Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 79\3\        Box Selection

IdentifierEntry
scan0001 Alterations by Mr. Royce to an indicator diagram apparatus, detailing a proposed epicyclic gear drive.
View original record COPY To EFC. from E. 17th March X. 2981 - RE INDICATOR DIAGRAM APPARATUS E3/G17317. With reference to the above, you will recollect that we had a conversation concerning the details some two weeks…

scan0002 Procedure for creating an engine indicator diagram using an epicyclic case and pressure gauge readings.
View original record R.R. 235 A (400 T) (S.C. 538. 15-2-16) G. 1546. -2- E3/G17317 Contd. epicyclic case, and let it make .5 revolution against a pawl mechanism, it will move the timing of the indicator valve with…

scan0003 With a sketch detailing a simple, belt-driven vertical cylinder pump design.
View original record E3/G17317. Contd. -3- [Handwritten annotations on drawing] BELT DRIVE TO ELECTRIC MOTOR SAY 2 or 3 - 1 GEAR REDUCTION SAY 5 or 6 - 1 JOCKY TENSION CRANK THROW CENTRE [Typed text] The design should be…

scan0004 Schematic diagram of an indicator diagram apparatus.
View original record INDICATOR DIAGRAM APPARATUS LEC-743 PRESSURE GAUGE AIR VESSEL OIL PUMP RELIEF VALVE COCK ROTARY INDICATOR VALVE OIL TANK ELECTRIC MOTOR 1/2 Crank shaft speed FOR READING PRESSURES BELOW ATMOSPHERE…

scan0005 Return of an Indicator Diagram Apparatus and a proposal for its epicyclic gear's use in magneto investigation.
View original record R.R. 235 A (400 T) (S.C.836-18-2-16) U.1946 To E. from EFC. EFC1/T24.3.17. X.2981 - INDICATOR DIAGRAM APPARATUS. We return herewith the original LeC.743 Indicator Diagram Apparatus, having taken the…

scan0006 Letter to Professor B. Hopkinson inquiring about an optical indicator for aero engines.
View original record R.R. 235 a (400 T) (S.C. 536 15-2-16) G. 1546. 26th March 1917. Prof. B. Hopkinson, Engineering Laboratory, Cambridge University. Dear Sir, Re Indicating Aero Engines. We desire to take accurate…

scan0007 Design and application of an indicator diagram apparatus for aero engines.
View original record To Na. from EFC. EFC4/AT27.3.17 X. 2981. - INDICATOR DIAGRAM APPARATUS. We attach herewith a copy of a memo we have received from Mr. Elliott together with LeC. sketch LeC.743 outlining a scheme of…

scan0008 Page two of a typed memo requesting copies to stay informed on a particular matter.
View original record -2- EFC4/AT27.3.17. Contd. let us have copies as we wish to keep absolutely in touch with this. z EFC.

scan0009 Raising questions about the design of an indicator diagram apparatus, specifically concerning the rotary valve and oil system.
View original record R.R. 285 A (400A) (S C. 586 15-2-16) G. 1546. Copy from EFC. c. to Na. X.2981 EFC1/T27. 3. 17. X.2981 - INDICATOR DIAGRAM APPARATUS. In connection with the above, there are one or two points we would…

scan0010 Continuation of a memo discussing an air vessel on a pipe and arranging work with Mr. Nadin.
View original record -2- .EFC1/T26. 3. 17. Contd. smaller air vessel on the pipe in parallel with the gauges? We will arrange right away with Mr. Nadin to make a start on this job. z EFC. R. R. 235 B (200 T) (S. C. 586.…

scan0011 Letter from the Air Board regarding the accuracy of an optical indicator for aero engines.
View original record Any further communication on this subject should be addressed to:- The Secretary, Air Board Office, Strand, W.C.. and the following number quoted. Telegraphic Address:- "AIRMINISTRY, LONDON."…

scan0012 Responding to a query on the indicator diagram apparatus, detailing valve design, relief valve placement, and oil pump configuration.
View original record To EFC. from E. ? E2/B31.3.17. RE X.2981 - INDICATOR DIAGRAM APPARATUS. With reference to your memo EFC1/T27317, I deal with the points in the order in which you have mentioned them. Mr. Royce prefers…

scan0013 Technical note on controlling pressure growth using an oil pump, air vessel, and indicator valve for engine diagrams.
View original record Contd. -2- R.R. 235 A (400) (S C. 536 15-2-15) G. 1546. be varied by hand to just over-run the growth of the pressure caused by the successive openings of the indicator valve. I cannot see any other…

scan0014 Instruction sheet for an order to Messrs. Hormald & Hestenton for one brass casting.
View original record R.R. 238 (96 Bks.) (SC. 587. 7.3.16). Bm. 2/41/27. ROLLS-ROYCE LIMITED. Copy INSTRUCTIONS. To. Messrs. Hormald & Hestenton 7-7- 1917 Order No. 48509 Customer's No. (X.2981) Re-Differential Gear -…

scan0015 Instructions to machine and fit parts for a Differential Gear-Indicator-Diagram Apparatus based on Drawing J.79.
View original record R.R. 238 (96 Bks.) (S.C. 587. 7.3.16). Bm. 2/41/27. Copy ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Messrs Normald & Peskett Date: 7-7-1917 Order No. 48509 Customer's No. (X.2981) Re-Differential…

scan0016 Instruction to produce patterns from a drawing for a differential gear indicator diagram apparatus.
View original record R.R. 238 (96 Bks.) (SC. 587. 7.3.16). Bm. 2/41/27. (COPY) ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Messrs. Wormald & Cheetham 7-7 1907 Order No. H8509 Customer's No. (X.2981) Re-Differential…

scan0017 Instruction to order various castings from Brown's Foundry for an Indicator Diagram Apparatus 'Three' Throw Pump.
View original record (7.3.16). Bm. 2/41/27. ROLLS-ROYCE LIMITED. INSTRUCTIONS. Copy To: Miss Williamson Order No. H8509 Customer's No. (X.2981) Re Indicator Diagram App - "Three" Throw Pump Please send an order to Brown's…

scan0018 Instructions to Messrs. Normald & Peskett for machining parts for a Three Throw Pump based on blueprints.
View original record R.R. 238 (96 Bks.) (SC. 587. 7.3.16). Bm. 2/41/27. ROLLS-ROYCE LIMITED. INSTRUCTIONS. Copy 11-7-1917 To Messrs. Normald & Peskett Order No. H8509 Customer's No. (X.2981) Re Indicator Diagram App:-…

scan0019 Instruction to Messrs. Wormald & Restorick to make bronze castings for a Three Throw Pump.
View original record R.R. 238 (96 Bks.) (S.C. 587. 7.3.16). Bm. 2/41/27. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Messrs. Wormald & Restorick Order No. H8509 Customer's No. (X.2981) Re Indicator Diagram App: Three "Throw"…

scan0020 Instructions for creating patterns for a three-throw pump indicator-diagram apparatus.
View original record R.R. 238 (96 Bks.) (S.C. 587. 7.3.16). Bm. 2/41/27. ROLLS-ROYCE LIMITED. Copy INSTRUCTIONS. To Messrs. Wormald & Cheetham Order No. H.8509 Customer's No. (X.2781) Re Indicator-Diagram App:- Three…

scan0021 Holding an experiment in abeyance pending further developments with the Dalby-Watson indicator apparatus.
View original record To R. from EFC. c. to BJ. EFC2/T13.10.17. X. 2981 - INDICATOR DIAGRAM APPARATUS In view of what we are doing in connection with the Dalby-Watson optical indicator and the possibility of using this for…

scan0022 Dalby Watson indicator and a patentable method for obtaining engine indicator diagrams.
View original record To EFC. from R. c. to BJ. X.2981. R10/W2.1.18. X.3181 I have an old memo referring to the Dalby Watson indicator. I think this matter should not be lost sight of, and progress should be made to get a…

