 1922Box 32 \ 4  Scan045
Wiring diagram for a 1 KVA single-phase transformer showing H.T. and L.T. connections.18th Sep 1922Box 32 \ 4  Scan046
Wiring diagram showing the connections for an insulation testing transformer.31th Aug 1922Box 32 \ 4  Scan047
Filing cover page with a laboratory reference number and a print room date stamp.20th Nov 1933Box 32 \ 4  Scan048
Enquiry for a cutout and a choking coil to operate with a high tension transformer for the Experimental Department.21th Nov 1922Box 32 \ 4  Scan049
List of approximate alternating voltages from a transformer and their applications in various testing procedures.12th Sep 1924Box 32 \ 4  Scan050
Request to undertake the impregnation and baking of a testing transformer core.17th Sep 1924Box 32 \ 4  Scan051
Data table detailing the configurations and output voltages for a testing transformer.25th Sep 1924Box 32 \ 4  Scan052
Data table listing conditions, position of tappings, total number of turns, and equivalent nominal voltage.27th Sep 1924Box 32 \ 4  Scan053
Data table for transformer testing, showing tapping positions, total turns, and equivalent voltage.27th Sep 1924Box 32 \ 4  Scan054
Data table and schematic diagram for a tapped winding, detailing turn counts and corresponding voltages.29th Sep 1924Box 32 \ 4  Scan055
Requesting materials for winding an experimental testing transformer.29th Sep 1924Box 32 \ 4  Scan056
Calculations and specifications for a laboratory testing transformer.5th Feb 1925Box 32 \ 4  Scan057
Specification table for a testing transformer, detailing winding sections and voltages.8th Feb 1926Box 32 \ 4  Scan058
Specification table for a tapped electrical winding, detailing the number of turns, wire gauge, and nominal voltage for each section.8th Feb 1926Box 32 \ 4  Scan059
Table detailing specifications for coil windings by section, including the number of turns and nominal voltage.8th Feb 1926Box 32 \ 4  Scan060
Diagram of connections for a transformer switchboard.27th Feb 1926Box 32 \ 4  Scan061
Reverse of a document with a 'Print Room' stamp from Derby.27th Feb 1926Box 32 \ 4  Scan062
The magnetising flux density and stator currents of a variable frequency induction motor transformer.28th Oct 1929Box 32 \ 4  Scan063
Page describing the effect of low frequency on currents within a complete stator circuit.29th Oct 1929Box 32 \ 4  Scan064
Readings and observations for a variable frequency induction motor transformer with a three-phase stator to single-phase rotor.29th Oct 1929Box 32 \ 4  Scan065
Request to improve the accident proofness of an H.T. transformer by supplying an iron grid and a rubber mat.20th Feb 1930Box 32 \ 4  Scan066
Dynamometer testing of Havoline and Packard engine oils.25th Aug 1910Box 32 \ 4  Scan067
Extract regarding the satisfactory starting of an engine by hand magneto as on a Mercedes chassis.2nd Oct 1914Box 32 \ 4  Scan068
To Mr. Johnson detailing the results of a rough test comparing De Dion Oil with the standard Prices B oil.19th Sep 1910Box 32 \ 4  Scan069
Results of a De Dion oil test, its composition, and comparison with other oils.24th Sep 1910Box 32 \ 4  Scan070
Short typed memo regarding testing De Dion oil and future experiments.24th Sep 1910Box 32 \ 4  Scan071
Lubricating oils for car engines, gearboxes, and axles, and requesting recommendations.1st Sep 1919Box 32 \ 4  Scan072
Current prices and usage of various lubricating oils for car and aero engines.2nd Sep 1919Box 32 \ 4  Scan073
Cover note forwarding a letter from Messrs. Edgar Vaughan & Co. for necessary action.17th Dec 1919Box 32 \ 4  Scan074


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