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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DescriptionDateIdentifier
Letter from The British Thermostat Co., Ltd. confirming a sample thermostat is being made to drawing BGA. 3754.20th Dec 1937Box 156 \ 1  scan0356
Despatch of a master thermostat casing for setting thermostats on 'M' series Bentley cars.23th Dec 1937Box 156 \ 1  scan0357
Forwarding a master casing for thermostats to the British Thermostat Co. Ltd. and increasing an order.23th Dec 1937Box 156 \ 1  scan0358
Letter to British Thermostat Co. Ltd. regarding a master thermostat casing and an increased order.23th Dec 1937Box 156 \ 1  scan0359
Letter from The British Thermostat Co., Ltd. regarding an order for thermostats, referencing drawings and parts.28th Dec 1937Box 156 \ 1  scan0360
Forwarding a copy of a letter sent to Messrs. S. Smith & Sons Ltd.30th Dec 1937Box 156 \ 1  scan0361
Letter to S.Smith & Sons Ltd. regarding an invoice for a thermostat and a request for a second one for testing.30th Dec 1937Box 156 \ 1  scan0362
Letter from S. Smith & Sons regarding a misunderstanding over a charge for a B.V. Thermostat, code X.30065.31th Dec 1937Box 156 \ 1  scan0363
Letter to S. Smith & Sons Ltd. regarding test results and requested alterations for a thermostat unit.3rd Jan 1938Box 156 \ 2  scan0001
Request for a drawing and quotation for 1,000 thermostat units for a 25 HP Vauxhall with a modified temperature setting.3rd Jan 1938Box 156 \ 2  scan0002
Quotation letter from The British Thermostat Co., Ltd. for 1,000 thermostats.4th Jan 1938Box 156 \ 2  scan0003
Blueprints for a Bentley 11 Thermostat System and Thermometer Bottle.4th Jan 1938Box 156 \ 2  scan0004
Letter from S. Smith & Sons regarding the performance and supply of thermostat units.6th Jan 1938Box 156 \ 2  scan0005
Official order for one thermostat from S. Smith & Sons Ltd.10th Jan 1938Box 156 \ 2  scan0006
Letter from S. Smith & Sons confirming an order for a thermostat set to start opening at 78/80° C.10th Jan 1938Box 156 \ 2  scan0007
Official order be placed for a modified thermostat from S. Smith & Sons Ltd.10th Jan 1938Box 156 \ 2  scan0008
Letter to S. Smith & Sons Ltd. requesting a new thermostat and discussing dissatisfaction with the temperature range of another.8th Jan 1937Box 156 \ 2  scan0009
Letter from S. Smith & Sons concerning the specifications and testing of a thermostat.14th Jan 1938Box 156 \ 2  scan0010
Thermostat bypass scheme to reduce cost and a change in the thermostat unit to reduce weight.21th Jan 1938Box 156 \ 2  scan0011
Requesting the production of a second set of parts for a Bentley II thermostat scheme experiment.21th Jan 1938Box 156 \ 2  scan0012
Official order be sent to Messrs. S.Smith & Sons for a thermostat unit and conversion work.25th Jan 1938Box 156 \ 2  scan0013
The return of a thermostat unit to S. Smith & Sons Ltd. for modification.25th Jan 1938Box 156 \ 2  scan0014
Letter to The British Thermostat Co. Ltd. regarding the specifications for a thermostat sample.25th Jan 1938Box 156 \ 2  scan0015
Letter to S. Smith & Sons Ltd. discussing modifications and quotes for a special thermostat unit.25th Jan 1938Box 156 \ 2  scan0016
Letter to S. Smith & Sons Ltd. requesting a second unit of a specified valve type.25th Jan 1938Box 156 \ 2  scan0017
Letter from The British Thermostat Co., Ltd. regarding a sample thermostat and drawing BGA. 3754.26th Jan 1938Box 156 \ 2  scan0018
Letter from S. Smith & Sons acknowledging an order for a thermostat, code X.30065, and advising of a delay in providing a quotation.26th Jan 1938Box 156 \ 2  scan0019
Quotation letter from S. Smith & Sons for Thermostat units.28th Jan 1938Box 156 \ 2  scan0020
Request to supply a thermostat assembly, pump cover, and bypass pipe for a streamlined M-series Bentley II chassis.4th Feb 1938Box 156 \ 2  scan0021
Return of a failed Bentley thermostat unit for examination and replacement.11th Feb 1938Box 156 \ 2  scan0022
Letter from The British Thermostat Co. acknowledging the failure of a thermostat referenced by drawing number EB. 3509.14th Feb 1938Box 156 \ 2  scan0023
Letter from a supplier discussing the failure of a thermostatic unit and proposing a solution.15th Feb 1938Box 156 \ 2  scan0024
Letter concerning thermostat bellows failure and proposed testing of experimental units.16th Feb 1938Box 156 \ 2  scan0025
Letter from The British Thermostat Co. regarding a suggestion for a baffle plate for a thermostat.16th Feb 1938Box 156 \ 2  scan0026
Failure of a bellows unit in an M.Series thermostat system.17th Feb 1938Box 156 \ 2  scan0027
