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
Faults and proposed solutions for wiring, starter motor pinions, and rocker cover fixings.28th Mar 1935Box 25 \ 1  Scan033
Order from the War Office for 50 20/25 HP engines and fittings for tanks.31th Oct 1932Box 25 \ 1  Scan034
Contract for 50 engines for a Light Tank and unresolved issues with the War Office regarding screening specifications.8th Dec 1932Box 25 \ 1  Scan035
Request for a contract to cover the immediate production of a modified set for parallel testing.8th Dec 1932Box 25 \ 1  Scan036
Tests conducted on an air intake silencer for a 25 HP car, including sketches of the modifications.2nd Jan 1933Box 25 \ 1  Scan037
Development and fitting of an air silencer, including a dimensioned sketch.3rd Jan 1933Box 25 \ 1  Scan038
Tests on the air silencer for the 20/25 HP, noting a power drop and suggesting a modification.3rd Jan 1933Box 25 \ 1  Scan039
Performance curves for a tank carburetter under various configurations.14th Feb 1932Box 25 \ 1  Scan040
Cover page with a 'Print Room' stamp.3rd Jan 1933Box 25 \ 1  Scan041
Crankshaft specifications for left-hand Phantom engines to be used in tanks.28th Aug 1933Box 25 \ 1  Scan042
Providing revised inertia and frequency figures for 40/50 engines used in tanks.1st Sep 1933Box 25 \ 1  Scan043
Water flow test results for the Phantom II Tank Engine.2nd Nov 1933Box 25 \ 1  Scan044
Blueprint detailing a water flow test for a PH. II L.H. Tank Engine.30th Oct 1933Box 25 \ 1  Scan045
Issues and proposed modifications for a tank engine's starting handle shaft and a sticking air valve.28th Mar 1935Box 25 \ 1  Scan046
Report card detailing the fitting and testing of extra bonnet clips.11th May 1912Box 25 \ 1  Scan047
Departmental memo discussing a modification from two to three spring clips on the bonnet to prevent rattling.20th Jun 1912Box 25 \ 1  Scan048
Instructions for fitting extra clips on experimental car bonnets.29th Jun 1912Box 25 \ 1  Scan049
Record card detailing the fitting of Bonnet Tongues, part number E 2720.26th Sep 1912Box 25 \ 1  Scan050
Bonnet clips, relaying a report from Hives recommending new standard parts and noting Mr. Royce's opinion.25th Sep 1912Box 25 \ 1  Scan051
Experiment regarding a bonnet clip, initiated by a suggestion to create and test a sample set.26th Aug 1913Box 25 \ 1  Scan052
Extract discussing an experiment with bonnet clips designed not to scratch frame strips, which has been incorporated into universal bonnets.31th Dec 1913Box 25 \ 1  Scan053
Request to produce designs for a sample bonnet clip set, referencing an attached suggestion.31th Dec 1913Box 25 \ 1  Scan054
Vibrating bonnets and the potential strengthening of spring clips.4th Feb 1914Box 25 \ 1  Scan055
Internal correspondence regarding the standardization of a new bonnet design due to closing difficulties.5th Feb 1914Box 25 \ 1  Scan056
Internal query asking for an opinion on the bonnet clips fitted to chassis 2704 compared to standard fittings.7th Feb 1914Box 25 \ 1  Scan057
Request for an opinion on the satisfaction of bonnet clips fitted to car 2704 compared to standard cars.9th Feb 1914Box 25 \ 1  Scan058
Follow-up request for a reply to a memo concerning bonnet clips on Chassis 2704.4th Feb 1914Box 25 \ 1  Scan059
Departmental memo regarding the urgency of experiments, requesting more information on a bonnet clip design.16th Feb 1914Box 25 \ 1  Scan060
To Mr Hives requesting an opinion on bonnet clips fitted to car 2704.17th Feb 1914Box 25 \ 1  Scan061
Delayed reply about bonnet clips caused by it being incorrectly addressed.17th Feb 1914Box 25 \ 1  Scan062
The correspondence history regarding a design for non-scratching bonnet clips.26th Jan 1914Box 25 \ 1  Scan063
Chasing an outstanding report on bonnet clips for model 2704.28th Feb 1914Box 25 \ 1  Scan064
