Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 44\1\        Box Selection

IdentifierEntry
Scan001 Confirming the dispatch of an Ideal Double Filter and Filler from Wallis, Sutton & Wilson of Birmingham.
View original record HS. To Rn. from CJ. X2946 Y4037 CJ/JS16/D18.2.20. I am sending you herewith Ideal Double Filter and Filler received from Wallis, Sutton & Wilson of Birmingham. CJ. Enc: Double Filter & Filler. [Stamp]…

Scan002 Letter from Cox Carburetters Limited regarding their ATMOS Patent Filter.
View original record TELEPHONE: MIDLAND 2012 MANUFACTURERS OF THE COX atmos CARBURETTER TELEGRAMS: 'ATCARBCO' Y4037 COX CARBURETTERS LIMITED ERA/FA. LOWER ESSEX STREET BIRMINGHAM Messrs. Rolls Royce Co., Ltd., DERBY. MAY…

Scan003 Instruction leaflet for the Cox 'Atmos' Separator Filter, with handwritten notes.
View original record Left Page: THE SEPARATOR FILTER REQUIRES A LITTLE ATTENTION. No water can possibly pass through filter unless such quantity has accumulated in lower chamber E as shall reach level marked F. Therefore,…

Scan004 Installation and operation instructions for a Cox 'Atmos' separator filter.
View original record COX "ATMOS" SEPARATOR FILTER. HOW TO FIX. WITH GRAVITY FEED. Filter should be fixed in such position as to bring outlet B just below bottom of main fuel tank. Attach pipe from main tank to union…

Scan005 Requesting a report on the test of a 'Universal' petrol filter sent by the Walter Scott Co.
View original record Spec. COPY. 44037. To Hs. from DA/Stt. Da/Sttl/CB16.6.20. We should be pleased to learn how the test of the "Universal" petrol filter, sent us by the Walter Scott Co, of Finchley Road - London - Feb…

Scan006 Sales letter from Walter Fricke in Berlin offering the 'Filtrator' dust-removing apparatus for explosion motors.
View original record X3701 Y4037 FILTRATOR WALTER FRICKE B E R L I N W. 30. POSTSCHECK-KONTO; BERLIN No 5 4 6 8 2 TEL.ADR.FILTRATOR BERLIN A B C CODE 5TH EDITION BANK-KONTO; DEUTSCHE BANK DEP.KASSE ST.BERLIN W.30…

Scan007 Technical advertisement for the 'Filtrator' air filter by Walter Fricke of Berlin.
View original record WALTER FRICKE ⚙ BERLIN W 30 DER »FILTRATOR« Während man die äußerst schädliche Wirkung des Straßenstaubes auf die menschliche Lunge bereits frühzeitig erkannt hat und hygienische Maßnahmen aller Art…

Scan008 Advertisement in German for an automotive filter called 'FILTRATOR'.
View original record Fahre staubfrei mit FILTRATOR 3 D. R. P. a. 3 D. R. G. M. <<<--- Zum Vergaser --->>> Saugleitung Sie filtrieren den Betriebstoff! Sie filtrieren das Schmieröl! Filtrieren Sie auch die staubige Luft,…

Scan009 German promotional document for the 'Filtrator' engine air filter, including a price and specifications table.
View original record DER FILTRATOR Der Filtrator ist das langgesuchte, einfache Hilfsmittel, welches dem Motor auch auf staubigster Landstraße völlig reine Verbrennungsluft zuführt. Der Filtrator besteht aus einem…

Scan010 Terms of delivery for a product named 'Filtrator' from Walter Fricke, Berlin.
View original record FILTRATOR LIEFERUNGS-BEDINGUNGEN Alle Preise verstehen sich freibleibend, rein netto, sofortige Kasse, ab Fabrik Berlin exklusive Verpackung. Alle Steuern und Ausfuhrabgaben gehen zu Lasten des…

Scan011 Sales letter from C.P. Preston Company offering a Giusti Gauseless Filter & Separator for testing purposes.
View original record MOTOR EXHIBITION OLYMPIA & WHITE CITY NOV 5-13 OUR STAND IS NUMBER 362 WHITE CITY Telephone No: Holborn 983. Telegraphic & Cable Address: 'Prestico, Westcent London.' x4037 THE C.P. PRESTON COMPANY,…

Scan012 Continuation sheet of a letter from The C. P. Preston Company to J. Wormald.
View original record THE C. P. PRESTON COMPANY, Ltd.—Continuation Sheet. J. Wormald, Esq.........2. If there are any other points which you would like us to write you on, we shall be glad to hear further from you. Yours…

Scan013 Letter regarding a sample 'Giusti Gausel-ea Filter and Separator' received after the Motor Exhibition.
View original record 4037 Wor/A10/221120. 22nd November 1920. Messrs The C.P.Preston Co.Ltd., Holborn House, 112 High Holborn, LONDON. W.C. Dear Sirs, With reference to your letter of the 18th inst., and sample Giusti…

Scan014 Letter proposing to send a 'Giusti Gauzeless Filter and Separator' for testing and demonstration purposes.
View original record Y4037 THE SAUNDERS PETROL SAVER Saves 15% to 30% of Petrol Increases Power 10% to 20% Ensures Cleaner Plugs. Telephone No: Holborn 983. Telegraphic & Cable Address: 'Prestadco, Westcent London.' THE…

Scan015 Product guarantee certificate for the Saunders Petrol Saver from The C.P. Preston Co., Ltd.
View original record The Preston Guarantee 4037 At different times in the past some manufacturers have sold their goods under a guarantee which, on being looked closely into, has left them a loophole to avoid fulfilment…

Scan016 Advertisement leaflet for the 'Giusti' gauzeless petrol filter and separator.
View original record only necessary for the motorist, be he experienced, or otherwise, to cut his petrol pipe in any horizontal position between the petrol tank and the carburettor, when after allowing for a length being…

Scan017 Leaflet describing the scientific principle, construction, and fitting of the Giusti Gauzeless Filter and Separator.
View original record In the Old Days. In pre-war days, even when petrol was comparatively clean, a petrol filter was a necessary fitting, but at the present time, when motor spirit is full of impurities, and, in the case…

Scan018 Letter from C.P. Preston Company Ltd. to Rolls-Royce acknowledging their letter regarding the Giusti Gauzeless Petrol Filter.
View original record X3701 Y4037 THE SAUNDERS PETROL SAVER Telephone No: Holborn 983. Telegraphic & Cable Address: 'Prestadeo, Westcent London.' THE C.P. PRESTON COMPANY, LTD. MANUFACTURERS OF ELECTRICAL AND MOTOR CAR…

Scan019 To the Accountancy Department regarding an unsolicited invoice for a filter sent for trial.
View original record X2761 F.C. X4037. Mr. Hall. Accountancy Dept. from Hs/TMW. Hs/TMW2/LG1.12.20. Enclosed please find invoice from C.P. Preston Co.Ltd., Please note this Filter was never ordered by us but has been sent…

Scan020 Letter to C.P. Preston Co. Ltd. regarding a petrol filter submitted for evaluation by the Experimental Department.
View original record RECEIVED DEC 1 gFC. Hs3/LG/TMW. 1st. Dec. 1920. The C.P. Preston Co.Ltd., 112 High Holborn, London W.C. Dear Sirs, Petrol Filter which you addressed to Mr. Wormald has been handed over to the…

Scan021 Follow-up letter from C.P. Preston Co. Ltd enquiring about the test results for their 'Giusti Gauzeless Filter' and Separator.
View original record THE SAUNDERS PETROL SAVER Saves 15% to 30% of Petrol Increases Power 10% to 20% Ensures Cleaner Plugs. Telephone No: Holborn 983 Telegraphic & Cable Address: 'Presladco,' Westcent, London. THE C.P.…

Scan022 Follow-up letter to C.P. Preston Co. Ltd. regarding the time needed to test a filter before providing an opinion on its quality.
View original record X3707 Y4037 R F E. hg/TMM/LG. 15th. Jan. 1921. The C.P. Preston Co. Ltd., Holborn House, 112 High Holborn, London W.C. Dear Sirs, Your ref:- WRP/vc 14.1.21. We beg to refer you to our letter of 1st.…

Scan023 Cover note regarding correspondence with C.P. Preston Company.
View original record X-3701 (crossed out) G.F.C. 44037. To W.O.R. from Hs/TMW Hs/TMW3/LG15.1.21. X3701 RE. C.P. PRESTON COMPANY. We wrote the above Company on Dec.1st.last, copy of which we attach. We have nothing to add…

Scan024 Letter to The C.P. Preston Co.Ltd. acknowledging receipt of a petrol filter for evaluation by the Experimental Department.
View original record R.R. 199 (250I) (SD976 19-7-17) MP180805 X 3701 C O P Y. Hs/TMW3/LG. 1st. Dec. 1920. The C.P. Preston Co.Ltd., 112 High Holborn, London W.C. Dear Sirs, Petrol Filter which you addressed to Mr. Wormald…

Scan025 Letter from C.P. Preston Company Ltd. regarding the testing of their Saunders Petrol Saver filter.
View original record THE SAUNDERS PETROL SAVER Saves 15% to 30% of Petrol Increases Power 10% to 20% Ensures Cleaner Plugs. BRANCH AGENCIES IN THE BRITISH ISLES: BELFAST--Hicks Bros., & Co., 7, Waring Street.…

Scan026 New petrol filter for cars and aero engines, presented by Sir Egerton Graeme.
View original record K3901 (struck through) H1/TB/19.7.23 K4037 S/W. Hs. Re:- Sir Egerton Graeme, Bachelors' Club, Piccadilly, W. CJ., who knows the above gentleman, brought him in to my office to-day, in order that he…

Scan027 Clarifying a misunderstanding regarding petrol filter samples for Sir Egerton H. Graeme.
View original record X3701 X6037 H5/TB/15.8.23 S/W. Hs. from H. Re:- Sir Egerton H. Graeme, Bt., Bachelor's Club, Piccadilly, London, W. Further to my memo H1/TB/19.7.23. There has been some misunderstanding by Sir…

Scan028 Update on a petrol filter experiment sent by Sir Egerton Graeme.
View original record Y3701 74037 Hr1/TB/18.12.23 S/W. Hs. from Hr. Re:- Sir Egerton Graeme, Bart. Ref: H1/TB/19.7.23 and H5/TB/15.8.23. Have you yet reported to CJ. on the Petrol Filter which the above gentleman sent up…

Scan029 Evaluation of petrol filters supplied by Sir Egerton Graeme, recommending against their standard use due to design flaws.
View original record X 3701 44037 W/S. Hr. from Hs. Hs2/LG28.12.23. PETROL FILTERS SUPPLIED BY SIR EGERTON GRAEME. We have fitted one of these filters to a 20 HP. car and another one to the 40/50 HP. They have run 4500…

Scan030 The return of petrol filters to a customer, Sir Egerton Graeme.
View original record Handwritten: f4037 To Hs. from CJ. re Petrol Filters - Sir Egerton Graeme.Bt. CJ7/E31/12/23 Referring to your Hs2/LG28/12/23, please have the filters returned to 2x Sir Egerton Graeme, Bt., at the…

Scan031 The return of two loaned petrol filters to Sir Egerton Graeme.
View original record To BP. from Hs. c. to Mr. Chatwin. 74037. Hs6/LG17.1.24. We are sending into the Stores :- 2 Petrol Filters. Will you please instruct these to be despatched to :- Sir Egerton Graeme, Bt., Bachelors…

Scan032 Letter to Sir Egerton Graeme concerning the return of two filters loaned for experimental tests.
View original record Y/3704 +403) Hs5/LG17.1.24. 17th. Jan. 1924. Sir Egerton Graeme, Bt., Bachelors Club, Piccadilly, London, W. Dear Sir, We are returning to you the 2 Filters you kindly loaned to us for experimental…

Scan033 Issues with Sir E.H. Graeme's filters, which were found to leak petrol during testing.
View original record 44037 CJ. from Hs. Hs8/LG7.2.24. Sir E.H. Graeme - Filters. X.3701 With reference to the attached correspondence. The petrol did escape from these filters whilst on test. On one car to which they were…

Scan034 Despatch of 4 unions for petrol filters to Sir Egerton Graeme.
View original record 74037 BP. from Hs. c. to Mr. Chatwin. Hs2/LG12. 2. 24. We are sending into the Stores for despatch to Sir Egerton Graeme, Bt., Bachelors Club, Piccadilly, London, W. 4 unions. These unions are bits…

Scan035 Letter to Sir Egerton Graeme regarding the dispatch of 4 unions for petrol filters.
View original record V-701 /4037 Hsl/LG. 12th. Feb. 1924. Sir Egerton Graeme, Bt., Bachelors Club, Piccadilly, London, W. Dear Sir, PETROL FILTERS. We have despatched to you today, under separate cover - 4 unions. We…

Scan036 Acknowledgement of a memo and the safe receipt of Lympid filters.
View original record X4037 TELEPHONE:-GERRARD 1174. TELEGRAMS }"YAVAGRAEME CABLEGRAMS}PIGGY, LONDON" DIRECTORS SIR E. HAMOND-GRAEME, BART. LADY HAMOND-GRAEME. E. HAMOND-GRAEME LTD KINGSBURY HOUSE, 15 & 17, KING STREET, ST…

