Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 135\3\        Box Selection

IdentifierEntry
scan0001 Letter to Auto-Klean Strainers, Ltd. requesting a meeting with their technical representative to discuss an oil filter.
View original record X4037 Expl. Dept. Hs/ACL.1/MJ. March 7th, 1930. Messrs. Auto-Klean Strainers, Ltd., Tower House, 40, Trinity Square, LONDON E.C.3. Dear Sirs, We are anxious to know one or two points about your…

scan0002 Letter from Birt Hudson requesting an appointment to discuss 'AUTO-KLEAN' lubricating oil strainers.
View original record x4037 BIRT HUDSON. 57 Bath Road, Wolverhampton. Messrs. Rolls Royce Ltd., D E R B Y. 10th March 1930 Dear Sirs, Ref. HS/ACLI/MJ? "Auto-Klean Strainers" I have been requested by my Principals to…

scan0003 Letter to Birt Hudson, Esq. arranging a meeting at the works.
View original record (4037) Expl. Dept. Hs/ACL.1/MJ. March 11th.1930. Birt Hudson,Esq., 57, Bath Road, WOLVERHAMPTON. Dear Sir, Thanks for your letter of the 10th.inst. If convenient to you we should be pleased to see you…

scan0004 Fifteenth design committee report discussing the Phantom car's oil filter, jellying issues, and a compression ignition unit.
View original record COPY. X4037 R. (Held up). Sg. Wor. By. E. Hs. Rg.3/LW.21.3.30. X.2924 X.4037 X.7250 X.457 X.4433 FIFTEENTH REPORT OF DESIGN COMMITTEE. Oil Filter on Phantom. The scheme for an Auto Klean filter in the…

scan0005 Letter from Benton & Stone Ltd. regarding the testing and provision of a new type of petrol filter with a porous pot element.
View original record X4037. Benton & Stone LIMITED ESTABLISHED 1814 TRADE ENOTS MARK REGISTERED OUR REF. CEM/HML. YOUR REF. For the attention of Mr. Rowbotham. TELEGRAPHIC ADDRESS: ENOTS BIRMINGHAM TELEPHONE: ASTON CROSS…

scan0006 Test report on the performance and filtering effectiveness of an 'AUTO-KLEAN' oil strainer.
View original record To. F. From RH/CHP.(Held up). c. to Sc. Sor. c. to S. E. c. to Hy. DA. 4037 "AUTO-KLEAN" OIL STRAINER. We have tested the above oil strainer to ascertain the quantity of oil it will pass for a given…

scan0007 Continued report on a strainer test, noting rapid clogging and proposing an automatic cleaning mechanism.
View original record -2- Hs/2HP.1/ALB.5.4.30.Contd. and the mixture circulated through the strainer. Three minutes running, at a pump speed of 1000 R.P.M., was sufficient to clog up the strainer; the pressure drop…

scan0008 Letter to Benton & Stone Ltd. regarding an issue with a porous body filter disintegrating.
View original record X4037 YU400 Y4037. Expl. Dept. Hs/Rn.1/MJ. April 8th.1930. Messrs. Benton & Stone Ltd., Bracebridge Street, BIRMINGHAM. Dear Sirs, For the attention of E. Milner, Esq. POROUS BODY FILTER. We have…

scan0009 Letter from Benton & Stone Ltd. regarding the disintegration of a porous body filter and a proposed modification.
View original record X4037. Benton & Stone ESTABLISHED 1814 LIMITED ENOTS TRADE MARK REGISTERED OUR REF. CEM/HML. YOUR REF. Hs/Rm/1/MJ. For the attention of Mr. Robotham. TELEGRAPHIC ADDRESS: ENOTS BIRMINGHAM TELEPHONE:…

scan0010 Letter from Birt Hudson regarding 'Auto-Klean' strainers and enclosing a catalogue for discussion.
View original record BIRT HUDSON. 57 Bath Road, Wolverhampton. 10th April 1930 Messrs. Rolls Royce Ltd., D E R B Y. Dear Sirs, For the attention of Mr. Lovesay. "Auto-Klean" Strainers In accordance with my promise I am…

scan0011 Letter from Benton & Stone Ltd. advising that a modified porous pot filter has been sent for testing.
View original record Benton & Stone LIMITED ESTABLISHED 1814 TRADE ENOTS MARK REGISTERED x4037. OUR REF. CEM/HML. YOUR REF. For the attention of Mr. Robotham. Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. 28th. April…

scan0012 Promotional leaflet for Auto-Klean Strainers, a self-cleaning straining appliance.
View original record AUTO-KLEAN STRAINERS AK REGISTERED TRADE MARK (BRITISH INVENTION) A REVOLUTIONARY STRAINING APPLIANCE (NO GAUZE OR PERFORATED METAL USED) CLEANABLE UNDER PRESSURE BY TURNING A HANDLE.

scan0013 Outlining modifications desired for the auto-klean strainer, including the gland and freewheel mechanism.
View original record X4037 By. from E. C. Sg. Wor. Hs. E4/M24.5.30. X. 4037 X. 7772 X. 7190 L.H. P.2. AUTO-KLEAN STRAINER DETAILS. We send herewith LeC.2800. shewing the modifications desired in connection with the…

scan0014 Original drawing of an Auto-Klean strainer with details of the freewheel ratchet device.
View original record X4037. By. from E. C. Sg. Wor. Hs. E1/M26.5.30. X. 4037 X. 7772 X. 7190 P.2. AUTO-KLEAN STRAINER DETAILS. Herewith please find original drawing LeC.2800, completed with full details of the freewheel…

scan0015 Letter to Percy Northey discussing Duron brake lining material and forwarding correspondence from an Engineer Admiral.
View original record X4037 77, Beaufort Mansions, Chelsea, S.W.3. WB/JS 18th July, 1930. Percy Northey Esq., Messrs. Rolls Royce Ltd., 15, Conduit Street, London, W.1. Dear P.N., I called in to see you the other day but…

scan0016 Letter from W. Pattey proposing a trial of a new oil filter from Metafilters Ltd.
View original record NAVAL & MILITARY CLUB, 94, PICCADILLY, W.1. Telephone No. GROSVENOR 2103. 8 July 30 Dear Briggs A company in which I am interested, Metafilters Ltd Belgrave Road Hounslow has got out an oil filter for…

scan0017 Remarks on an attached letter concerning a new type of filter from Engineer Admiral Rattey.
View original record x4037 PN.2/WH21.7.30. Hs...from PN. The attached letter from CWB. enclosing a letter relating to a new type of filter from Engineer Admiral Rattey R.N. will be self-explanatory. Will you please let me…

scan0018 Follow-up letter from Birt Hudson regarding an interview and correspondence about 'Auto-Klean Strainers'.
View original record BIRT HUDSON. 57 Bath Road. Wolverhampton. 21st July 1930 Messrs. Rolls Royce Ltd., D E R B Y. Dear Sirs, For the attention of Mr. Lovesey "Auto-Klean Strainers." With reference to our interview some…

scan0019 Letter to Engineer Admiral Rattey requesting a description of an oil filter.
View original record 84037. Expl. Dept. Hs.1/MJ. July 22nd, 1930. Engineer Admiral Rattey R.N., Naval & Military Club, 94, Piccadilly, LONDON. W.1. Dear Sir, Your letter of the 8th. of July to Commander Briggs has been…

scan0020 The modification of a P.2. carburetter to fit an air maze gauze screen for cars used in Australia and India.
View original record BY. FROM E. Copy to SG. Copy to Wor. Copy to Hs. X.4037 E1/M9.9.30. AIR FILTERS - Lec. 2803. X.7080. X.4037. Referring to your memo. BY/MIN17/N25830., concerning the question of fitting air filters on…

scan0021 Supply and assembly arrangement for Auto Klean Strainers.
View original record Y4037. To BY, from ROY c. to Hs. ----------------- ROY2/MG18.9.30 Auto Klean Strainers Under present arrangements it is suggested the Auto Klean details, i.e., discs, are sent us by the Auto Klean…

scan0022 On the performance of two tested Autokleen filters with spring loaded glands regarding oil leaks.
View original record (x+037). To Hs. from Hs/GWH. c.c. By. [Text is crossed out] Hs/GWH2/ADL.10.30. We have tested out two Autokleen filters with the spring loaded gland. In one case there is no improvement in the oil…

scan0023 Follow-up letter from Benton & Stone Ltd. regarding a test on a porous pot filter sample.
View original record X4037. Benton & Stone LIMITED ESTABLISHED 1814 ENOTS TRADE MARK REGISTERED OUR REF. CEM/HML. YOUR REF. TELEGRAPHIC ADDRESS: ENOTS BIRMINGHAM TELEPHONE: ASTON CROSS 1905-6 (PRIVATE BRANCH EXCHANGE) A.…

scan0024 Letter to Messrs. Benton & Stone regarding the performance and price comparison of a porous pot filter.
View original record X4037. Expl. Dept. Nov.3rd.1930. Hs/Rn.4/MJ. Messrs. Benton & Stone, Bracebridge St., BIRMINGHAM. Dear Sirs, Porous Pot Filter. Replying to your letter ref:CEM/HML. of Oct. 27th. We like the porous…

scan0025 Letter from Benton & Stone Ltd. regarding the performance and cost of a Porous Pot Filter.
View original record x4037 Benton & Stone LIMITED ESTABLISHED 1814 TELEGRAPHIC ADDRESS: ENOTS BIRMINGHAM TELEPHONE: ASTON CROSS 1905-6 (PRIVATE BRANCH EXCHANGE) A. B. C. CODE USED DIRECTORS: HERBERT STONE HARRY G.…

scan0026 Standardisation report on replacing the scroll clutch with a ratchet freewheel in the Auto Kleen Filter.
View original record RR 755 REVISED (10H) (DG 348 19-7-29) SM. 6/543. COMPLETED 8.11.30 x4034. STANDARDISATION of CHASSIS PARTS. Date 25.8.30. Description of Parts. AUTO KLEEN FILTER. SCROLL CLUTCH DEVICE REPLACED BY…

scan0027 The company's position regarding Metafilters (1929) Ltd.
View original record S/W Hs/Rm X4037. Cl8/C4.12.30. Re Metafilters (1929) Ltd. -------- A friend of LHS. writes as per the attached. Will you please let me know the position in regard to these filters. C. [STAMP] RECEIVED…

scan0028 Metafilters (1929) Ltd. seeking feedback on their oil filters under test.
View original record 3.12.1930. Metafilters (1929) Ltd. and Rolls Royce Ltd. Mr. Pickard (the Managing Director of Metafilters (1929) Ltd.) interested Rolls Royce Ltd. in the Oil Filter for Motor cars some time ago. Early…

scan0029 Blueprint of a Sump Oil Filter, showing various sections and components.
View original record METAFILTERS (1929) LTD., DRG. Nọ 4/349/, SUBJECT:- SUMP OIL FILTER, SCALE = 3/4 FULL SIZE, METAFILTER, TYPE 0.349, INLET, OUTLET, SLUDGE, SECTION ON "AA", COVER HALF SECTION THRO' "BB", BODY HALF…