Following up on a delayed report concerning bonnet clips fitted to vehicle 2704.5th Mar 1914Box 25 \ 1  Scan065
To Mr. Hives regarding a failure to reply to correspondence about 'Bonnet Clips'.17th Mar 1914Box 25 \ 1  Scan066
Testing a new type of bonnet and bonnet clips.17th Mar 1914Box 25 \ 1  Scan067
Opinion on new bonnet clips, with a handwritten reply.10th Feb 1914Box 25 \ 1  Scan068
Correspondence regarding the ineffectiveness of new bonnet clips to prevent vibration or ease opening.19th Mar 1914Box 25 \ 1  Scan069
The modification of the X695 bonnet clip for the latest 24° Universal Radiator and Bonnet.21th Mar 1914Box 25 \ 1  Scan070
Experiment to measure the load on bonnet catch springs to address difficulty in opening the bonnet.12th Jan 1915Box 25 \ 1  Scan071
Weight figures for bonnets to resolve issues with stiff bonnet springs.12th Jan 1915Box 25 \ 1  Scan072
Information about bonnet catch springs that may require modification.6th Feb 1915Box 25 \ 1  Scan073
Report on the weight capacity and quantity of bonnet catch springs.9th Feb 1915Box 25 \ 1  Scan074
The modification of bonnet catch springs for chassis 49 GB.11th Feb 1915Box 25 \ 1  Scan075
Inquiry about the readiness of bonnet catch springs for chassis 49 GB for inspection and trial.20th Feb 1915Box 25 \ 1  Scan076
Instruction note confirming the bonnet latch springs on chassis 49GB are ready for inspection after adjustment.23th Feb 1915Box 25 \ 1  Scan077
Requesting the weight of the altered universal bonnet springs.3rd Mar 1915Box 25 \ 1  Scan078
Requesting a reply regarding universal bonnet springs.15th Mar 1915Box 25 \ 1  Scan079
Positioning of bonnet clips and Mr. Royce's preference for testing a new catch before production changes.27th Aug 1919Box 25 \ 1  Scan080
Re-fitting bonnet fasteners closer together for improved usability and operation.28th Aug 1919Box 25 \ 1  Scan081
Sending two blueprints for a 40/50 Chassis rear bonnet fastener to have a model set made for approval.17th Oct 1919Box 25 \ 1  Scan082
Blue Prints and experimental numbers for bonnet fastener catches on various schemes.24th Oct 1919Box 25 \ 1  Scan083
Fitting of experimental parts to specific chassis.10th Dec 1919Box 25 \ 1  Scan084
Completion and supercedence of several experimental parts.23th Dec 1919Box 25 \ 1  Scan085
List of new parts fitted and modifications made to a car for a 10,000-mile run.1st Jan 1920Box 25 \ 1  Scan086
The 10,000-mile test of the 2EX chassis, detailing a battery issue and a list of parts for standardisation.9th Apr 1920Box 25 \ 1  Scan087
Suggested design changes for the bonnet lock, referencing a letter from America.13th Aug 1920Box 25 \ 1  Scan088
Letter suggesting design changes to the bonnet, including adding lifting handles and a lock.31th Jul 1920Box 25 \ 1  Scan089
Suitability of locks for American use and a proposal to standardize with Yale locks.19th Nov 1920Box 25 \ 1  Scan090
Testing of new suggestions for bonnet catches.19th Nov 1920Box 25 \ 1  Scan091
Letter from the American branch proposing a modification to the bonnet catches to prevent rattling and improve handling.29th Oct 1920Box 25 \ 1  Scan092
Springfield's insistence on having handles for bonnets on cars for America.6th Jul 1921Box 25 \ 1  Scan093
Extract regarding bonnet handles for American cars, noting the issue has been raised with Mr. Royce.6th Jul 1921Box 25 \ 1  Scan094
Letter confirming the dispatch of 'BIM' bonnet fasteners, an invoice, and fitting pamphlets.30th Aug 1924Box 25 \ 1  Scan095
Assembly instructions for the BIM bonnet fastener, in French.28th Aug 1924Box 25 \ 1  Scan096
French language advertisement leaflet for a 'BIM' bonnet latch, complete with illustrations.8th Jan 1927Box 25 \ 1  Scan097
Design and necessary improvements for bonnet fittings, clips, and locks on various car models.8th Jan 1927Box 25 \ 1  Scan098