Scan037 Forwarding a letter and device from Auto-Klean Strainers Ltd for evaluation.
View original record YL037 PN9/DN/17.4.24. TO Hs. FROM PN. I am sending to you a letter I have received and replied to, from Capt. Barker of the Auto-Klean Strainers Ltd. and also a package which they have sent to me…

Scan038 Letter from Auto-Klean Strainers Ltd concerning the supply of two 'P' type strainers for evaluation.
View original record AUTO-KLEAN STRAINERS LTD MANUFACTURERS OF STRAINING PLANT TELEPHONE, AVENUE 5645 TELEGRAMS, "AUTOKLEAN FEN, LONDON" CODES: BENTLEY'S A.B.C. 5TH EDITION OUR REF. G.R. YOUR REF. IA, NEW LONDON STREET…

Scan039 Advertising brochure for the Bassick Gas-co-lator visible gasoline filter.
View original record Panel 1: Your Motor Needs Clean Gas Clean gas gives maximum explosion power, clean spark plugs and perfect carburetion by keeping your carburetor free from dirt and in such good order that it never…

Scan040 Advertisement for the Bassick Gas-co-lator, a visible gasoline filter designed to eliminate carburetor trouble.
View original record BASSICK GAS-CO-LATOR VISIBLE GASOLINE FILTER GIVE YOUR ENGINE CLEAN GAS CLEAN gasoline eliminates carburetor trouble. It gives a sweeter running motor—no more spitting, coughing and loss of power. You…

Scan041 Comparing a 'Milegal Petrol Filler' to the currently used 'Ligall Petrol Filler'.
View original record 74037 Hs. from ROY. ROY11/MG23.2.25 Attached is a Milegal Petrol Filler - for which the makers are claiming much. It seems to me in some ways this is superior to the Ligall Petrol Filler we are at…

Scan042 Correspondence from 'Milegal Petrol Filler' regarding the durability of their petrol pourer and cork float.
View original record Hs. from ROY. e. to Hx. -------------- ROY9/MG27.2.25 -------------- The Milegal Petrol Filler people write as copy attached. They also state one can stand on the Petrol pourer and Cork Float and not…

Scan043 Letter from Milegal Meters Ltd. advising on cleaning a gauze and the type of tubing being fitted.
View original record Copy From: MILEGAL METERS LTD. Winchester House, Victoria Square, BIRMINGHAM February 25th.1925 Messrs. Rolls-Royce Ltd. DERBY Dear Sirs, "With regard to the question of cleaning the "gauze. This is…

Scan044 Advertisement for the 'Twentisec' Petrol Pourer, a device for quickly transferring fuel.
View original record TWENTISEC Petrol Pourer (Registered No. 686851/21. Prov. Patented). Empties a 2-gallon Can in 20 Seconds It is important to obtain this result that the can be quickly upturned and held in the position…

Scan045 Promotional leaflet and correspondence regarding the 'TWENTISEC' petrol pourer.
View original record TWENTISEC Petrol Pourer (Registered No. 680881. Prov. Patented.) Empties a 2-gallon Can in 20 seconds. It is important to obtain this result that the can be quickly upturned and held in the position…

Scan046 Suggesting the trial of an Auto-Klean strainer.
View original record TO HS. FROM RS. (SLO37) (Y-701) RS3/M26.10.25. AUTO-KLEAN STRAINERS. Referring to the attached illustration, Mr. Royce suggests that it is worth while you getting one of these, and trying it.…

Scan047 Promotional brochure for the Auto-Klean Strainer, detailing its features, guarantee, and price.
View original record GUARANTEE We guarantee to refund your money if the AUTO-KLEAN Strainer does not give you entire satisfaction. British product The Strainer is entirely a British proposition. It is designed and…

Scan048 Promotional leaflet explaining the function, benefits, and technical specifications of the Auto-Klean Strainer with a cross-sectional diagram.
View original record Some vital reasons why you should fit the Auto-Klean Strainer HAVE YOU EXPERIENCED engine trouble or stoppages due to a dirty carburettor or a choked jet causing you inconvenient delays of an…

Scan049 Advertisement for Auto-Klean gauzeless petrol filters from Beldam Asbestos Company.
View original record REVOLUTION IN STRAINING A sluggish Engine is often due to a Dirty Gauze—overcome this by using AUTO-KLEAN STRAINERS THE GAUZELESS PETROL FILTER. The only Filter that can be cleaned while the Engine is…

Scan050 Product information sheet for Auto-Klean Strainers, detailing their operation and features.
View original record AUTO-KLEAN STRAINERS. As supplied to the Admiralty, the Principal Engineering and Public Transport Companies. A British Invention . . Of British Manufacture. . . . Patented throughout the World.…

Scan051 The performance of Auto-Klean strainers on a test bench and a 40/50 HP car.
View original record R.R. 493a (50 M) (D.D. 21. 12-6-25) J.R.D. EXPERIMENTAL REPORT. Expt. No. Y4037 REF Hs/ACL/LG161125 To R. from Hs/ACL. c. to CJ. BJ. c. to RG. E1 c. to DA. BY. c. to Wor. AUTO-KLEAN STRAINERS.…

Scan052 Instrument strainer fault and petrol leakage from a filter.
View original record contd :- -2- Hs/ACL1/LG16.11.25. circular plates and turning the handle did not, as is claimed, clean the instrument. After removing the strainer, no trouble was experienced, the particles of fluff…

Scan053 The purchase of a petrol filter from Tecalemit Ltd.
View original record to Wd/Ms. from Hs. X4037 Hs4/LG18.11.26. Please obtain for us from Messrs. Tecalemit Ltd., 10 Little Portland St., London W.1. :- 1 Tecalemit Visible Petrol Filter. Hs.

Scan054 Petrol filters, comparing chamois leather to gauze and mentioning a new 'edge' filtration system being tested.
View original record To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to PN. CWB. 4037 Hs2/LG1.12.26. PETROL FILTERS. X 53 Recently we have been recommended a chamois leather type of filter. We have taken the…

Scan055 Letter to a customer about fitting a fuel filter and the problems associated with using chamois leather with certain fuels like Benzole.
View original record s/w Hs 44037 PN1/EH.21226. December 2nd, 1926. F. E. Sidney, Esq., Moreton, Holly Place, Hampstead, N.W. Dear Mr. Sidney, You will remember that we have agreed to fit a filter between the carburretor…

Scan056 Cancellation of an order for a Tecalemit Filter as its chamois leather is not suitable for benzol.
View original record To Wd/GEA. from Hs. We return herewith correspondence in connection with Tecalemit Filter. In view of the makers remarks that the chamois leather filter is not suitable for benzol, we wish to cancel…

Scan057 Letter from Air-Maze Corporation regarding the supply of their air filters and their status as standard equipment.
View original record Albert E. Schaaf, President C. S. Britton, Treasurer [Handwritten] Copy entered By 21-12-26 [Handwritten] X4037. AIR-MAZE CORPORATION AIR CLEANERS 321 Caxton Building Cleveland, Ohio Factory—Grand…

Scan058 Promotional brochure for the 'AIR-MAZE' air cleaner, detailing its features, benefits, and performance with a graph.
View original record PAGE 1: Curve Showing Drop in Manifold Suction at Different Car Speeds Inlet Manifold Depression—Inches of Mercury Cubic Feet of Air per Second Miles per Hour Car Speed Cut Down 7 to 10 Miles per Hour…

Scan059 Informational brochure explaining the principle, construction, and benefits of the Air-Maze air filter.
View original record Illustration above shows three sizes of the Air-Maze, for large, medium and small cars, each about 1/4 actual size. To the left is the Air-Maze with top unclamped. Note baffling effect of screen. See…

Scan060 The function and testing of an experimental Stream-Line filter invented by Dr. Hele-Shaw.
View original record To Hs. from E. c. to BJ. X-5701 V4037 E1/M15.12.26. STREAM LINE FILTER. We are sending you under separate cover an experimental model of a so called stream line filter which Mr. Royce would like you…

Scan061 Advertisement leaflet for 'Auto-Klean' gauzeless petrol filters.
View original record X4037 REVOLUTION IN STRAINING A sluggish Engine is often due to a Dirty Gauze—overcome this by using AUTO-KLEAN STRAINERS THE GAUZELESS PETROL FILTER. The only Filter that can be cleaned while the…

Scan062 Advertisement leaflet for the Auto-Klean strainer, detailing its operational principle, cleaning process, and pricing.
View original record AUTO-KLEAN STRAINERS As supplied to the Admiralty, the Principal Engineering and Public Transport Companies A British Invention . . . Of British Manufacture . . . Patented throughout the World.…

Scan063 Request to obtain one Zenith Petrol Filter from The Zenith Carburetter Co. Ltd.
View original record To Wd/Ms. from Hs. Y3700 Hs3/LG18.11.26. Please obtain for us from The Zenith Carburetter Co. Ltd., 42, Newman St., London W.1 :- 1 Zenith Petrol Filter. Hs.

Scan064 Low capacity of a Zenith petrol filter and requesting information on a larger alternative.
View original record X370b To Wd/Ms. from Hs/Rm. Hs/Rm2/LG22.12.26. ZENITH PETROL FILTER. With reference to the petrol filter which you recently obtained for us from The Zenith Carburetter Co. Ltd., 42, Newman St., London…

Scan065 Letter from Zenith Carburetters Ltd. clarifying a misunderstanding about a supplied filter and questioning a complaint of it choking.
View original record Copy of letter received from:- MESSRS. THE ZENITH CARBURETTERS LTD. 40-42 NEWMAN STREET LONDON W.1. Messrs. Rolls Royce Limited. DERBY. 28th December 1926 Dear Sirs, Ref. Wd/AW2/N.241226. We are in…

Scan066 Correcting the description of an experimental filter obtained from the Zenith Carburetter Co Ltd.
View original record Hs/Rm. X3700 Wd/AW1/N.29.12.26. In accordance with yours Hs/Rm2/LG22.12.26. we have taken up with the Zenith Carburetter Co Ltd., regarding the filter which we have obtained for Experimental purposes.…

Scan067 Comparative tests between a Zenith filter and a standard gauze filter for carburettors.
View original record To Wd/AW. from Hs/Rm. X3700 Hs/Rm2/LG30.12.26. ZENITH FILTER. X3700 With reference to the letter from the Zenith Carburetter Co. enclosed with your Wd/AW1/N29.12.26. We would like you to make the…

Scan068 Letter from The Zenith Carburetter Co Ltd. discussing a report on filter tests.
View original record COPY X370D The Zenith Carburetter Co Ltd. Messrs. Rolls Royce Ltd., D E R B Y Dec 31st. 1926. Dear Sirs, Ref. Wd/AW14/N.301226 We are much obliged for your letter of 30th. with regard to the test…

Scan069 Forwarding a request for a report on fitting a chamois leather filter to a 20HP car due to complaints of petrol stoppages.
View original record To Hs. from Hm. ri037 Hm/WW4/W5.1.27. U. 20HP. Chassis No. GOK.75. We give below extract from a note we have received from S. this morning, and shall be glad if you will let us know as early as…

Scan070 The decision not to use chamois leather for petrol filters due to material rot.
View original record To Hm. from Hs. X4037 Hs1/LG5.1.27. 20 HP. GOK-75. X4037 / X.53 With reference to the enquiry from 'S' when we shall be fitting the chamois leather filter. It has been decided that we shall not use…

Scan071 Covering memo for blueprints and instructions for a stream line filter.
View original record +3701 (strikethrough) +4037. TO HS. FROM E. STREAM LINE FILTER. Herewith please find blueprint and instructions for fitting stream line filter, which should have accompanied the actual sample which we…

Scan072 Instructions from Stream-Line Filter Co. Ltd. for fitting a motor car oil renovator.
View original record STREAM-LINE FILTER CO. LTD. Instructions for fitting Motor Car Oil Renovator. (See Drawing No. 26/566.) 1. The renovator should be screwed on to the dashboard under the bonnet in a convenient…

Scan073 Diagram showing the attachment of a Stream-Line filter to a car.
View original record 1. EXHAUST INLET EXHAUST MANIFOLD OIL HEATER OIL PRESSURE GAUGE ON DASHBOARD. TEE INSERTED IN EXISTING PIPE. 2. EXHAUST OUTLET. OPEN TO ATMOSPHERE. 3. DIRTY OIL INLET. 4. CLEAN OIL RETURN TO SUMP VIA…

Scan074 Bench testing of a new 'Zenith' edge filtration petrol filter and suggesting further road tests.
View original record To FH. from Hs/Rm. c. to G. c. to CWB. c. to Woy. V3700 Hs/RmS/LGS.1.27. PETROL FILTER. V3700 In response to the repeated request from Sales for an improved petrol filter. We have tested out the new…

Scan075 The experimental consideration of an auto cleaner oil filter for potential chassis incorporation.
View original record X4037. W.S.C. [Text is struck through] c. Hs. BY8/H. 10.1.27. AUTO CLEANER OIL FILTER. ------------------------- Referring to C12/C. 6.1.27. the Experimental Dept. have one of these under experimental…

