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).
Rolls-Royce Experimental Archives                
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DescriptionDateIdentifier
Request to construct and fit a different cam and throttle lever arrangement for an automatic idling device.13th Dec 1934Box 156 \ 1  scan0056
Request to F.W. Miller & Co. to manufacture a bimetallic strip and provide performance data.15th Dec 1934Box 156 \ 1  scan0057
Internal request to order one bimetal strip from F.W. Miller & Co. Ltd.17th Dec 1934Box 156 \ 1  scan0058
Letter from F. W. Miller & Co., Ltd. acknowledging a request for a Thermostatic Metal coil.17th Dec 1934Box 156 \ 1  scan0059
Letter from F.W. Miller & Co., Ltd. regarding a sample Thermostatic Bi-metal Coil.20th Dec 1934Box 156 \ 1  scan0060
Request to order four bimetal spiral strips with specific dimensions from F.W. Miller and Co. Ltd.19th Dec 1934Box 156 \ 1  scan0061
Dispatching a bimetal coil and a Harrison Vee radiator matrix sample to two separate parties.27th Dec 1934Box 156 \ 1  scan0062
Letter to a supplier returning a faulty bimetal coil and requesting a replacement with modified specifications.27th Dec 1934Box 156 \ 1  scan0063
Letter from The Packless Gland Co. Ltd. regarding a material failure on an experimental Bentley Mixture Control unit.15th Jan 1935Box 156 \ 1  scan0064
Comparing a 'Tank' Thermostat with a standard 'SMITHERMET' thermostat.18th Jan 1935Box 156 \ 1  scan0065
Requesting an urgent order for six modified Spectre Water Temperature Regulating Thermostats.15th Mar 1935Box 156 \ 1  scan0066
Return of six thermostats that do not conform to temperature limits.3rd Apr 1935Box 156 \ 1  scan0067
Letter of complaint regarding the return of six faulty thermostats that did not meet temperature specifications.3rd Apr 1935Box 156 \ 1  scan0068
Letter from The British Thermostat Co. Ltd. regarding the testing and adjustment of six thermostats, including a table of results.10th Apr 1935Box 156 \ 1  scan0069
Letter discussing the design and manufacturing challenges of a bellows thermostat, highlighting issues with adjustment, tolerances, and the lack of a movement stop.10th Apr 1935Box 156 \ 1  scan0070
Letter from The British Thermostat Co. Ltd. discussing the complex and costly construction of thermostat E.86612.15th Apr 1935Box 156 \ 1  scan0071
Letter to The British Thermostat Co. Ltd. discussing the testing and performance of their corrected thermostats.15th Apr 1935Box 156 \ 1  scan0072
Letter discussing production difficulties and proposed specifications for new thermostats, including temperature limits and alternative spring arrangements.15th Apr 1935Box 156 \ 1  scan0073
Letter from The British Thermostat Co. Ltd. regarding the design and manufacturing of thermostats, part number E. 86612, for a cooling system.16th Apr 1935Box 156 \ 1  scan0074
Thermostat testing procedures, operating temperatures, valve operation, and bellows design.16th Apr 1935Box 156 \ 1  scan0075
Letter from The British Thermostat Co. Ltd. providing suggestions on valve temperature settings and manufacturing.24th Apr 1935Box 156 \ 1  scan0076
Letter to The British Thermostat Co. Ltd. discussing design alterations for thermostats, part no. E.86612.24th Apr 1935Box 156 \ 1  scan0077
Letter discussing valve temperature settings and design alterations for bellows length.29th Apr 1935Box 156 \ 1  scan0078
Development, testing, and standardization of an isolated change speed lever for a Bentley.29th Apr 1935Box 156 \ 1  scan0079
Request for two sets of Spectre Thermostat Upper Valves to be made.30th Apr 1935Box 156 \ 1  scan0080
Urgent order for six modified thermostats from the British Thermostat Co. Ltd.3rd May 1935Box 156 \ 1  scan0081
Letter to The British Thermostat Co. Ltd. following up on a previous query and placing an order for six thermostats with specific temperature requirements.3rd May 1935Box 156 \ 1  scan0082
Letter from The British Thermostat Co. Ltd. discussing the specifications of thermostat part number E.86612.7th May 1935Box 156 \ 1  scan0083
Page two of a letter from The British Thermostat Co. Ltd. discussing a valve stem.8th May 1935Box 156 \ 1  scan0084
Letter from a supplier discussing an order for thermostats and proposing a potentially costly design modification.8th May 1935Box 156 \ 1  scan0085
Letter of inquiry to S. Smith & Sons, Ltd. regarding the manufacture of a car thermostat.8th May 1935Box 156 \ 1  scan0086
Letter from S. Smith & Sons regarding the design and specifications of thermostat E.86612.10th May 1935Box 156 \ 1  scan0087
