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
Speedometer calibration for the 40/50 HP chassis, considering different wheel sizes and customer complaints.12th Jan 1934Box 165 \ 4  img234
Request to modify the dials of Bentley Revolution Indicators to show a red triangular space.18th Jan 1934Box 165 \ 4  img235
Return of a Smith Electrical Rev Indicator to the manufacturer for replacement.19th Jan 1934Box 165 \ 4  img236
Letter to S. Smith & Sons Ltd. returning an electrical rev counter due to large temperature variations and requesting a new model for testing.19th Jan 1934Box 165 \ 4  img237
Letter from S. Smith & Sons regarding the return of a sample Electrical Rev Indicator and the promise of a new one.22th Jan 1934Box 165 \ 4  img238
Internal request to order a combined speedometer and instrument patch for an Essex Terraplane car.30th Jan 1934Box 165 \ 4  img239
Cancellation of a speedometer order for a Terraplane if it needs to be imported from the U.S.A.7th Feb 1934Box 165 \ 4  img240
Correspondence regarding a sample rev-counter dial for Bentley Revolution Indicators sent for inspection.9th Feb 1934Box 165 \ 4  img241
The introduction of a new sample dial for Bentley Revolution Indicators.12th Feb 1934Box 165 \ 4  img242
Alteration and production of a revolution indicator dial for the Bentley chassis.12th Feb 1934Box 165 \ 4  img243
Letter from Hasler Telegraph Works discussing the testing and adjustment of Hasler Revolution Indicators.27th Apr 1934Box 165 \ 4  img244
Page 2 of a letter from Hasler Telegraph Works regarding a possible error in revolutions per minute during frequency adjustment.20th Aug 1934Box 165 \ 4  img245
The overhaul of a unique, special lightened type Bentley combined revolution indicator and clock.29th May 1934Box 165 \ 4  img246
The modification and calibration of a Bentley Revolution Indicator.6th Jun 1934Box 165 \ 4  img247
Letter from Kollsman Instrument Co. regarding the redesign and pricing of a type 70-05 tachometer.13th Jun 1934Box 165 \ 4  img248
Request to obtain a speedometer test rig with a 2:1 reduction gear from Jaeger Instruments Ltd.7th Sep 1934Box 165 \ 4  img249
Request to process payment for an invoice received from S. Smith & Sons for a Revolution Indicator.15th Oct 1934Box 165 \ 4  img250
Oil leak on the Bentley speedometer drive, referencing a similar issue on a 20/25 model.17th Oct 1934Box 165 \ 4  img251
Clarifying that a revolution indicator from Messrs. Smiths belongs to the Plant Department.18th Oct 1934Box 165 \ 4  img252
Speedometer change for a Streamlined Bentley due to a new gear ratio.5th Nov 1934Box 165 \ 4  img253
Revised specifications for the Spectre's servo and speedometer drive.9th Nov 1934Box 165 \ 4  img254
Request to determine the wheel revolutions per mile for a 'Spectre' chassis with specific tyres for speedometer calibration.19th Nov 1934Box 165 \ 4  img255
Letter to A.T. Speedometer Co. Ltd. regarding progress on a new speedometer and magnetic interference testing on another model.2nd Jan 1935Box 165 \ 4  img256
Letter from a speedometer supplier regarding magnetic interference tests and a request to borrow an instrument.8th Jan 1935Box 165 \ 4  img257
Request to fit a new type Bentley speedometer and rev counter to vehicle reference 5.B.IV.9th Jan 1935Box 165 \ 4  img258
Letter responding to an enquiry about a Graham Paige speedometer, explaining why one cannot be loaned.15th Jan 1935Box 165 \ 4  img259
Letter from S. Smith & Sons regarding a Graham Paige speedometer and damping issues in sample instruments.16th Jan 1935Box 165 \ 4  img260
Speedometer calibration data for a standard 20/25 chassis with 11/50 axle and 19' tyres.29th Jan 1935Box 165 \ 4  img261
Letter from A.T. Speedometer Co. regarding modifications to returned instruments and upcoming samples.29th Jan 1935Box 165 \ 4  img262
Continuation letter from A. T. Speedometer Co., Ltd. regarding a three-month timeframe.29th Jan 1935Box 165 \ 4  img263
Return of Bentley A.T. instruments for conversion to an up-to-date specification.4th Feb 1935Box 165 \ 4  img264
Expressing concern over delays in developing legible speedometers for R-R and Bentley cars.8th Feb 1935Box 165 \ 4  img265
Proposed improvements to vehicle instruments for Spectre, R-R, and Bentley models.8th Feb 1935Box 165 \ 4  img266
