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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Assembly and connection of a condenser, with a reference to an attached print.31th Mar 1931Box 165 \ 5  img050
Proposal for an experimental circular R.R. Condenser design.31th Mar 1931Box 165 \ 5  img051
Expressing interest in cylindrical condensers for ignition, requesting to see an experimental model.23th Apr 1931Box 165 \ 5  img052
Request for Halo-wax impregnating material for experiments on Peregrine battery ignition condensers.16th Aug 1932Box 165 \ 5  img053
Request for the production of two further Peregrine ignition condensers for testing purposes.18th Aug 1932Box 165 \ 5  img054
Laboratory tests for a new type of circular condenser for a battery ignition system.23th Aug 1932Box 165 \ 5  img055
Technical memorandum comparing a new condenser's performance against the standard one for battery ignition systems.23th Aug 1932Box 165 \ 5  img056
Graph plotting insulation resistance and capacity against temperature for a condenser.22th Aug 1932Box 165 \ 5  img057
Graph comparing the variation of condenser capacity and insulation resistance with temperature for standard and new circular condensers.22th Aug 1932Box 165 \ 5  img058
New type of circular condenser for the R.R. battery ignition system.31th Aug 1932Box 165 \ 5  img059
Request to instruct Mr. Brock to produce three Peregrine condensers impregnated with Halowax.31th Aug 1932Box 165 \ 5  img060
New connection and cable eye parts for the Peregrine II and Japan III ignition condenser.16th Nov 1932Box 165 \ 5  img061
Letter from Joseph Lucas Limited to H.E. West regarding the construction of a new condenser and a forthcoming quotation.6th Feb 1933Box 165 \ 5  img062
Letter to Joseph Lucas Limited requesting four different capacity condensers for testing.7th Feb 1933Box 165 \ 5  img063
Letter to Joseph Lucas Ltd. regarding a potential short circuit issue with a sectioned condenser's insulation.10th Feb 1933Box 165 \ 5  img064
Letter from Joseph Lucas Limited regarding an experimental condenser sample and arrangements to prevent short circuits.13th Feb 1933Box 165 \ 5  img065
Letter from Joseph Lucas Limited regarding the dispatch of condensers with modifications.14th Feb 1933Box 165 \ 5  img066
Letter from L. A. Gamblen regarding the supply of ignition condensers and a related technical paper on ionization.1st Apr 1933Box 165 \ 5  img067
Letter to The Telegraph Condenser Co. enclosing a blueprint and requesting a quotation for condensers.3rd Apr 1933Box 165 \ 5  img068
Internal memorandum discussing the reliability and construction of battery ignition condensers to avoid ionization.4th Apr 1933Box 165 \ 5  img069
Letter from L. A. Gamblen requesting full electrical data for sample condensers being made by the Telegraph Condenser Co. Ltd.5th Apr 1933Box 165 \ 5  img070
Letter from The Telegraph Condenser Company requesting specifications for ignition condensers.5th Apr 1933Box 165 \ 5  img071
Letter from The Telegraph Condenser Co. Ltd. outlining their expertise and reasons for Rolls Royce to use their condensers.5th Apr 1933Box 165 \ 5  img072
Letter from The Telegraph Condenser Co. Ltd. discussing their specialisation in condensers suitable for tropical and ignition conditions.5th Apr 1933Box 165 \ 5  img073
Cover letter to Mr. L.A. Gamblen enclosing a copy of correspondence sent to The Telegraph Condenser Co.6th Apr 1933Box 165 \ 5  img074
Letter to The Telegraph Condenser Co. arranging a works visit to discuss points raised in their previous correspondence.6th Apr 1933Box 165 \ 5  img075
Letter to Mr. L.A. Gamblen returning an I.E.E. paper on the ionization of condensers.7th Apr 1933Box 165 \ 5  img076
From The Telegraph Condenser Company, Limited confirming a meeting with Mr West.8th Apr 1933Box 165 \ 5  img077
Letter to The Telegraph Condenser Co. Ltd. postponing a visit and rescheduling a meeting.10th Apr 1933Box 165 \ 5  img078
Letter from The Telegraph Condenser Company Limited confirming a meeting arrangement.11th Apr 1933Box 165 \ 5  img079
Letter to The Telegraph Condenser Co. Ltd. confirming a visit and discussing specifications for ignition condensers.13th Apr 1933Box 165 \ 5  img080
Test results for waxed paper samples and suggesting further experiments with plain paper for condensers.13th Apr 1933Box 165 \ 5  img081