Letter from S. Smith & Sons discussing the operational forces on a thermostat valve and proposing modifications.10th May 1935Box 156 \ 1  scan0088
Requesting the testing of a remote-acting thermostat and outlining the correct experimental setup.13th May 1935Box 156 \ 1  scan0089
Letter to the British Thermostat Co. Ltd. regarding an urgent order for thermostats and proposing an alternative model.15th May 1935Box 156 \ 1  scan0090
Letter to supplier S. Smith & Sons discussing the manufacture and design of a spring-loaded thermostat.15th May 1935Box 156 \ 1  scan0091
Letter requesting advice on the balance of a thermostat with regard to water pressure.15th May 1935Box 156 \ 1  scan0092
Letter from The British Thermostat Co., Ltd. discussing an order for thermostats, specifically regarding the bellows length and design.16th May 1935Box 156 \ 1  scan0093
Letter from The British Thermostat Co. Ltd. discussing thermostat design and temperature specifications.16th May 1935Box 156 \ 1  scan0094
Letter from S. Smith & Sons regarding the design, specifications and testing of a thermostatic valve.16th May 1935Box 156 \ 1  scan0095
Letter to The British Thermostat Co. Ltd. querying the design, manufacture, and temperature range of thermostats.17th May 1935Box 156 \ 1  scan0096
Letter requesting technical data on temperature range and bellows rate to understand certain difficulties.17th May 1935Box 156 \ 1  scan0097
Letter from The British Thermostat Co. Ltd. discussing thermostat design and the lack of an adjustment feature.20th May 1935Box 156 \ 1  scan0098
Manufacturing challenges and supply of thermostats and bellows.20th May 1935Box 156 \ 1  scan0099
Page discussing the function and efficiency of a thermostat as a mixing valve in a cooling system.20th May 1935Box 156 \ 1  scan0100
Engine cooling system thermostat and by-pass operation, including water flow timings and temperature control.20th May 1935Box 156 \ 1  scan0101
Letter comparing the specifications of different thermostat bellows.20th May 1935Box 156 \ 1  scan0102
Letter from The British Thermostat Co. Ltd. to Rolls-Royce discussing thermostat manufacturing and design feedback.21th May 1935Box 156 \ 1  scan0103
Remote acting thermostat from H.M. Hobson Limited and a proposed interview.21th May 1935Box 156 \ 1  scan0104
Letter from H.M. Hobson Ltd. regarding tests and specifications for a remote acting thermostat.20th May 1935Box 156 \ 1  scan0105
Confirming a conversation about the thermostat shutter operation on the Spectre.28th May 1935Box 156 \ 1  scan0106
Letter chasing an overdue order for a special water temperature regulating thermostat from S. Smith & Sons Ltd.6th Jun 1935Box 156 \ 1  scan0107
The testing of a Hobson remote acting thermostat, noting issues with sticking and comparing it to standard calorstats.7th Jun 1935Box 156 \ 1  scan0108
Graph plotting temperature against force for a Hobson Remote Acting Thermostat at different lift settings.6th Jun 1935Box 156 \ 1  scan0109
Graph plotting the lift of a top plate against temperature for a Hobbs remote acting thermostat test.6th Aug 1935Box 156 \ 1  scan0110
Letter from S. Smith & Sons regarding ongoing thermostat experiments and awaiting fluids with a higher boiling point.7th Jun 1935Box 156 \ 1  scan0111
Letter from The British Thermostat Co., Ltd. regarding the dimensions of an experimental apparatus.26th Oct 1935Box 156 \ 1  scan0112
Letter to S. Smith & Sons specifying the requirements for a thermostat bellows to operate bonnet shutters.23th Oct 1935Box 156 \ 1  scan0113
Request for an opinion on the design specifications for bellows needed for a thermostat.23th Oct 1935Box 156 \ 1  scan0114
Letter outlining the technical requirements for a thermostat bellows to operate bonnet shutters.23th Oct 1935Box 156 \ 1  scan0115
Letter requesting an opinion on the design for the smallest size and length of bellows for a thermostat.23th Oct 1935Box 156 \ 1  scan0116
Letter from S. Smith & Sons concerning thermostats for automatic louvres.26th Oct 1935Box 156 \ 1  scan0117
Letter from The British Thermostat Co. Ltd. regarding the dispatch and testing of a bonnet louvre control unit.28th Oct 1935Box 156 \ 1  scan0118
Letter to Ford Motor Co. requesting information about the thermostat-operated bonnet shutters on Lincoln cars.26th Oct 1935Box 156 \ 1  scan0119
Letter to The British Thermostat Co. Ltd. regarding a thermostat unit and arranging a meeting to discuss bellow manufacture.29th Oct 1935Box 156 \ 1  scan0120
Letter from The British Thermostat Co., Ltd. arranging a meeting with Mr. Steadman.30th Oct 1935Box 156 \ 1  scan0121