scan0023 Adoption and development of the Dalby Watson indicator diagram apparatus for aero engines.
View original record X. 2981 To R. from EFC. c. to BJ. EFC1/T5.1.18. X.3181 - DALBY WATSON INDICATOR. X.2981 - INDICATOR DIAGRAM APPARATUS. In answer to your note R10/W2118, with reference to indicators, we received a…

scan0024 Suggesting a simpler indicator scheme to avoid issues found with the Dalby-Watson indicator.
View original record To EFC. from R. c. to BJ. X. 2981 R3/WS.1.18. [Struck through text: X. 2981] X. 3181 - RE DALBY-WATSON & R.R. INDICATORS. With reference to the Dalby-Watson and Rolls-Royce indicator, the scheme I…

scan0025 Confirming a conversation about gathering drawings for the Indicator Diagram Apparatus job.
View original record R.R. 235a (200 T) (S.D. 408. 26-4-17.) Bm. 2/156/12. To Hy/Jn. from EFC: EFC2/T16.1.18. X. 2981 - INDICATOR DIAGRAM APPARATUS. This is to confirm our conversation of yesterday that you will look out…

scan0026 Design and development of an Indicator Diagram Apparatus.
View original record To Srn. from EFC. EFC4/AT13.3.18. X.2981 - INDICATOR DIAGRAM APPARATUS. We have taken up the matter of this Indicator Diagram Apparatus with Mr. Royce. You may remember that this is a scheme for…

scan0027 Suitability of different oil pumps for testing apparatus and Mr. Royce's feedback.
View original record -2- Srn. from EFC.13.3.18. confirmed our opinion on this point. There is also the little oil pump. A rather large three throw oil pump has been detailed out in your office with the idea in view that…

scan0028 Summarizing a meeting about the responsibility for designing experimental test tackle and special devices.
View original record X.2981 To Srn. from EFC, c. to By. c. to Wor. EFC/AT6.4.18. X.3057. X.2981. X.3181. RE EXPTL: TEST TACKLE (SPECIAL DEVICES) At a meeting of officials, called together on Thursday last by Mr. Wormald,…

scan0029 Transfer of an Eagle Engine job and Indicator Diagram Apparatus work to Mr. Bailey's department.
View original record .Contd. -2- EFC/AT6.4.18. just commenced, and therefore this job should be handed over to the Design D.O. which, in this case, will be to Mr. Bailey's Dept. being an Eagle Engine job. With reference…

scan0030 Listing parts required for an Indicator Diagram Apparatus for an Epicyclic Gear and Drive.
View original record R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. To Mr.Peskett from BY/HBO. c. to Mr.Coverley. c. to EFC. 22nd April - 1918. BY/HBO2/H22418. RE INDICATOR DIAGRAM APPARATUS - (EPICYCLIC GEAR &…

scan0031 The receipt of various Hoffman ball bearings for an Indicator Diagram Apparatus.
View original record X2981. Mr. Coverley from EFC. Indicator Diagram Apparatus EFC/AT10.7.18. Please note we have received the following parts which may be had on application at the stores. X.3180. 1S7 small type ball…

scan0032 Proposal for an oil pump to be used for crankshaft testing and other experiments.
View original record X 2981 R.R. 235 A (400 T) (S.C. 536. 15-2-18) G. 1546. to Ey. from E. c. to Da. c. to EH. c. to EFC. X.3289. X.3294. X.2981. E2/G13.7.18. RE OIL PUMP FOR CRANKSHAFT TESTING & OTHER EXPERIMENTS.…

scan0033 Design specification for a multi-cylinder pump, detailing its construction and components, including a sketch.
View original record -2- E2/G13.7.18.Contd. The construction of the pump is as follows.- The pistons are driven by connecting rods, which are in turn driven by eccentrics made solid on a shaft which is dropped into half…

scan0034 Design specifications for an oil pump, valve chest, and associated components.
View original record -3- E2/G13.7.18. Contd. The valve chest containing inlet and delivery valves should be part of the gun metal casting forming the cylinder, and should be incorporated in the flange which holds the…

scan0035 Progress of an indicator for an engine operated by oil pressure.
View original record To R. from EH. c. to BN. c. to E. x.2981 EH11/LG23.9.19. 23rd. Sept. 1919. INDICATOR FOR ENGINE OPERATED BY OIL PRESSURE. We find that all the parts for this are practically completed. We ought to…

scan0036 List of five pressure gauges for an indicator diagram apparatus.
View original record X.2981 26.9.19. X.2981 - Indicator diagram Apparatus. EFC. We have 5 pressure gauges One O - 1500 4 5/8" face " O - 700 4 5/8" " " O - 400 4 5/8" " " O - 100 4 5/8" " " O - 15 central zero gauge 4…

scan0037 Apparatus for indicating pressure in high-speed engines.
View original record To EFC. from R. c. to CJ. X.2981 R1/G22.2.21. X.2981 - RE APPARATUS FOR INDICATING PRESSURE IN HIGH SPEED ENGINES. I should be glad to know if any attempt has been made to prove the value of the…

scan0038 Update on the progress of the Indicator Diagram Apparatus, which was delayed by work on the Goshawk.
View original record R.R. 235B (100 T) (S.H. 798, 10-12-20) G. 2948 X2981 To R. from EFC. c. to CJ. EFC1/T4.3.21. X.2981 - INDICATOR DIAGRAM APPARATUS. The parts for this apparatus have been very nearly completed for some…

scan0039 Assessment of the Royce Indicator Apparatus, detailing missing components and proposing modifications for engine testing.
View original record To Hs. ROYCE INDICATOR APPARATUS. This appears to be almost complete with the exception of a few minor details such as - ball valves and union for sparking plugs. There is, however, no copper piping…

scan0040 Letter from G. Cussons Ltd. regarding a demonstration of the Dalby-Watson Optical Indicator for internal combustion engines.
View original record X-3181 Enclosures Reference G. CUSSONS, Ltd., Telephone : 6991 City, Manchester. Technical Works, LOWER BROUGHTON MANCHESTER, :: LONDON OFFICE and SHOWROOM :: Thanet House - 231 Strand (opposite the…

scan0041 Letter to G. Cussons, Ltd. expressing interest in the Dalby-Watson Optical Indicator for engines.
View original record Messrs. G. Cussons, Ltd., Technical Works, Lower Broughton, Manchester. Dear Sirs, RE DALBY-WATSON OPTICAL INDICATOR. With reference to your letter of the 3rd. inst. re the above Indicator, we are…

scan0042 Letter from G. Cussons, Ltd. regarding particulars and a photo of an Optical Indicator.
View original record X. 2781. G. CUSSONS, Ltd., Telephone : 6991 City, Manchester. Reference F.190 The Technical Works, LOWER BROUGHTON MANCHESTER, :: LONDON OFFICE and SHOWROOM :: Thane House - 231 Strand (opposite the…

scan0043 Letter to Messrs. G. Cussons, Ltd. enquiring about the performance of a Dalby-Watson Optical Indicator.
View original record R.R. 536 A (770 H. & S.D. 442. 9-5-17) G. 1965 X. 31/2981 EFC7/T8917. 8th. Sept. 1917. Messrs. G. Cussons, Ltd., The Technical Works, Lower Broughton Manchester. Dear Sirs, Re Dalby-Watson Optical…

scan0044 Data recording chart with a vertical scale from 0 to 300, produced by G. Cussons Ltd.
View original record X.3181 300 250 200 150 100 50 0 G. CUSSONS, LTD,

scan0045 Letter from G. Cussons, Ltd. regarding the performance testing of an engine indicator.
View original record X.3181 Enclosures Telephone: 6991 City, Manchester. Reference G. CUSSONS, Ltd., The Technical Works, LOWER BROUGHTON MANCHESTER, :: LONDON OFFICE and SHOWROOM :: Thanet House - 231 Strand (opposite…

scan0046 Letter to G. Cussons, Ltd. discussing the Dalby-Watson Optical Indicator and arranging a visit to see it in operation.
View original record X.3181. EFC1/T14917. 14th Sept. 1917. Messrs. G. Cussons, Ltd., The Technical Works, Lower Broughton, Manchester. Dear Sirs, Re Dalby-Watson Optical Indicator. We thank you for your letter of the…