Analysis of a bellows unit failure, discussing valve opening dimensions and awaiting manufacturer information.17th Feb 1938Box 156 \ 2  scan0028
Letter from The British Thermostat Co. Ltd. discussing a failed thermostatic unit and proposed solutions.15th Feb 1938Box 156 \ 2  scan0029
Return and repair of two thermostat units, one to be repaired free of charge.17th Feb 1938Box 156 \ 2  scan0030
Letter to The British Thermostat Co. Ltd. regarding a potential bellows failure in a unit.18th Feb 1938Box 156 \ 2  scan0031
Instruction to despatch a Thermostat Unit for repair to British Thermostat Co. Ltd.18th Feb 1938Box 156 \ 2  scan0032
Letter concerning a potential bellows fault on a new unit due to water pressure and assuring future deliveries will be correct.19th Feb 1938Box 156 \ 2  scan0033
Letter from The British Thermostat Co. Ltd. concerning the testing and return of bellows assemblies.21th Feb 1938Box 156 \ 2  scan0034
Instruction to fit a thermostat and a stainless steel thrust plug to the B.III No.1 engine unit while on the test bed.10th Mar 1938Box 156 \ 2  scan0035
Letter detailing the results of testing new thermostat units and their bellows measurements after 450 miles of running.11th Mar 1938Box 156 \ 2  scan0036
The unsatisfactory performance of bellows units, detailing measurements and operational concerns.11th Mar 1938Box 156 \ 2  scan0037
List of measurements for bellows length and valve lift under various conditions.12th Mar 1938Box 156 \ 2  scan0038
Letter from The British Thermostat Co. Ltd. requesting the return of a discharged thermostat for measurement clarification.12th Mar 1938Box 156 \ 2  scan0039
Thermostat unit being sent for repair to The British Thermostat Co. Ltd.15th Mar 1938Box 156 \ 2  scan0040
Sending a thermostat unit for repair to The British Thermostat Co. Ltd.15th Mar 1938Box 156 \ 2  scan0041
Letter to The British Thermostat Co. Ltd. regarding revised measurements for a thermostat bellows unit.15th Mar 1938Box 156 \ 2  scan0042
The second page of a letter from the Experimental Department concerning alterations to figures.15th Mar 1938Box 156 \ 2  scan0043
Table of measurements detailing the movement of a bellows unit under various conditions.18th Mar 1938Box 156 \ 2  scan0044
Letter to The Drayton Regulator Co. requesting lists and particulars of automobile thermostats and bellows.18th Mar 1938Box 156 \ 2  scan0045
Letter from The British Thermostat Co., Ltd. regarding a disagreement over bellows measurements.28th Mar 1938Box 156 \ 2  scan0046
Letter from a supplier discussing dimensional discrepancies of a returned bellows unit and suggesting a material change for rebuilding.28th Mar 1938Box 156 \ 2  scan0047
Request to send an official order to S. Smith & Sons Ltd. for a thermostat with a special opening temperature.28th Mar 1938Box 156 \ 2  scan0048
Letter of complaint regarding a supplied American car heater, comparing it unfavorably to a lighter unit and requesting a specific thermostat.28th Mar 1938Box 156 \ 2  scan0049
Letter from The British Thermostat Co. regarding the forwarding of a thermostat and proceeding with the manufacture of 50 units.30th Mar 1938Box 156 \ 2  scan0050
Letter to The British Thermostat Co. Ltd. regarding the use of 'Alumbro' for thermostat bellows and measurement discrepancies.30th Mar 1938Box 156 \ 2  scan0051
Letter discussing car heater component failures and requesting quotations for new parts.31th Mar 1938Box 156 \ 2  scan0052
The M. series Bentley thermostat unit, discussing material changes and testing.31th Mar 1938Box 156 \ 2  scan0053
Letter from a supplier regarding thermostat characteristics, the composition of 'Alumbro', and a quotation for car heater motors.1st Apr 1938Box 156 \ 2  scan0054
Letter from The British Thermostat Co. Ltd. concerning prices, a car heater switch and acknowledging receipt of drawings.2nd Mar 1938Box 156 \ 2  scan0055
Requesting an official order for a thermostat fitted with 'Alum-bro' material bellows.2nd Mar 1938Box 156 \ 2  scan0056
Letter concerning overheated motor rheostats and a request for further specifications before providing a quotation.4th Apr 1938Box 156 \ 2  scan0057
Letter from S. Smith & Sons clarifying a confusion over a special thermostat order and associated part codes.5th Apr 1938Box 156 \ 2  scan0058
Letter to S. Smith & Sons Ltd. clarifying thermostat specifications, size, and opening temperature.5th Apr 1938Box 156 \ 2  scan0059
Requesting an official order for one thermostat from The British Thermostat Co. Ltd.1st Apr 1938Box 156 \ 2  scan0060