Scan076 Arrangement to fit Zenith edge filtration fitments to three cars.
View original record S/W. To Hs. Copy to Hs. OWB. Wor. X3700 PN3/EH.13.1.27. In reply to your Hs/Rm5/LGS.1.27, we can arrange to fit one of these Zenith edge filtration fitments to three cars, i.e. 2 inspectors' cars and…

Scan077 Request to obtain half a dozen Zenith carburetter filters for testing.
View original record To Wd/Ms. from Hs/Rm. X3700 Hs/Rm3/LG14.1.27. X3035 The Zenith carburetter people have offered to supply us with half a dozen of their filters as samples for test. We wish to take advantage of this…

Scan078 The trial of a Zenith petrol filter and its comparison to the standard gauze filter.
View original record To Hm. from Hs/Rm. Y3700 Hs/Rm2/LG14.1.27. RE. GOK-75 - V.Sullivan. We have tried the Zenith petrol filter. This is certainly a finer filter than our present gauze. We also think that it will be much…

Scan079 Correspondence regarding the experimental fitting of Zenith petrol filters to address fuel line choke issues on 20 HP models and Phantoms.
View original record S/W. To Hs. Copy to H. M. CWB. Bt. Wor. Y3700 PN1/EH.18.1.27. Hs RECEIVED JAN 19 1927 Zenith Filters - Experimental. In further reference to PN3/EH13.1.27., as cases of petrol line choke are…

Scan080 Letter from Auto-Klean Strainers Ltd. regarding the supply and testing of petrol and oil strainers for motor cars.
View original record F4037 REG. TRADE MARK PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. OUR REF. CCB/GR. Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment…

Scan081 Letter from Auto-Klean Strainers Ltd. regarding a new design of petrol filter and potential collaboration.
View original record Auto-Klean Strainers Ltd. Continuation Sheet No. 2. Date 22.1.27. Likewise if there are any special conditions which you require for your petrol strainers, it would be useful if you would kindly fill…

Scan082 Arrangement drawing for fitting Zenith petrol filters to 20 HP cars and challenges with the Phantom model.
View original record W/S. To PN. from Hs/Rm. Y3700 Hs/Rm3/T24.1.27. We are sending you herewith an arrangement drawing for fitting the Zenith petrol filters to the two 20 HP. cars which you mention. The pipes necessary…

Scan083 Sending two Zenith petrol filters to Conduit Street, London.
View original record To D/BP. from Hs/Rn. c. Mt. V3700 Hs/Rn4/T24.1.27. RE ZENITH PETROL FILTERS. NIGHTINGALE CHORLEY We are sending into the Stores for despatch to PN., Conduit Street, London, :- 2 Zenith Petrol Filters.…

Scan084 Modification to a Zenith petrol filter, requesting two glass replacements from the manufacturer.
View original record To Wd. from Hs/Rm. Y3700 HsRm4/T26.1.27. ZENITH PETROL FILTER We send you herewith a sketch of a modification which we have carried out to these filters, together with an explanatory note. We should…

Scan085 Proposed modification to a Zenith petrol filter to improve air release.
View original record Hs/Rn/T26.1.27. ZENITH PETROL FILTER. We find that the air release provided on this filter does not allow the air to escape very satisfactorily when the filter is filled up after being cleaned. We…

Scan086 Drawing illustrating modifications to a Zenith petrol filter, detailing slots in the top baffle and deflector plate.
View original record f3700. 3 SLOTS IN TOP BAFFLE .437 LONG x .062 WIDE & EQUALLY SPACED. 3 SLOTS EQUALLY SPACED .375 LONG x .062 WIDE PLAN VIEW OF FILTER UNIT SHOWING SLOTS IN DEFLECTOR PLATE. MODIFICATIONS TO ZENITH…

Scan087 Letter from Auto Klean Strainers Limited confirming a new filter is being made to address oversized plate spacing issues.
View original record 46037 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. 1a, New London Street, Tower House, 40, Trinity Square, London, E.C.3. PATENTED AUTO-KLEAN…

Scan088 Continuation letter from Auto-Klean Strainers Ltd. regarding arrangements and testing of a filter.
View original record Auto-Klean Strainers Ltd. . Continuation Sheet No. 2. Date 26.2.27. shall be pleased to make the necessary arrangements. We should like you to retain the original filter which we sent to you until our…

Scan089 Arrangement drawing of an 'Auto-Klean' petrol strainer with parts list.
View original record SCALE. FULL SIZE, AUTO ● KLEAN STRAINERS, OUTLET, INLET, 1/4" GAS THREAD., ON EACH SIDE., 3 1/2", 2 1/4", 2", THE AUTO-KLEAN FILTER PATS 145339 & 215098, TAPPED 1/4" WHIT 3/8" DEEP, ON EACH SIDE.,…

Scan090 Reprint from 'The Motor Boat' magazine describing the Blackman petrol filter for marine engines.
View original record X403-7 FILE UNDER FILTERS PLEASE Reprinted from “THE MOTOR BOAT,” January 21, 1927. A NEW PETROL FILTER FOR MARINE MOTORS. Although of recent introduction, the Blackman petrol filter has met with much…

Scan091 Fitting of a Zenith Filter to chassis GOK/75.
View original record N-W. Hs. V370D A15/H.28.1.27. re Chassis GOK/75. --------------------- "S" were recently in communication with "W" about the fitting of a Zenith Filter to the engine of the above car. In this…

Scan092 Communication regarding a modification to a Zenith Petrol Filter and the supply of replacement glass parts.
View original record Hs/Rm.from Wd. X3700 Wd1/NJ/31.1.27. Zenith Petrol Filter. Referring to yours Hs/Rm4/T26.1.27 and the explanatory note and sketch thereto attached, we are in receipt of a letter from Zenith…

Scan093 Works order for the supply of a Zenith Filter for a 20-HP chassis.
View original record RR 618C (DE 239 10-8-26) BM. 2/401. X3700 Mr Hives Experimental Dept. Y24474 WORKS ORDER NO. 36687 Date 2nd Feb 1927 CHASSIS NO. GOK-65 Customer's Order No. Hr5/H 31.1.27 Type of Chassis or Engine…

Scan094 Suggestion to obtain a scheme for fitting a Zenith petrol filter to the 20 HP model.
View original record W/N: Driver To A. from Hs/Rm. Remarks on the running generally X370D Hs/Rm2/LG31.1.27. ZENITH PETROL FILTER. A15/H28.1.27. X5196 We suggest that you obtain a scheme for fitting the Zenith petrol…

Scan095 Fitting a Zenith petrol filter to cars to gain experience with it in the hands of customers.
View original record To BP. from Hs. X3706 Hs7/LGl.2.27. ZENITH PETROL FILTER. With reference to Hr5/LH31.1.27 and attached note Cr15/LH25.1.27 attached herewith. It has been arranged that we shall fit the Zenith filter…

Scan096 Instructions on fitting a Zenith petrol filter to a 20 HP car and resolving air bubble issues.
View original record W/N. X3700 Hs/Rm3/LGL.2.27. ZENITH PETROL FILTER. We send you herewith blueprint indicating how the Zenith petrol filter should be fitted to the 20 HP. car. Some difficulty may be experienced in…

Scan097 Letter and pattern filter from the Blackman Petrol Filter Co. Ltd.
View original record To E. from BJ. BJ1/E3/2/27 Would you kindly deal with the attached letter from the Blackman Petrol Filter Co.Ld. with reference to their latest type of filter. This letter was forwarded to me from…

Scan098 Promotional advertisement for the Blackman Petrol Filter, detailing features, test results, and testimonials.
View original record THE BLACKMAN PETROL FILTER Saves Petrol. Filters upwards Delivers Pure Petrol Only Eliminates all Carburetter Troubles and costs only £1 TWENTY-FOUR HOURS ENDURANCE TEST AT LE MANS June, 1926. All of…

Scan099 Promotional document detailing achievements and testimonials for the Blackman Petrol Filter.
View original record ACHIEVEMENTS TESTIFY— EXPERTS PROCLAIM— The Blackman Petrol Filter to be without compare for certain efficiency. WORLD RECORD BEATEN IN 24 HOURS' TEST. Robert Senechal on his Senechal car beat the…

Scan100 Sales letter from The Blackman Petrol Filter Co Ltd promoting their latest filter with solderless unions.
View original record Handwritten: J H action. to E.F. Wait for details. Recd ackd 2/2. STAMP: Received 2 FEB 1927 The Blackman Petrol Filter Co Ltd TELEPHONE: GERRARD 1736 REGISTERED OFFICES: 10 GRAPE STREET 210B…

Scan101 Continuation letter from The Blackman Petrol Filter Co. Ltd. regarding the testing of a sample on a demonstration car.
View original record THE BLACKMAN PETROL FILTER CO. LTD. CONTINUATION SHEET No. 2. Messrs. Rolls Royce Ltd., 1 /2/27. We trust the sample sent will be fitted to a demonstration car for thoroughly testing, after which we…

Scan102 Advertising leaflet for Blackman Petrol Filters featuring testimonials from motorsport achievements in 1926-1927.
View original record TRIBUTE from MISS ELSIE TATTERSALL The famous Motor Boat Racer Clayton Lodge, Southend-on-Sea. 17th January, 1927. Dear Sirs, The "Blackman" Petrol Filter with which you supplied me some time ago, was…

Scan103 Advertisement for the Blackman Petrol Filter, detailing its features, benefits, and testimonials.
View original record Carburettor Trouble Finally and Definitely Banished! PROCLAIMED BY LEADING EXPERTS by the world's best and most scientific Petrol Filter THOUSANDS IN USE Impurities in Petrol cause 90% of all…

Scan104 Micro-examination report on grit extracted from two petrol samples.
View original record Micro-examination Report. X 4037 M515. Hs/Mr.Robotham. H12/EA7.2.27. Laboratory. Re Two Samples of Petrol containing foreign matter (Your Ref. Hs/Rm2/LG3.2.27.) The grit extracted from the above…

Scan105 Testing of Autoclean and Zenith filters and a request for a laboratory test.
View original record To Hl. from Hs/Rm. X4037 Hs/Rm2/LG14.2.27. +3700 We have sent you 2 filters which we have been testing - the Autoclean and Zenith (the Zenith having the glass cover). As far as we can ascertain the…

Scan106 Outlining the testing procedure for four different types of filters.
View original record 43700 7.4037 To H1. from Hs/Rm. FILTERS. Four types of filters are being tested :- (1) Zenith. (2) AutoKlean. (3) Standard. (4) Centrifugial. Two tests are being made on each filter :- (a) Test made…

Scan107 Letter to a supplier discussing the performance of a petrol filter, comparing it to a competitor, and enquiring about a custom-made version.
View original record XUo=7 Exptl: Dept: Hs/Rn3/LG. 18th. Feb. 1927. Messrs. The Auto Klean Strainers Ltd., 1a, New London Street, London E.C.3. Dear Sirs, We have tested one of your P-S type petrol filters. The only real…

Scan108 Confirmation and request for micro-photographs of fluff from a choked jet and particles from various filters.
View original record To Hl. from Hs/Rm. X4037 Hs/Rml/LG23. 2. 2. 27. This is to confirm that you will take a micro photograph of the sample of fluff actually extracted from the choked jet, also of the specimens with which…

Scan109 Investigation into choked petrol jets caused by fluff, detailing jet sizes and filter gauze analysis.
View original record To R. from Hs/Rm. c. to BJ. WDF. c. to RG. CE. c. to DA. BY. c. to OY. HM. c. to MX. EP. PETROL FILTERS X.3701 X.3700 X.4037. Experimentally, we rarely encounter a choked jet. The contention of Sales…

Scan110 Analysis of foreign matter causing choked jets and a comparative test of different filters.
View original record contd :- -2- to .0055" square. Therefore particles large enough to obstruct the jet can pass this gauze. (c) Foreign matter causing choked jets. We examined a specimen of fluff actually extracted by…

Scan111 The performance, particle analysis, and road testing of a Zenith petrol filter.
View original record contd :- -3- amount of foreign matter. No attempt was made to reproduce road vibration in these tests. It was found that, on an average, the Zenith filter choked up in one-tenth the time of the std.…

Scan112 The performance and issues with Auto Klean and Chamois leather fuel filters.
View original record contd :- -4- (g) Auto Klean Strainer We have also been trying one of the latest models of this type of strainer. The main objection to it is that owing to the cleaning device incorporated, the…

Scan113 Modification to a Zenith filter to resolve an issue with trapped air after cleaning.
View original record contd :- -5- if broken, will prevent the running of the car. We found that after cleaning the Zenith filter, a certain amount of the air was trapped in the system. We have incorporated a few small…

Scan114 Comparison of fluff extracted from a choked low-speed jet with a standard carburetter petrol filter gauze.
View original record R.R. 403 5 M. S.K. 724, 5'4-23) G. 3239. ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A514. MAGNIFICATION: 10 DIAMETERS. CHOKED LOW SPEED JETS. FLUFF ACTUALLY EXTRACTED FROM A CHOKED JET.…

Scan115 Laboratory report with two photomicrographs comparing foreign matter passing through different filters.
View original record N.B. The % of fluff is the only point to be noted. The grit passing the Zenith filter is so fine that it coagulates into lumps. X4037 [Left Card] R.R. 403 (S.H) [S.H. 839, 31-12-20] G 2964 ROLLS-ROYCE…