scan0030 Test report on the Auto Klean Oil Filter E.81173, detailing pressure readings for the bypass system.
View original record C.O.P.Y. X4037 Rm. AUTO KLEAN OIL FILTER E.81173. 21.1.31. 24-EX. Calculated pressure of oil necessary to lift ball release valve, for by passing the oil in a case when the filter is blocked is 53.5…

scan0031 Instruction to fit a standard Enots petrol filler to car 14-EX and remove the carburetter filter.
View original record X4037. To RHC. From Hs/Lid. Hs/Lid.4/KT.6.2.31. 14-EX. Will you please arrange to fit a standard Enots petrol filler to 14-EX. whilst it is in the fitting shop, the filter in the carburetter should…

scan0032 Clearance of the spigot in the Autokleen filter, concluding no modifications are necessary.
View original record To Mx. From Hs/GWH. c. to EY. X4037. Hs/GWH.6/KT.10.2.31. RE AUTOKLEEN FILTER. We have gone into the question you raised re the clearance of the spigot supporting the vanes. To decrease the clearance…

scan0033 Standardisation of chassis parts for the Enots Petrol Filter.
View original record RR 755 (10H) (3-7-30) BM. 6/2571. X4037 COMPLETED 6.3.31. STANDARDISATION of CHASSIS PARTS. Date 14.1.31. Description of Parts. Enots Petrol Filter. Origin. To shorten petrol pipe and improve…

scan0034 Standardisation report concerning new chassis parts, including costs and fitting details.
View original record STANDARDISATION OF CHASSIS PARTS FEB 12 1931 RECEIVED The number of the first chassis on which the new part will be fitted......... Not known. Date when chassis will be handed to test........... " "…

scan0035 Telephone conversation about engine design specifications for oil flow, sump connections, and induction system.
View original record E. c. Hs. c. BY/CS. c. BY/Cgh. c. BY/SS. X5190. BY.3/G. 28.10.31. X.5190. X.5070. TELEPHONE CONVERSATION WITH VV. 27.10.31. JAPAN 111. The following information was given to me over the telephone by E…

scan0036 Dissatisfaction with filters for the Bijur lubrication system and proposing testing of alternatives.
View original record Y4037 ToRoy. From Hs/Rm. c. to Da. By. Hs/Rm.1/MJ.18.11.31. X3806. FILTERS FOR BIJUR LUBRICATION SYSTEM. We are very dissatisfied with the filters used in the Bijur drip plugs, and also to protect our…

scan0037 Promotional flyer for the 'Smith' air filter with silencer and warning whistle.
View original record LEFT PAGE: THE “SMITH” AIR FILTER WITH SILENCER & WARNING WHISTLE. PRICES. AF1 or AFN1 for motor cycles and cars up to 10 h.p., 10/- each. AF2 or AFN2 for cars up to 16 h.p., 15/- each. AF3 or AFN3…

scan0038 Descriptive document for the 'Smith' Air Filter with Silencer & Warning Whistle.
View original record THE “SMITH” AIR FILTER WITH SILENCER & WARNING WHISTLE. IT is impossible to exaggerate the importance of maintaining a perfectly clean supply of air to the carburetter intake, as grit and dust can…

scan0039 Attached letter and invoice for Smith carburetter air filters.
View original record X4037. To Roy. from Hs/Lid. Hs/Lid.6/KT.19.12.31. SMITH AIR FILTERS. Attached please find copy of a letter we have written to F.Smith & Sons, re. carburetter air filters. We are sending you this in…

scan0040 Letter to Frank Smith & Co. regarding AFN.3 type air filters, requesting an invoice and materials for further testing.
View original record Ha/Lid.7/KT. Dec. 19th, 1931. Frank Smith & Co. (Elland) Ltd., Elland, Yorks. Dear Sirs, With reference to the two AFN.3 type air filters which you kindly supplied to us for test purposes some little…

scan0041 Letter from Frank Smith & Co. confirming the preparation of 8 rings/filter pads with specified dimensions.
View original record FRANK SMITH & CO. (ELLAND) LTD. MOTOR ENGINEERS HUDDERSFIELD RD. ELLAND [Logo text 1]: THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS LTD [Logo text 2]: THE MOTOR TRADE ASSOCIATION REPAIRERS [Logo text…

scan0042 Letter from Frank Smith & Co. regarding the supply, specification, and pricing of filter pads.
View original record 84037. FRANK SMITH & CO. (ELLAND) LTD. MOTOR ENGINEERS HUDDERSFIELD RD. ELLAND [Logo Text: THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS LTD] TELEGRAMS & CABLES: SMITH, ENGINEER, ELLAND [Logo Text:…

scan0043 Letter to Frank Smith & Co. acknowledging receipt of their letter and 8 filter pads.
View original record X4037. Hs/Lid.6/KT. January 1st, 1931. Frank Smith & Co. (Elland) Ltd., Huddersfield Road, Elland, Yorks. Dear Sirs, We beg to acknowledge receipt of your letter AS/NN of 29th. Dec. and in addition of…

scan0044 Requesting a test on a sample Tecalemit Oil Cleaner and providing its pressure drop specifications.
View original record GRY X4037. Hs. from E. E.3/HP.2.3.32. re Oil Cleaner. We send you herewith sample Tecalemit Oil Cleaner, which we should be glad if you will put on test as soon as possible, as we are anxious to know…

scan0045 Test report on a 'Tecalemit' oil filter performance with Motorine 'C' oil.
View original record 84037 Rg. From HS/Bl. c. to E. Wor. c. to Ry. HS/Bl.4/MA.21. 3. 32. *TECALEMIT* OIL FILTER. Motorine "C" oil was supplied to the inlet of the filter by a gear pump controlled by a variable speed…

scan0046 Test data tables for pressure, temperature, and flow rates with a relief spring.
View original record -2- Hs/B1.4/A. 21.3.32. contd. [Table 1] | Inlet Press lb/sq.in. | Relief Delivery G.P.H. | |---|---| | | Temp 20oC | Temp 80oC | | 10 | 9.8 | 42.5 | | 15 | 15.5 | 85.5 | | 20 | 38.8 | 128 | | 25 |…

scan0047 Graph showing the performance of a 'Tecalemit' oil filter, plotting delivery through the relief valve against inlet pressure at different temperatures.
View original record "TECALEMIT" OIL FILTER. DELIVERY THRO' RELIEF VALVE IN RELATION TO INLET PRESSURE. MAIN DELIVERY PORT BLANKED. DELIVERY THROUGH RELIEF VALVE G.P.H. PRESS IN FILTER LB/□" INLET. 80°C 20°C.

scan0048 Blueprint for a Relief Valve for a Tecalemit Oil Filter.
View original record OUTLET .750 1.500 .562 SPRING. COMPRESSED LENGTH 1.500 " FREE " 2.700 " COMPRESSED LOAD 29 OZS. " RATING 24.2 OZS/IN .075 INLET .500 .250 4 HOLES EQUALLY SPACED .125 DIA. RELIEF VALVE - TECALEMIT OIL…

scan0049 Letter to Messrs. Benton & Stone Ltd. regarding modifications to petrol filters.
View original record X4037 Hs/Rm.1/AD. July 12th, 1932. Mr. Eric Milner, Messrs. Benton & Stone Ltd. Bracebridge St. Birmingham. Dear Sirs, Petrol Filters. We are anxious to reduce the quantity of petrol carried in our…

scan0050 Blueprint showing a modification for a reduced capacity petrol filter.
View original record 28-6-32. PLATE SEATING DIAS: MAY REQUIRE INCREASING SLIGHTLY. DOTTED LINES INDICATE ORIGINAL SHAPE. FILTER PLATES. .100. CAPACITY REDUCING BLOCK. REDUCED CAPACITY PETROL FILTER. MODIFICATION TO…

scan0051 Letter from Benton & Stone Ltd. to Mr. W. A. Robotham regarding a sample and modifications to a petrol filter design.
View original record X4037 Benton & Stone ESTABLISHED 1814 LIMITED ENOTS TRADE MARK REGISTERED TELEGRAPHIC ADDRESS: ENOTS BIRMINGHAM TELEPHONE: ASTON CROSS 1905-8 (PRIVATE BRANCH EXCHANGE) A. B. C. CODE USED DIRECTORS:…

scan0052 Letter from Benton & Stone Ltd. regarding a sample of a special Petrol Filter and its construction.
View original record 84037. Benton & Stone ESTABLISHED 1814 LIMITED ENOTS TRADE MARK REGISTERED PLEASE QUOTE OUR REF. CEM/EGH. YOUR REF. For attention of Mr. W. A. Robotham. Messrs. Rolls-Royce Ltd., DERBY. TELEGRAPHIC…

scan0053 Comparative test results for a reduced volume Enot's petrol filter against a standard filter.
View original record X4037 X7460. x5460 REDUCED VOLUME ENOT'S PETROL FILTER. This filter specially supplied by Enot's, had a petrol volume of 30 ccs. as against the standard volume of 80 ccs. When tested in conjunction…

scan0054 Comparison report on the performance of Tecalemit and Autoklean oil filters following a 10,000-mile test.
View original record Y4057 From Hs/CWH. By. Hs. HS/CWH.8/KT.14.10.32. x7190 x7941 Re. Oil Filters. We fitted a Tecalemit Oil Filter on 19-EX for the 10,000 miles test in France to observe whether the filter soon became…

scan0055 List of arguments against a specific filter, noting its cost and performance.
View original record -2- Hs/GWH.8/KT.14.10.32. Against the filter. (1) More costly to fit as it has to be connected up to the clutch pedal. (2) The actual filtering is not as good as the Tecalemit. Hs/GWH.

