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 to Messrs. Joseph Lucas Ltd requesting to try out a 12-volt Bosch High Frequency Electric Horn.18th Jan 1932Box 59 \ 3  Scan141
Obtaining a substitute Lucas horn for a 40/50 chassis test due to delays with a sample Lucas-Bosch horn.21th Jan 1932Box 59 \ 3  Scan142
Correspondence regarding a sample Lucas type HF.415 Alto Horn with a chromium-plated 'Grille' front.22th Jan 1932Box 59 \ 3  Scan143
The correct naming convention for a new high-frequency horn from Joseph Lucas Ltd to avoid trademark issues with Bosch.26th Jan 1932Box 59 \ 3  Scan144
Cancellation of a sample request for a Lucas H.F. Alto Horn.27th Jan 1932Box 59 \ 3  Scan145
The forwarding of a Lucas H.F. Alto Horn to Derby.28th Jan 1932Box 59 \ 3  Scan146
Transfer and credit for a second-hand Lucas alto horn.25th Feb 1932Box 59 \ 3  Scan147
Required accessories for the first J.3. Enclosed Limousine.25th Feb 1932Box 59 \ 3  Scan148
Testing and fitting of a new Special Lucas high frequency horn, model HF.722.27th Feb 1932Box 59 \ 3  Scan149
Testing and mounting of new Lucas H.F. electric horns, comparing them to Bosch horns.7th Feb 1932Box 59 \ 3  Scan150
Request to obtain a Lucas high frequency horn, type H.F.722, for chassis 19-EX.9th Mar 1932Box 59 \ 3  Scan151
Requesting a modified bracket to mount a special H.F. horn onto the front of chassis 19-EX.9th Mar 1932Box 59 \ 3  Scan152
Confirming the return of a Lucas HF Alto horn to the makers for readjustment.18th Mar 1932Box 59 \ 3  Scan153
Letter to Joseph Lucas Ltd. regarding the testing and feedback on the Lucas 'Alto' horn type HF.722.22th Mar 1932Box 59 \ 3  Scan154
Comparing a Klaxon High Frequency horn with a Lucas Alto horn and requesting one be fitted to a test car.22th Mar 1932Box 59 \ 3  Scan155
Requesting to obtain a sample of a Klaxon H.F. horn for testing purposes.23th Mar 1932Box 59 \ 3  Scan156
The despatch of a Lucas HF.722 Alto Horn to Sales.23th Mar 1932Box 59 \ 3  Scan157
The trial of a new Lucas HF Alto horn and obtaining a Klaxon horn for testing.23th Mar 1932Box 59 \ 3  Scan158
Replacement of an unsatisfactory Klaxon horn with a preferred Lucas horn.4th Apr 1932Box 59 \ 3  Scan159
Fitting and testing of Lucas and Klaxon electric horns.4th Apr 1932Box 59 \ 3  Scan160
Requesting particulars of a new electric high-frequency horn for potential use on their chassis.5th Apr 1932Box 59 \ 3  Scan161
The approved mounting position for horns on the front of cars.6th Apr 1932Box 59 \ 3  Scan162
Development, production, and testing of new Lucas electric horns (type HF.722).6th Apr 1932Box 59 \ 3  Scan163
The fitting of a new horn and modification of the starter switch on model 58-GN.3rd Apr 1932Box 59 \ 3  Scan164
Returning a Klaxon HF5 electric horn and ordering a Lucas HF.722 horn for a specific car.20th Apr 1932Box 59 \ 3  Scan165
Mounting schemes and tests for a new Lucas electric horn.2nd May 1932Box 59 \ 3  Scan166
The replacement of Klaxon type electric horns with new Lucas H.F. 722 horns.4th May 1932Box 59 \ 3  Scan167
Policy on electric horns, ceasing purchase of Klaxon type and accommodating the new Lucas H.F. 722 horn.4th May 1932Box 59 \ 3  Scan168
The standardization of horns by fitting a Lucas horn to a chassis.5th May 1932Box 59 \ 3  Scan169
Instructions for fitting two Lucas electric horns to chassis 19.G.4 and retaining the original Klaxon horn.13th May 1932Box 59 \ 3  Scan170
Order request for a Lucas H.F. 722 electric horn for chassis 20-EX.19th May 1932Box 59 \ 3  Scan171
Internal request to obtain two Lucas Electric Horns, type HF.722, for order numbers 54856 and 54870.28th May 1932Box 59 \ 3  Scan172
Standardisation of Lucas horns for the 20/25 HP Chassis 'V' series.13th Jun 1932Box 59 \ 3  Scan173
Order request for a Lucas HF.722 horn for chassis 19-EX.17th Jun 1932Box 59 \ 3  Scan174
Schemes for mounting new high-frequency electrical horns on a chassis.18th Jun 1932Box 59 \ 3  Scan175