scan0047 Letter from G. Cussons, Ltd. regarding diagrams for an optical indicator and arranging a visit.
View original record X.3181 Enclosures X Telephone: 6991 City, Manchester. Reference Please quote F.190/3 G. CUSSONS, Ltd., The Technical Works, LOWER BROUGHTON MANCHESTER, :: LONDON OFFICE and SHOWROOM :: Thanet House -…

scan0048 Letter to Messrs G. Cussons, Ltd. arranging an inspection visit for a Dalby-Watson Optical Indicator.
View original record X.3181 EFC/AT19.9.17. Sept. 19th. 1917. Messrs G. Cussons, Ltd., Technical Works, Lower Broughton, MANCHESTER. Dear Sirs, RE DALBY-WATSON OPTICAL INDICATOR. In connection with our visit of inspection…

scan0049 Letter from G. Cussons, Ltd. discussing the placement, features, and production of the Dalby Watson Optical Indicator.
View original record X 3181 Telephone : 6991 City, Manchester. Reference G. CUSSONS, Ltd., The Technical Works, LOWER BROUGHTON, MANCHESTER, :: LONDON OFFICE and SHOWROOM :: Thanet House - 231 Strand (opposite the Law…

scan0050 Dalby-Watson Optical Indicator from G. Cussons Ltd.
View original record To R. from EFC. c. to BJ. c. to By. c. to EH RE DALBY-WATSON OPTICAL INDICATOR* - X.3181. On September 3rd. last we received a letter from Messrs. G. Cussons Ltd., Lower Broughton, Manchester, stating…

scan0051 Visit to observe an engine indicator instrument in operation on a test rig.
View original record Contd. -2- We considered that it would be worth while to see this indicator in operation and for this purpose Mr. Bailey suggested that I should pay them a visit on Friday last. I was shown all the…

scan0052 Light spring diagrams with Messrs. Cussons and seeking guidance on continuing the project.
View original record Contd. -3- It appeared, however, that they had not concentrated very much on light spring diagrams and they were not able to show me what I would have liked to have seen in this direction. However,…

scan0053 Dalby-Watson Optical Indicator and the availability of a specially ordered arc lamp.
View original record To EFC. from R. c. to EH. c. to By c. to BJ. EF St. Margaret's Bay Oct. 3rd. 1917. RE DALBY-WATSON OPTICAL INDICATOR X.3181. R5/W31017. With reference to your EFC3/T27917, regarding above, it would be…

scan0054 Letter to G. Cussons Ltd. regarding the use of a Dalby-Watson Optical Indicator on an engine.
View original record X. 3181 EFC3/T51017. Oct. [crossed out] Sept. 5th. 1917. Messrs. G. Cussons Ltd., Technical Works, Lower Broughton, Manchester. Dear Sirs, Re Dalby-Watson Optical Indicator. We have now referred this…

scan0055 Continued letter enquiring about the price and delivery of an indicator for measuring engine cylinder pressure.
View original record Contd. * Sheet 2. of pressure in our cylinders ( and possibly induction pipes) during the exhaust and suction strokes of the engine. We should be glad of information concerning the price of an…

scan0056 Letter from G. Cussons, Ltd. discussing the approval, inspection, and development of an indicator rig.
View original record X 3181 Enclosures G. CUSSONS, Ltd., The Technical Works, LOWER BROUGHTON MANCHESTER, Telephone: 6991 City, Manchester. Reference :: LONDON OFFICE and SHOWROOM :: Thanet House - 231 Strand (opposite…

scan0057 Letter to Messrs. C. Gussons, Ltd. confirming a meeting to view a 12 cylinder engine on test.
View original record X. 3181 EFC/AT211017 Oct. 12th 1917. Messrs. C. Gussons, Ltd., Technical Works, Lower Broughton, MANCHESTER. Dear Sirs, In confirmation of our telegram in answer to yours It will be quite convenient…

scan0058 Post Office Telegraph from Cussons of Manchester arranging an engine inspection in Derby.
View original record Nus Reply paid Roycar Derby attention fowler clark would prefer inspect engine monday morni arriving derby eleven fifty if convenient Cussons manchester

scan0059 Telegram received by telephone regarding a preference for an engine inspection time.
View original record R.R. 144 (48 B.) (SC. 573. 25.2.16) E.P. 1269. Exp & Dept D.O. ROLLS-ROYCE, Limited. X-3181 O.H. TELEGRAM RECEIVED BY TELEPHONE. [Stamp]: OCT 12 1917 Time Received: 11-40 Date: 12.10.17 To: Royce…

scan0060 Confirmation of a telegram sent to Cussons in Manchester regarding a car meeting at the station.
View original record Telegrams: "ROYCAR, DERBY." To Cussons District CONFIRMATION OF TELEGRAM sent to you this day By ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TO { Cussons Manchester Monday will be O.K. car shall…

scan0061 Request to Mr. Southern for a blueprint of the arrangement of an Eagle Aero Engine Series 6 and 7.
View original record R.R. 235 B (380 H) (S.D. 442. 9-5-17) G. 1966. To Mr. Southern. from EFC. EFC1/T25.10.17. X. 3181 Will you kindly supply one blueprint of Argt of Eagle Aero Engine Series 6 and 7, and oblige…

scan0062 Letter to Messrs. G. Cussons Ltd. enclosing blueprints for a Series 6 Eagle Aero Engine and Scheme 251 for an optical indicator rig.
View original record X.3181 EFC4/T27.10.17. Oct. 27th 1917. Messrs. G. Cussons Ltd., Technical Works, Lower Broughton, Manchester. Dear Sirs, As arranged, we now send you a blueprint of the arrangement drawing of our…

scan0063 Letter to G. Cussons Ltd. regarding the testing of an optical indicator on a captured Mercedes 260 HP engine.
View original record R.R. 235 A (770 H) S.D 442, 9-5-17) G. 1965 X.3181 EFC1/T241117. 24th. November 1917. Messrs. G. Cussons Ltd., Technical Works, Lower Broughton, Manchester. Dear Sirs, Re Optical Indicator for R.R.…

scan0064 Letter from G. Cussons Ltd. regarding a delay in a scheme for an indicator rig and requesting a sketch of a Mercedes-Gotha Biplane Engine.
View original record X. 3181 G. CUSSONS, Ltd., The Technical Works, LOWER BROUGHTON MANCHESTER, Telephone : 6991 City, Manchester. :: LONDON OFFICE and SHOWROOM :: Thanet House - 231 Strand (opposite the Law Courts).…

scan0065 Internal request for a general arrangement drawing of a Mercedes-Gotha biplane engine for an indicator rig adaptation.
View original record To BY/JH. from EFC. EFC1/T27.11.17. X.3181 - RE DALBY-WATSON OPTICAL INDICATOR. With reference to the attached, would you kindly have prepared a rough drawing of a general arrangement of the…

scan0066 Letter to Messrs C. Cussons Ltd. regarding photostat arrangements for an optical indicator on a Mercedes Gotha Biplane Engine.
View original record X.3181. EFC2/AT201217 20.12.17. Messrs C. Cussons Ltd., Technical Works, Lower Broughton, Manchester. Dear Sirs, RE OPTICAL INDICATOR. In answer to yours of the 24th ult. we are now sending you two…

scan0067 From R. to EFC discussing the Dalby Watson indicator and a patentable method for obtaining an indicator diagram.
View original record R.R. 235B (200 T) (S.D. 408. 26-4-17.) Bm. 2/156/12. z X.3181 R10/W2.1.18. To EFC. from R. c. to BJ. X.3181 I have an old memo referring to the Dalby Watson indicator. I think this matter should not…

scan0068 Adaptation of a Dalby Watson indicator for Eagle and Mercedes Gotha engines.
View original record To R. from EFC. c. to BJ. X.3181 EFC1/T5.1.18. X.3181 - DALBY WATSON INDICATOR. X.2981 - INDICATOR DIAGRAM APPARATUS. In answer to your note R10/W2118, with reference to indicators, we received a…