scan0056 Seeking feedback on the performance of Tecalemit oil filters on Tank engines.
View original record X8790 To Mr. from E. c. Hs. re Oil Filters. E.3/HP.3.4.33 Now that you have had some experience with Tecalemit oil filters on Tank engines we should like to know what value you think we get out of…

scan0057 Reducing an Enot's filter capacity to decrease the time for petrol to be drawn through a dry pipe, for use on the first Bentley.
View original record To By. from Hs/Rn. c. to Hs/GTS. File X4037. Hs/Rm.4/KT.1.5.33. Some time ago we took over the question of reducing the Enots filter capacity with a view to reducing the time taken for petrol to suck…

scan0058 Order of six reduced capacity Enots petrol filters from Benton & Stone Ltd.
View original record X4037 To ROY/MS. from Hs/CTS. Hs/CTS.14/KT.1.5.33. ENOTS PETROL FILTER - REDUCED CAPACITY. Will you please order from Messrs Benton & Stone Ltd., Bracebridge Street, B'ham, six petrol filters similar…

scan0059 Criticism of the nut on the Bentley petrol filter, proposing a butterfly nut as an improvement.
View original record X4037. To BY. from E/JNR. c. Hs. re Bentley Petrol Filter The accessibility of the nut on the bottom of the Enots petrol filter has been criticised as being difficult to operate. The criticism seems…

scan0060 Instruction to supply a Tecalemit Oil Filter for a 20/25 HP Chassis, noting it is a standard fitting on W.O. Tank Engines.
View original record To RHC. c. Hs/Wym. X4037. BY/CS10/EH.2.10.33. Re 20/25 HP. Chassis - Tecalemit Oil Filter - Sec:5206. Will you please instruct one set of the following parts. LOP. E.59020 Tecalemit Oil Filter in…

scan0061 Letter from British Wire Products Limited regarding their B.W.P. Variable Level Oil Intake device.
View original record TELEPHONE: VICTORIA 4698. *5190 TELEGRAMS:"BRITWIRES, SOWEST, LONDON" BRITISH WIRE PRODUCTS LIMITED. TRU-LAY WIRE ROPE AND TRU-LOC FITTINGS THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS Our Ref.…

scan0062 Brochure for the B.W.P. Variable Level Oil Intake, explaining its principle for better lubrication.
View original record A Simple Way to BETTER LUBRICATION The accompanying illustration shows how the contents of the average crankcase will settle into well-defined layers if left undisturbed. The proportion of water in…

scan0063 Promotional and technical leaflet for the B.W.P. Variable Level Oil Intake system.
View original record THE B.W.P. VARIABLE LEVEL OIL INTAKE (PATENTED) ELIMINATES MANY ENGINE TROUBLES REDUCES REPAIR BILLS OIL PUMP [Left column text under diagrams] The illustration above shows the intake system commonly…

scan0064 Letter to British Wire Products Ltd. suggesting dates for an interview.
View original record x1775 Exptl. Dept. Hs/Rm.7/KW. 4th September, 1934. Messrs. British Wire Products Ltd., 25, Victoria Street, LONDON, S.W.1. Dear Sirs, Referring to your letter of the 24th August. We suggest that a…

scan0065 Letter from British Wire Products Ltd regarding a meeting about the B.W.P. Variable Level Oil Intake.
View original record TELEPHONE: VICTORIA 4698. TELEGRAMS: "BRITWIRES, SOWEST, LONDON". x1775 BRITISH WIRE PRODUCTS LIMITED. TRU-LAY WIRE ROPE AND TRU-LOC FITTINGS THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS Our Ref.…

scan0066 Telegram arranging an appointment for Mr. Robotham from British Wire Products.
View original record Office Stamp: DERBY A 17SEP34 Time of Receipt: 12 47 No.: 453 From: 203 RP 12.32 LONDON T 16 To: -RP- ROYCAR DERBY = Message: OUR LETTER 8 TH ATTENTION ROBOTHAM WILL APPOINTMENT TOMORROW TWO OCLOCK BE…

scan0067 Short typed telegram arranging a visit.
View original record X1775 17.9.34. BRITWIRES, SOWEST, LONDON. TWO O'CLOCK TOMORROW CONVENIENT FOR VISIT. ROBOTHAM.

scan0068 Arranging a trial for a B.W.P. oil intake on a 20/25 HP crankcase.
View original record x5190 To RHC. Hs/Smth.14/KW. 20.9.34. B.W.P. Oil Intake on 20/25 HP. We wish to try one of these intakes on 20/25. Will you please arrange for this to be done. Attached are some particulars we have of…

scan0069 Promotional brochure for the B.W.P. Variable Level Oil Intake, explaining its benefits for engine lubrication.
View original record A Simple Way to BETTER LUBRICATION The accompanying illustration shows how the contents of the average crankcase will settle into well-defined layers if left undisturbed. The proportion of water in…

scan0070 Leaflet explaining the benefits and operation of the B.W.P. Variable Level Oil Intake system.
View original record THE B.W.P. VARIABLE LEVEL OIL INTAKE (PATENTED) OIL PUMP ELIMINATES MANY ENGINE TROUBLES REDUCES REPAIR BILLS The illustration above shows the intake system commonly in use at rest. The crankcase…

scan0071 Letter to British Wire Products Ltd. regarding an Oil Intake Assembly.
View original record X5190 Exptl. Dept. Hs/Smth.19/KW. 26th September, 1934. Messrs. British Wire Products Ltd., 25, Victoria Street, London, S.W.1. Your Ref: NKB/SK. Dear Sirs, We are obliged for yours of Sept. 21st…

scan0072 Letter from British Wire Products Limited regarding a standard intake assembly and forthcoming test reports for a variable intake.
View original record TELEPHONE: VICTORIA 4698. TELEGRAMS: "BRITWIRES, SOWEST, LONDON." BRITISH WIRE PRODUCTS LIMITED. TRU-LAY WIRE ROPE AND TRU-LOC FITTINGS Our Ref: NKB/SK Your Ref: For attention of Mr. Robotham 25,…

scan0073 Fitting of a Tecalemit filter to the 20/25 model engine.
View original record X 5190 To RHC. Hs/Smth.11/KW.4.10.34. Tecalemit Filter on 20/25. In conjunction with the use of lead bronze bearings on the 25 HP. engine, we shall have to provide better oil filtering arrangements.…

scan0074 Letter from British Wire Products Limited regarding test reports on a variable level oil intake.
View original record TELEPHONE: VICTORIA 4698. TELEGRAMS: "BRITWIRES, SOWEST, LONDON" BRITISH WIRE PRODUCTS LIMITED. TRU-LAY WIRE ROPE AND TRU-LOC FITTINGS Our Ref. NKB/SK Your Ref. 25, VICTORIA STREET, LONDON, S.W.1.…

scan0075 Tests covering the operating characteristics of the B.W.P. variable level oil intake.
View original record 1. TESTS COVERING THE OPERATING CHARACTERISTICS OF THE B.W.P. VARIABLE LEVEL OIL INTAKE. -------- The tests hereinafter described and reported on were laid out with the view of determining the…

scan0076 Oil pump test number 1, detailing conditions and results of oil and water levels in a sump.
View original record from the pump to the sump being fairly well distributed, 2. simulating the escape from the main and rod bearings, as well as that oil which would normally be by-passed from the pressure relief valve,…

scan0077 Test report summary on oil suction line performance and water disturbance at different oil levels.
View original record 3 Distance oil suction line below oil level height (continued) Oil height Oil height running idle 1-9/16 --- 1-7/8 --- 1/2 --- 13/16 from bottom 1-1/8 --- 1-7/16 --- 1/4 --- 7/16 from bottom Water…

scan0078 Description of a test simulating engine break-in to evaluate the effect of foreign particles and a specific B.W.P. suction device.
View original record 4. DESCRIPTION OF TEST No. 2. Equipment Same as in test No. 1. As stated above this test was outlined to simulate the operation of a new engine coming off the assembly line into the manufacturer's…

scan0079 Oil pump test comparing a B.W.P. device with a conventional suction assembly, including procedures for taking multiple oil samples.
View original record 5. 250 C. C. water was also added before starting pump. The pump speed on this test was approximately 500 RPM, representing then an approximate engine speed of 1000 RPM which is representative of…

scan0080 Analysis of oil samples taken under various engine operating conditions.
View original record 6. delivery lines, in an effort to show the relative quality of the oil which is being forced to the bearings after the engine has had an opportunity to warm up slightly and finish the test period…

scan0081 The superiority of the B.W.P. Variable Level Oil Intake device for reducing engine wear during the initial breaking-in period.
View original record 7. It will be readily apparent from examining the above results that the quality of the oil both as to sediment and water content when the B.W.P. device is used is very superior to the quality of that…

scan0082 Report comparing a B.W.P. suction device against a conventional system to reduce abrasive material in engine oil.
View original record 8. In an effort to further prove beyond a shadow of doubt that the reduction of the abrasive material in circulation in the oil during this initial breaking in period as accomplished by the B.W.P.…

scan0083 Report page detailing Test No.4, focusing on car operation and the effect of surging oil on sediment in the oil sump.
View original record 9. but the cleanest oil to circulate to every point requiring lubrication under the most unfavourable conditions, namely when the greatest amount of abrasives in present, it follows that its…

scan0084 Oil sump tests, detailing water content analysis after violent brake applications and the use of a B.W.P. device.
View original record 10. which was carried out up to the danger point the side surge of the oil in the sump was but a fraction as violent as that taking place as a result of brake application. Motion pictures were taken…

scan0085 Analysis of an experiment observing water and sediment pick-up from an oil sump using motion pictures.
View original record Motion pictures were taken of this operation and the results of the draw-off. It is very interesting to note the high percentage of water which is in the neighbourhood of 20 per cent which can be seen…

scan0086 The superior performance of the B.W.P. oil delivery device over conventional systems and the nature of tests conducted.
View original record 12. disturbed by the same currents. It is believed from the above that it has been pretty definitely established that under any and all operating conditions oil delivered to the bearings by the B.W.P.…

scan0087 Comparison of oil temperature and pressure readings between a standard and a B.W.P. variable level oil intake device.
View original record 13. made with everything identical with the exception of the incorporation of the B.W.P. variable level oil intake device. RUN No. 1. Using manufacturer's standard equipment. Time Oil Temperature Room…

scan0088 Oil pressure and temperature tests comparing different oil sump suction devices.
View original record 14. (Note) This constant pressure was maintained for a period of 28 minutes at which time the temperatures of the oil had become sufficiently high because of constant circulation to be over the danger…

scan0089 Comparison of oil pressure test results using a conventional suction device versus a B.W.P. device.
View original record 15. RESULT OF TEST: Time in Seconds. Air temperature. Oil temperature. Oil pressure. 0 76 76 35 lbs 1 76 76 35 2 76 76 35 3 76 76 35 4 76 76 30 5 76 76 15 6 76 76 0 Showing that the oil pressure was…

scan0090 The benefits of a B.W.P. Float device for engine lubrication, oil pressure, and reducing deterioration.
View original record 16. action of a B.W.P. Float in drawing itself into the oil and sealing every possible air cavity that starts to form. From the above runs it is evident that the Floating B.W.P. device has a material…

scan0091 Test report on the relative temperatures of oil at various depths in the sump under actual road conditions.
View original record 17. TEST NO 5. RELATIVE TEMPERATURES OF OIL AT VARIOUS DEPTHS IN THE SUMP UNDER ACTUAL ROAD CONDITIONS. It is naturally expected that various engineers will desire information pertaining to the oil…

scan0092 Oil temperature test report for a 1929 Chevrolet, comparing the standard system with a 'B.P.W.' installation.
View original record 18. OIL TEMPERATURE TEST CAR USED - Chevrolet 1929 - 6 cy. Coach No. 711902. MILEAGE - 2,140. OIL - Fresh Mobile "A". AIR TEMPERATURE - 72 - 80. DRIVING SPEED - 45. m.p.h. DATE - 18 August 1929. OIL…