Letter to S. Smith & Sons Ltd regarding the testing of a thermostat and its bellows unit.6th Apr 1938Box 156 \ 2  scan0061
Letter to The British Thermostat Co. Ltd. regarding thermostats and their replacements.8th Apr 1938Box 156 \ 2  scan0062
Short telegram message confirming a convenient time for a meeting or call.9th Apr 1938Box 156 \ 2  scan0063
Letter from S. Smith & Sons regarding thermostat performance and bellows specifications after a 10,000-mile test.9th Apr 1938Box 156 \ 2  scan0064
Letter from S. Smith & Sons regarding the examination of Bellows for thermostats.9th Apr 1938Box 156 \ 2  scan0065
Request for an official order to The British Thermostat Co. Ltd. for one thermostat.11th Apr 1938Box 156 \ 2  scan0066
Letter to The British Thermostat Co. Ltd. regarding the testing and comparison of thermostats and heater motors.12th Apr 1938Box 156 \ 2  scan0067
Letter discussing the two fans used on a motor and their power consumption.13th Apr 1938Box 156 \ 2  scan0068
Letter from The British Thermostat Co., Ltd. regarding sample thermostats, bellows, and heater switch wattage.13th Apr 1938Box 156 \ 2  scan0069
Letter from The British Thermostat Co. Ltd. regarding modifications to rheostats and a mislaid sample motor.22th Apr 1938Box 156 \ 2  scan0070
Letter from The British Thermostat Co. Ltd. regarding a carburetter and thermostat units.22th Apr 1938Box 156 \ 2  scan0071
Sending a thermostat to central stores for return to The British Thermostat Co. Ltd.22th Apr 1938Box 156 \ 2  scan0072
Letter to The British Thermostat Co. Ltd. regarding the return and investigation of a sample thermostat with 'Alumbro' bellows.22th Apr 1938Box 156 \ 2  scan0073
Letter from The British Thermostat Co. regarding a water hammer issue caused by a bellows and valve area mismatch.23th Apr 1938Box 156 \ 2  scan0074
Sending a thermostat to the Repair Stores for modification by the British Thermostat Co. Ltd.25th Apr 1938Box 156 \ 2  scan0075
Request to detail a modified thermostat valve and thermostat casing with increased dimensions.26th Apr 1938Box 156 \ 2  scan0076
Request to modify a casing and create two valves to test a thermostat modification for M series Bentley thermostats.20th Apr 1938Box 156 \ 2  scan0077
Letter from S. Smith & Sons regarding an investigation into a thermostat bellows that failed to fully open.27th Apr 1938Box 156 \ 2  scan0078
Letter from S. Smith & Sons regarding an investigation into a thermostat bellows issue and the supply of new samples.3rd May 1938Box 156 \ 2  scan0079
Letter to S. Smith & Sons Ltd. regarding the testing and supply of thermostats and heaters.5th May 1938Box 156 \ 2  scan0080
Letter from S. Smith & Sons regarding the production of a smaller heater model and checking the length of bellows.6th May 1938Box 156 \ 2  scan0081
Letter from S. Smith & Sons to Mr. C.S. Steadman regarding the despatch and specifications of two thermostats.9th May 1938Box 156 \ 2  scan0082
Thermostats and an order for two special units from the British Thermostat Co. Ltd.10th May 1938Box 156 \ 2  scan0083
Letter to the British Thermostat Co. Ltd. regarding the testing of bellows to eliminate water hammer and an adjustment to an order.10th May 1938Box 156 \ 2  scan0084
Investigation into intermittent noise on 'M' series Bentley cars, traced to the thermostat valve operation and a proposed solution.10th May 1938Box 156 \ 2  scan0085
Instruction to hold production and fit a modified thermostat to M series Bentley car heaters to prevent noise complaints.10th May 1938Box 156 \ 2  scan0086
Internal request to send an official order for two thermostats already received from S. Smith & Sons Ltd.11th May 1938Box 156 \ 2  scan0087
Letter from The Drayton Regulator and Instrument Company Ltd regarding past correspondence and a proposal to supply Hydroflex bellows.13th May 1938Box 156 \ 2  scan0088
Further tests on thermostats for 'M' Series Bentley cars, focusing on valve and bellows combinations to resolve oscillation issues.16th May 1938Box 156 \ 2  scan0089
Letter concerning a rescheduled meeting to discuss Bellow requirements and to correct a typographical error from a previous letter.16th May 1938Box 156 \ 2  scan0090
Letter to The Drayton Regulator & Instrument Co. Ltd. regarding a thermostat unit quote and bellows.10th May 1938Box 156 \ 2  scan0091
Letter of complaint to S. Smith & Sons Ltd. regarding the exorbitant pricing of supplied experimental thermostats.16th May 1938Box 156 \ 2  scan0092


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