scan0069 Letter to G. Cussons Ltd. regarding the adaptation of their optical indicator for the Eagle engine.
View original record X.3181 EFC4/T5118. 5th January 1918. Messrs. G. Cussons Ltd., Technical Works, Lower Broughton, Manchester. Dear Sirs, Re Optical Indicator. We have this morning a note from Mr. Royce enquiring re the…

scan0070 Suggesting a simpler scheme for an indicator to avoid the troubles found with the Dalby-Watson model.
View original record To EFC. from R. c. to BJ. X.3181 R3/W9.1.18. X.3181 - RE DALBY-WATSON & R.R. INDICATORS. X.2981 With reference to the Dalby-Watson and Rolls-Royce indicator, the scheme I suggested, if successful may…

scan0071 Telegram received by telephone arranging for a meeting at Derby train station.
View original record R.R. 144 (48 B.) (SC. 573. 25.2.16) E.P. 1269. ROLLS-ROYCE, Limited. X. 3181. TELEGRAM RECEIVED BY TELEPHONE. Time Received: 10-15 Date: 16/1/18 To: Derby By: ly from: Loughboro 9-15 [Stamped:…

scan0072 Procurement and fitting of a Dalby-Watson Optical Indicator to an Eagle engine.
View original record To Hy/Jn. X.3181 - DALBY-WATSON OPTICAL INDICATOR With reference to the above, we have now obtained Mr. Bailey's sanction to order up one of these from Messrs. G. Cussons and we are asking the O.O.c…

scan0073 Request to place an order for a Dalby-Watson Optical Indicator and its accessories.
View original record To Wd. from EFC EFC2/T18.1.18. X.3181 - DÅLBY-WATSON OPTICAL INDICATOR. Will you kindly pass an order to Messrs. G. Cussons, Ltd., the Technical Works, Lower Broughton, Manchester, for one…

scan0074 Instruction to obtain further particulars and a dimensioned drawing for a Dalby-Watson Optical Indicator.
View original record R.R. 300 (120 B) (SC. 576. 25.2.16) E.P. 1262. X. 3181 66864 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr. Clark (OC) Date: 26- 1- 1918 Order No. Customer's No. Re: Dalby-Watson Optical Indicator Will…

scan0075 Letter to Messrs. G. Cussons Ltd. requesting a drawing with dimensions for a Dalby-Watson Optical Indicator and its chain drive.
View original record X.3181 EFC2/AT28.1.18 28.1.18. Messrs.G. Cussons Ltd., Technical Works, Lower Broughton, Manchester. Dear Sirs, Re Dalby-Watson Optical Indicator. With reference to the rig for mounting your indicator…

scan0076 Confirmation of an order for a Dalby-Watson Optical Indicator, urging no delay.
View original record ut Wd. from EFC. EFC1/AT28.1.18. X.3181.-DALBY-WATSON OPTICAL INDICATOR. With reference to our note EFC2/T18.1.18 we would like confirmed that the order for the indicator of the above type has been…

scan0077 Letter to Messrs. G. Cusson Ltd. chasing the delivery of an outstanding order for a Dalby Watson Optical.
View original record X.3181. Wd/GEA3/W8218. 8th February 1918. Messrs. G. Cusson Ltd., The Technical Works, Lower Broughton, MANCHESTER. Dear Sirs, re Order BX.687 - 25/1/18. ----------------- We are most anxious to…

scan0078 Letter from G. Cussons Ltd. concerning a print showing an Optical Indicator rigged on an engine base.
View original record X. 318(. Enclosures Telephone: 6991 City, Manchester. Reference G. CUSSONS, Ltd., The Technical Works, LOWER BROUGHTON Wd/L MANCHESTER, :: LONDON OFFICE and SHOWROOM :: Thanet House - 231 Strand…

scan0079 Letter and blueprint from Messrs. Cussons for the Dalby-Watson Optical Indicator on the Eagle engine.
View original record R.R. 235B (200 T) (S.D. 408. 26-4-17.) Bm. 2/156/12. To JS/Jn. from EFC. EFC3/T9.2.18. X3181 - DALBY-WATSON OPTICAL INDICATOR Herewith please receive copy of a letter received from Messrs. Cussons,…

scan0080 Letter from G. Cussons, Ltd. regarding delivery timelines and priority certificates for war work.
View original record X.3181 COPY 10th Feb. 1918. Wd/GEA3/W8218. Re order BX.687. 25/1/18. Messrs. Rolls-Royce, Ltd., Nightingale Road, Derby. Dear Sirs, We are obliged by your letter of the 8th. and beg to say the…

scan0081 Dalby-Watson Optical Indicator, requesting information and instructions for the corresponding rig.
View original record To Srn. from EFC. EFC5/AT13.3.18 X.3181. - DALBY-WATSON OPTICAL INDICATOR. With reference to the above we shall be glad to be informed if you have everything you require for the detailing and…

scan0082 Organization of work for experimental test tackle and special devices.
View original record X.3181 To Smn. from EFC, c. to By. c. to Wor. EFC/AT6.4.18. X.3054. X.2981. X.3181. RE EXPTL: TEST TACKLE (SPECIAL DEVICES) At a meeting of officials, called together on Thursday last by Mr. Wormald,…

scan0083 The handover of an Eagle Engine job and Indicator Diagram Apparatus to Mr. Bailey's department.
View original record Contd. -2- EFC/AT6.4.18. just commenced, and therefore this job should be handed over to the Design D.O. which, in this case, will be to Mr. Bailey's Dept. being an Eagle Engine job. With reference to…

scan0084 Letter from G. Cussons, Ltd. explaining a delay in the delivery of an Optical Indicator due to production pressures.
View original record X.3181 F.190. The Technical Works, Lower Broughton, Manchester. 13th May 1918. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. Order EX.687(25.1.18). Dear Sirs, We beg to acknowledge your letter of…

scan0085 Order for a specific S7 Ball Bearing from Messrs Hoffmann for a Dalby-Watson Optical Indicator Apparatus.
View original record R.R. 235 B (200 T) (S.E. 52T. 21-2-8; G. 2129) To Mr Hille from BY/HBO. c. to Mr Coverley. c. to FPC. BY/HBO1/DB7618. June 7th, 1918. Re Dalby-Watson Optical Indicator Apparatus. X.3190. Kindly order…

scan0086 Request to produce one set of parts for the Dalby Watson Indicator from a list of drawings.
View original record R.R. 28a B (200 T) (S.E. 527. 21-2-18) G. 2129. To. O.C. from BY/HBO. c. to Mr. Coverley. c. to E.F.C. BY/C3/GK15618. 14th. June 1918. RE - DALBY WATSON INDICATOR. X.318Φ. Kindly issue instructions…

scan0087 To Mr. Clarke regarding a delivery delay for a Dalby Watson Optical Indicator from Messrs G Cusson Ltd.
View original record Mr. Clarke (Experimental Dept) ---------------------------- X. 3181 Wd/GEA7/DK17618. 17th June. 1918. With reference to the Dalby Watson Optical Indicator ordered from Messrs G Cusson Ltd., of…

scan0088 Letter from G. Cussons, Ltd. regarding the delayed delivery of an Optical Indicator due to resources being diverted to aircraft work.
View original record COPY FROM:- Messrs G.Cussons, Ltd., The Technical Works, Lower Broughton, MANCHESTER. TO:- Messrs Rolls-Royce Ltd., Nightingale Road, D E R B Y. Dear Sirs, We beg to acknowledge receipt of your letter…

scan0089 To Mr. Clark in the Experimental Department chasing the delivery of a Dalby-Watson Optical Indicator.
View original record X3181 Mr.Clark (Experimental Dept.D.O.) Wd/GEA38/DK3718. 3rd July. 1918. Will you please be good enough to reply to our memo of the 17th ult., asking if you wish us to [assist - struck through,…

scan0090 Acquisition of a Dalby-Watson Optical Indicator from Messrs. Gussons.
View original record Wd/GEA. from EFC. EFC2/AT4.7.13 X.3181.-DALBY-WATSON OPTICAL INDICATOR. In answer to your note Wd/GEA7/DK17618 and to your further note Wd/GEA3/DK3718 we consider we should make any reasonable demands…

scan0091 Notification regarding the receipt of various ball bearings for Dalby Watson Indicators.
View original record R.R. 235 B (200 T) (S E. 527. 21-2-18 G. .129 X.3181. Dalby Watson Indicator By/Mr. Clark. Wd/W14/H8718. 8th July 1918. Please note we have received the following parts and same may be had on…

scan0092 Two photographs of a piece of machinery, one showing it disassembled and the other assembled.
View original record X2101 2221

scan0093 Diagrams from a Dalby-Watson Optical Indicator.
View original record X.3181 - RE DALBY-WATSON OPTICAL INDICATOR. DIAGRAMS. 12 9-14. 200 150 100 50 0 lbs/sq.inch.