Letter to Joseph Lucas Co. Ltd. about experiments with sounding two Lucas Horns together to double the power.20th Jun 1932Box 59 \ 3  Scan176
The 'beat' note for chassis electrical horns, discussing placement issues and a potential design for a lighter twin-diaphragm horn.22th Jun 1932Box 59 \ 3  Scan177
Expense and practicality of mounting two synchronized electrical horns versus a single Lucas horn.23th Jun 1932Box 59 \ 3  Scan178
Letter to Joseph Lucas Ltd. suggesting a new dual electro-magnetic horn design to save cost, weight, and space.24th Jun 1932Box 59 \ 3  Scan179
Letter from Joseph Lucas Research Laboratories regarding difficulties encountered in the development of a two-note horn assembly.1st Jul 1932Box 59 \ 3  Scan180
Suggestion to Messrs. Lucas for a dual-sound electric horn system.4th Jul 1932Box 59 \ 3  Scan181
Electrical specifications for the Lucas HF Horn No. HF.722.7th Jul 1932Box 59 \ 3  Scan182
Test report comparing the audibility of Lucas High Frequency and Klaxon motor-driven horns.7th Jul 1932Box 59 \ 3  Scan183
Vibration and sound issues related to horn mountings on the Japan and Peregrine car models.12th Jul 1932Box 59 \ 3  Scan184
Test results for a Lucas H.F. electric horn, noting its pitch and frequency compared to experimental models.12th Jul 1932Box 59 \ 3  Scan185
Internal request to order one Lucas HF.722 electric horn with a chromium finish for chassis 19.G.IV.13th Jul 1932Box 59 \ 3  Scan186
Investigation into a bad sound produced by a standardized horn mounting on certain car models.14th Jul 1932Box 59 \ 3  Scan187
Provision of a Lucas Alto Horn type F.H.722 for Chassis 19.G.1V.21th Jul 1932Box 59 \ 3  Scan188
Vibration issues in high-frequency horn mountings and suggested solutions.2nd Aug 1932Box 59 \ 3  Scan189
Copy of a letter regarding the fitting of a Lucas horn and the repositioning of the existing Bosch horn.26th Aug 1932Box 59 \ 3  Scan190
Price comparison for standardising a dual horn system on the 40/50 model.30th Aug 1932Box 59 \ 3  Scan191
Standardisation of a Lucas Horn (HF-722) fitted under the front apron.13th Jun 1932Box 59 \ 3  Scan192
Form for the standardization of a front fork part for 'V' Series chassis.29th Jul 1932Box 59 \ 3  Scan193
Standardisation report for fitting a Lucas horn under the front apron.9th Jun 1932Box 59 \ 3  Scan194
Form for the standardisation of chassis parts, detailing the replacement of Klaxons.9th Jun 1932Box 59 \ 3  Scan195
Blueprint for a bracket to mount Lucas high-frequency horns on headlamp pillars.1st Sep 1932Box 59 \ 3  Scan196
Requesting the return of a Lucas horn HF722 to the manufacturer for examination.1st Sep 1932Box 59 \ 3  Scan197
Letter to Joseph Lucas Ltd. regarding a faulty Lucas HF722 horn.1st Sep 1932Box 59 \ 3  Scan198
Letter from Joseph Lucas Limited concerning the testing and performance of a returned Alto Horn.15th Sep 1932Box 59 \ 3  Scan199
The second page of a letter from Joseph Lucas Limited.15th Sep 1932Box 59 \ 3  Scan200
Order for 5 Lucas HF.722 electric horns for the Peregrine Chassis.23th Sep 1932Box 59 \ 3  Scan201
Sending a Lucas HF.722 horn to be converted to a detuned type for a dual horn arrangement.23th Sep 1932Box 59 \ 3  Scan202
Instruction to transfer five Lucas Horns between departments.24th Sep 1932Box 59 \ 3  Scan203
The return of Lucas horns for a Peregrine chassis to be tuned as a dual arrangement.3rd Oct 1932Box 59 \ 3  Scan204
The standardisation and new mounting position of two horns on the 'Phantom II'.5th Oct 1932Box 59 \ 3  Scan205
The standardisation of the dual high-frequency electric horn arrangement on the Phantom II chassis.5th Oct 1932Box 59 \ 3  Scan206
Production and inspection of dual high-frequency horns by Lucas.7th Oct 1932Box 59 \ 3  Scan207
Letter to Joseph Lucas Ltd. requesting proposals to lighten the weight of their electric horns for the 40/50 HP cars.7th Oct 1932Box 59 \ 3  Scan208
The despatch of two special chromium-plated horns for inspection.7th Oct 1932Box 59 \ 3  Scan209