Customer complaints about unreadable mileage figures and the need for immediate improvements.8th Feb 1935Box 165 \ 4  img267
Stock and order status of speedometers for R.R and Bentley Chassis.11th Feb 1935Box 165 \ 4  img268
The return of two A.T. speedometers for modification.13th Feb 1935Box 165 \ 4  img269
Speedometer improvements and supply issues from Smiths for various car models.13th Feb 1935Box 165 \ 4  img270
Proposed modifications for an A.T. Speedometer.14th Feb 1935Box 165 \ 4  img271
Correspondence regarding speedometers for R-R and Bentley cars.15th Feb 1935Box 165 \ 4  img272
Letter to S. Smith & Sons regarding speedometer improvements, specifically requesting larger trip figures for Rolls-Royce and Bentley models.14th Feb 1935Box 165 \ 4  img273
The concluding page of a letter from the Sales Manager regarding the introduction of larger trip figures.16th Feb 1935Box 165 \ 4  img274
Letter to A.T. Speedometer Co. Ltd. regarding the modification of lightweight speedometers and rev-counters.16th Feb 1935Box 165 \ 4  img275
Letter from the A.T. Speedometer Co. Ltd. discussing modifications to instrument dials, drives, and magnets.18th Feb 1935Box 165 \ 4  img276
Letter from The A.T. Speedometer Co. confirming a telephone conversation and enclosing a copy of another letter.18th Feb 1935Box 165 \ 4  img277
Standardization of larger trip figures on speedometers for R-R and Bentley chassis.18th Feb 1935Box 165 \ 4  img278
Correspondence concerning proposals for speedometers with larger trip figures for chassis.20th Feb 1935Box 165 \ 4  img279
Speedometer case sizes, larger trip figures, and concave lighting for R-R and Bentley chassis.21th Feb 1935Box 165 \ 4  img280
Timelines for introduction and concave lighting for instrument panels.21th Feb 1935Box 165 \ 4  img281
Speedometers with larger trip figures for R-R and Bentley chassis, and associated delivery schedules.23th Feb 1935Box 165 \ 4  img282
Letter from S. Smith & Sons regarding a requested modification to speedometers for larger trip figures.22th Feb 1935Box 165 \ 4  img283
Letter to S. Smith & Sons regarding the cost implications of a new shrouded magnet speedometer design.23th Feb 1935Box 165 \ 4  img284
The design and supply of speedometers with larger trip figures and concave lighting for RR and Bentley chassis.22th Feb 1935Box 165 \ 4  img285
Order for two rev counters reading up to 5000 R.P.M.25th Feb 1935Box 165 \ 4  img286
The introduction of new speedometers with larger trip figures and concave lighting for various car models.28th Feb 1935Box 165 \ 4  img287
Timing and cost for introducing an improvement to the Bentley model, including a shrouded magnet design.26th Sep 1935Box 165 \ 4  img288
Design and layout of instruments with concave dials, including a new speedometer.27th Feb 1935Box 165 \ 4  img289
Introduction of new speedometers with larger trip figures and concave lighting for RR and Bentley cars.27th Feb 1935Box 165 \ 4  img290
Order for a 'Spectre' speedometer cable.28th Feb 1935Box 165 \ 4  img291
Speedometers for R-R and Bentley Chassis with larger trip figures.6th Mar 1935Box 165 \ 4  img292
Letter from a supplier explaining a delay in quoting for speedometers due to material sourcing issues.5th Mar 1935Box 165 \ 4  img293
Letter to S. Smith & Sons regarding a supply issue with new magnet steel for speedometers.6th Mar 1935Box 165 \ 4  img294
Visit from S. Smith & Sons to discuss introducing new speedometers with concave dials and larger trip figures.7th Mar 1935Box 165 \ 4  img295
Chassis testing schedules and specifications for instrument panels.7th Mar 1935Box 165 \ 4  img296
Developing larger trip and distance mileage figures for speedometers, noting a competitor has already implemented them.7th Mar 1935Box 165 \ 4  img297
Introduction of modified speedometers for R-R and Bentley cars.8th Mar 1935Box 165 \ 4  img298
Requesting a reversion to the standard attachment method for speedometer and rev counter drive flex.18th Mar 1935Box 165 \ 4  img299
Complaint about poor speedometer lighting and a request for a correct thermometer due to a new axle fitment.24th Apr 1935Box 165 \ 4  img300
Request to alter the speedometer calibration and improve instrument panel illumination for chassis B-10-DG.25th Apr 1935Box 165 \ 4  img301