scan0094 Article from 'The Mechanical Engineer' journal detailing an optical indicator for steam and gas engines.
View original record MARCH 13, 1914] THE MECHANICAL ENGINEER. 235 OPTICAL INDICATOR FOR STEAM AND GAS ENGINES. The apparatus shown in the accompanying cuts has been designed and patented by Prof. W. E. Dalby, of the City…

scan0095 Confirmation of a telegram inquiring about the Dalby Watson Indicator.
View original record CONFIRMATION OF TELEGRAM. 10th September, 1918. FHR. ROYCAR- DERBY. X 3/81 CLARK HAVE WE A DALBY WATSON INDICATOR ON ORDER AS WELL AS THE INDICATOR APPARATUS SUGGESTED BY ME KINDLY SEND US NAME AND…

scan0096 Urgent request for tracings of blueprints for a Dalby Watson Optical Indicator for Mr. Royce.
View original record To Tracing Office. from EFC EFC1/T11.9.18. X.3181 - DALBY WATSON OPTICAL INDICATOR Will you kindly supply tracings of the blueprints herewith, and oblige Experimental Dept. D.O. Will you kindly note…

scan0097 Letter regarding the delayed delivery of a Dalby Watson Optical Indicator from Messrs. G. Cussons, Ltd. due to urgent war work.
View original record R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. To R. from EFC. c. to CJ. EFC2/T11.8.19. 11th Sept. 1918. X.3181 - DALBY WATSON OPTICAL INDICATOR In answer to your telegram, we have a Dalby…

scan0098 Photographs and diagrams of a Dalby Watson Optical Indicator.
View original record To R. from EFC. c. to CJ. EFC5/T13.9.18. X.3181 - DALBY WATSON OPTICAL INDICATOR Herewith please receive photographs of Dalby Watson Optical Indicator, together with a photostat copy of indicator…

scan0099 Request for two blueprints of tracings for the Dalby Watson Optical Indicator.
View original record To Mr. Walker. from EFC. EFC2/T18.9.18. X.3181 - RE DALBY WATSON OPTICAL INDICATOR Will you kindly supply two blue prints off each of the accompanying tracings, X.R.67/8 and oblige Experimental Dept.…

scan0100 Blueprints for the Dalby Watson Optical Indicator for use on aero engines.
View original record To R. from EFC. c. to CJ. EFC1/T21.9.18. X. 3181 - DALBY WATSON OPTICAL INDICATOR Herewith please receive blueprints of Arrgt. . Drawings K.R.67/8 of Dalby Watson Optical Indicator on R.R. Aero…

scan0101 Difficulties encountered with the Daley-Watson Indicator and potential solutions.
View original record R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. To EFC. from R. c. to CJ. 21st. Septembr, 1918. R2/G21918. X.3181 - RE DALEY-WATSON INDICATOR The difficulties I remember of the Watsom Indicator…

scan0102 Modifying a 'Falcon' engine and sharing information with U.S. aero experts.
View original record R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -2- E2/G21918. Contd. that one of our "Falcon" could be rigged up to give very high compression and very high revolutions. R. Can we send on the…

scan0103 Forwarding of illustrations for the Dalby Watson Optical Indicator and an inquiry about its difficulties.
View original record To R. from EFC. c. to CJ. EFC4/T24.9.18. X 3181 - DALBY WATSON OPTICAL INDICATOR We have photostat copies of the photographs and copies of everything else we sent to you in connection with the above…

scan0104 Letter to G. Cussons Ltd regarding difficulties with the Dalby Watson Optical Indicator.
View original record Y/3181 EPC3/T24918. 24th Sept. 1918. Messrs. G. Cussons, Ltd., Technical Works, Lower Broughton, Manchester. Dear Sirs, Re Dalby Watson Optical Indicator. We have the impression that the Dalby Watson…

scan0105 Imperfections of the Dalby-Watson Indicator and a response from Messrs. Cussons.
View original record R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. To R. from EFC. c. to CJ. EFC1/L15.10.18. X.3131.-DALBY-WATSON INDICATOR. Referring to your note R2/G2118, we now attach a copy of a letter we have…

scan0106 Follow-up letter from The Cambridge and Paul Instrument Company regarding a quotation for a Collins Micro-Indicator.
View original record TELEGRAMS: UNIPivot, SOWEST, LONDON. Codes: A.B.C. (5th AND 6th EDITIONS); WESTERN UNION; BENTLEY'S. TELEPHONE: VICTORIA 7640 (2 LINES). X.3181 THE CAMBRIDGE AND PAUL INSTRUMENT COMPANY, LIMITED.…

scan0107 Reprint from 'ENGINEERING' magazine describing the Collins Micro-Indicator for high-speed engines.
View original record X. 3181 Reprinted from “ENGINEERING,” June 9, 1922. THE COLLINS MICRO-INDICATOR FOR HIGH-SPEED ENGINES. Constructed by THE CAMBRIDGE AND PAUL INSTRUMENT COMPANY, LIMITED, 45, GROSVENOR PLACE, LONDON,…

scan0108 Extract regarding a change to the speedometer drive on the American model.
View original record X.3685. Extract from R6/G27.9.19. RE AMERICAN MODEL SPEEDOMETER DRIVE. Change to other side of chassis.

scan0109 The decision to continue right-hand chassis production for America and halt the proposed left-hand drive version.
View original record X.3685 To Wor. from Bn. Copy to Bl. Da. BY. Hs. CK. X.3614. X.3548. Bn9/W31.10.19. RE AMERICAN CHASSIS. Mr. Johnson telephoned this afternoon that he has received a cable from Mr. Olley stating that…

scan0110 Requesting two blueprints for a drawing of a speedometer drive for a 3/19 gear box.
View original record To BA. from E. Copy to CD. " " BN. " " EH. " " EFC. X.3720 X.3685✓ EL/G18/11/19. RE SPEEDOMETER DRIVE FOR 3/19 GEAR BOX. Herewith please receive drawing No. LeC.1158 shewing the above. Would you…

scan0111 Note on experimental numbers taken out for the American Model Chassis.
View original record X.3685 DA/STT. EFC/ AT1/S19.11.19. X.3614. - RE AMERICAN MODEL CHASSIS. Will you kindly note the following experimental numbers have been taken out for the above chassis. X.3685. Speedometer drive.…

scan0112 Modifications to the speedometer drive and reduction gear for the 3/19 gearbox.
View original record R.R. 235 A (100 T) (S.P. 575. 16-4-19) G. 2354. To DA. from E. Copy to CJ. " " BN. " " EH. " " EFC. RE SPEEDOMETER DRIVE - 3/19 GEAR BOX. X.3685. Referring to drawing No. Lec.1158 sent to you on the…

scan0113 Continued document specifying speedometer drive adjustment tolerances and gear shaft lubrication methods.
View original record Contd. -2- E3/G19.11.19. us a maximum error of 1% in adjusting the drive of the speedo-meter. Since 1% is only half a mile in fifty, it is considered near enough when the fact is taken into account…

scan0114 Providing a status update on experiments related to pistons, starter gear, hand brake, and speedometer drive.
View original record X.3665 To EFC/Mrs. Tweddell from Da/Stt. Da/Stt3/CMO.6.20. ------------------------------------------------------- The following is the position of experiments about which you have been inquiring:-…