Letter from Ford Motor Company regarding thermostat operated bonnet side plate shutters on their Lincoln Car.30th Oct 1935Box 156 \ 1  scan0122
Letter to The Ford Motor Company Ltd. regarding a visit from their Lincoln representative.2nd Nov 1935Box 156 \ 1  scan0123
Letter to The British Thermostate Co. Ltd. arranging a meeting to discuss thermostatic problems.4th Nov 1935Box 156 \ 1  scan0124
Telegram received by telephone regarding an appointment.6th Nov 1936Box 156 \ 1  scan0125
Letter from The British Thermostat Co. regarding a drawing and calculations for a Bonnet Louvre Thermostat.12th Nov 1935Box 156 \ 1  scan0126
Letter to The British Thermostat Co. regarding incorrect calculations for a Bonnet Louvre Thermostat.19th Nov 1935Box 156 \ 1  scan0127
Letter discussing bellows load calculations, pointing out design inaccuracies, and requesting further information on radiator curves.19th Nov 1935Box 156 \ 1  scan0128
Revised calculations for bellows for use with a bonnet louvre scheme suggested by the British Thermostat Co.19th Nov 1935Box 156 \ 1  scan0129
Review of a book on thermostats published in the I.A.E. journal.21th Nov 1934Box 156 \ 1  scan0130
Review of the book 'Thermostats' by Roosevelt Griffiths, discussing temperature control technology.14th Feb 1934Box 156 \ 1  scan0131
Summary of a book on automobile coach painting, carburettor 'hot spotting', and thermostats.14th Feb 1934Box 156 \ 1  scan0132
Letter from The British Thermostat Co. Ltd. regarding a Bonnet Louvre Thermostat.22th Nov 1935Box 156 \ 1  scan0133
Letter from The British Thermostat Co. Ltd. to Mr. C. Steadman regarding the sending of charts.27th Nov 1935Box 156 \ 1  scan0134
Requesting the despatch of a Calorstat part on loan to The British Thermostat Co.Ltd.4th Dec 1935Box 156 \ 1  scan0135
Letter to The British Thermostat Co. Ltd. regarding the supply and testing of Calorstats.4th Dec 1935Box 156 \ 1  scan0136
Letter concerning corrections to calculations on a drawing for thermostat bellows.5th Dec 1935Box 156 \ 1  scan0137
Page 2 of a letter from The British Thermostat Co. Ltd. regarding the design of bellows for thermostats.5th Dec 1935Box 156 \ 1  scan0138
Design calculations and specifications for a Bonnet Thermostat.7th Dec 1935Box 156 \ 1  scan0139
Letter from The British Thermostat Co. Ltd. regarding an experimental Bonnet Louvre Thermostat.7th Dec 1935Box 156 \ 1  scan0140
Letter from The British Thermostat Co. Ltd. apologising for a delay in replying regarding the manufacture of Calorstats part no. E. 80893.9th Dec 1935Box 156 \ 1  scan0141
Quotation letter from The British Thermostat Co. Ltd. for Calorstats part number E. 80893.16th Dec 1935Box 156 \ 1  scan0142
Letter to The British Thermostat Co. Ltd. requesting a missing cooling chart that compares different matrix types.20th Dec 1935Box 156 \ 1  scan0143
Thermostatic water temperature control for cars with dummy shutters.20th Dec 1935Box 156 \ 1  scan0144
The return of a bonnet shutter operating thermostat borrowed from The British Thermostat Co.23th Dec 1935Box 156 \ 1  scan0145
Letter from F. W. Miller & Co. acknowledging a request for a further sample coil.31th Dec 1934Box 156 \ 1  scan0146
Tests conducted on thermostatically controlled bonnet shutters, comparing a Ph.III car with a Lincoln.1st Jan 1936Box 156 \ 1  scan0147
Conclusions and summary on the effectiveness of thermostatically controlled bonnet and radiator shutters.1st Jan 1936Box 156 \ 1  scan0148
To suspend work on thermostatically controlled bonnet louvres for the Phantom III following test results.6th Jan 1936Box 156 \ 1  scan0149
Letter to the British Thermostat Co. Ltd. regarding the design and testing of a bonnet louvre thermostat.7th Jan 1936Box 156 \ 1  scan0150
Letter discussing the price quote for an E.80893 Calorstat, comparing it to a competitor's price and requesting a reduction.7th Jan 1936Box 156 \ 1  scan0151
Letter from The British Thermostat Co., Ltd. regarding a delay in providing particulars for a proposed Shutter Thermostat.9th Nov 1935Box 156 \ 1  scan0152
Letter from a supplier discussing the benefits and combination of water thermostats and thermostatically controlled radiator shutters.8th Jan 1936Box 156 \ 1  scan0153
Instructing a change to the calorstat spring for various vehicle models.14th Jan 1936Box 156 \ 1  scan0154
Letter to The British Thermostat Co.Ltd. discussing a discrepancy in radiator core performance data and calculations.23th Jan 1936Box 156 \ 1  scan0155


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