scan0093 Report comparing a B.W.P. lubrication suction device against a standard Chevrolet system, focusing on oil temperature and winter performance.
View original record 19 It will be noted from the above that the difference in oil temper- ature at the bottom as compared with the top in the case of the Standard Chevrolet suction device was 8 degrees, whereas with the…

scan0094 The benefits of a new lubrication device for internal combustion engines to improve reliability and reduce costs.
View original record 20. An examination of the car manufacturers service records will show conclusively that the major troubles are brought about by improper, insufficient and in some cases hit and miss lubrication. Any…

scan0095 Laboratory report on the analysis of an oil sample from the Detroit Testing Laboratory.
View original record Form 8 THE DETROIT TESTING LABORATORY DETROIT, MICHIGAN Number 5709-A-4 Date 9-9-29 Sample from Taylor Brothers Manufacturing Company Sample of Oil Remarks #1B Customer's Order D. T. L. Order 51195…

scan0096 Laboratory report on the analysis of an oil sample, detailing its water, sediment, and grit composition.
View original record Form 8 THE DETROIT TESTING LABORATORY DETROIT, MICHIGAN Number 5709-A-5 Sample from Taylor Brothers Manufacturing Company Date 9-9-29 Sample of Oil Customer's Order Remarks #2B D. T. L. Order 51195…

scan0097 Laboratory report from The Detroit Testing Laboratory on an oil sample.
View original record Form 8 THE DETROIT TESTING LABORATORY DETROIT, MICHIGAN Number 5709-A-6 Date 9-9-29 Sample from: Taylor Brothers Manufacturing Company Sample of: Oil Remarks: #3B Customer's Order D. T. L. Order 51195…

scan0098 Laboratory report from The Detroit Testing Laboratory on an oil sample.
View original record Form 8 THE DETROIT TESTING LABORATORY DETROIT, MICHIGAN Number: 5709-A-7 Date: 9-9-29 Sample from: Taylor Brothers Manufacturing Company Sample of: Oil Customer's Order: Remarks: #4B D. T. L. Order:…

scan0099 Laboratory report from The Detroit Testing Laboratory analyzing an oil sample.
View original record Form 8 THE DETROIT TESTING LABORATORY DETROIT, MICHIGAN Number 5709-A-8 Date 9-9-29 Sample from Taylor Brothers Manufacturing Company Sample of Oil Remarks #5B Customer's Order D. T. L. Order 51195…

scan0100 Laboratory report on the percentage of water found in an oil sample after a series of brake application tests.
View original record THE DETROIT TESTING LABORATORY DETROIT, MICHIGAN Number 5705-A-18 Sample from Taylor Brothers Manufacturing Corporation Date 9-6-29 Sample of Oil Customer's Order 2174 D. T. L. Order 51176 Remarks…

scan0101 Laboratory report from The Detroit Testing Laboratory detailing the percentage of water in an oil sample.
View original record Form 8 THE DETROIT TESTING LABORATORY DETROIT, MICHIGAN Number 5705-A-19 Sample from Taylor Brothers Manufacturing Corporation Date 9-5-29 Customer's Order 2174 Sample of Oil D. T. L. Order 51176…

scan0102 Test report on a variable level oil intake indicator fitted to a B-4 Unit sump.
View original record [Handwritten] X5190 To E/JNR. from Hs/WB. [Handwritten] ~~410~~ Hs/WB.12/KW.30.11.34. [Handwritten] (Windley) EX.16078 B.W.P. Variable Level Oil Intake. Tested as an oil level indicator - fitted to…

scan0103 The behaviour of oil level indicators in aerated oil.
View original record -2- Behaviour in Aerated Oil. Commencing with a known quantity of oil (9 pts.) in the sump, the whole of it was whipped into foam. This of course increased the volume of the sump contents, and…

scan0104 Fitting of a B.W.P. oil intake to an engine.
View original record X1139 To RHC. Hs/Smth.31/KW.23.9.35. B-14. We wish to fit a B.W.P. oil intake to this engine. The scheme number is Ex.16078. The intake is on order. Hs/Smth.

scan0105 Order for a Variable Level Oil Intake from British Wire Products Ltd.
View original record To Roy. X1139 Hs/Smth.30/KW.23.9.35. Will you please order from British Wire Products Ltd., 25, Victoria St., LONDON, S.W.1. 1. B.W.P. Variable Level Oil Intake. This intake is to be similar to the…

scan0106 Letter from S. Smith & Sons regarding a No. 2 size Oil Filter being sent for test purposes.
View original record 105 X1139 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY BY APPOINTMENT TO HIS MAJESTY THE KING TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON. CABLES: SPEEDOFAC,…

scan0107 Fitting instructions and oil pressure information for a Smith oil filter.
View original record SMITH OIL FILTER. FITTING INSTRUCTIONS. The filter should be fitted in a warm place, preferably near the exhaust manifold. Five alternative positions are given over-leaf which have been found from…

scan0108 Technical bulletin regarding oil flow, observing results, and the life of an oil filter.
View original record -2- OIL FLOW. The flow of oil through the filter when first fitted is considerable which ensures that the sump is cleaned up of foreign matter very quickly leaving only colloidal matter. As the filter…

scan0109 The use of colloidal graphite with the Smith's Filter during the engine running-in period.
View original record -3- COLLOIDAL GRAPHITE. The question of colloidal graphite used in the sump for running-in purposes has been carefully thought out and allowed for in the design of the Smith's Filter. For those owners…

scan0110 Article detailing the extremely effective cleaning of a new oil filter by the Smith Accessory.
View original record A NEW OIL FILTER. Extremely Effective Cleaning by the New Smith Accessory. THERE is no doubt that an efficient oil filter may be an important factor in the life of an engine, particularly in regard to…

scan0111 Reprint from 'The Automobile Engineer' describing the 'Smith' oil filter with test reports, issued by S. Smith & Sons.
View original record indestructible, yet oil in service accumulates impurities. These consist of carbon from decomposition of the oil and extraneous matter such as dust, grit and metal particles. Figs. 9, 10 and 11 are…

scan0112 Letter to S. Smith & Sons Ltd. regarding testing of an oil filter and requesting figures and a quotation.
View original record X1139 Exptl. Dept. Hs/Std.7/KW. 7th May, 1936. Messrs. S. Smith & Sons (M.A.) Ltd., Cricklewood Works, LONDON, N.W.2. For the attention of Mr. F.J. Grose. Dear Sirs, With reference to your letter of…

scan0113 Letter from S. Smith & Sons (Motor Accessories) Ltd regarding an oil filter and a proposed meeting.
View original record 105 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY. BY APPOINTMENT TO HIS MAJESTY THE KING ENGINEERING AND ALLIED EMPLOYERS NATIONAL FEDERATION 1935 TELEPHONE: GLADSTONE 3333 (20 LINES)…

scan0114 Telegram from Steadman, Roycar to Grose, Speedofac regarding a meeting to discuss an oil filter.
View original record X1139 11.5.36. GROSE, SPEEDOFAC, PHONE, LONDON. CAN DISCUSS OIL FILTER ANYTIME BETWEEN TWO AND FIVE-THIRTY TUESDAY. EXPECTING YOU THEN. STEADMAN, ROYCAR.

scan0115 Quotation from S. Smith & Sons for No. 2 size filters following recent tests.
View original record CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY S.Smith & Sons (Motor Accessories) Ltd CRICKLEWOOD WORKS LONDON, N.W.2 TELEPHONE: GLADSTONE 3333 (10 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON.…

scan0116 Invoice from S. Smith & Sons for an oil filter and requesting an order be issued.
View original record STEADMAN. Noted AS/STD Hs. G/Cam/CA.10/WP.20.5.36. We have an invoice from S. Smith & Sons (MA) Ltd., dated 15th inst., on which we are charged £2. 10. 0d nett for 1. X.43243 No.2.Size Oil Filter less…

scan0117 Clarifying that a filter was sent on a loan account and should not be paid for.
View original record To Roy. c. to G/Cam. + 1139 Hs/Std. 7/JH. 28.5.36. Referring to your memo. G/Cam/GA.10/WP.20.5.36. this filter was sent to us on loan account, as stated in Messrs. Smith's letter of the 13th inst.,…

scan0118 Follow-up letter from S. Smith & Sons regarding a quotation for a new oil filter.
View original record 108 X1139 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY SMITH'S MP S.Smith & Sons (Motor Accessories) Ltd CRICKLEWOOD WORKS, LONDON, N.W.2 TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS:…

scan0119 Letter to S. Smith & Sons Ltd. rejecting their oil filters after testing due to performance and size issues.
View original record x1159 Exptl. Dept. Hs/Std.10/JH. 3rd September, 1936. Messrs. S. Smith & Sons Ltd., Cricklewood Works, LONDON. S.W.2. Dear Sirs, Referring to your letter of the 20th August, we have tested the oil…

scan0120 Return of two Smith's oil filters that were loaned for testing.
View original record To D/BP. c: to G/Mt. X1139 Hs/Std.12/JH.3.9.36. We are today sending into the Stores two Smith's oil filters which were loaned to us for test. Will you please return these to Messrs. S. Smith & Sons…

scan0121 Letter from S. Smith & Sons regarding potential failure causes of their filter.
View original record 105 MOTOR EXHIBITION CARS & BOATS OCT 15-24 OLYMPIA OUR STAND No. 381 GALLERY ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION 1896 AGENCIES AND SERVICE STATIONS THROUGHOUT THE BRITISH EMPIRE AND…

scan0122 Letter from S. Smith & Sons regarding a returned filter and a new two-in-one oil filter design.
View original record S.P.61 S. SMITH & SONS (MOTOR ACCESSORIES) LTD. CRICKLEWOOD WORKS, LONDON, N.W.2. CONTINUATION NO. 1 Messrs. Rolls-Royce Ltd. 7th September 1936. fit it in such a position, but we should be pleased to…

scan0123 Dispatch of a pressure oil filter and two-stage relief valves for the Wraith II.
View original record BY. c.c. B.M.G. c. Hs/Rm. 1139. x1044 E/JNR.2/HP.2.7.36. re Wraith II. We send you herewith:- LeC.5179 - Pressure oil filter and two stage relief valves. E/JNR.