Scan116 Blueprint detailing modifications to a Zenith petrol filter, showing slot dimensions and a dismantled view.
View original record 3 SLOTS IN TOP BAFFLE .437 LONG X .062 WIDE & EQUALLY SPACED. 3 SLOTS EQUALLY SPACED. .375 LONG X .062 WIDE. PLAN VIEW OF FILTER UNIT SHOWING SLOTS IN DEFLECTOR PLATE. SHOWING HOW EASILY THE ZENITH…

Scan117 Cover note forwarding a letter from the Blackman Petrol Filter Co. Ltd. regarding a filter.
View original record E. ------- X4037 BY/Mtn9/G.26.2.27. We attach hereto letter received from the Blackman Petrol Filter Co. Ltd. in connection with a filter they supplied to us a short time ago, and which we under-…

Scan118 Letter from The Blackman Petrol Filter Co Ltd proposing their new petrol filter for adoption.
View original record The BLACKMAN PETROL FILTER Co LTD. TELEPHONE: GERRARD: 1736 YOUR REF _______ OUR REF GHS/RG. REGISTERED OFFICE: 10 GRAPE STREET 210B SHAFTESBURY AVENUE LONDON W.C.2 A. BLACKMAN (MAN. DIR.) C. K.…

Scan119 Advertisement leaflet for The Blackman Petrol Filter, detailing its features, price, and customer testimonials.
View original record THE BLACKMAN PETROL FILTER Saves Petrol. Filters upwards Delivers Pure Petrol Only Eliminates all Carburetter Troubles ... costs only £1 TWENTY-FOUR HOURS ENDURANCE TEST AT LE MANS June, 1926. All of…

Scan120 Promotional document showcasing testimonials and race wins for the Blackman Petrol Filter.
View original record ACHIEVEMENTS TESTIFY— EXPERTS PROCLAIM— The Blackman Petrol Filter to be without compare for certain efficiency. WORLD RECORD BEATEN IN 24 HOURS' TEST. Robert Senechal on his Senechal car beat the…

Scan121 Letter to Messrs. The AutoKlean Strainers Ltd. arranging a meeting to discuss filters.
View original record Expl: Dept: Hs/Rn6/LG. /4037 1st. Mar. 1927. Messrs. The AutoKlean Strainers Ltd., Tower House, 40, Trinity Sq., London E.C.3. Dear Sirs, With reference to your letter of the 28th.ult. We shall be…

Scan122 Letter from Auto Klean Strainers Limited regarding a meeting to discuss and trial a new filter.
View original record 46037 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. REG. TRADE MARK PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. OUR…

Scan123 Letter from Auto Klean Strainers Limited regarding oil strainers for a Morris chassis and potential aeroplane purposes.
View original record Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. OUR REF. OCB/GR.…

Scan124 Letter confirming a telegram and rescheduling an appointment due to illness.
View original record 4037 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. REG. TRADE MARK PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC.…

Scan125 Letter from Auto Klean Strainers Limited confirming a telegram about a cancelled appointment due to illness.
View original record L4037 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. REG TRADE MARK PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. OUR…

Scan126 Letter from Auto Klean Strainers Limited postponing Mr Stuart's visit to Derby due to illness.
View original record X4037 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. Directors: ERNEST…

Scan127 Correspondence and a tool from the Blackman Petrol Filter Co. Ltd.
View original record TO HS/RM. FROM E. X4037 E1/M7.3.27. re. BLACKMAN PETROL FILTER Co. Ltd Referring to the above I attach herewith the last two letters received, together with the punch mentioned for expanding the…

Scan128 Zenith Filters, requisitions from Cricklewood, and the potential to fit them for customers.
View original record De-Wor. from Hm. " BY. " HS. /3700 Hm/WW15/W8.3.27. Re Zenith Filters. We have recently had occasion to draw Mr. Cowen's attention to requisitions which have been received from Cricklewood for Zenith…

Scan129 Trial and potential standardisation of Zenith filters on a 20 HP car.
View original record Mm. from Hs. c. to Wor. c. to BY. X3700 Hsl/LG9.3.27. ZENITH FILTERS. In our opinion the Zenith filter is an improvement over our present standard filter. We have fitted a Zenith filter on the 20 HP.…

Scan130 Letter from Auto Klean Strainers Limited arranging a meeting to discuss a filter.
View original record X4057 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. REG.TRADE MARK PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. OUR…

Scan131 The blocking of a Zenith petrol filter, particularly when running on reserve fuel, and a proposal for further investigation.
View original record X3700 Expl: Dept: Messrs. Rolls-Royce Ltd., Derby. 14th. April 1927. Hotel de France, Chateauroux, Indre, France. [Handwritten note: Yssual] Mr. Hancock from Hs/Rn. ZENITH PETROL FILTER. While we were…

Scan132 Letter to The Auto Klean Strainers Ltd. arranging a meeting with their Mr. Stuart.
View original record CERTIFICATE OF INSPECTION BY A.I.D (Reversed Text) ROLLS-ROYCE ENGINES AND SPARES (Reversed Text) X403 (Handwritten) Hs/Rm5/LG. Axpl: Dept: 15th. Mar.1927. The Auto Klean Strainers Ltd., Tower House,…

Scan133 Technical leaflet describing the function and specifications of the 'Auto-Klean' Strainer, type P.S.
View original record AUTO-KLEAN STRAINERS As supplied to the Admiralty, the Principal Engineering and Public Transport Companies. A British Invention ... Of British Manufacture ... Patented throughout the World.…

Scan134 Advertisement for Auto-Klean Strainers, a gauzeless petrol filter that can be cleaned while the engine is running.
View original record REVOLUTION IN STRAINING A sluggish Engine is often due to a Dirty Gauze—overcome this by using AUTO-KLEAN STRAINERS THE GAUZELESS PETROL FILTER. The only Filter that can be cleaned while the Engine is…

Scan135 Letter from Auto Klean Strainers Limited confirming a meeting arrangement for Mr. Stuart.
View original record Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. REG. TRADE MARK PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. OUR REF.…

Scan136 Letter from Auto Klean Strainers Limited regarding the testing and supply of petrol and lubricating strainers.
View original record Hs/Rm. X4058 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. Directors:…

Scan137 Blueprint for an Auto Klean Strainer, detailing its dimensions, materials, and capacity.
View original record SHEET No 1018 INLET & OUTLET BOSSES 2 3/8" DIA (AS SHOWN TAPPED 1" WHIT GAS THREAD) AUTO KLEAN STRAINER TAPPED 1" GAS FIXING FLANGE CAST ON EACH SIDE 2-3/8 WHIT HOLES IN EACH FLANGE TYPE K PRICES…

Scan138 Letter to Auto Klean Strainers Ltd. regarding the testing of petrol filters and requesting a 'K' type oil strainer on loan.
View original record X4037 Expl: Dept: HS/Rm2/LG. 13th. April 1927 Messrs. The Auto Klean Strainers Ltd., Tower House, 40, Trinity Sq., London E.C.3. Dear Sirs, We thank you for your letter of the 24th. ult., also for the…

Scan139 Letter from a supplier regarding the supply of petrol filters and a 'K' type strainer for trial purposes.
View original record X4037 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. REG.TRADE MARK PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB OIL, WATER, ETC. ETC. OUR…

Scan140 Letter discussing foreign matter in a petrol filter, leakage on shock absorbers, and testing of leather packings.
View original record X3700 Expl: Dept: Rolls-Royce Ltd., Derby. England. HS/Rm4/LG28.4.27. +5840L Hotel de France, Chateauroux, Indre, France. Mr. Hancock from HS/Rm. We thank you for your note of the 26th. We were very…

Scan141 Letter from Auto Klean Strainers Limited regarding the despatch of a 'K' type lubricating strainer for examination and testing.
View original record X4037 Auto Klean Strainers Limited Specialists in Marine & Land Straining Equipment BRITISH INVENTION. REG. TRADE MARK PATENTED AUTO-KLEAN STRAINERS FOR PETROL, FUEL OIL, LUB. OIL, WATER, ETC. ETC.…

Scan142 Letter from the Experimental Department regarding petrol starvation at high speeds, and arranging a test.
View original record X3700 Expl: Dept: Messrs. Rolls-Royce Ltd., Derby, England. 2nd. May 1927. X58406 /X3700 Hotel de France, Chateauroux, Indre - France. Mr. Hancock from Hs. We notice on your daily report dated 28.4.27…

Scan143 Letter from The Zenith Carburetter Co. Ltd. requesting a report on petrol filter tests.
View original record V3700 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: 'ZENICARBUR, PHONE,' LONDON. Telephones: MUSEUM 9106-9. Code: A.B.C. 5th Edition. THE ZENITH CARBURETTER CO.…

Scan144 Letter to the Zenith Carburettor Company regarding issues with filter choking during road and bench tests.
View original record X3700 HS/RML/LG. Expl: Dept: 9th. May 1927. The Zenith Carb. Co.Ltd., 40-42 Newman Street, London W.1. Dear Sirs, With reference to your letter of the 6th.inst. We have carried out and are still…

Scan145 Letter from Zenith Carburetter Co. Ltd. regarding an increase in the area of a filter element.
View original record X3700 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Telephones MUSEUM 9106-9. Code: A.B.C. 5TH EDITION. THE ZENITH CARBURETTER CO.…

Scan146 Sample plate filter received from the Zenith Carburetter Co for the Experimental Department.
View original record Hs. C to My/A/H. X3700 Roy/AW3/N.21.5.27. We received from the Zenith Carburetter Co Ltd., one Plate Filter with .07 clearance between the plates and we were unable to reserve the filter owing to the…

Scan147 Despatch of a Zenith petrol filter to be exchanged for a later type.
View original record To Roy/Ms. from Hs/Rm. K3700 c. to Mt. (Stores). Hs/Rm3/LG24.5.27. We are sending into the Stores to be despatch to The Zenith Carb. Co.Ltd., 40-42 Newman St., London W.1. 1 Zenith petrol filter.…

Scan148 Letter to The Zenith Carb. Co. Ltd. regarding the return of a filter with a small plate element and a request to exchange it for a later type with a large area for testing.
View original record X3700 Expl: Dept: Hs/Rn4/LG. 24th. May 1927. The Zenith Carb. Co.Ltd., 40-42 Newman Street, London W.1. Dear Sirs, We are returning to you under separate cover one of your filters with the small plate…

Scan149 Letter from The Zenith Carburetter Co. Ltd. regarding the exchange of a returned element for one with a larger area.
View original record X3700 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Telephones: MUSEUM 4616, 9106-9 Code: A.B.C. 5th Edition. THE ZENITH CARBURETTER…

Scan150 Letter to The Zenith Carburettor Company regarding an incorrect petrol filter element.
View original record X3700 Expl: Dept: Hs/Rm3/LG. 31st. May 1927. Messrs. The Zenith Carb. Co. Ltd., 40-42 Newman Street, London W.1. Dear Sirs, We have received the petrol filter which we sent to you to have an element…

Scan151 Letter from Zenith Carburetter Co. Ltd. discussing petrol filter specifications.
View original record 43700 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Telephones MUSEUM 9106-9. Code: A.B.C. 5th EDITION. THE ZENITH CARBURETTER CO.…

Scan152 Letter from Zenith Carburetter Co. clarifying a misunderstanding regarding the diameter of discs and filters.
View original record THE ZENITH CARBURETTER CO., LIMITED. Sheet No... 2 Messrs. Rolls Royce. Ltd. June 1st. 1927. slight misapprehension with regard to the diameter of these discs, and feel certain if you look into the…

Scan153 The standardization of the Zenith petrol filter for the 20 HP car, including specifications for plate gap and weight.
View original record To BY. from Hs/Rm. X3700 Hs/Rm4/LG2. 6. 27. ZENITH PETROL FILTER. We are in the process of standardizing the Zenith petrol filter for the 20 HP. car. The filter we have tested in France has a gap of…

Scan154 Letter to the Zenith Carburettor Company regarding filter specifications and a request for weight reduction.
View original record /3700 Expl: Dept: Hs/Rm2/LG. 2nd. June 1927. Messrs. The Zenith Carb. Co.Ltd., 40-42 Newman Street, London W.1. Dear Sirs, We thank you for your letter of the 1st. inst. We note your remarks with…

Scan155 Letter to Zenith Carburetter Co. Ltd. requesting the type number of a petrol filter suitable for a 20 HP chassis.
View original record X3700 Hs 3rd. June 1927. BY/Mtn10/G.3.6.37. Messrs. Zenith Carburetter Co. Ltd., 40/42 Newman Street, London. W.1. Dear Sirs, re PETROL FILTERS SUITABLE FOR OUR 20 HP. CHASSIS.…

Scan156 Letter from Zenith Carburetter Co. Ltd. discussing the weight and diameter of a disc.
View original record 43700 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Code: A.B.C. 5TH Edition. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.…

Scan157 Letter from Zenith Carburetter Co. Ltd. discussing filter modifications, using duralumin and increasing the number of discs.
View original record X3700 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Code: A.B.C. 5TH Edition. THE ZENITH CARBURETTER CO. LTD. Telephones MUSEUM…