Alternative schemes and design details for a bonnet lock for the 40/50 and 20 HP models.3rd Jan 1927Box 25 \ 1  Scan099
Design details for a gear wheel, pin connections, and bonnet fasteners, referencing associated sketches.6th Jan 1927Box 25 \ 1  Scan100
Design improvements for bonnet clips and overall bonnet aesthetics, weighing style against practical constraints.6th Jan 1927Box 25 \ 1  Scan101
Trials for a novel bonnet fastener and a new lock.22th Mar 1927Box 25 \ 1  Scan102
Decision to proceed with detailing a new Phantom bonnet lock design.28th Mar 1927Box 25 \ 1  Scan103
The detailing of Phantom bonnet locks.1st Apr 1927Box 25 \ 1  Scan104
Modifications to the Phantom bonnet catch and a query about a missing polished strip on the 20 HP model.10th Sep 1927Box 25 \ 1  Scan105
Addition of a polished strip to the 20 HP bonnet for improved appearance.12th Sep 1927Box 25 \ 1  Scan106
Querying the status and suitability of a new design for 'SS' and G.4. bonnet fasteners and locks.6th Nov 1928Box 25 \ 1  Scan107
Loss of knobs from push-type bonnet catches during tests, proposing a new locking device.13th Aug 1929Box 25 \ 1  Scan108
Introduction of an improved bonnet lock and the deletion of the standard version.28th May 1930Box 25 \ 1  Scan109
Standardisation of an improved type of bonnet lock to overcome complaints.17th Dec 1929Box 25 \ 1  Scan110
Requesting the production of 8 spring plates to prevent rattles on bar type bonnet locks.3rd Nov 1931Box 25 \ 1  Scan111
Bonnet movement issues and the performance of Vaughan bonnet locks, suggesting an improved bar type lock.5th Nov 1931Box 25 \ 1  Scan112
Issues with bonnet locks and fastenings and suggesting a modification.23th Nov 1931Box 25 \ 1  Scan113
Complaint of battered and worn aluminium edges on the bonnet locks of several cars.24th Nov 1931Box 25 \ 1  Scan114
Complaints of bonnet lock wear on the Phantom II, discussing various lock types and solutions.26th Nov 1931Box 25 \ 1  Scan115
Bonnets for the 129-GN London Trials 40/50 HP vehicle.27th Nov 1931Box 25 \ 1  Scan116
Potential issue with 40/50 HP bonnets and a proposed modification to the locks.26th Nov 1931Box 25 \ 1  Scan117
Proposal to change from the standard Yale bonnet lock to an R's Bar type lock on the 40/50 HP chassis.9th Dec 1931Box 25 \ 1  Scan118
Whether to fit new bar type bonnet locks or retain Yale locks on 40/50 HP chassis.15th Jan 1932Box 25 \ 1  Scan119
Enquiries be made to potential suppliers of bonnet fasteners.1st Jan 1932Box 25 \ 1  Scan120
Suitability and issues with different bonnet locks, comparing the Vaughan lock to a bar-type lock for P.2. chassis.19th Jan 1932Box 25 \ 1  Scan121
Query regarding a price discrepancy for Phantom II bonnet locks.21th Jan 1932Box 25 \ 1  Scan122
Internal memorandum regarding confusion over cost figures for bonnet locks.23th Jan 1932Box 25 \ 1  Scan123
Feedback on various types of bonnet fasteners from different suppliers.5th Feb 1932Box 25 \ 1  Scan124
Request for confirmation of verbally quoted costs for bonnet fasteners, which seem high.20th Feb 1932Box 25 \ 1  Scan125
Suitability of Vaughan locks versus bar type locks for the bonnet on the 20/25 chassis.22th Feb 1932Box 25 \ 1  Scan126
Confirming the factory costs and savings related to bonnet fasteners for the Phantom II and 20/25 HP models.23th Feb 1932Box 25 \ 1  Scan127
The decision not to standardise the Bar Type bonnet lock for the 25 HP model.26th Feb 1932Box 25 \ 1  Scan128
Dispatching one pair of bonnet locks to Mr. Bellringer for car 19-G4.25th Jul 1932Box 25 \ 1  Scan129
Cost, manufacturing process, and standardization of bonnet fasteners.2nd Sep 1932Box 25 \ 1  Scan130
Urgent internal memo requesting instructions for fitting bonnet locks to J.3.3rd Sep 1932Box 25 \ 1  Scan131
Internal request to obtain a sample of Amal bonnet fasteners.6th Sep 1932Box 25 \ 1  Scan132


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