scan0124 Letter from S. Smith & Sons regarding a postponed visit to discuss a filter question.
View original record 105 x 1139 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY ENGINEERING AND ALLIED EMPLOYERS NATIONAL FEDERATION 1896 TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON. BY…

scan0125 Oil feed trouble causing sludge in the Phantom III chassis, comparing different oil brands.
View original record R from MP. 7/11/36 Hs/Rm 1139. LA9/T21.9.36 PHANTOM III CHASSIS On the above type chassis we have experienced a certain amount of trouble with the oil feed to the rocker mechanism, due to the filter…

scan0126 Letter to S. Smith & Sons Ltd. providing information regarding an oil filter.
View original record X 1139 Exptl. Dept. Hs/Std.29/KW. 23rd September, 1936. Messrs. S. Smith & Sons Ltd., Cricklewood Works, London, N.W.2. For the attention of Mr. F. Grose. Dear Sirs, We send you herewith the…

scan0127 Letter from S. Smith & Sons acknowledging receipt of drawings and advising a filter arrangement is being prepared.
View original record 108 X1139 MOTOR EXHIBITION CARS & BOATS OCT 15 OLYMPIA OUR STAND No. 381 GALLERY CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY S.SMITH & SONS (Motor Accessories) Ltd CRICKLEWOOD WORKS LONDON,…

scan0128 Follow-up letter from S. Smith & Sons requesting the normal working pressure for a specific flow rate and temperature.
View original record 105 X1139 STEADMAN. CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY BY APPOINTMENT TO HIS MAJESTY THE KING ENGINEERING AND ALLIED EMPLOYERS NATIONAL FEDERATION TELEPHONE: GLADSTONE 3333 (20 LINES)…

scan0129 Letter to Messrs. Smith & Sons Ltd. providing the normal working pressure corresponding to a specific flow rate and temperature.
View original record X1139 Exptl. Dept. Hs/Std.16/JH. 30th September, 1936. Messrs. Smith & Sons Ltd., Cricklewood Works, LONDON. N.W.2. For the attention of Mr. Grose. Dear Sirs, We regret that we omitted to give you the…

scan0130 Letter from S. Smith & Sons regarding a new 'BLUECOL' anti-freeze booklet.
View original record 105 1139 SMITH'S OIL FILTER CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY LADSTONE 3333 (20 LINES) SPEEDOFAC, PHONE, LONDON. CABLES: SPEEDOFAC, LONDON. CODES: MARCONI, COMMERCIAL, BENTLEY'S. BY…

scan0131 Letter from S. Smith & Sons regarding their new BLUECOL anti-freeze booklet.
View original record 105 11397 SMITH'S OIL FILTER CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY BY APPOINTMENT TO HIS MAJESTY THE KING TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON.…

scan0132 Design of a Bentley Suction Oil Strainer and Sump.
View original record Hives 1139 Swdl Any Comments? Rm BY. c. Rm. RHC. E/JNR.3/HP.26.10.36. Bentley Suction Oil Strainer and Sump. We send you herewith LeC.5345 showing the above. This consists of making the sump with a…

scan0133 Collapsed and clogged oil pressure filter gauze element after running for 13,920 miles.
View original record 1139. To Rm. from RHC/RH. c.c. to RHC. RHC/RH/I/AP.9.11.36. Ph.III. Oil Pressure Filter Gauze E.87841. Ph.III.No.10 Unit. 33-EX. This was fitted 9.4.36. and has run 13,920 miles in Filter element has…

scan0134 Notification regarding a collapsed main filter from a Phantom III being sent due to sludge formation.
View original record 1139. W/S. C. from Rm. Rm39/R.10.11.36. I am sending you under separate cover the main filter removed from the Phantom III which has collapsed due to sludge formation. Rm.

scan0135 Order for one dozen Tecalemit filters for use on experimental chassis unit beds.
View original record 1139. To Roy. from Rm/Swdl. Rm/Swdl.23/AP.13.11.36. Will you please order one dozen Tecalemit Filters of the type - O.F. 1054 type 123/12 for use on the Experimental chassis unit beds. Rm/Swdl.

scan0136 Letter from the Experimental Dept. to AC-Sphinx Sparking Plug Co. requesting a sample oil filter for trial.
View original record 1139. (Experimental Dept.) Rm/Swd1.16/R. 31st December, 1936. The AC-Sphinx Sparking Plug Co.,Ltd., D U N S T A B L E, Beds: Dear Sirs, We should be pleased if you could send us a sample oil filter…

scan0137 Letter from The AC-Sphinx Sparking Plug Co. Ltd. arranging a meeting to discuss oil filters.
View original record TELEGRAMS: SPHINX, DUNSTABLE TELEPHONE: DUNSTABLE 360 PRIVATE BRANCH EXCHANGE. THE AC-SPHINX SPARKING PLUG Co. LTD. DIRECTORS: N. F. STOCKBRIDGE, W. O. KENNINGTON, C. J. BARTLETT DUNSTABLE…

scan0138 Fitting Tecalemit type filters to production Bentley cars and their use on the test bed.
View original record 1139. Mx. from Rm. c. RHC. Rm5/R.24.12.36. UNIT TEST. As you know we are fitting a Tecalemit type filter to the Bentley cars on production. This has been found necessary owing to the susceptibility to…

scan0139 Defect in the Phantom III Tappet Oil Filter, detailing a modification to correct a bad oil seal.
View original record Piles [signature] 1139 BY c.Fwd.HPS.Mx. E/JNR.2/HP.19.2.37. Phantom III Tappet Oil Filter. We understand that Mx. has pointed out that there is a defect in the present filter where it fits in the…

scan0140 Withdrawing the standardisation sheet for the Tecalemit oil filter on Bentley & 25/30 models due to oil pressure loss.
View original record 1139 Hs. from Rm/Gry. Rm/Gry3/R.31.3.37. TECALEMIT OIL FILTER - BENTLEY & 25/30. In view of what you said this morning, and the fact that 6.B.IV in France and 1.B.IV in England are having trouble…

scan0141 Recommendation to fit an internal guard to Phantom III suction filters to prevent them from collapsing.
View original record 1139. To E. from Rm/Swdl. c. to By. Rm/Swdl.16/AP.5.4.37. PHANTOM III. In several of our experimental Ph.III. units the gauze suction filters in the sump have been found badly collapsed and distorted.…

scan0142 Test bed report on the efficiency of an A.C. oil filter when used on a 4 1/4 Litre Bentley engine.
View original record 1139 Files A.C. OIL FILTER - TEST BED REPORT. Part under test. A.C.Oil Filter. Purpose of Test. To determine the efficiency of this filter when used on a 4 1/4 Litre Bentley engine. Condition of Test.…

scan0143 Distortion of the Phantom III oil strainer and a proposed modification using a supporting frame.
View original record Swdt Piles 1139 BY: c. Rm. HPS. C/RD. E/JNR.1/HP.5.5.37. Phantom III - Oil Strainer.- Rm/Swdl.16/AP. 5.4.37. With reference to the above memo, there is no doubt that when the strainers are removed…

scan0144 Decision to delete the designed pressure oil filter on the Wraith in favour of a bye-pass filter.
View original record SECRET To H. from Rm/Swdl. c. to Da. c. to By. 1139 Rm/Swdl.7/AP.21.5.37 WRAITH OIL FILTER. In view of the decision not to adopt the external oil pressure filter on Bentley and 25/30, it is assumed…

scan0145 Order for two dozen Tecalemit filters for experimental chassis unit test beds.
View original record 1139 To Roy. from Rm/Swdl. c. G/JWH. Rm/Swdl.8/AP.26.5.37 Will you please order two dozen Tecalemit filters of the type OF.1054 type 123/12 for use on the expl. chassis unit test beds. Rm/Swdl.

scan0146 Installation and cartridge renewal instructions for an oil filter.
View original record DIRECTIONS for INSTALLING OIL FILTER CARTRIDGE RENEWAL FIG-A 4 1/8" 3" FIG-B COVER FIG-C READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING LOCATE A CLEAR SPACE ON THE DASH, PREFERABLY ON THE…

scan0147 Standardisation of parts for the Phantom III Tappet Oil Filter due to difficulty in dismantling.
View original record R.R. 755 (5H) 20396 21/7/36 J.W.S. COMPLETED 1.6.37. PHANTOM III. STANDARDISATION of PARTS Date 14.4.37. Description of Parts. TAPPET OIL FILTER. X No. 1139. Drawing No. LeC.5530 Part List Origin.…

scan0148 Standardisation of parts form for the Phantom III, detailing production feasibility and cost estimation for new tools.
View original record PHANTOM III STANDARDISATION of PARTS DRG. No. X PART No. 36720 Estimated cost of new tools - £3. 0. 0. Could be brought on to production at the 1st. chassis in "E" Series (without scrap.) TABLE…

scan0149 The premature sludging of Phantom III pressure oil filters, recommending an alteration to the service interval.
View original record To Rm. from Rm/IMW. c. to Rm/GWH. 1139 Rm/IMW.14/AP.9.6.37 PHANTOM III. PRESSURE OIL FILTERS. Experience gained on 35-EX. in France has shewn that the pressure filter can become completely sludged up…

scan0150 Recommending a change to the service interval for pressure oil filters based on field experience.
View original record By. from Rm. Hd. c. Hs. c. E. 1139 P.III - PRESSURE OIL FILTERS. Rm15/R.9.6.37. Experience gained on 35-EX in France has shown that the pressure oil filter can be completely sludged up in 9,000 miles.…

scan0151 Turnings found in the filter of Phantom III chassis 3.BU.78.
View original record To Rm. from Rm/GWH. c.c. RHC. 1139 Cricklewood June 14th 1937. PHANTOM III. FILTERS. Enclosed find a few turnings taken out of the filter in the vee of 3.BU.78. I don't think in this case we can quite…

scan0152 Night Letter Telegram requesting half-a-dozen filter casings and elements for testing.
View original record N.L.T. JERVIS B. WEBB. GENERAL FILTERS INC. 9001 ALPINE AVENUE DETROIT. PLEASE SEND HALF-A-DOZEN MORE GENERAL FILTER CASINGS AND ELEMENTS FOR TEST. ROBOTHAM - ROYCAR. 23.6.37. Handwritten: 1139 ?…

scan0153 Telegram received by telephone confirming the immediate dispatch of filters, casings, and elements.
View original record W.O. ROLLS-ROYCE LTD. 1139 TELEGRAM RECEIVED BY TELEPHONE. Time Received: 10.0 Date: 26 6 37 To: Robertsham Roycar By: Na from: Detroit. 25/H 17 Message: Sending immediately half dozen general filters…

scan0154 Cablegram from Webb in Detroit to Robotham in Derby, requesting the immediate dispatch of filter parts.
View original record FORM No. 6. 1139 WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., LD. CANADIAN NATIONAL TELEGRAPHS. TELEPHONE MIDLAND 1711 BIRMINGHAM, 1, BROAD ST. CHAMBERS.…

scan0155 Western Union telegram confirming the immediate dispatch of General Filters casings and elements.
View original record WESTERN UNION CLASS OF SERVICE DESIRED DOMESTIC TELEGRAM DAY LETTER NIGHT MESSAGE NIGHT LETTER CABLE FULL RATE DEFERRED NIGHT LETTER X SHIP RADIOGRAM Patrons should check class of service desired;…