Letter to The Telegraph Condenser Co. Ltd. chasing progress on sample R.R. ignition condensers for experimental testing.5th May 1933Box 165 \ 5  img082
Letter from The Telegraph Condenser Company Limited regarding the despatch of Ignition Condenser samples.9th May 1933Box 165 \ 5  img083
Issue with hygroscopic tape in condensers for 20/25, Bensport, and 40/50 chassis.10th May 1933Box 165 \ 5  img084
Revised production specification for the condenser for 20/25 and 40/50 battery ignition systems.11th May 1933Box 165 \ 5  img085
Production test procedure for a paper dielectric condenser used in battery ignition systems.11th May 1933Box 165 \ 5  img086
Specification outlining the testing procedure for a condenser.12th May 1933Box 165 \ 5  img087
Letter from The Telegraph Condenser Company regarding the dispatch of three condenser samples for testing.12th May 1933Box 165 \ 5  img088
Request to test a sample of special impregnated wax from the Telegraph Condenser Co. Ltd. for comparative tests on condensers and coils.15th May 1933Box 165 \ 5  img089
Tests of 20/25 & 40/50 battery ignition condensers, comparing paraffin waxed paper with plain paper impregnated with wax after winding.15th May 1933Box 165 \ 5  img090
Manufacturing process for condensers, specifically the use of wax for impregnation and the benefits of wax paper over plain paper.17th May 1933Box 165 \ 5  img091
Letter from The Telegraph Condenser Company Limited discussing graphs for ignition condensers and requesting test method details.18th May 1933Box 165 \ 5  img092
Graph plotting the capacity against temperature for various tin foil ignition condensers.18th May 1933Box 165 \ 5  img093
Graph showing the capacity of ignition condensers versus temperature at different frequencies.18th May 1933Box 165 \ 5  img094
Rejection of condenser paper due to pigmentation and its effect on ignition coil performance.18th May 1933Box 165 \ 5  img095
Supply, testing, and production use of condenser paper from various suppliers.19th May 1933Box 165 \ 5  img096
Comparison of leakage and insulation resistance tests between TCC Wax and RR Wax.25th May 1933Box 165 \ 5  img097
Letter to The Telegraph Condenser Co. Ltd. regarding the testing of a special impregnating wax sample.27th May 1933Box 165 \ 5  img098
Letter from The Telegraph Condenser Company regarding coil impregnating wax and ignition condensers.30th May 1933Box 165 \ 5  img099
Comparative test report on two different types of ignition coil impregnating wax.31th May 1933Box 165 \ 5  img100
Remarkable insulation properties of a new T.C.C. impregnating wax for ignition coils.3rd Jun 1933Box 165 \ 5  img101
The supply of ignition coil impregnating wax for testing.12th Jun 1933Box 165 \ 5  img102
Requesting the composition of ignition coil impregnating wax for examination.12th Jun 1933Box 165 \ 5  img103
Letter to The Telegraph Condenser Co.Ltd. regarding satisfactory tests on ignition condensers and a future bulk order.24th Jun 1933Box 165 \ 5  img104
Letter from The Telegraph Condenser Co. Ltd. regarding the satisfactory testing of their condensers.26th Jun 1933Box 165 \ 5  img105
Instructions for comparing a coil insulated with plain paper to the same coil filled with brown wax.13th Jul 1933Box 165 \ 5  img106
Test report detailing ignition coil secondary voltages under various conditions.17th Jul 1933Box 165 \ 5  img107
Test report on ignition coil secondary voltages under different temperature and battery conditions.11th Jul 1933Box 165 \ 5  img108
Test results for a Lucas condenser, measuring capacity and resistance at various temperatures during heating and cooling cycles.18th Jul 1933Box 165 \ 5  img109
Tests of six condensers comparing oil silk and tape insulation, noting high leakages.28th Jul 1933Box 165 \ 5  img110
Test results for a Delco-Remy condenser, showing capacity and resistance at various temperatures during heating and cooling cycles.3rd Jun 1933Box 165 \ 5  img111
Summary of research into the causes of excessive leakage in battery ignition condensers.3rd Aug 1933Box 165 \ 5  img112
Recommendation to adopt a new circular T.C.C. condenser for 20/25 and 40/50 HP chassis.1st Aug 1933Box 165 \ 5  img113
Recommending to cease manufacturing in-house ignition condensers and adopt the circular T.C.C. type.3rd Aug 1933Box 165 \ 5  img114
Improvement of standard squashed condensers and testing new circular type condensers.6th Sep 1933Box 165 \ 5  img115