Scan158 Letter from The Zenith Carburetter Co. regarding tests and the standardisation of a filter.
View original record THE ZENITH CARBURETTER CO., LIMITED. Sheet No. 2. Messrs. Rolls-Royce Ltd. June 8th.1927. so that you can complete your tests. We hope however that the proposed modifications will meet with your…

Scan159 Letter to Zenith Carburetter Co. regarding proposed design modifications to a filter element and requesting samples for testing.
View original record Y3700 Expl: Dept: Hs/Rm2/LG. 9th. June 1927. Messrs. Zenith Carburetter Co., 40-42 Newman Street, London W.1. C to Bey Dear Sirs, With reference to your letter of the 8th.inst. We note that you…

Scan160 Letter from Zenith Carburetter Co. Ltd. regarding modifications to a petrol filter.
View original record Y3700 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Code: A.B.C. 5TH. EDITION. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.…

Scan161 Standardisation report for a Zenith petrol filter to prevent jet stoppage.
View original record RR 722 REVISED (10H) (DE 649 9-12-26) 5M. 2/1157. Y3700 COMPLETED 11.6.27 STANDARDISATION of CHASSIS PARTS. Date 23.5.27 [STAMPS & HANDWRITING] [Left margin]: Ha [Circular stamp]: RECEIVED [Green…

Scan162 Introduction of a new standardized chassis part.
View original record STANDARDISATION OF CHASSIS PARTS (1) The number of the first chassis on which the new part will be fitted. 'L' (2) Date when the chassis will be handed to test. 8.10.27. (3) Cost of scrapped material,…

Scan163 Letter from The Zenith Carburetter Co. Ltd. discussing modifications and material challenges for two sample petrol filters.
View original record X3700 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE," LONDON. Code: A.B.C. 5th. EDITION. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.…

Scan164 Page two of a letter from The Zenith Carburetter Co. Ltd. awaiting a report on good qualities.
View original record 2 THE ZENITH CARBURETTER CO., LTD. Sheet No.......... Messrs Rolls Royce Ltd., 4th July.1927. any of its good qualities. We await your report with the greatest of interest and assuring you of our very…

Scan165 Introduction of a new type of petrol filter and the cancellation of the existing ones in the carburettor float chambers.
View original record X3700 To BY. from E. c. to BJ. Hs. E3/M20.7.27. RE. PETROL FILTERS. X.3700 X.3701 X.8080 X.4160 As soon as the new type of petrol filters are introduced into the production programme, it will be…

Scan166 Letter from Zenith Carburetter Co. Ltd. requesting a test report on sample filters and 42 HK carburetters.
View original record CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: 'ZENICARBUR, PHONE,' LONDON. Code: A.B.C. 5TH EDITION. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO. LTD.…

Scan167 Modified Zenith petrol filter, its production status, weight, and potential material changes.
View original record To BY/C. from Hs/Rm. Y/S700 Hs/Rm9/LG10.8.27. ZENITH PETROL FILTER. With reference to the attached. We were supplied with a petrol filter having a modified stirrup and clip otherwise exactly the same…

Scan168 Test report on the Hele-Shaw filter detailing its failure due to choking and bursting, with a recommendation for a relief valve.
View original record To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. X4037 Hs/Rm2/LG3.10.27. HELE-SHAW FILTER. We carried out a test on this filter. It was employed as a final filter in series with a…

Scan169 Letter discussing the material composition and properties of a felt filter for use in a carburettor.
View original record COMKDR. BRIGGS. [illegible handwriting] COPY OF LETTER FROM; The Old Vicarage, Markyate, Dunstable, Bedfordshire. 27 Oct 1927. Dear Mr. Constantine, I am sending in a separate parcel a filter…

Scan170 Felt petrol filter as a solution for carburettor jet stoppage on the 20 HP model.
View original record S/W. Hs. X9037 CWB3/GM/2.11.27. PETROL FILTERS. During the recent Motor Show I became involved in a discussion on carburettors with a Mr. A. G. Ionides, whom I think you know, and this led to a…

Scan171 Ionides petrol filter sent to stores for examination.
View original record To BP. from Hs/Rn. c. to Mt. Stores. Y9037 Hs/Rn4/LG3.11.27. We are sending into the Stores :- 1 Ionides petrol filter. Will you please instruct the Stores to return this to our Sales Dept. for the…

Scan172 Comparing the performance of the Ionides and Zenith type petrol filters.
View original record To CWB. from Hs/Rm. X3700 Hs/Rm3/LG3.11.27. PETROL FILTERS. [4037] With reference to the Ionides filter. We have examined it with interest. We think that the edge filter of the Zenith type should more…

Scan173 Inquiry regarding experience with 'Auto-Clean' and 'Cuno' cleanable disc filters.
View original record ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X4037 OY4.R.11727 November 7th, 1927. Mr. E.W. Hives, Rolls Royce Ltd., Derby, England. RE: GASOLINE FILTER Dear Mr. Hives: Have you any experience with…

Scan174 Letter from Zenith Carburetter Co. Ltd. about invoicing for 10 sample filters.
View original record X3700 Hs. Roy/Dn2/EH15.11.27. We have a letter from the Zenith Carburetter Co.Ltd. with reference to 10 sample Filters sent to us on Sale or Return. They are anxious to know whether we require these…

Scan175 Notification regarding a blueprint for the Zenith Filter and Piping on the Phantom Chassis.
View original record RMC c. Hs/Rm. X4037 X3 700 BY/HEB9/M.19.11.27. PHANTOM CHASSIS. ZENITH FILTER. Kindly receive one blue print of:- F.77991 Lay-Out showing fixing for Zenith Filter & Piping. Kindly proceed in…

Scan176 Requesting blueprints and the production of a Zenith Filter and associated parts for an experimental Phantom Chassis.
View original record c. Rs/Rm. X3700 BY/HEB10/M.23.11.27. PHANTOM CHASSIS. ZENITH FILTER. Further to our memo BY/HEB9/M.19.11.27, kindly receive one blue print of each of the following:- F.77992 Fixing Plate for Zenith…

Scan177 Letter from the American office to Derby discussing the performance of Cuno, Purolator and Auto-Clean oil filters.
View original record ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. +4037 OYS.R.11.23.27 W/NS November 23rd, 1927. Mr. E.W. Hives, Rolls Royce Ltd., Derby, England. Dear Mr. Hives: RE: OIL FITTINGS SECTION 5200 I wrote…

Scan178 The trial of Auto-Clean strainers for both oil and petrol.
View original record To OY. from Hs/Rm. GY8/Rll.23.27. X9037 Hs/Rm2/LG6.12.27. AUTOKLEAN STRAINERS. We have tried the Auto-Clean strainers both for oil and petrol. We like them very much. We have taken the matter up with…

Scan179 Order of K-S Telegage liquid Capsules from Messrs. Hobson.
View original record (X4037) Roy/Ms. from Hs. Hsl/LG7.1.28. Please order for use from Messrs. Hobson :- 1 doz. boxes of K-S Telegage liquid Capsules. Hs.

Scan180 Alternative petrol filters and pipes for the 20-HP chassis.
View original record BY. c. to HS. X4037 ROY/MS12/P.13.1.28. 20-HP CHASSIS PETROL FILTER. As you are aware, we are at present fitting visible Petrol Filters which we purchase from the Zenith Company to Drawing F.55185. We…

Scan181 Extract from a letter by Messrs Benton & Stone Ltd. detailing the features and benefits of their solderless unions and patent pipe nipples.
View original record EXTRACT FROM LETTER FROM MESSRS BENTON & STONE LTD. DATED 6th January 1928:- " We would point out that the essential features of this job are the fact that solderless unions are used and the body…

Scan182 The examination of a Benton & Stone filter and a request for modifications.
View original record X 4037 To Roy. from Hs/Rn. Hs/Rm1/LG14.1.28. BENTON & STONE FILTER. X3700 We have examined this filter. We like the look of it very much. Our only objection to it is that the gap between the plates is…

Scan183 From Hs/Rn to Roy stating a preference for a glass container in reference to a letter from Messrs. Benton & Stone.
View original record X4037 To Roy. from Hs/Rn. Hs/RnL/LG23.1.28 With reference to the attached letter from Messrs. Benton & Stone. We prefer the glass container. Hs/Rn

Scan184 20-HP chassis petrol filter, comparing a sample from Benton & Stone with the existing Zenith filter.
View original record X4037 ROY C. Hs. BY/Cgh10/K. 24. 1. 28. 20-HP CHASSIS PETROL FILTER. With reference to ROY/MS12/P.13.1.28., and sample filter submitted by Benton & Stone, Hs. informs us that he is not yet satisfied…

Scan185 The delivery of a revised Enots petrol filter, with a handwritten reply.
View original record Typed: Roy. from Hs/Rn. Typed: When are we likely to get the revised Enots petrol filter please? Handwritten: X4037 Handwritten Note: They are making a new mould for the glass. expect o/y 7/10 days.…

Scan186 Proposal to incorporate a petrol filter due to contaminants found in fuel dispensed from Bowser tanks.
View original record E.W.R. C. to Ld. London. H.R.P. Derby. C.W.E. London. Hm. Derby. Hs. Derby. In this country where 90% of the petrol used passes through Bowser tanks, there is so much dirt present as well as moisture…

Scan187 Letter from Auto Klean Strainers Ltd requesting a report on a supplied lubricating strainer and confirmation of retention for invoicing.
View original record Auto Klean Strainers Limited Directors: W. R. Beldam, E. A. Beldam, C. C. Barker. Specialists in Marine & Land Straining Equipment BRITISH INVENTION. Tower House, 40, Trinity Square, London, E.C.3.…

Scan188 Letter from Benton & Stone Ltd. concerning modifications to an 'Enots' Visible Petrol Filter.
View original record COPY ----- CEM/HML ROY5/MG24.1.28 Messrs. Rolls-Royce Ltd. DERBY 28th February.1928 Dear Sirs, "Enots" Visible Petrol Filter ------------------------------- In further reference to the above matter,…

Scan189 Correspondence concerning the Benton & Stone petrol filter, its cost-effectiveness, and potential use on new 20 HP and 40/50 HP chassis.
View original record Hs/Rm from ROY. +4037 ROY20/MG29.2.28 BENTON & STONE FILTER Reverting to Hs/Rml/LG14.1.28, and Hs/Rml/LG23.1.28, Messrs. Benton & Stone have now sent in the Petrol Filter - with glass container, in…

Scan190 Instructing stores to return a Benton & Stone petrol filter to the manufacturer for a modified version.
View original record To Roy/Ms. from Hs. c. to Mt. Stores. X4037 Hs/LG2.3.28. We are sending into the Stores :- 1 Benton & Stone Petrol Filter. Will you please have this despatched to the makers as they are now supplied…

Scan191 Letter to AutoKlean Strainers Ltd. expressing satisfaction with an oil filter after a 6-month test and requesting a quotation.
View original record +4037 Hs/Rm2/LG. Expl: Dept: 6th. Mar. 1928. Messrs. The AutoKlean Strainers Ltd., Tower House, 40, Trinity Sq., London E.C.3. Dear Sirs, With reference to your letter of the 27th. ult. We are very…

Scan192 Request to place an official order for an Auto Klean Filter following a successful six-month test period.
View original record To Roy. from Hs/Rm. /4037 Hs/Rm1/LG14.3.28. had We have/an Auto Klean Filter on test for the past 6 months as you will see from the attached letter. We wish to retain this filter. Will you please…

Scan193 Request to add a note to the instruction book about cleaning the Zenith Petrol Filter every 2000 miles.
View original record To BY/NW. from Hs/Rm. X3700 Hs/RmL/LG1.5.23. X8782 Will you please insert a note in the Instruction Book to the effect that the Zenith Petrol Filter must be cleaned every 2000 miles. If this is not…

Scan194 Letter to Benton & Stone Ltd. regarding the development and testing of a Zenith petrol filter.
View original record +4037 Exptl: Dept: Hs/AmL/LG. 16th. May 1928 Messrs. Benton & Stone Ltd., Birmingham. Dear Sirs, For the attention of E. Milner Esq. We attach herewith a blueprint of the Zenith Petrol Filter as…

Scan195 The advantages of the Zenith filter, which has been standardised on the 20 HP model.
View original record To B.J. from Hs. V3700 Hsl/LG17.5.28. ZENITH FILTER. We attach herewith photographs which illustrate the advantage of the Zenith filter over the present standard. The Zenith filter has been…

Scan196 Letter from Benton & Stone Ltd. regarding experiments to develop a Petrol Filter based on an interview and blueprints provided.
View original record X4037 Benton & Stone LIMITED ESTABLISHED 1814 ENOTS REGISTERED TELEGRAPHIC ADDRESS: ENOTS BIRMINGHAM TELEPHONE: 7442 CENTRAL (PRIVATE BRANCH EXCHANGE) A. B. C. CODE USED DIRECTORS: HERBERT STONE HARRY…

Scan197 Letter from Zenith Carburetter Co. Ltd. regarding complaints of breakages on glass petrol filters.
View original record CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: 'ZENICARBUR, PHONE,' LONDON. Code: A.B.C. 5TH Edition. Telephones MUSEUM 9106-9. 77967 THE ZENITH CARBURETTER CO.…