scan0156 The temporary fitting of a general bypass filter to a Wraith III engine.
View original record Sivdl Leveles Any commende SECRET. Par -BY. 1139 c. Rm. c. HPS. E/JNR.1/HP.8.7.37. General Bypass Filter. -Wraith III Rm. has expressed the desire to fit a bypass filter in place of the oil pressure…

scan0157 Payment authorization for two invoices received from General Filters, Inc. in Detroit, USA.
View original record Rm. 1139 G/WFH/CA.6/KI.17.7.37. We attach hereto copies of two invoices received from the General Filters, Inc. 9001 Alpine Avenue, Detroit, Mich. U.S.A. It appears the four items on the invoice dated…

scan0158 Request to send a covering order to General Filters, Inc. for goods that have already been dispatched.
View original record 1139 Roy. G/WFH/CA Rm1/R.27.7.37. G/WFH/CA.6/KI.17.7.37. Will you please send a covering order to:- General Filters, Inc. 9001 Alpine Avenue, Detroit, Mich. U.S.A. as per attached copies of invoices.…

scan0159 Letter from General Filters, Inc. confirming the shipment of improved design filters and cartridges.
View original record GENERAL FILTERS, INC. 9001 Alpine Avenue DETROIT Handwritten notes: 1139, Side, Swdl., Please note, Rm June 28, 1937 Rolls Royce, Ltd. Derby, England Attention: Mr. W. Arthur Robotham Gentlemen: In…

scan0160 Letter detailing the results of initial tests on oil filters and cartridges.
View original record Rm/Swdl.7/AP. August 4th 1937 Jervis B.Webb, Esq., General Filters Inc, 9001 Alpine Avenue, DETROIT. U.S.A. Dear Sirs, We thank you for the six filters and six extra cartridges received from you and…

scan0161 Letter asking for information on the performance of a by-pass oil filter, including cartridge replacement mileage and efficiency.
View original record -2- We are now proceeding on the following lines; commencing with clean oil and new cartridge, a sample of oil to be taken every 1000 miles. When the oil appears to be getting dirty a new cartridge to…

scan0162 Letter to A.C. Sphinx Sparking Plug Co. requesting A.C. bye-pass oil filters and details on their setup.
View original record 1139 August 5th 1937 Rm/Swdl.16/AP. The A.C.Sphinx Sparking Plug Co., Dunstable, BEDS. Dear Sirs, Will you please supply us with 3 A.C. bye-pass oil filters of similar type to the ones you sent us for…

scan0163 Modification to the Special Bye-pass Oil Filter on the Phantom III (32-EX).
View original record CHATEAUROUX. Rm/IMW/4/JAB.9.7.37. To. Rm. ~~Rm/Gwdl~~ ~~Rm/GWH~~ HH3 1139 32-EX. PHANTOM III. Special Bye-pass Oil Filter We disconnected the top end of the outlet pipe from the filter from the union…

scan0164 Official order be placed for A.C. oil filters with A.C.Sphinx Spark Plug Co.
View original record 1139 To Roy. from Rm/Swdl. c. to G/JWH. Rm/Swdl.9/AP.12.8.37 Will you please pass an official order to A.C.Sphinx Spark Plug Co., Dunstable, BEDS. for 3 A.C. oil filters which we have received in…

scan0165 Cablegram from Chicago to Derby regarding a patent application filed by General Motors.
View original record FORM No. 6. WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., LD. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM, 1. (Tel. No.…

scan0166 Letter to A.C. Sphinx Sparking Plug Co. Ltd. regarding the purchase and technical specifications of oil filters.
View original record The A.C. Sphinx Sparking Plug Co.Ltd., Dunstable, Beds. Dear Sirs, We thank you for the 3 oil filters and have accordingly instructed an official order to be passed for these. It is more convenient…

scan0167 Internal memorandum requesting an urgent order for A.C. oil filters.
View original record 1139 To Roy. from Rm/Swdl. c. G/JWH. Rm/Swdl.4/AP.23.8.37 Will you please order 3.A.C. oil filters (Z.S.1.) from the A.C.Co. Dunstable, Beds. The above are similar to the ones we recently received and…

scan0168 Follow-up letter to The A.C. Sphinx Spark Plug Co. concerning trials of their oil filters.
View original record 1139 August 23rd.1937 Rm/Swdl.15/AP. The A.C.Sphinx Spark Plug Co., Dunstable, BEDS. Dear Sirs, We are anxiously awaiting your reply to our letter Rm/Swdl.5/JH.17.8.37 regarding various particulars…

scan0169 Complaint about stripped threads on the Phantom III Hydraulic Tappet Filter Body cover.
View original record To By. c. to Rm. c. to Mx. 113 q also 1113 Rm/GWH.2/JH.27.8.37. Phantom III. Hydraulic Tappet Filter Body cover E.87788. This is to confirm my verbal complaint of the stripping of the threads in the…

scan0170 Recommendation to revert the Wraith suction strainer from a double gauze system to a single gauze filter for reasons of maintenance and cost.
View original record To By. from Rm/Swdl. c. Da. 1139 Rm/Swdl.32/MH.2.9.37. WRAITH SUCTION STRAINER. The present system of the double gauze strainer in the lower half is, we consider unnecessary and recommend that we…

scan0171 Letter to The AC Sphinx Spark Plug Co. regarding the trial installation and performance of their oil filters.
View original record 1139. Rm/Swd1.5/MH. The AC Sphinx Spark Plug Co., Dunstable, Beds. 3rd. September 1937. Dear Sirs, We thank you for your letter of the 23rd. inst. containing information regarding the installation of…

scan0172 Query regarding the correct jet hole size in ZS.1 filters for a pressure of 30lbs/square inch.
View original record 2. the amount of carbon matter which has been removed. One item we should like to know, is whether the size of the jet hole in the inlet union of the ZS.1 filters you have supplied is correct for the…

scan0173 Order for 2 dozen Tecalemit filters for experimental chassis unit test beds.
View original record X 1139 To Roy. from Rm/Swdl. c. G/JWH. Rm/Swdl.2/MH.7.9.37. Will you please order 2 dozen Tecalemit filter of the type O.F. 1054 type 123/12 for use on the exptl. chassis unit test beds. Rm/Swdl.

scan0174 Clarifying the use of Tecalemit filter elements on production and experimental cars.
View original record To Roy. from Rm/Swdl. c. G/JWH. 1139 Rm/Swdl.2/AP.8.9.37 With reference to the attached letter from the Tecalemit people we do not use any Tecalemit filter element as standard equipment on any of our…

scan0175 Instructions and list of new blueprints for the Wraith III Chassis oil filter, section 5203.
View original record To. RHCs c.c. HRCs c. B'v. c. Rm/Gry. c.c. Gs. d. EH/PLAN. e.v. G/Rbs. c.c. TM/TH. Swdl Files 1139 Re Wraith III Chassis - Oil Filter - Section 5203. Please receive herewith blue prints of the…

scan0176 Instructions for fitting an A.C. Bye-Pass filter and modified core covers for the Wraith III cylinder block.
View original record Swdl 1139 DA.3/G.21.9.37. RCc WRAITH III - A.C. BYE-PASS FILTER AND MODIFIED CORE COVERS FOR CYLINDER BLOCK. Please receive herewith E.CD.80 A.C. Bye-Pass Filter. Will you please detail and instruct…

scan0177 Standardisation of a support guard for the oil sump filter to prevent gauze collapse on the Phantom III.
View original record RR 735 (10H) 38137 7-4-37 WHK 26070 COMPLETED 1.1.38. PHANTOM III STANDARDISATION OF PARTS. Date 23.9.37 X No. 1139 Drawing No. 5665 Part List Description of Parts: SUPPORT GUARD FOR SUMP FILTER (oil)…

scan0178 Cost estimation and proposal for a modification using a sweated sleeve in 'E' Series chassis end caps.
View original record PHANTOM II STANDARDS. PARTS Estimated cost of new tools ...... £18. 0. 0. Could be brought on to production at the 1st. of chassis in "E" Series (without scrap) Use sleeve E.89030 sweated inside…

scan0179 Letter from Jervis B. Webb Company inquiring about the market potential and manufacturing rights for their filters in England.
View original record Handwritten notes: Top: Swoll - Please let me have a brief report comparing the A.C. with the General. Rm Red Stamp: 1139. Letterhead: JERVIS B. WEBB COMPANY 8951 ALPINE AVENUE DETROIT, MICH. October…

scan0180 Comparison of 'AC' and 'General' type oil filters, including a performance test on chassis 32-EX.
View original record 16th. November 1937. OIL FILTERS. With regard to the oil cleaning ability there is little to choose between the "AC" and the "General" type of filters both being good in recovering the oil from a…

scan0181 Cost reduction and standardisation of the Phantom III suction filter guard.
View original record To By. from Rm/Swdl. c. By/CS. PHANTOM III. SUCTION FILTER. A standardisation sheet was issued for a guard on the lower half gauze strainer in accordance with LeC.5665. It has been pointed out by the…

scan0182 Letter to Mr. Jervis B. Webb in Detroit regarding the comparison, sales, and manufacturing of a filter.
View original record 1139 Rm8/R. 16th November, 1937. Jervis B. Webb, Esq., 8951, Alpine Avenue, Detroit, MICH: U.S.A. My dear Mr. Webb, Thank you for your letter of October 13th. I am to blame for not replying sooner. We…

scan0183 The second page of a letter discussing negotiations and attaching a tester's report.
View original record -2- 16.11.37. whom you are anxious to open up negotiations, I could give you some idea of what success they might be able to make of the project. I attach a copy of our tester's report. I hope that…

scan0184 Comparison document on 'AC' and 'General' type oil filters, including maintenance and test results.
View original record 16th November 1937. OIL FILTERS. With regard to the oil cleaning ability there is little to choose between the "AC" and the "General" type of filters both being good in recovering the oil from a black…

scan0185 Letter to Jervis B. Webb regarding a potential business opportunity for his oil filter with S. Smith & Sons.
View original record Rml/R. 3rd December, 1937. Jervis B. Webb, Esq., 8951 Alpine Avenue, DETROIT, Mich. Dear Mr. Webb, I am interesting S. Smith & Sons, the biggest Accessory Oil Manufacturers in England, in your oil…

scan0186 Invoice from General Filters, Inc. for the supply of No. 5 Cartridges.
View original record FORM 3 500 SETS 12-36 LPC-32399 CUSTOMER FILE GENERAL FILTERS, INC. 9001 ALPINE AVENUE DETROIT, MICH. 1139. INVOICE Nº .302 DATE December 7th, 1937 SOLD TO Rolls-Royce Ltd. Derby, England FOR…

scan0187 Invoice from General Filters, Inc. for six No. 5 Cartridges.
View original record FORM 3 500 SETS 12-36 LPC-32399 CUSTOMER GENERAL FILTERS, INC. 9001 ALPINE AVENUE DETROIT, MICH. INVOICE INVOICE No 302 DATE December 7th, 1937 SOLD TO Rolls-Royce Ltd. Derby, England SHIPPED TO Above…