scan0115 Extract discussing a revised design for a geared speedometer drive.
View original record X.3685 Extract from CY1/G3.6.21. X.3764 (13) GEARED SPEEDOMETER DRIVE. This is being fitted on a few cars. We are obtaining a revised design however with Norma magneto type ball bearings in place of…

scan0116 New geared speedometer drive from Springfield as a replacement for the existing belt drive.
View original record To R. from Hs. c. to CJ. c. to EN. c. to K. c. to Ds. c. to HY. c. to EP. c. to EWT.for R.R.Inc. X 3685 X.3764 X.3685 PARTS FITTED TO 4.EX CAR. X.1809 2 Speedometer Drive. Springfield have fitted a…

scan0117 From Hs. to E. listing items despatched to W.W.
View original record To E. from Hs. X3685 _z_ Hs4/LGl.7.21. X4197 X3579 X3685 X3898 We have despatched to W.W. today the following items:- 1. Tyre Pump connection for 6.EX Car. 2. Auto-vac. The Auto-vac is one which we…

scan0118 The reduction of studs, washers, and springs on the 40/50 chassis spring drive from 20 to 10.
View original record To BFC. from BY/Shn. C. to Hs. C. to Dep. C. to Mr. For Mr Saunders. C. to Mr Clarke (Inspection Dept.) X3271 BY/Shn4/ML5.11.20. RE 40/50 CHASSIS - SPRING DRIVE. Under alteration No. 4650/E dated…

scan0119 Reduction of end play tolerance in the spring drive for the 40/50 Chassis to improve engine quietness.
View original record Handwritten: V3271 BY (Strikethrough) c. SFT. (Strikethrough) c. Hs. EP10/H27.3.24. re. 40/50 Chassis. End Play in Spring Drive. We have for some time found that it is of considerable importance to…

scan0120 Page 2 of a document discussing play in spring drives and the use of thicker collars.
View original record - 2 - EP10/H27.3.24. play of the spring drives which are in excess of the above ( we do not anticipate there are more than half a dozen) and also have some bushes made with rather thicker collars for…

scan0121 Requesting detail drawings for the 20 HP Damped Spring Drive.
View original record X4222 E2/G3.7.19. To Da. from E. v. to CJ. c. to BN. c. to EH. c. to EFC. RE 20 H.P. DAMPED SPRING DRIVE. X.3575, We send you herewith drawing No. 1eC.1090 shewing the above. Would you kindly put the…

scan0122 Print for a 20 HP Damped Spring Drive.
View original record To Mr. Coverley from EFC. EFC9/T23.7.19. X.3575 - 20 H.P. DAMPED SPRING DRIVE. Herewith please receive print of LeC.1090 in connection with the above. EFC.

scan0123 Receipt of bronze, circlips, and springs from suppliers.
View original record R.R. 235 B (50 T) (F.F. 846. 6-8-19) G. 2461 X.3575 Mr Clark. from O.O. Wd/Dnl/HP14420. 14th April.1920 X.3563. Please note we have received from Messrs. T. Bolton & Sons., 1, 5 ft. bar of .375 dia…

scan0124 Parts fitted to a Goshawk engine for testing.
View original record To EFC. from RHC. z c. to Hs. 12575 Hs4/LG20.9.20. X.3481. RE "GOSHAWK" ENGINE. The above engine has been placed on test and has been fitted with the following parts. X.3624. - Water Pump. X.3310. -…

scan0125 Design of the Goshawk Spring Drive & Damping Flywheel, specifically the flywheel stud locking mechanism and the starting dog washer material.
View original record R.R. 235a (100 T) (S.H. 798. 10-12-20) Ch.2948 MAR 15 1921 RECEIVED Hs. from BY X.3575 X.3525 X.3575 BY7-P15.3.21. GOSHAWK. SPRING DRIVE & DAMPING FLYWHEEL. Referring to the Flywheel Stud E.50018, and…

scan0126 Requesting the production of two sets of a 1-G-1 spring drive to be fitted to G.11, noting it as a high priority job.
View original record X4222. G.1. To RHC. from Hs/Rm. Hs/Rm5/LG27.5.27. Herewith details of a 1-G-1 spring drive to be fitted to G.11. We consider this job to be the most important of any on car work at the moment. We…

scan0127 The difficulty of removing the spring drive from the crankshaft, with a suggested modification to the nut.
View original record X.4222. Extract from Hs4/LG2. 9.21. SPRING DRIVE. X.4222. We find that it is impossible to remove the spring drive from the crankshaft when the engine is in position in the frame. It would appear that…

scan0128 Modifications to the Goshawk 11 crankshaft spring drive unit to address periodic torsional effects.
View original record To Hs. from E. c. to CJ. c. to Wor. c. to BY. c. to Da. X 4222 COPY E1/G13.9.21. X.4221 - RE. GOSHAWK 11, CRANKSHAFT. X4222 Referring to Goshawk 11, crankshaft, the front end of the crankshaft which…

scan0129 Request for a torsional load test on a Goshawk 11 crankshaft and details on its spring drives.
View original record Hs. from E. c. to CJ. c. to Wor. c. to BY. X4222 E5/G16.9.21. X.4222 - RE GOSHAWK 11. CRANKSHAFT. X.4221. Would you kindly note Mr. Royce would like you to load up the Goshawk 11. crankshaft…

scan0130 Drawings for a new large type crankshaft pinion spring drive for the Goshawk 11 engine.
View original record To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. X.4222 - RE GOSHAWK 11. CRANKSHAFT SPRING DRIVE. X.4221 We send you herewith drawings LeC.1449 and LeC.1450 shewing the design of the new large…

scan0131 Spring drive tests for the Goshawk engine, recommending a separate friction flywheel to overcome crankshaft periods.
View original record Extract from Hs5/LG23.9.21. X.4222. SPRING DRIVE. X.4222. We have carried out a number of further tests with the spring drive on the Goshawk but we have not been successful in being able to overcome…

scan0132 Drawing LeC.1458 for the Goshawk 11 spring drive, slipper flywheel, and temporary wheelcase.
View original record X4222 To Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to BY. E2/G5.10.21. X.4244 - RE GOSHAWK 11. SPRING DRIVE ETC. X.4222 We send you herewith drawing LeC.1458 shewing the spring drive and separate…

scan0133 Goshawk 11 crankshaft pinion spring drive and slipper flywheel, detailing wheelcase alterations.
View original record To Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to BY. X4222 E1ØG6.10.21. X.4244 - RE GOSHAWK 11 CRANKSHAFT PINION SPRING DRIVE X.4222 AND SLIPPER FLYWHEEL. With reference to the scheme LeC.1458 sent…

scan0134 The Goshawk 11 crankshaft pinion spring drive, stating that work on Spring Drive LeC.1449 should cease as it is superseded by scheme LeC.1458 with a slipper flywheel.
View original record To BY. from E. c. to Hs. X4222 E1/G8.10.21. GOSHAWK 11. CRANKSHAFT PINION SPRING DRIVE. X.4222 X.4221 It should be understood that nothing more should be done with Spring Drive LeC.1449 now that we…

scan0135 The Goshawk 11 undershield and a half-time wheelcase.
View original record X4222 To BY. from R. c. to CJ. c. to Wor. c. to Hs. c. to Ds. R9/G12.10.21. X.3317 X.4272 X.4233 - RE GOSHAWK 11. X.4222 X.4244 With reference to the undershield for the engine, Mr. Stent is at…

scan0136 Technical drawing of a Slipper Flywheel (Front Half).
View original record R.R. 890(SH)(SJ. 185. C.S. 21.) .450 .250 .050" CHAMFER AT 45° 8 COUNTERBORES THUS. ENLARGED VIEW OF DOVETAIL. SCALE 3/1 THIS FACE TO BE A FINE FINISH & TRULY SQUARE WITH BORE. 8 HOLES EQUALLY SPACED…

scan0137 Investigation into the cause of Goshawk II engine gear rattles due to slack in the spring drive.
View original record To R. from Hs. c. to CJ. c. to E. c. to Ds. c. to HY. X4222 Hs1/LG16.9.22. GOSHAWK II. ENGINE GEAR RATTLES. X4247 (crossed out) X4222 We have found that the cause of the dynamo rattles has been due to…

scan0138 Continued note regarding the Drawing Office's agreement to make a plate of a specific shape for the Goshawk-ll.
View original record Contd:- -2- Goshawk-ll. The D.O. have agreed that the plate can be made ⟂ shape with little alteration to existing parts. Hs.