Scan198 Letter from Zenith Carburetter Co. discussing the issue of bursting glass bowls and potential solutions.
View original record .THE ZENITH CARBURETTER CO., Sheet No. 2. LIMITED. Messrs. Rolls-Royce Ltd. 17th May 1928 immediately in cold water without any sign of fracture or crack. It is also the most expensive type of glass.…

Scan199 Letter from Zenith Carburetter Co. regarding failures of glass bowls and the introduction of a new 'hard flint' glass.
View original record THE ZENITH CARBURETTER CO., LIMITED, Sheet No. 3. Messrs. Rolls-Royce Ltd. 17th May 1928 and not liable to cause breakage. The fact of your getting three failures in a comparatively short time we…

Scan200 Letter from Zenith Carburetter Co. regarding the supply of glass bowls and an offer to exchange them for brass bowls.
View original record THE ZENITH CARBURETTER CO., Sheet No. 4. LIMITED, Messrs. Rolls-Royce Ltd. 17th May 1928 if you can suggest any further means that we can adopt we shall be extremely grateful to you. We are of course…

Scan201 Standardisation of chassis parts, specifically the Zenith Filter.
View original record RR 755 REVISED (10H) (DE649 9-12-26) BM. 2/1187. X3700 COMPLETED 18.5.28 STANDARDISATION of CHASSIS PARTS. Date 23.3.28 Description of Parts. ZENITH FILTER. Origin. To prevent jets becoming choked…

Scan202 Standardisation document for a new chassis part detailing the first chassis fitment, test date and costs.
View original record STANDARDISATION CHASSIS PARTS (1) The number of the first chassis on which the new part will be fitted. G-2-B series. (2) Date when the chassis will be handed to test. 12.11.28. (3) Cost of scrapped…

Scan203 The breakage of Zenith petrol filter glasses, finding the response unsatisfactory and suggesting a switch to metal containers.
View original record HS. X3700 BY4/G.21.5.28. 77967 ZENITH PETROL FILTER. I attach hereto a reply to my letter which I wrote in connection with the breakage of the three petrol filter glasses on chassis in service. I…

Scan204 Experimental order request for a Zenith Petrol Filter with a metal cover and two spare metal covers.
View original record X3700 To ROY. from Hs/An. Hs/Rm3/LG23.5.28. Will you please order for us experimentally a Zenith Petrol Filter fitted with the metal cover instead of the glass and 2 spare metal covers. Hs/An.

Scan205 Letter from Zenith Carburetter Co. regarding a defect in their petrol filters.
View original record Copy of letter from:- The Zenith Carburetter Co.Limited., 40/42 Newman Street, LONDON.W.1. 2nd June 1928. Messrs. Rolls-Royce Ltd., DERBY. Dear Sirs, Ref. ROY/JT15/HP. We are in receipt of your letter…

Scan206 Works complaint about Zenith petrol filters where the glass container does not fit correctly.
View original record BM. c. to Hs. ✓ c. to Mx. c. to S/B.P. [STAMP: JUN 1928] X3700 ROY/JT3/HP4.6.28. F.55185 Zenith Petrol Filters. Attached hereto is makers reply to Works complaint with regard to filters in which the…

Scan207 Faults with Zenith Petrol Filters, including tight-fitting glasses and non-concentric stirrups.
View original record Hs. a Hs from Mx. X3700 Mx's Dept, Mx Absent. Mx/HS1/T5.6.28. re F55185 Zenith Petrol Filters We have noted the remarks of the Zenith Carburetter Co. in their letter of the 2nd inst. attached to your…

Scan208 Confirming a previous communication about an incorrect charge for six filters from Zenith Carburetter Co. Ltd.
View original record HS Roy 43700 G/WFH/CA.13/HO. 116.28. We confirm our memo of the 14th ult. reference G/WFH/CA3/DS.14.5.28. wherein we informed you that the Zenith Carburetter Co. Ltd had made a charge of 11/6d each…

Scan209 Confirming that payment is required for filters as no agreement for free supply was found.
View original record To G/WFH. from Hs/Rm. Hs/Rm3/LG12. 6.28. X3700 With reference to G/WFH/CA.13/HOLL.6.28. We have had these filters. We can find no agreement as to there being supplied free of charge. We therefore…

Scan210 Issues with cracked and chipped glasses on Zenith Petrol Filters due to being too tight in the housing.
View original record Ho. X3700 from Mx. Mx7/T13.6.28. re F55185 Zenith Petrol Filters Further to the second and third paragraphs of our memo Mx/HS1/T5.6.28, which matter the Zenith Carburetter Co. dealt with in their…

Scan211 Purchase of two Zenith petrol filters and the subsequent invoice.
View original record X3700 Roy. from Hs/Rn. Hs/Rn2/LG21.6.28. With reference to your note re. the price of a Zenith petrol filter. I have purchased 2 of these from the Firm and should be obliged if you would pass the…

Scan212 Blueprint for a flexible magneto drive for the F Type Engine.
View original record To R. from Rg. c. BJ. By. Hs. X4037. Rgl/LW.22. 6. 28 F. Type Engine - Magneto Drive I am sending you herewith blue print of DES.903 showing a flexible magneto drive. This was drawn with the Simms…

Scan213 Returning an Enots petrol filter to its makers for examination during a redesign.
View original record To Roy. from Hs/Rm. c. to Mt. Stores. X.4037 Hs/Rml/LG25.6.28. ENOTS PETROL FILTER. We are sending into the Stores : 1 Enots petrol filter for return to the makers. We attach a copy of our report on…

Scan214 The failure and subsequent modification of an Enots petrol filter fitted to car 12-EX.
View original record Hs/GWH2/LG25.6.28. RE. ENOTS PETROL FILTER. This filter which has been fitted to 12-EX was a failure whilst the car was in France. It became choked up with fine sand and would not allow sufficient…

Scan215 Two broken Zenith petrol filter tumblers found on new 20-HP chassis.
View original record X3700 BY c. Hs. c. CWB. EP/Thn12/H29.6.28. re. ZENITH PETROL FILTERS - BROKEN TUMBLERS - 20-HP. This confirms that we have handed to you today two further broken filter tumblers. These are both taken…

Scan216 Broken Zenith petrol filter glass bowls, identifying causes and proposing the temporary use of metal bowls during testing.
View original record To EP/Tnn. from Hs/Rn. c. to EY c. to CWB. X3700 Hs/Rn1/LG5. 7.28. BROKEN ZENITH PETROL FILTER. X3700 With reference to EP/Tsn12/H29.6.28. The only broken glass bowls we have had experimentally are…

Scan217 Return of two cracked and ill-fitting Zenith filter glasses.
View original record To Roy. From Hs/Rm. (3700) Hs/Rm2/LG10.7.28. With reference to the 2 Zenith filters we recently ordered. We are returning 2 glasses which are both cracked in the bottom and one is too tight a fit in…

Scan218 Cracked Zenith petrol filter glasses and arranging their replacement and return.
View original record N3700 c. to Mtr. c. to E/BP. c. to EWT/HS. c. to Hs/Rm. ROY/JT10/HP11.7.28. With reference to the 5 Zenith Petrol Filter Glasses found to be cracked, i.e. two ex Experimental Department ref.…

Scan219 Complaints from the Sales Department about broken Zenith petrol filters.
View original record Hs. C PY C GWB Y3700 EP's Dept. EP. is absent. Thn10/H.6.8.28. re. ZENITH PETROL FILTERS. With further reference to the above, and recent complaints from Sales Dept. of various cases in which Zenith…

Scan220 Fractures and internal stress cracks in Zenith petrol filters.
View original record To EP/Thn. from Hs/Rm. X3700 c.c. to BY. c.c. to CWB. Hs/Rm3/LG20.8.28. ZENITH PETROL FILTERS. With reference to Thn10/H16.8.28. If you will send us a sample of the fractures of which you complain we…

Scan221 Requesting the return of three defective Zenith Petrol Filter Tumblers to the manufacturer for replacement.
View original record To Roy/Ms. from Hs/Rm. c. to Mt. Stobes. X3700 Hs/Rm4/LG23.8.28. We are sending into the Stores :- 3 Zenith Petrol Filter Tumblers. Will you please have these returned to the makers for replacement.…

Scan222 Letter to The Zenith Carb. Co. Ltd. regarding defective petrol filter tumblers and requesting a meeting.
View original record Y-3700 Expl: Dept: Hs/Rn2/LG. 23rd. Aug. 1928. Messrs. The Zenith Carb. Co.Ltd., 40-42 Newman Street, London W.1. Dear Sirs, We are returning to you under separate cover 3 Magnatex of your Petrol…

Scan223 Letter from Zenith Carburetter Co. Ltd. regarding the return of broken Pyrex Glass Filter Bowls.
View original record Handwritten note top: x3700 RM noted B/J should will think we can certainly claim this part of any allowance By. Handwritten note left: HSRM Stamp: CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK…

Scan224 Feedback on an experimental petrol filter, suggesting design modifications to improve petrol flow.
View original record +4037 Expl: Dept: Hs/Rn5/LG. 27th. Aug. 1928. Messrs. Benton & Stone Ltd. Bracebridge Street, Birmingham. Dear Sirs, Your improved petrol filter has been running for some considerable time on our…

Scan225 Letter from Benton & Stone Ltd regarding modifications and samples of an improved petrol filter.
View original record X3700 Benton & Stone LIMITED ESTABLISHED 1814 [LOGO] ENOTS REGISTERED OUR REF. CEM/HML. YOUR REF. Hs/Rm5/LG. Messrs. Rolls-Royce Ltd., DERBY. 30th. August 1928. Dear Sirs, Improved Petrol Filter. We…

Scan226 Letter to Messrs. Penton & Stone discussing filter modifications, including the use of a duralumin bowl to prevent breakage.
View original record X4037 Expl; Dept; 31st. Aug. 1928. Messrs. Penton & Stone, Bracebridge Street, Birmingham. Dear Sirs, We thank you for your letter of the 30th.inst. We appreciate your endeavour to lighten the filter…

Scan227 Letter from a supplier discussing the manufacturing process for a duralumin bowl for special petrol filters.
View original record Benton & Stone LIMITED ESTABLISHED 1814 TELEGRAPHIC ADDRESS ENOTS BIRMINGHAM TELEPHONE: 7442 CENTRAL (PRIVATE BRANCH EXCHANGE) A. B. C. CODE USED DIRECTORS HERBERT STONE HARRY O. ATKINSON CHARLES N.…

Scan228 Letter from Zenith Carburetter Co. Ltd. regarding the supply of new flint glasses for petrol filters.
View original record X3200 CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE". LONDON. Code: A.B.C. 5th Edition. Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO.…

Scan229 Letter from The Zenith Carburetter Co. regarding patented filtering elements, page 2.
View original record 2. THE ZENITH CARBURETTER CO., LIMITED. Sheet No................. Messrs. Rolls-Royce Ltd. 4th September 1928. patented type of filtering elements, or could design a filter to suit your engine, should…

Scan230 Blueprint of an oil filter assembly.
View original record OIL FILTER (ASSEMBLY) USED FOR:- DAIMLER WORK TO DIMENSIONS ONLY THIS DRAWING MUST NOT BE SCALED. TYPE MK IV MATERIAL: SPECN: LENGTH: PER 100 WEIGHT THE ZENITH CARBURETTER Co: LTD., 40-44, NEWMAN…

Scan231 Very faint blueprint of a component, stamped by Zenith Carburetter Co. Ltd.
View original record ZENITH CARBURETTER CO. LTD. LONDON, W.1. ISSUED FROM DRAWING OFFICE 4 SEP 1928. Other text on the blueprint, including in the title block, is too faint to be legible, although the number H72 is…

Scan232 Letter from Benton & Stone enclosing a sample of an aluminium sump for a petrol filter for approval.
View original record Benton & Stone LTD. ESTABLISHED 1814 TRADE MARK ENOTS REGISTERED Y4037 TELEGRAPHIC ADDRESS ENOTS . BIRMINGHAM TELEPHONE: 7442 CENTRAL [PRIVATE BRANCH EXCHANGE] A B C CODE USED DIRECTORS: HERBERT STONE…

Scan233 Correspondence providing feedback and test results for a new filter design, with suggestions for improvements.
View original record +4037 21st. Sept. 1928. Hs/RmS/LG. Messrs. Benton & Stone Ltd., Bracebridge Street, XXX Birmingham. Dear Sirs, We have received your latest filter and have had it on test for a month or so. We are…

Scan234 Letter from Benton & Stone Ltd. discussing feedback on a filter test and an aluminium sump.
View original record X9037 Benton & Stone LIMITED ESTABLISHED 1814 ENOTS TRADE MARK REGISTERED OUR REF. CSM/BML. YOUR REF. Hs/Rn8/LG. Messrs. Rolls-Royce Ltd., DERBY. TELEGRAPHIC ADDRESS: ENOTS BIRMINGHAM TELEPHONE:…

Scan235 Improvements to the autovac tank and Zenith petrol filter based on observations of a Bentley chassis.
View original record S/W. Hs. Copy to:- By. EP. X3700 CWB8/GM/4.10.28. AUTOVAC AND ZENITH PETROL FILTER. I recently saw one of the latest Bentley six cylinder chassis at Messrs. Barker's and noticed that the autovac tank…