scan0188 Shipping memo from General Filters, Inc. for six cartridges sent for test purposes.
View original record FORM 2 500 SETS 12-36 LPC-32398 CUSTOMER GENERAL FILTERS, INC. 9001 Alpine Avenue DETROIT, MICH. SHIPPER Nº 464 Date December 7th, 1937 Consigned to Rolls-Royce Ltd. Attn. W. A. Robotham Address…

scan0189 Order for 3 AC oil filters for use on a Bentley.
View original record To Roy. c. to G/JWH. 1139 Rm/Swdl.8/JH.8.12.37. Will you please order 3 AC. oil filters ZS1 from the A.C. Co., Dunstable, Beds. These are a separate order to Wraith and are for use on Bentley…

scan0190 Testing a Tecalemit filter on the suction side of a pump for production units.
View original record Rm. 1139 Production Unit Test Tecalemit Filter is housed on suction side of pump. Is used in place of the normal external suction pipe between pump & sump. Is OK other than not catering for a dirty…

scan0191 The use of Tecalemit filters on unit test beds for chassis engine tests.
View original record SWDL. Toiles Is this filter between the pump and the crank-case Rm o BT o RHO o H1 c Rm LA17/T21.12.37 RE. CHASSIS ENGINE TESTS We have been using a Tecalemit filter on the Unit Test Beds for…

scan0192 Letter from General Filters, Inc. to Mr. W. A. Robotham concerning manufacturing and pricing options for a filter.
View original record GENERAL FILTERS, INC. 9001 Alpine Avenue DETROIT December 21, 1937 Mr. W. A. Robotham Rolls-Royce Ltd. Derby, England Re: Rm1/R. Dear Mr. Robotham: We wish to thank you for the interest you have…

scan0193 Letter from Jervis B. Webb Company regarding the potential manufacturing and sale of a filter in England.
View original record JERVIS B WEBB COMPANY 8951 ALPINE AVENUE DETROIT, MICH. SWDL December 8th, 1937 Mr. W. A. Robotham, Rolls Royce, Ltd., Derby, England My dear Mr. Robotham: Have your letter of November 16th and I am…

scan0194 Letter from General Filters, Inc. to Mr. W. A. Robotham regarding filter cartridges and pricing.
View original record GENERAL FILTERS, INC. 9001 Alpine Avenue DETROIT December 7th, 1937 Mr. W. A. Robotham Rolls-Royce Ltd. Derby, England Re: Rm8/R. Dear Mr. Robotham: Your letter of November 16th to Mr. J. B. Webb has…

scan0195 Advertisement flyer for the new improved model of the General Oil Filter, detailing its features and applications.
View original record GENERAL OIL FILTER THE NEW IMPROVED MODEL - Lower In First Cost - Lower In Upkeep Cost - Improved Construction - Improved Filtration - Greater Dirt Capacity DESIGNED FOR Passenger Cars Trucks Buses…

scan0196 Promotional leaflet for 'The Economy Filter', detailing its features, benefits, and operation.
View original record THE ECONOMY FILTER Forged steel cross arm and hand screw. Top—14 gauge ribbed steel with by-pass spring. Can type cartridge — scientifically designed and packed with a milliard cell material…

scan0197 The fitting of a Tecalemit filter during engine running-in and dynamometer tests.
View original record C. Rm. SWDL CHASSIS - RE: ENGINE TEST. It is evident from H1.4/RS.17.12.37. that we must fit, during all running in operations and the engine dynamometer test, a Tecalemit filter between the oil pump…

scan0198 Using Tecalemit Filters for chassis engine tests and the necessary precautions.
View original record LA. from Rm. 1139 also 1138 Rm10/R.22.12.37. CHASSIS ENGINE TESTS. TECALEMIT FILTERS. LA17/T21.12.37. We believe that engine cleansing is so important that we can, with advantage, use Tecalemit…

scan0199 Quotation from S. Smith & Sons for 200 or 500 lots of No. 2 size Smith Oil Filters.
View original record 105 Files 1139 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION 1896 TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON.…

scan0200 Letter to S. Smith & Sons requesting a quotation for 200 or 500 Engine Oil Filters while testing is underway.
View original record ROY/Mbl5/P. 23rd Decr/37. Messrs. S.Smith & Sons (M.A.) Ltd., Cricklewood Works, LONDON. N.W.2. ----------------- Dear Sirs, As you are no doubt aware, we are testing out one of your Engine Oil…

scan0201 Letter to C.W. Nichols of S. Smith & Sons regarding correspondence, pricing and design improvements for filter components from General Filters, Inc.
View original record 1139 Rml/R. 30th December, 1937. C.W. Nichols, Esq., Messrs. S. Smith & Sons (Motor Accessories) Ltd., Cricklewood Works, N.W.2. Dear Mr. Nichols, I have now received the attached correspondence from…

scan0202 Letter to the AC-Sphinx Sparking Plug Co. regarding the favourable test results of their A.C. Filter and arranging a discussion based on price.
View original record 1139. Rm10/R. 31st December, 1937. The AC-Sphinx Sparking Plug Co.,Ltd., DUNSTABLE, Beds: (For the attention of Mr. C.N. Faulconbridge) Dear Sirs, We have now completed a series of tests on the A.C.…

scan0203 Requesting the setup of a test rig to compare four different brands of bye-pass oil filters.
View original record 1139 To HPS/W.Bell. from Rm/Swdl. Rm/Swdl.8/AP.3.1.38 TESTS OF BYE-PASS OIL FILTERS. Will you please arrange your oil pump test rig to compare the following bye-pass oil filters which we will supply.…

scan0204 Letter from AC-Sphinx Sparking Plug Co. Ltd. arranging a meeting to discuss the performance of their AC Oil Filters.
View original record 1/39 AC-SPHINX SPARKING PLUG Co. LTD. DIRECTORS: N.F. Stockbridge, W.O.Kennington, C.J.Bartlett. Telegrams: SPHINX, DUNSTABLE. DUNSTABLE, BEDS., ENGLAND. Telephone: DUNSTABLE 360. Our Ref CNF/GEB.…

scan0205 Letter to C.N. Faulconbridge of AC-Sphinx Sparking Plug Co. Ltd. arranging a meeting to discuss the AC Oil Filter.
View original record 1189 Rm3/R. 4th January, 1938. C.N. Faulconbridge, Esq., AC-Sphinx Sparking Plug Co.,Ltd., DUNSTABLE, Beds: Dear Sir, Re: AC Oil Filter. Thank you for your letter of the 3rd January. We shall be…

scan0206 Technical description and operational guide for a general oil filter, including a cross-section diagram.
View original record 1139 DIAGRAM LABELS: WRENCH SLOT FINGER RING SPRING GASKET OIL OUT FELT OIL PASSES THROUGH PERFORATED HOLES OIL IN. GASKET SCREEN CARTRIDGE MOUNTING BRACKETS FELT SCREEN PERFORATED HOLES OIL ESCAPES…

scan0207 Cross-section diagram and operational description of a general oil filter.
View original record 1139 DIAGRAM LABELS: WRENCH SLOT FINGER RING SPRING GASKET OIL OUT FELT OIL PASSES THROUGH PERFORATED HOLES OIL IN GASKET SCREEN CARTRIDGE MOUNTING BRACKETS SCREEN FELT OIL ESCAPES THROUGH PERFORATED…

scan0208 Correspondence from S. Smith & Sons regarding a comparison of a General Filter design with their own.
View original record 105 1139 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON. S. Smith &…

scan0209 Letter from S. Smith & Sons to W. A. Robotham regarding cost-saving design modifications and enclosing related documents.
View original record R.P.81 S. SMITH & SONS (Motor Accessories) LTD. CRICKLEWOOD WORKS, LONDON, N.W.2. CONTINUATION NO. 1. W. A. Robotham, Esq. 6th January 1938. Might I explain that largely as a result of my recent…

scan0210 Internal memorandum comparing the performance and longevity of their filter design against American competitor filters.
View original record S. SMITH & SONS (MOTOR ACCESSORIES) LTD. CRICKLEWOOD WORKS. Memorandum for inter-house correspondence only. To: MR. NICHOLS From: MR. GROSE Date: 5/1/38 Re: GENERAL FILTERS. I have read Mr. Robotham's…

scan0211 From S. Smith & Sons discussing the design principles of oil filters, including the texture of the cleaning element and maximising surface area.
View original record RP.290 S. SMITH & SONS (MOTOR ACCESSORIES) LTD. CRICKLEWOOD WORKS. Memorandum for inter-house correspondence only. To. MR. NICHOLS From. MR. GROSE Date. 5/1/38 - 2 - I do not wish to infer that its…

scan0212 Letter from Scammell Lorries to S. Smith & Sons about oil filter experiments and engine bore wear.
View original record R.P.81 S. SMITH & SONS (MOTOR ACCESSORIES) LTD., CRICKLEWOOD WORKS, LONDON, N.W.2. CONTINUATION NO 1139. COPY. SCAMMELL LORRIES LTD. WATFORD WEST. HERTS. Ref. PGH/ACF/T. 7500. 28th September 1937. S.…

scan0213 Inspection report detailing cylinder bore wear and crankshaft measurements.
View original record R.P.81 S. SMITH & SONS (MOTOR ACCESSORIES) LTD., CRICKLEWOOD WORKS, LONDON, N.W.2. CONTINUATION NO COPY. INSPECTION PHILLIPS MILLS. 27.8.37. CHASSIS No. 8303/S. MILEAGE 28,000 approx. ENGINE No:…

scan0214 Piston skirt dimensions and engine condition report for Chassis No. 8303/3.
View original record R.P.81 S. SMITH & SONS (MOTOR ACCESSORIES) LTD., CRICKLEWOOD WORKS, LONDON, N.W.2. CONTINUATION NO -2- 27.8.37. PHILLIPS MILLS. CHASSIS NO. 8303/3 (Cont'd) PISTON SKIRT DIMENSIONS. No.1. Top of Skirt.…

scan0215 Front cover of a leaflet for a Smith's Oil Filter.
View original record SMITH'S OIL FILTER 1139

scan0216 The Smith Oil Filter, complete with laboratory and road test results.
View original record Fig. W.1 Sump oil before fitting Smith Filter Fig. W.2. Oil from Smith Filter. Fig. W.3. Absolutely clean oil in sump which remains clean throughout life of Filter. THE SMITH OIL FILTER A description…

scan0217 Foreword explaining the function and efficiency of the Smith Oil Filter and its use with colloidal graphite.
View original record Foreword THERE is no doubt that an efficient oil filter may be an important factor in the life of an engine, particularly in regard to cylinder wear, because it is evident that if the oil in the sump…

scan0218 Article on a new oil filter by Smith Accessory, reprinted from The Automobile Engineer.
View original record A NEW OIL FILTER Extremely Effective Cleaning by the New Smith Accessory (Reprinted by courtesy of THE AUTOMOBILE ENGINEER.) For some time Messrs. S. Smith and Sons (Motor Accessories), Ltd., have…