scan0139 Potential improvements to valves and spring drives for Goshawk engines.
View original record /4222 To BY & HS. from R. c.c. to WJ. BJ. c.c. to Wor. EP. R1/M18.12.22. RE. GOSHAWKS. X.4226 X.4222 X.4221 X.3551. (1) RE VALVES X.4226 With heavy bodies I fear we are asking for a lot of HP. for a…

scan0140 Design decisions regarding half-time gears, the magneto, and the exhaust valve.
View original record contd:- -2- In regard to the half time gears we are hoping that with a special oil jet upon the crankshaft pinion (and possibly with fan added) the half time unit drive will permit no slack embodying…

scan0141 Telegram from R. Royce regarding Goshawk spring drives and valve design modifications.
View original record y4222 18.12.22. COPY OF TELEGRAM FROM R. X.4226 X.4222 BAILEY GOSHAWK ONLY PRODUCES SPRING DRIVES SUFFICIENT TO PREVENT DELAYS IN DELIVERY STOP SENDING MODIFIED DESIGN IN FEW DAYS STOP SEE HIVES…

scan0142 Typed letter quoting a wire from Mr. Royce about design modifications to the Goshawk engine's spring drives and valves.
View original record X4222 Wor. c. Hs. BY2-P19.12.22. X4226 X4222 I have received the following wire from Mr Royce:- "BAILEY GOSHAWK ONLY PRODUCE SPRING DRIVES SUFFICIENT TO PREVENT DELAYS IN DELIVERY stop SENDING…

scan0143 Halting the current Goshawk Spring Drive design in favour of a superior new one being sent out shortly.
View original record X.4222. To BY. from R. c. to CJ. BJ. Wor. c. to Hs. EP. R3/M27.12.22. RE. GOSHAWK SPRING DRIVE X.4222. We have seen sufficient of the possibilities to promise you in the course of a few days the new…

scan0144 Improved spring drive for the Goshawk 11 engine, including drawing No.LeC.1665.
View original record To BY. from E. c. to CJ. Wor. c. to HS. EP. X4222 E1/M30.12.22. GOSHAWK 11. IMPROVED SPRING DRIVE. X.4222 X.4221. In accordance with Mr. Royce's recent memo. we send you herewith drawing No.LeC.1665…

scan0145 Continued report on the design of driving and damping springs for a flywheel and camshaft gear-wheel assembly.
View original record contd:- -2- the correct meshing of the teeth at the moment of engagement by looking down in between the flywheel and the camshaft gear-wheel. The driving springs in this design are working at a…

scan0146 Driving and damping springs for the revised Goshawk 11 spring drive, referencing drawing No.LeC.1666.
View original record X.4222. To BY. from E. c. to CJ. c. to Hs. E2/M6.1.23. GOSHAWK 11. SPRING DRIVE X.4222. We send herewith drawing No.LeC.1666 shewing driving and damping springs for the revised Goshawk 11. Spring…

scan0147 Query regarding the load specification for the Goshawk II slipper flywheel spring loading.
View original record To Hs. [REDACTED] X4222 BY/Shn9/DB.18.1.23. RE "GOSHAWK II" - SPRING DRIVE - SEC:5020. SLIPPER FLYWHEEL SPRING LOADING. With reference to the following note from the Spring Drive Arrangement drawing…

scan0148 Suggestion to permanently rivet together half fan pulley rim pressings for a spring drive before trimming the groove.
View original record To Hs. X4222 BY/Shn4/DB.14.2.23. RECEIVED FEB 1923 X.4222 - SPRING DRIVE. (NOW SERRATED). With reference to the half Fan Pulley Rim pressings E.52475, we suggest these should be permenently rivetted…

scan0149 Agreeing to the practice of riveting Pulley Rim Pressings before turning for the Goshawk Spring Drive.
View original record V4222 To By/Shn. from RHC. RHC2/T 15.2.23. X.4222 - SPRING DRIVE - GOSHAWK With reference to your note By/Shn4/DB14.2.23. we agree that the Pulley Rim Pressings should be riveted before turning, in…

scan0150 Recommending the immediate adoption and standardisation of a new, superior design for the Goshawk Damped Spring Drive.
View original record X.4222 To BY. from R. c. to CJ. BJ. c. to Wor. PN. c. to HS. Da. c. to E. EP. R6/M26.4.23. GOSHAWK DAMPED SPRING DRIVE. X.4222. This third design is so manifestly superior, that it should be adopted…

scan0151 Friction damping plate working loose on the latest type spring drive for the 20 HP engine, with a suggested fix.
View original record z X4222 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hs13/LG10.5.23. 20 HP. LATEST TYPE SPRING DRIVE. X4222 We have found that on the two engines we have w been running this latest type…

scan0152 Revised design for the Goshawk 11 spring drive to overcome issues found during testing.
View original record To BY. from E. c. to CJ. c. to Hs. c. to EP. X4222 E3/M2.6.23. GOSHAWK 11. SPRING DRIVE X.4222. We send herewith drawing LeC.1727. shewing the above revised with a view to overcoming the troubles…

scan0153 Modifications to a crankshaft spring drive, including assembly instructions and associated changes to damper springs and a cooling fan.
View original record -2- not effectively interfere with the interchangeability of the crankshaft. This spring drive has to be removed in two pieces if it be desired to detach it from the engine when the latter is in…

scan0154 Instruction to increase the number of spring spigots on slipper flywheels for the Goshawk II from 8 to 16.
View original record c. to Hs. X.4222 BY/Shn1/DB.2.6.23. RE "GOSHAWK II" - SPRING DRIVE - SEC:5020. Please arrange to increase the number of Spring Spigots on the Slipper Flywheels E.51663/4, from 8 to 16. Mr Hives agrees…

scan0155 Request to produce test sets of slipper flywheel springs for the 'Goshawk II' engine from existing stock due to a delay.
View original record [strikethrough]To Dft.[/strikethrough] c. to Hs. X4222 BY/Shn4/DB.11.6.23. -------------------------------- X.4222 - "GOSHAWK II" - SPRING DRIVE - SLIPPER FLYWHEEL SPRINGS.…

scan0156 Slipper flywheel clearances for the 20 HP chassis spring drive, covering both serrated and non-serrated types.
View original record To Sft. c. to PU. c. to HS. c. to Office for Mr. Cox. y4222 BY/Shn6/DB.19.6.23. y4222 X 4221 RE 20 HP CHASSIS - SPRING DRIVE.(SERRATED TYPE) E.51055. SLIPPER FLYWHEEL CLEARANCES. Regarding the…

scan0157 Standardisation document for an improved spring drive on chassis parts.
View original record STANDARDISATION of CHASSIS PARTS. COMPLETED 10.7.23 Description of Parts: IMPROVED SPRING DRIVE. Origin: Improved design. Experimental Test Report: The chief advantage in the improved design is that…

scan0158 Slight revision to the Goshawk 11 fan pulley and spring drive.
View original record To BY. from E. c. to CJ. c. to Hs. X4222 E2/M16.8.23. GOSHAWK 11. - FAN PULLEY AND DRIVE X.4222 FOR SPRING DRIVE - Lec.1727. X.4237 We send you herewith drawing No.Lec.1749., shewing the above. This…

scan0159 Note detailing the specifications for a standard and an experimental spring for a 20HP spring drive.
View original record Hs. re 20HP Spring drive The spring we have tried temporarily in place of standard, are standard springs E52491 drawn out .05" i.e. Std. spring .75" free - 6 1/2 coils - 15G wire - 14 3/8 lbs at .625"…