Unsuitability of the standard squashed condenser and the proposal to switch to a double contact/breaker ignition unit.12th Sep 1933Box 165 \ 5  img116
Comparison test between an R.R. condenser and a T.C.C. condenser at 800 R.P.M.14th Sep 1933Box 165 \ 5  img117
Performance issues with battery ignition condensers and testing of alternatives.15th Sep 1933Box 165 \ 5  img118
Letter to The Telegraph Condenser Co. Ltd. requesting a further 6 condensers for testing.15th Sep 1933Box 165 \ 5  img119
Order for T.C.C. battery ignition condensers.15th Sep 1933Box 165 \ 5  img120
Internal request to order three 4 microfarad T.C.C. Mansbridge type condensers.6th Oct 1933Box 165 \ 5  img121
The testing of new circular condensers for car ignition on the Peregrine Chassis.5th Jan 1934Box 165 \ 5  img122
Request to gather data on circular condensers from the Telegraph Condenser Co. by fitting them to all experimental cars.5th Jan 1934Box 165 \ 5  img123
Letter discussing condensers for battery ignition, including tests, impregnating wax, and production orders.16th Jan 1934Box 165 \ 5  img124
Specifications for a T.C.C. Condenser D.74117.17th Jan 1934Box 165 \ 5  img125
Letter regarding the performance and specifications of condensers, comparing them to German practice.17th Jan 1934Box 165 \ 5  img126
Internal order request for six condensers from the Telegraph Condenser Co.18th Jan 1934Box 165 \ 5  img127
Proposal to use a new circular ignition condenser from the Telegraph Condenser Co. to save on production costs.20th Feb 1934Box 165 \ 5  img128
Internal request to order three condensers from the Telegraph Condenser Co. Ltd.4th Apr 1934Box 165 \ 5  img129
Cover letter for the production test specification for new circular type condensers made by the Telegraph Condenser Co. Ltd.30th Jul 1934Box 165 \ 5  img130
Production test specification for a battery ignition condenser made by Telegraph Condenser Co. Ltd.30th Jul 1934Box 165 \ 5  img131
Letter from a supplier regarding a delay and a potential slackness issue with ignition condensers for order 66221.31th Jul 1934Box 165 \ 5  img132
Inquiry to Telegraph Condenser Co. Ltd. about the physical qualities and potential deleterious effects of brown wax for ignition coil windings.9th Oct 1934Box 165 \ 5  img133
Letter from The Telegraph Condenser Company regarding the properties and suitability of a supplied brown wax for use in condensers.18th Oct 1934Box 165 \ 5  img134
Letter requesting drawings and specifications for electrolytic and paper condensers.17th Apr 1935Box 165 \ 5  img135
Letter to a customer regarding an ignition failure on a Bentley and the sourcing of new condensers.24th Apr 1935Box 165 \ 5  img136
Letter to E.K.Cole Ltd. regarding the standardization of a suppression condenser for car radio sets.24th Apr 1935Box 165 \ 5  img137
Letter responding to a query about the installation of extra filter units and condensers in vehicle body wiring.29th Apr 1935Box 165 \ 5  img138
Two failures of a battery ignition condenser due to a fractured flexible connection.29th Apr 1935Box 165 \ 5  img139
Letter to The Telegraph Condenser Co. Ltd. to arrange a meeting regarding a radio condenser question.10th May 1935Box 165 \ 5  img140
Request to fit an ignition coil impregnated with I.C.I 'Seekay' wax to engine 1.B.IV.28th May 1935Box 165 \ 5  img141
Letter from Bernard Hopps of Lodge Plugs regarding a faulty condenser on his 3.5 litre Bentley.3rd Jun 1935Box 165 \ 5  img142
Letter to Lodge Plugs Ltd. about a condenser failure due to a short flexible connection.4th Jun 1935Box 165 \ 5  img143
Letter from Lodge Plugs Ltd regarding a condenser failure on a Bentley and a request for a spare part.7th Jun 1935Box 165 \ 5  img144
Letter from The Telegraph Condenser Company regarding breakdown voltage curves for ignition and car radio condensers.20th Jun 1935Box 165 \ 5  img145
Graph showing average breakdown voltage versus temperature curves for a T.C.C. car radio condenser.19th Jun 1935Box 165 \ 5  img146
Graph of average breakdown voltage versus temperature curves for ignition condensers.19th Jun 1935Box 165 \ 5  img147
Specification request for a small high-tension laboratory testing condenser for use in aero ignition experiments.7th Sep 1935Box 165 \ 5  img148
Order for a laboratory testing condenser for ignition experiments.17th Sep 1935Box 165 \ 5  img149


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