Letter from Joseph Lucas Ltd. regarding the possibility of lightening HF.725 Electric Horns.11th Oct 1932Box 59 \ 3  Scan210
Query on the inspection and receipt of sample horns for a dual high-frequency arrangement.17th Oct 1932Box 59 \ 3  Scan211
Faulty Lucas horns for the Peregrine model, requesting a re-test and adjustment.19th Oct 1932Box 59 \ 3  Scan212
Instructions for fitting dual high frequency horns to a Barker Continental Saloon Trials car.21th Oct 1932Box 59 \ 3  Scan213
The unsatisfactory testing of high-frequency electric horns mounted under the apron, recommending against this method.24th Oct 1932Box 59 \ 3  Scan214
The use and fixing of two de-tuned high-frequency horns under the apron for high-speed cars.25th Oct 1932Box 59 \ 3  Scan215
Questioning the correct mounting position for high-frequency electric horns.29th Oct 1932Box 59 \ 3  Scan216
Correcting the positioning of high-frequency electric horns and discussing special chromium-plated horns.31th Oct 1932Box 59 \ 3  Scan217
The progress of fitting a pair of Lucas High Frequency Horns to a Barker Continental Touring Saloon.2nd Feb 1932Box 59 \ 3  Scan218
Requesting a covering order to debit the cost of special horns for the Peregrine I0,000 mile test car.11th Nov 1932Box 59 \ 3  Scan219
The standardisation of fitting Dual High Frequency Horns on 40/50 HP models.11th Nov 1932Box 59 \ 3  Scan220
Fitting or return of two Lucas chromium plated electric horns sent for approval.20th Dec 1932Box 59 \ 3  Scan221
Request to retain two Lucas chromium-plated electric horns fitted to the London Trials Car.22th Dec 1932Box 59 \ 3  Scan222
Proposal from Lucas for an improved 'Alto' Horn with options for Staybrite or Chrome Plated finishes.3rd Jan 1933Box 59 \ 3  Scan223
Review of a sample 'Improved Type Alto Horn' from Messrs. Lucas, noting fitting issues and suggesting design modifications.4th Jan 1933Box 59 \ 3  Scan224
New sample of an improved type Alto Horn, querying if the rim can be made from Staybrite instead of chromium, and noting a fitment issue.4th Jan 1933Box 59 \ 3  Scan225
Disposal of an Alto Horn received from J. Lucas Ltd.6th Jan 1933Box 59 \ 3  Scan226
Requesting the relocation of horns on Peregrine Chassis No.5.6th Feb 1933Box 59 \ 3  Scan227
Confirming the scheme for fitting two horns to the Bensport and Peregrine chassis.13th Feb 1933Box 59 \ 3  Scan228
Letter from Joseph Lucas Ltd arranging a meeting concerning constant voltage equipment and regulator work.21th Feb 1933Box 59 \ 3  Scan229
Letter to Mr. E.A. Watson of Joseph Lucas Ltd. to arrange a meeting.22th Feb 1933Box 59 \ 3  Scan230
Letter to K.L.G. Sparking Plugs Ltd. arranging a meeting to discuss sparking plugs and screening caps.27th Feb 1933Box 59 \ 3  Scan231
Letter from Joseph Lucas Limited providing performance data for R.W. Screen Wipers.3rd Mar 1933Box 59 \ 3  Scan232
Concluding page of a letter from Joseph Lucas Limited to Rolls Royce.3rd Mar 1933Box 59 \ 3  Scan233
Letter to Klaxon Ltd. regarding bench tests on an electric windscreen wiper due to operational trouble.3rd Mar 1933Box 59 \ 3  Scan234
Wiper motor failure due to overheating, excessive current consumption, and component failure.6th Mar 1933Box 59 \ 3  Scan235
Fitting dual high-frequency electric horns to various chassis models.6th Mar 1933Box 59 \ 3  Scan236
Letter from Klaxon Ltd. acknowledging receipt of a communication and promising a full follow-up.6th Mar 1933Box 59 \ 3  Scan237
Letter to Joseph Lucas Ltd. discussing the unsuitability of their windscreen wipers for Rolls-Royce bodies.6th Mar 1933Box 59 \ 3  Scan238
Supplier quality issues, particularly with Lucas regarding windscreen wipers and lamps, and proposing alternative solutions.6th Mar 1933Box 59 \ 3  Scan239
Continuation page of a letter regarding a business meeting with Mr. Robinson of C.A.V. Co.7th Mar 1933Box 59 \ 3  Scan240


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