Scan236 Letter to Benton & Stone Ltd. requesting larger diameter filter plates and a sample of a light aluminium bowl.
View original record X.9037 Hs/Rm3/LG. Expl: Dept: 5th. Oct. 1928. Messrs. Benton & Stone Ltd., Bracebridge Street, Birmingham. Dear Sirs, For the attention of E. Milner Esq., We have now proved that we definitely require…

Scan237 Standardising a lighter aluminium pressing for the Zenith petrol filter bowl to replace the current heavy metal version.
View original record X3700 To CWB. from Hs/Rn. c. to BY. c. to EP. Hs/Rn2/L56.10.28. AUTOVAC AND ZENITH PETROL FILTER. With reference to CWB8/CH4.10.28. We have had metal bowls from Zeniths for a long time. We dislike…

Scan238 Letter from Benton & Stone Ltd. regarding delays and modifications to petrol filters.
View original record X4037 Benton & Stone LIMITED ESTABLISHED 1814 TRADE ENOTS MARK REGISTERED TELEGRAPHIC ADDRESS ENOTS BIRMINGHAM TELEPHONE: 7442 CENTRAL (PRIVATE BRANCH EXCHANGE) A B C Code Used DIRECTORS: HERBERT…

Scan239 Alternative materials for Zenith filter covers, proposing a new lighter material.
View original record Hs. X 4037. BY/Cgh3/G.10.10.28. re ZENITH FILTERS. ----------------- At our request the Order Office have submitted to the Zenith Carburetter Co. a drawing showing the covers for the above filters…

Scan240 Letter to Messrs. Benton & Stone regarding a request for a modified filter due to unforeseen delays.
View original record +4037 Expl: Dept: Hs/Rm3/LG. 16th. Oct. 1928. Messrs. Benton & Stone, Bracebridge Street, Birmingham. Dear Sirs, For the attention of E. Milner Esq. inst. ref. CEM/ECH. We thank you for your letter of…

Scan241 Letter from Benton & Stone Ltd. confirming that tooling for modified petrol filters is progressing well and a sample will be available shortly.
View original record BENTON & STONE LIMITED ESTABLISHED 1814 TRADE ENOTS MARK REGISTERED OUR REF CSM/HML. YOUR REF Hs/Rm3/LG. For the attention of W.A. Robotham Esq., Messrs. Rolls-Royce Ltd., DERBY. TELEGRAPHIC ADDRESS:…

Scan242 Testing of various fuel feed filters and their respective advantages and disadvantages.
View original record OY3.R.10.19.28 X4037 October 19th, 1928. TO: Mr. Beaver cc - Mr. Hives - England Mr. Nadin Mr. Robotham " " Mr. Caswell X3700 FROM: Mr. Olley RE FUEL FEED - SECTION 7140 We have been working for some…

Scan243 Analysis of European and American Zenith Gravity Filters, noting their performance and disadvantages.
View original record OY3.R.10.19.28 October 19th, 1928. C. European and American Zenith Gravity Filters. Do not appear to air lock even when there are loops in the fuel line. Appear equally good. Disadvantage is the…

Scan244 Testing and comparison of different fuel feed disc-filters.
View original record OY3.R.10.19.28 x3700 October 19th, 1928. TO: Mr. Beaver Mr. Nadin Mr. Caswell cc - Mr. Hives - England Mr. Robotham " FROM: Mr. Olley +4037 RE FUEL FEED - SECTION 7140 We have been working for some…

Scan245 Technical note on the performance and disadvantages of European and American Zenith Gravity Filters.
View original record OY3.R.10.19.28 October 19th, 1928. C. European and American Zenith Gravity Filters. Do not appear to air lock even when there are loops in the fuel line. Appear equally good. Disadvantage is the…

Scan246 Letter to Messrs. Benton & Stone Ltd. regarding a petrol filter sample and requesting more for testing.
View original record X9037 Expl: Dept: Hs/Rm4/LG. 27th. Oct. 1928. Messrs. Benton & Stone Ltd., Bracebridge Street, Birmingham. Dear Sirs, For the attention of E. Milner Esq. We thank you for the petrol filter duly…

Scan247 Request for two more modified Benton & Stone petrol filters for testing on experimental cars.
View original record To ROY. from Hs/Rm. 4037 Hs/Rm5/LG27.10.28. BENTON & STONE PETROL FILTER. As you know, we have been experimenting with these filters. Messrs. Benton & Stone have recently completed a filter which…

Scan248 Letter from Benton & Stone Ltd. regarding the development and supply of experimental petrol filters.
View original record 4037. Benton & Stone LTD ESTABLISHED 1814 LIMITED TRADE ENOTS MARK REGISTERED OUR REF. CBM/HML. YOUR REF. Es/Rm4/LG. TELEGRAPHIC ADDRESS ENOTS - BIRMINGHAM TELEPHONE: 7442-CENTRAL (PRIVATE BRANCH…

Scan249 Recurring issues with leaking or breaking glass on Zenith filters.
View original record BY. c. Hs. c. OWD. +3700 EP/9/H29.10.28. Re. ZENITH FILTER BREAKAGES. We still continue to have trouble with the above leaking or the glass breaking when the chassis are on test. We have recently had…

Scan250 Letter to Messrs. Benton & Stone confirming stirrups will be sent.
View original record +4037. Expl: Dept: Hs/Rm2/LG. 30th. Oct. 1928. Messrs. Benton & Stone, Bracebridge Street, Birmingham. Dear Sirs, For the attention of E.Milner Esq., With reference to your letter of the 29th.inst. We…

Scan251 The breakage of Zenith filters and replacing the glass covers with metal ones.
View original record PP. C. Hs. C. GWB. X3700 BY/Cgh8/K. 30. 10. 28. RE ZENITH FILTER BREAKAGES. With reference to EP/9/H29 10.28., we have for some considerable time been urging the Zenith people to supply us with metal…

Scan252 Breakage of Zenith filters and the urgent need for spare glass and a permanent solution.
View original record By. Copy to:- JLE. Hs. Hs. x3700 CWBS/CH/30.10.28. ZENITH FILTER BREAKAGES. With reference to ZP9/H29.10.28 on the above subject, I have discussed the question of the provision of a spare glass until…

Scan253 Supply of spare glass for Zenith filters and a proposed new metal cover.
View original record W/S (CNBY). X3700 c. Hs. c. H.E. ---------- BY/Cgh15/G.31.10.28. ZENITH FILTERS. ---------- With reference to CWB9/GM/30.10.28. we are arranging for a spare glass to be supplied with each chassis,…

Scan254 Sending a sample of the latest standardised type Enots Petrol Filter.
View original record To R. To DA. } From Hs/Rn. c. to E. X4037- Hs/Rm5/LGG.11.28. We are sending you a sample of the latest type Enots Petrol Filter that we have standardised. Hs/Rn.

Scan255 Providing feedback on the design of an Enots petrol filter sample.
View original record Hs. BY. from R. c. to BJ. X.4037 R1/M9.19.11.28. ENOTS PETROL FILTER. Regarding the above, sample of which you sent us, the weight is excessive and the bolting is wrong, otherwise it is a very nice…

Scan256 Internal request to order two dozen cork washers for a petrol filter from Messrs. Benton & Stone.
View original record +4037 ROY. from Hs/Rn. Hs/Rm3/LG14.11.28. Will you please order for us from Messrs. Benton & Stone : 2 doz. cork washers to suit the latest type petrol filter - three of which they have recently sent…

Scan257 Investigation into petrol supply failures on the Phantom model caused by air locks from fuel gassing and the subsequent solution.
View original record Hs/GWHL/LG16.11.28. PHANTOM - FAILURE OF PETROL SUPPLY. We have, since fitting the Zenith and Enot's petrol filters in conjunction with the cast dash, had failures of the petrol supply at varying…

Scan258 Resolving air lock issues and petrol supply failures from the autovac tank.
View original record contd :- -2- In addition to overcoming this trouble it has the advantage of overcoming another. We have found that when the filter cover is removed for cleaning purposes and replaced there has always…

Scan259 Blueprint detailing a modification to a petrol supply system, increasing a release hole.
View original record INCREASED RELEASE HOLE TO .137 AIR RELEASE 3/16" PETROL SUPPLY 5/16" TO CARB. ROLLS-ROYCE LIMITED PRINT ROOM, 19 NOV 1928 DERBY.

Scan260 Modifications to address petrol supply failures caused by exhaust heat.
View original record To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to OY. BY. X3700 Hsl/LG17.11.28. FAILURES OF PETROL SUPPLY. X8510 It will be necessary for us to make the proposed modification at once as the cars are on…

Scan261 Fitment of Enots petrol filters on 40/50 chassis and the ventilation requirements for cars with cast dashboards.
View original record BY. from Hs/Rm. X4037 Hs/Rm4/LG21.11.28. PETROL FILTERS. X4037 X3700 With reference to the Enots petrol filter which we are about to fit on 40/50 chassis. You will appreciate from our memos, that no…

Scan262 Fitting Enots petrol filters to 40/50 chassis and reusing Zenith filters on 20 HP cars.
View original record BY. from Hs/Rn. X3700 Hs/Rn4/LG21.11.28. PETROL FILTERS. X9037 With reference to the Enots petrol filter which we are about to fit on 40/50 chassis. You will appreciate from our memos, that no car can…

Scan263 The fitting of a drain tap on the water pumps for Fairey machines.
View original record Hs. EV X4037 EP3/H23.11.28. MR. Archer has raised the question of the drain tap on the water pumps on the Faireys machines. We discussed this matter with Hs. and as a result of this discussion…

Scan264 Invoice and delivery discrepancy for special filters from Benton & Stone, Ltd.
View original record Hs/Rn. L4037. G/Gn22/CA/ES.28.11.28. We have now received from Benton & Stone, Ltd. their invoice for 3 special Filters recently requisitioned by you. Although the order concerned No. 830230 states…

Scan265 Confirming the urgent dispatch of a third filter via special express parcel post.
View original record X4037 To G/Gn. from Hs/Rn. Hs/Rn4/LG29.11.28. The third filter mentioned in your G/Gn22/CA/ES28.11.28. was sent by special express parcel post addressed to myself as it was urgently required. Hs/Rn.

Scan266 Standardisation of an Enots petrol filter to replace the existing Zenith model.
View original record RR 755 REVISED (10H) (D.C. 777-29-2-28) M C.LTP STANDARDISATION of CHASSIS PARTS. Date 11128 X No. 4037 Description of Parts. ENOTS PETROL FILTER. Origin. To obtain a better filter than the present…

Scan267 Form for the standardisation of chassis parts.
View original record STANDARDISATION of CHASSIS PARTS STORE LETTER REF: LFC/2608 Item No. X The number of the chassis on which the new part will be fitted. When available. Date when chassis will be handed to test. Nil.…

Scan268 Inquiry regarding the frequent choking of the petrol filter on Chassis No. 14.G.4.
View original record X3700 S/W. Hs. Sg3/W/21.1.1929. Re: Chassis No. 14.G.4. The 10,000 mile reports make frequent mention of the choking of the petrol filter. I should be glad to know whether you consider this serious,…

Scan269 Order for three Enots petrol filters with glass bowls and drawn aluminium bowls as extras.
View original record To ROY. from Hs/Rm. Hs/Rm4/LG22.1.29. X4037 Will you please order :- 3 Enots petrol filters similar to the last type that we had. These filters should be supplied with glass bowls and the drawn…

Scan270 On petrol filter issues in the 20 HP car, and the decision to standardise on the Enots filter for its greater capacity.
View original record Sg. from Hs/Rn. X4037 Hs/RnS/LG22.1.29. PETROL FILTERS. X4037 X3700 One reason for the trouble experienced with the filter on the 20 HP. is that the petrol we are getting on our 10,000 miles tests in…

Scan271 Petrol filter problems on the 20 HP model and the standardisation of the Enots filter.
View original record Sg. from Hs/Rn. X3700 Hs/Rn3/LG22.1.29. PETROL FILTERS. X4037 One reason for the trouble experienced with the filter on the 20 HP. is that the petrol we are getting on our 10,000 miles tests in France…

Scan272 Micro-examination report comparing the plate gaps of Zenith and Enots petrol filters.
View original record Micro-examination Report. X4037 M640. Hs/Rm. H12/EA23.1.29. Laboratory. Re Petrol Filters. We have measured the gaps between ten pairs of plates in each of the filters submitted. The results are given…

Scan273 Clarifying that a previous remark on 40/50 HP petrol filters was based on incorrect information and noting the trouble is attributed to dirty petrol.
View original record V3700 S/W. Hs. Sg1/M/23.1.29. Re: Petrol Filters. Thanks for Hs/Rm3/LG22.1.29. and for the information contained therein. With regard to the 40/50 HP. filter, the remark made in my memo on this…

Scan274 Letter reporting on the testing of petrol filters, suggesting improvements to the filtering element's capacity and plate gaps.
View original record x4037 HS/Rml/T. 24th January, 1929. Messrs. Benton & Stone, Bracebridge Street, BIRMINGHAM. For the attention of E. Milner, Esq. Dear Sirs, Petrol Filters. -------------- We have now carried out some…