scan0160 Fault with the 20-HP engine spring drive causing noises due to springs binding against back plates.
View original record SFT. c. EY. c. Wor. c. Hs. X4222 EP3/H23.1.24. 20-HP. Engine Spring Drive Fault. With reference to my conversation with you yesterday, we have for some time been troubled with engine noises etc.…

scan0161 Alteration to a Bakelite washer thickness for the 20 HP Chassis Spring Drive.
View original record c. to Hs. +4222+ BY/SS/DB.25.4.24. RE 20 HP CHASSIS - SPRING DRIVE - SEC:5020. Alteration No.8678/E to F.53266 - Continental Bakelite Washer modifies the thickness from .050±7 to .062±7 to suit…

scan0162 Change in damping springs for a 20 HP Chassis Spring Drive.
View original record c. to HS. 44222 BY/SS1/DB.29.4.24. RE 20 HP CHASSIS - SPRING DRIVE - SEC:5020. DAMPING SPRINGS. With reference to your conversation with Mr Bailey regarding a 25% reduction in the Damping Load as…

scan0163 Testing and standardising the 20 HP spring drive damping springs.
View original record /4222 To EP. from Hs. c. to BY. c. to Sft. Hs14/LG27.5.24. RE. 20 HP. SPRING DRIVE - DAMPING SPRINGS. We have tried out a set of Springs E.14670 (with handwritten annotation '53208' above) referred to…

scan0164 From Mr. Royce regarding experiments on road springs.
View original record ROAD SPRINGS. Written by Mr Royce on March 5th 1912. Handed to T.C. on March 8th. Mr Royce said - It may be possible to work with less spring movement owing to the increase in length of the springs…

scan0165 Mr. Royce's instructions on calculating loads for rear springs.
View original record REAR SPRINGS. Written by Mr Royce on March 5th 1912. Handed to T.C. on March 8th. Mr Royce said - In calculating road springs the loads should be considered as follows:- Minimum load - Chauffeur and…

scan0166 Requesting characteristic curves for rear springs and discussing variations in their design and friction.
View original record COPY R10/P 31.10.13. To Da. from R. Copy to J. Copy to Wor. X910 COPY. Re Rear Springs. With reference to the springs fitted to the rear of our cars, I should like the characteristic curve of these…

scan0167 Instructions from Mr Royce to test the rating and behaviour of rear springs across their full range of action.
View original record R.R. 300 (6 B) (XX. 368. 9.9.13) E.P. 4920. ROLLS-ROYCE LIMITED. INSTRUCTIONS. 15023 To: O.O for Works Order No.: C & S Dept / 411/13 Re: REAR SPRINGS 4 hor. 1913 Customer's No.: X910 Please note that…

scan0168 Tests of standard and special rear springs, giving load per inch of deflection.
View original record From Exp. Dept. Copies for: J. R. Ha. Da. Wor/Hyll/L101113. November 10th. 1913. Tests of Standard and special Rear Springs giving load per inch of deflection. X.910. Two springs were tested, one…

scan0169 Deflection of rear springs, attaching a report with figures to plot a characteristic curve.
View original record Wor/SM15/L101113. Re Deflection of Rear Springs. X.910 J. 18-11-13. R. Da. Na. In reply to Mr Royce's memo R10/F311013, we attach herewith Mr Haldenby's report containing the necessary figures to…

scan0170 Instructions regarding the characteristic curve of rear road springs and their potential shock-damping effect.
View original record R.R. 300 (6 B) (XX. 368. 9.9.13) E.P. 4920. 15124 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 13 Rod / 1913 To: Mr Royce Order No. Customer's No. Re: X910 CHARACTERISTIC CURVE OF REAR ROAD SPRINGS Herewith I…

scan0171 Proposal for testing different spring combinations following unsatisfactory results with thin top plates and rolled eyes.
View original record COPY. X910 COPY. To Wor. for Hy. Copy to Na. Copy to J. Copy to Da. Dec. 22nd, 1913. We are not interested in the thin top plates of the top spring, as we have come to the conclusion that all of these…

scan0172 Design and testing of experimental front springs.
View original record R.R. 235A (150 H) (V.V. 303. 5.1.14) G. 0255. COPY. R4/P 21. 4. 14. To Da. from R. Copy to J. Copy to Na. Copy to Wor. FRONT SPRINGS. We hope you are making some progress with the experimental front…

scan0173 Instruction sheet requesting an experiment to determine the Modulus of Elasticity (E) for road springs, including experimental results.
View original record R.R. 300 (6B) (XX, 847. 29.5.13) E.P. 4342. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: O.C. Copy & Parker 84/U Order No. Customer's No. Re. Modulus of Elasticity (E) for road springs. In connection with…

scan0174 The modulus of elasticity of road springs, with tabulated test data for two different blades.
View original record Wor/Mcr1/L18414. Re Modulus of elasticity of Road Springs. Da. 18-4-14. Na.c. The following is Mr Purdon's report in response to your instruction sheet 12106 of 7/4/14. [Stamp: SECOND COPY OXLEY] *…

scan0175 Life of springs during bumping tests.
View original record X/332 Wor/Mcr7/L1514. May 1st.1914. LIFE OF PARTS ON BUMPING TESTS. S P R I N G S. 3" Humps at 105 revs. per minute. Piece No. | Description. | Time Hrs. Mins. | Results. | Reference. F.812 | Front…

scan0176 Test log sheet detailing results of spring testing, including failure times and modes.
View original record Wor/Mcr7/L1514. Sheet. 2 SPRINGS. Piece No. | Description. | Time Hrs. Mins. | Results. | Reference. F.812 | Front Spring, near side. | 33 | Broke. | Wor/Hy3/L271113. " | ditto. | 25 | " | " " |…

scan0177 Test results and failure log sheet for front springs, piece number F.812.
View original record Wor/Mer7/L1514. Sheet. 3 SPRINGS Piece No. | Description | Time Hrs. Mins. | Results | Reference. ---|---|---|---|--- F.812 | Front Spring, near side. | 37 | Broke top plate front end. |…

scan0178 Log sheet detailing the results of tests on front springs, including failure modes and duration.
View original record Wor/Mcr7/L1514. Sheet. 4 SPRINGS. Piece No. Description Time Hrs. Mins. Results Reference. F.812 Front Spring, near side. 1 - 4 Broke top plate. Wor/Hy27/L61113. " ditto. 50 Broke. Wor/Hy5/L201113. "…

scan0179 Test results log for front springs, detailing failure times and types.
View original record Wor/Wcr7/L1514. Sheet. 5 SPRINGS. Piece No. | Description. | Time Hrs. Mins. | Results. | Reference. F.812 | Front Spring, near side. | 1 - 30 | Broke front end. | Wor/Hy23/M111213. " | Front Spring,…

scan0180 Test log documenting the failure points and lifespan of various springs.
View original record Wor/Mcr7/L1514. Sheet. 6 SPRINGS. Piece No. Description. Time Hrs. Mins Results Reference F.812 Front Spring. off side. 3 - 36 Broke top plate front end. Wor/Hy19/L221013 " ditto. 44 Broke front end…

scan0181 Potential reversion to a pre-war type of chassis rear spring and how to approach the supplier, Messrs Woodheads.
View original record R.R. 235 a (100 T) (S F. 846. 6-8-19) G. 2460 X 1332 BY10/H. 21. 4. 20. Wd. c. Hs. c. Da. X2628 CHASSIS - REAR SPRINGS. X1332 Hs. confirms that Mr.Royce appears to be inclined to revert to the pre-War…

scan0182 Cablegram concerning the specifications and supply of rear and front springs for American models.
View original record X 1332 CABLE. Hs 6.11.20. RECEIVED NOV 3 1920 ROLLS ROYCE. SPRINGFIELD. MASS. X3614 X 1332 RE REAR SPRINGS R AND CJ AGREE IMMEDIATELY REVERT TO PREWAR OFF SET ROLLED EYE SPRING F FOURTYSIX FIFTYSIX…

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