Letter to A.T. Speedometer Co. Ltd. requesting a form of adjustment for new speedometers.1st May 1935Box 165 \ 4  img302
Request to place an order for a 54' long speedometer flexible drive.2nd May 1935Box 165 \ 4  img303
Letter from the A.T. Speedometer Co., Ltd. regarding two methods for varying the calibration of new instruments.3rd May 1935Box 165 \ 4  img304
Standardisation of an A.T. Speedometer with larger figures on mileage disc and shrouded magnet.1st Mar 1935Box 165 \ 4  img305
Cost estimate for introducing extra jigs and tools for the 'U' series chassis, including a breakdown of costs and an approval log.19th Mar 1935Box 165 \ 4  img306
Standardisation of an A.T. Speedometer with larger figures on mileage discs and shrouded magnets.1st May 1935Box 165 \ 4  img307
Cost estimation for extra jigs, tools and equipment for the 'JW' series chassis, including a cost comparison between old and new parts.19th Mar 1935Box 165 \ 4  img308
Standardisation of an A.T. speedometer with larger figures, designed to improve legibility and reduce weight.1st May 1935Box 165 \ 4  img309
Cost analysis for the standardisation of a spur gear part for the Bentley 'E' series 10Let chassis.26th Mar 1935Box 165 \ 4  img310
Proposal from Smiths to use a single 100 M.P.H. speedometer dial for the 20/25 model.15th May 1935Box 165 \ 4  img311
Letter of complaint to A.T. Speedometer Co. Ltd. regarding noisy speedometer flexible drives.17th May 1935Box 165 \ 4  img312
Letter from a supplier investigating complaints about noisy speedometer flexible drives.21th May 1935Box 165 \ 4  img313
Letter from A. T. Speedometer Co. Ltd. regarding the lubricant for flexible drives.21th May 1935Box 165 \ 4  img314
Cause of noisy speedometer flexes, suggesting that prolonged storage hardens the grease.22th May 1935Box 165 \ 4  img315
Extract from a letter regarding lubricant solidification in flexible speedometer cables due to long storage.21th May 1935Box 165 \ 4  img316
Rejecting a suggestion to change the speedometer dials for the 20/25 model due to legibility concerns.27th May 1935Box 165 \ 4  img317
Letter to A.T. Speedometer Co. Ltd. confirming the decision on speedometer dials for the 20/25 and 40/50 models.28th May 1935Box 165 \ 4  img318
Letter from The A.T. Speedometer Co., Ltd. confirming speedometer dial specifications for the 20/25 and 40/50 models.31th May 1935Box 165 \ 4  img319
Requesting an additional Hasler rev counter for the Experimental Electrical Laboratory.24th Jun 1935Box 165 \ 4  img320
Internal order request for a Hasler Revolution Speeds Indicator for the Electrical Experimental Department.1st Jul 1935Box 165 \ 4  img321
Notice about new type speedometers for Bentley and 20/25 chassis, advising against self-repair.12th Jul 1935Box 165 \ 4  img322
Potential purchase of a Zeiss Ikon Motor Indicator and comparing it with similar British-made instruments.27th Aug 1935Box 165 \ 4  img323
Requesting the return of a faulty Electrical Laboratory Rev Counter due to a sticking needle.30th Aug 1935Box 165 \ 4  img324
Repairs to Hasler Counter No. 30136, quoting a report on its condition and instructing staff not to interfere with instruments awaiting repair.1st Sep 1935Box 165 \ 4  img325
Urgent request to A.T. Speedometer Co. Ltd. for an experimental speedometer for a Bentley chassis.21th Sep 1935Box 165 \ 4  img326
Letter confirming the order and dispatch of one instrument with 759 revs for a Bentley chassis.24th Sep 1935Box 165 \ 4  img327
Request to send an order to the A.T. Speedometer Co. for a Bentley Speedometer.2nd Oct 1935Box 165 \ 4  img328
Request to rewind the solenoid coil for a single cylinder test bed's electrically operated rev-counter.4th Oct 1935Box 165 \ 4  img329
Letter to Mr. E.A. Watson of Joseph Lucas Ltd. arranging a meeting in Birmingham.23th Oct 1935Box 165 \ 4  img330
Request to locally procure 24 Detonindex neon tubes for ignition pencil indicators.24th Oct 1935Box 165 \ 4  img331
Letter to S. Smith & Sons Ltd. inquiring about the development of electrical rev counters for their chassis.12th Nov 1935Box 165 \ 4  img332
Letter from S. Smith & Sons regarding experiments on a new electrical Rev. Indicator and sample availability.13th Nov 1935Box 165 \ 4  img333


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