Scan275 Letter to Messrs. Benton & Stone discussing filter element specifications, comparing brass and duralumin plates.
View original record Messrs. Benton & Stone. (2) Contd. -------------- Our experience seems to shew that what we require is a gap of .0025 with a limit of t.005" in gap variation. We presume you find it necessary to make…

Scan276 Micro-examination report detailing measurements of gaps in a Zenith petrol filter.
View original record Micro-Examination Report. X3700 Hs/Rm. H12/EA24.1.29. M641. Laboratory. Re Zenith Petrol Filter. (Further to our report No. M640.). We have measured the second Zenith filter submitted yesterday, with…

Scan277 Proposal to order Enots petrol filters for the J.2 series and 20 HP chassis.
View original record HS. XA037 BY/Cgh6/G.25.1.29. re ENOTS PETROL FILTERS. ------------------------- We are proposing to order the above for J.2 series (40/50 HP. chassis) and for the 20 HP. chassis from the 51st. in 'O'…

Scan278 The change of material for the Enots petrol filter element from duralumin to brass.
View original record To BY. from Hs/Rm. V3780 Hs/RmL/LG26.1.29. ENOTS PETROL FILTER. Y4037 We are asking Messrs. Benton & Stone to supply brass plates in their filtering element instead of duralumin because the brass…

Scan279 Changing the material for the Enots petrol filter from duralumin to brass plates.
View original record To BY. from Hs/Rm. X4037 Hs/Rml/LG26.1.29. ENOTS PETROL FILTER. X4037 √3700 We are asking Messrs. Benton & Stone to supply brass plates in their filtering element instead of duralumin because the…

Scan280 Letter from Benton & Stone Ltd. regarding the production of petrol filters and duralumin filter plates.
View original record X4037 Benton & Stone ESTABLISHED 1814 LIMITED TELEGRAPHIC ADDRESS ENOTS BIRMINGHAM TELEPHONE: 7442 CENTRAL (PRIVATE BRANCH EXCHANGE) A B C CODE USED DIRECTORS: HERBERT STONE, FRANK S. ATKINSON CHARLES…

Scan281 Ordering of Enots petrol filters and awaiting further details on the filtering element.
View original record Hs. --- x4037 BY/Cgh2/G.14.2.29. ENOTS PETROL FILTERS. ------------------- With reference to Hs/Rml/LG.26.1.29. we have placed on order the above filters for 20 HP. chassis from 51st in 'O' series and…

Scan282 Letter from Guthrie & Co. Chemical Engineers proposing a new filtration material for petrol, oil, air, and diesel oil.
View original record PRINCIPAL: W. HAYHURST PLEASE FILE +4037 RECEIVED 27 FEB 1929 GUTHRIE & Co. CHEMICAL ENGINEERS. Goods to DOWRY WORKS, ACCRINGTON. TELEGRAMS: QUARTZ, ACCRINGTON. CODE A.B.C. 5TH EDITION. TELEPHONES:…

Scan283 Page 2 of a letter from Guthrie & Co. promoting a new filter for petrol, oil, and air.
View original record From GUTHRIE & CO., Accrington. SHEET No. 2 26/2/ 192 9. TO Messrs. Rolls-Royce Ltd. The size of the long tube indicates to you the perfection of the physical internal construction of the filtering…

Scan284 Blueprint showing the design and dimensions for a petrol and benzine filter.
View original record PETROL & BENZINE-FILTER. Full Size. Part Identifiers: a, b, c, d, e, f, g, h Dimensions: 40, 26, 6, 20, 44, 35, 1.5, 90, 2.5, 2, 5 dia, 10, R.R, E.B, 25, R-5, 62, 55, 18, R-10, 38, 32, 15, 89, 96, 7,…

Scan285 Letter to Messrs. Benton & Stone Ltd. regarding a modified filter element required for testing and standardisation.
View original record +4037. Hs/Rm2/LG. Expl: Dept: 28th. Feb. 1929. Messrs. Benton & Stone Ltd., Bracebridge Street, Birmingham. Dear Sirs, For the attention of E. Milner Esq. We are anxiously awaiting the modified filter…

Scan286 Letter from Benton & Stone Ltd. regarding production issues and the upcoming despatch of modified filter elements.
View original record +4037 Benton & Stone LIMITED ESTABLISHED 1814 ENOTS TRADE MARK REGISTERED OUR REF. CEM/HML. YOUR REF. Hs/Rm2/LG. TELEGRAPHIC ADDRESS ENOTS BIRMINGHAM TELEPHONE 7442 CENTRAL (PRIVATE BRANCH EXCHANGE) A…

Scan287 Instruction to fit two Enots petrol filters to cars 20-EX and 22-EX.
View original record To RHC. from Hs/Rm. X4037. Hs/Rm1/LG8.3.29. Will you please fit the two Enots petrol filters handed to you today to 20-EX and 22-EX cars which are about to go to France. Hs/Rm.

Scan288 Letter to Benton & Stone Ltd. regarding corroded duralumin filter elements from fuel tests, suggesting a reversion to brass plates.
View original record 49037 c. to BY. Exptl: Dept: Hs/Rm5/LG. 15th. Mar. 1929. Messrs. Benton & Stone Ltd., Bracebridge Street, Birmingham. Dear Sirs, For the attention of E. Milner Esq. We are sending you herewith some of…

Scan289 Letter from Benton & Stone Ltd. discussing the testing of dural filter elements and the switch to brass plates for production.
View original record Y 4037 Benton & Stone LIMITED Established 1914 TELEGRAPHIC ADDRESS: ENOTS BIRMINGHAM TELEPHONE: 7442 - CENTRAL (PRIVATE BRANCH EXCHANGE) A. B. C. CODE USED DIRECTORS: HERBERT STONE HARRY G. ATKINSON…

Scan290 Test report on the performance and restriction of different types of Enot's petrol filters.
View original record For Files ENOT'S PETROL FILTERS TESTED UNDER 6FT HEAD OF 80/20 PETROL. DIRECT DELIVERY THROUGH PIPE. 330.5 Pts/HR. DELIVERY THROUGH POROUS POT FILTER. 277 Pts/HR. RESTRICTION 16.1% DELIVERY THROUGH…

Scan291 Letter to supplier Benton & Stone Ltd. regarding performance issues and requested improvements for filter element packs.
View original record +4037 Expl: Dept: Hs/Rm4/LG. 9th. April 1929. Messrs. Benton & Stone Ltd., Bracebridge Stret, Birmingham. Dear Sirs, For the attention of E.Milner Esq. With reference to your letter of the 18th.ult.…

Scan292 Letter from Benton & Stone Ltd. concerning the production and testing of petrol filters.
View original record +4037 Benton & Stone ESTABLISHED 1814 LIMITED TELEGRAPHIC ADDRESS ENOTS, BIRMINGHAM TELEPHONE: 7442 CENTRAL (PRIVATE BRANCH EXCHANGE) A B C. CODE USED DIRECTORS: HERBERT STONE, HARRY D. ATKINSON…

Scan293 On laboratory corrosion tests of duralumin filter plates, recommending the use of brass packs for the first batch of filters.
View original record +4637 To BY. from Hs/Rp. c. to Roy. Hs/Rm3/LGL1.4.29. BENTON & STONES FILTER. By means of an intensive laboratory test in Benzol and water, we succeeded in making the duralumin filter plates corrode.…

Scan294 Letter to Messrs. Benton & Stone Ltd. clarifying that filter packs should continue to be supplied in brass, not duralumin.
View original record 79037 Hs/Rm2/LG. Expl: Dept: 11th. April 1929. Messrs. Benton & Stone Ltd., Bracebridge Street, Birmingham. Dear Sirs, For the attention of E. Milner Esq. We think that we must have been ambiguous in…

Scan295 Oil filter, forwarding a letter for discussion and comments.
View original record [Handwritten] HS [Handwritten] x 4037 [Typed] To BF from Sg. [Struck Through] [Typed] To Hs. from Sg. [Typed] RRAI - Oil Filter. [Typed] Sg8/F16.4.29 [Typed] Enclosed please find copy of letter from…

Scan296 Letter from the American branch to the English branch regarding the development of oil filters and a request for new designs.
View original record OY11 April 5th, 1929. Mr. A. F. Sidgreaves, Rolls Royce Limited, London, England. Dear Mr. Sidgreaves: RE OIL FILTER - SECTION 5200 I notice from Experimental D.O. reports that work is in hand to…

Scan297 Clarifying the terminology of oil 'filters' versus 'strainers' and discussing various oil cleaning technologies.
View original record Sg. X9037 BY8/G.17.4.29. c. Hs. OIL FILTER. Referring to Sg8/E16.4.29. and OY/11 of April 5th OY. has been misled by our use of the term 'filter'. We have always called our oil strainers 'filters' -…

Scan298 Correcting a previous postscript regarding oil filter manufacturers, 'Auto Klean' and 'Streamline'.
View original record x9037 BG. c, Hs. BY11/N.19.4.29. OIL FILTER. Further to our memo BY8/G.17.4.29, I find the Post Script is not correct, and I should have said that the 'Auto Klean' is marketed in this Country by:-…

Scan299 Advantages and disadvantages of the Auto Klean oil filter.
View original record To Sg. from Hs/Rm. c. to BY. Hs/Rm3/LG22.4.29. X9037 ? OIL FILTERS. X9037 ? With reference to BY11/N19.4.29. and OY's note on the same subject. We have had considerable experimental experience with…

Scan300 The merits of externally-cleanable oil filters, referencing Zenith, Enots and Auto Klean types.
View original record contd :- -2- the Zenith or the Enots. For an oil sump however where the filter is inaccessible it would appear to be a marked asset to be able to restore the filter to 90% cleanliness by turning the…

Scan301 Performance, advantages and disadvantages of the Auto Klean filter.
View original record To Sg. from Hs/Rm. c. to BY. X4037 Hs/Rm3/LG22.4.29. OIL FILTERS. X4037 With reference to BY11/N19.4.29. and OY's note on the same subject. We have had considerable experimental experience with the…

Scan302 Oil sump filters and the benefit of externally cleaned filters, referencing the Auto Klean filter on a Sunbeam car.
View original record contd :- -2- the Zenith or the Enots. For an oil sump however where the filter is inaccessible it would appear to be a marked asset to be able to restore the filter to 90% cleanliness by turning the…

Scan303 Comparing the Cuno and Purolator oil filters, discussing weight, materials, and cost.
View original record OY 7 A x9037 May 3rd, 1929. TO: Mr. Beaver Mr. Burton Mr. Ross FROM: Mr. Olley SH cc - Mr. Caswell Mr. Allen Mr. Bagnall Mr. Bumpston Mr. Bailey (Eng.) Mr. Hives Mr. Hopkins Mr. Fuller Mr. Knapton OIL…

Scan304 Seeking clarification on the difference between Cuno Auto-Klean and Auto-Klean oil filters.
View original record Hs X9037 To BY from Sg. To Hs. from Sg. re RRAI. Oil Filter. Section 5200 Sg2/E8.5.29 Referring to BYS/G17.4.29 and Hs/Rm3/LG22.4.29 I attach further letter from Oy. on the subject. I am not quite…

Scan305 Letter discussing the performance and testing of a Cuno Auto-Klean oil filter, with an analysis of residue collected.
View original record OY 3 April 30th, 1929. Mr. A. F. Sidgreaves, Rolls Royce Limited, London, England. cc - Mr. Bailey Mr. Hives Dear Mr. Sidgreaves: OIL FILTER - SECTION 5200 Thank you for your letter Sg6 of April 19th…

Scan306 Page two of a letter discussing the high cost of filters compared to competitors and sourcing alternatives.
View original record - 2 - At present the cost of these filters is high compared with the "Purolator" or other cloth filters and it remains for us to bring the makers to reason in this respect. We should like to supply…

Scan307 Sending a sample 'Auto Klean' lubricating oil strainer with accompanying drawings.
View original record To R. from Rg. c. Hs. By. On Sg. (crossed out) X4037 Rg1/LW.11. 5. 29 AUTO KLEAN LUBRICATING OIL STRAINERS We are sending you, under separate cover, a sample auto klean oil strainer which has been…

Scan308 The testing of Cuno Auto-Klean filters and the similarity between the American and English versions.
View original record Sg. c. Hs. X4037 BYL/G.14.5.29. Hs CUNO AUTO-KLEAN FILTER. ---------------------- Referring to Sg2/E8.5.29. and OY.3 of April 30th, there is no need to make any further comment beyond the fact that we…

Scan309 Letter to Messrs. Benton & Stone Ltd. regarding petrol starvation issues caused by Enots Petrol Filters.
View original record X4037 Hs/Rm5/AD. 7th November, 1929. Messrs. Benton & Stone Ltd. Bracebridge St. Birmingham. For the attention of Mr. Milner. Dear Sirs, Enots Petrol Filters. We have been troubled with petrol…

Scan310 Letter from Benton & Stone Ltd. regarding issues and testing of 'Enots' petrol filters.
View original record Benton & Stone Ltd. ESTABLISHED 1814 X 4027 ENOTS REGISTERED OUR REF. CEM/HML. YOUR REF. Hs/Rm5/AD. For the attention of Mr. Robotham. Messrs. Rolls-Royce Ltd., D E R B Y. 8th. November 1929.…

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