scan0219 Diagrams and explanation of an oil filter's function and the properties of filtered oil.
View original record Fig. 1. Cut away view of washer showing raised pips to permit oil flow to central spindle. Fig. 2. General arrangement of oil filter. A. Inlet. B. Outlet. C. Slot in outlet tube. D. Filter pad. E.…

scan0220 The comparative performance of oil filters, using paper spot tests to analyse oil cleanliness on the bench and during road tests.
View original record In testing the filter, to record the state of the oil at various stages during the tests, a method was devised by which a single drop was allowed to fall from a thin wire on to a fine-grade laboratory…

scan0221 Analysis of an oil filter's components and its performance in removing contaminants and acidity from sump oil.
View original record TYPE No2 PATENT No 412204 SMITH'S OIL FILTER MADE IN ENGLAND TO AVOID EXCESSIVE ENGINE WEAR THIS CARTRIDGE SHOULD BE REPLACED WHEN OIL BECOMES VISIBLY DIRTY. A.33243. Fig. 3. Internal parts of oil…

scan0222 Letter to Messrs. Smith & Sons Ltd. discussing the principles and performance of the General oil filter.
View original record 1139 Rm7/R. 8th January, 1938. C.W. Nichols, Esq., Messrs. Smith & Sons (Motor Accessories) Ltd., Cricklewood Works, LONDON. N.W. 2. Dear Mr. Nichols, I was interested in what your Expert said about…

scan0223 Letter from S. Smith & Sons to Mr. Robotham regarding the operation of a filter and arranging a meeting to discuss its principle with the designer.
View original record 105 1139. CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY [LOGO: ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION 1918] TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE,…

scan0224 Request to order 2 dozen Tecalemit filters for use on the experimental chassis unit test beds.
View original record 1139 To Roy. c. to G/JWH. Rm/Swdl.14/JH.11.1.38. Will you please order 2 dozen Tecalemit filter of the type O.F.1054 type 123/12 for use on the experimental chassis unit test beds. Rm/Swdl.

scan0225 Letter to S. Smith & Sons (Motor Accessories) Ltd. requesting a filter for testing.
View original record 1139 Rm4/R. 13th January 1938. C.W. Nichols, Esq., Messrs. S. Smith & Sons (Motor Accessories) Ltd., Cricklewood Works, N.W.2. Dear Mr. Nichols, Thank you for your letter of the 11th January. I would…

scan0226 Letter from S. Smith & Sons arranging to send a filter sample for comparative testing.
View original record 105 SWDL. Smith filter being sent for a comparative test with our AC & General. Test on rig Pédes S.Smith & Sons (Motor Accessories) Ltd CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY TELEPHONE:…

scan0227 Letter from S. Smith & Sons regarding a No.2 Smith Oil Filter sent for testing purposes.
View original record 105 SWOC Reidex 1139 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY BY APPOINTMENT TO HIS MAJESTY THE KING ENGINEERING AND ALLIED EMPLOYERS NATIONAL FEDERATION 1896 TELEPHONE: GLADSTONE 3333 (20…

scan0228 Letter detailing the disappointing test results of a Luber-Finer oil filter and returning it for investigation.
View original record 1139, xxx 2424 January 21st.1938 Rm/IMW.11/AP. R.H.Collier Esq., South Yardley, BIRMINGHAM Dear B.D., We have had some most disappointing results with the Luber-Finer. The test consists briefly of…

scan0229 Letter regarding a test on a Luber-Finer unit, questioning its dispatch and installation.
View original record 1139P. TELEPHONE: ACOCKS GREEN 1681 (4 LINES) TELEGRAMS: COLSPAR BIRMINGHAM R. H. COLLIER & CO. LTD. SUCCESSORS TO SWIFT OF COVENTRY LTD HALLEY MOTORS LTD AND THE CLYNO ENGINEERING CO (1922) LTD. THE…

scan0230 The despatch of a trial oil filter to R.H. Collier Co. Ltd.
View original record To HD/FC. from Rm/Swdl. 1139 Rm/Swdl.2/AP.27.1.38 Will you please pack up and despatch to the following people an oil filter which we have had for trial :- Messrs. R.H.Collier Co.Ltd., Collier's…

scan0231 Letter to R.H. Collier regarding the testing and failure of a 'Luber-Finer' filter.
View original record 1139 January 27th.1938. Rm/Swdl.1/AP. R.H.Collier Esq., Collier's Corner, South Yardley, BIRMINGHAM Dear Sir, Thank you for your letter of the 25th inst. I regret the delay in returning the…

scan0232 Letter from Jervis B. Webb Company regarding a previous correspondence about an oil filter proposition.
View original record 1134 JERVIS B. WEBB COMPANY 8951 ALPINE AVENUE DETROIT, MICH. February 15th, 1938 Mr. W. A. Robotham, Rolls-Royce, Ltd., Derby, England My dear Mr. Robotham: We had a letter from you dated December…

scan0233 Translated article discussing the causes of oil degradation and the requirements for effective oil filters.
View original record Translation from "L'Auto" 16/2/38. Redex 1139 Towards less frequent oil changes [Handwritten note] SWB we should try & get hold of one of these filters for comparative purposes The introduction…

scan0234 The benefits of oil filters, particularly the 'FRAM' brand, in reducing engine wear and oil consumption.
View original record -2- h) Elimination of all acids or other harmful by-products American accessory firms have already produced a few which give every satisfaction and they are to be found in use on many passenger and…

scan0235 French article discussing the elimination of regular engine oil changes through the use of advanced filtration systems.
View original record L'Auto AUTOMOBILE L'Auto AUTOMOBILE L'Auto AUTOMOBILE PROBLÈMES ACTUELS VERS LA SUPPRESSION DES VIDANGES par Charles FAROUX NOUS savons tous, par expérience, à quel point l'emploi d'une bonne huile,…

scan0236 Letter to Dick Taylor regarding a ventilation scheme, camera results, and a General Filter.
View original record 1247 1139 Rm4/R. 23rd February, 1938. R.G.H. Taylor, Esq., Moss House, Trafford Park, MANCHESTER. 17. Dear Dick, [Handwritten note]: see 1247 [Handwritten note]: (See 1247) Many thanks for your…

scan0237 Letter regarding a leaking and underperforming oil filter returned for investigation.
View original record 1139 8 Rm/Swd1.6/MH. 25th. February 1938. The AC-Sphinx Sparking Plug Col Ltd., Dunstable, BEDS. Dear Sirs, We are returning an AC. filter for your investigation which is reported to be leaking at the…

scan0238 The concluding page of a letter.
View original record -2- 25th. February 1938. we have taken and will be returning it in the course of the next few days, for which we thank you. Yours faithfully, for ROLLS-ROYCE LTD.

scan0239 Request to dispatch an AC filter to The AC-Sphinx Sparking Plug Co. Ltd.
View original record 1139 To Hd/FC. from Rm/Swdl. Rm/Swdl.7/MH.25.2.38. Will you please despatch the AC. filter which we hand you herewith, to The AC-Sphinx Sparking Plug Co. Ltd., Dunstable, BEDS. Rm/Swdl.

scan0240 Cover letter to R.G.H. Taylor forwarding a copy of a letter from Jervis B. Webb.
View original record 1139 Rml/R. 28th February, 1938. R.G.H. Taylor, Esq., Moss House, TRAFFORD PARK. Dear Dick, Herewith a copy of a letter I have just received from Jervis B. Webb. Yours sincerely,

scan0241 Letter from AC-Sphinx Sparking Plug Co. regarding a faulty AC Oil Filter and an Oil Sediment Meter.
View original record Files AC-SPHINX SPARKING PLUG Co. LTD. DIRECTORS: N.F. Stockbridge, W.O.Kennington, C.J.Bartlett. Telegrams: SPHINX, DUNSTABLE. DUNSTABLE, BEDS. ENGLAND. Telephone DUNSTABLE 360. Our Ref: DBB/DJG Your…

scan0242 Letter from R.H. Collier & Co. Ltd. regarding test results and issues with a Luber-Finer oil filter unit.
View original record Files 1139 TELEPHONE: ACOCKS GREEN 1681 (4 LINES) TELEGRAMS: COLSPAR BIRMINGHAM R. H. COLLIER & CO. LTD. SUCCESSORS TO SWIFT OF COVENTRY LTD HALLEY MOTORS LTD AND THE CLYNO ENGINEERING CO (1922) LTD.…

scan0243 Continuation of a letter from R. H. Collier & Co. Ltd. proposing a test of a larger refiner unit.
View original record CONTINUATION SHEET L. Swindall Esq. Rolls-Royce Ltd. I would very much like to send you a further unit of the larger size. Would you give it a test under these conditions, because I am satisfied from…

scan0244 Follow-up letter from S. Smith & Sons regarding an oil filter sent for testing and a potential invoice.
View original record 105 Files SWDL. Please return this letter 1139. CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION BY APPOINTMENT TO HIS MAJESTY THE KING…

scan0245 Request to dispatch a loaned oil filter back to S. Smith & Son Ltd. after a trial.
View original record 1139- To Hd/FC. from Rm/Swdl. Rm/Swdl.4/MH.9.3.38. Will you please despatch the oil filter we hand you herewith to - S. Smith & Son (Motor Accessories) Ltd., Cricklewood Works, London, N.W.2. which is…

scan0246 Letter to S. Smith & Sons regarding the return and test results of a trial oil filter.
View original record 1139. Rm/Swdl.3/MH. Experimental Dept. Messrs. S.Smith & Sons(Motor Access- ories) Ltd., Cricklewood Works, LONDON, N.W.2. 9th. March 1938. Dear Sirs, In reply to your letter of the 4th. inst. we are…

scan0247 Request for an opinion on a Luber oil refiner for chassis B.139.BL.
View original record 1139, K/W. Rm. Pk/9.3.38. Chassis No.B.139.BL. The following is an extract from a letter received from the Car Mart Ltd., of 37, Davies Street, Grosvenor Square, W.1, and attached is descriptive…

scan0248 Advertising brochure for the Luber-finer miniature oil refinery for motors.
View original record "OIL NEVER WEARS OUT" Read what the U. S. Bureau of Standards says: "The Bureau has analyzed a considerable number of samples of reclaimed crankcase oil and found many of them do show as great…

scan0249 Promotional leaflet for the 'Luber-finer' oil refining system and its various models.
View original record Luber-finer STARTS WHERE FILTERS STOP ADD THOUSANDS OF MILES TO BOTH OIL AND ENGINE LIFE Luber-finer is a genuine oil refiner that automatically and continuously refines, decolorizes, purifies and…

scan0250 Comparative test for by-pass filters for Chassis No. B.139-BL.
View original record 1139. W/K. Pk. from Rm. Rm7/R.10.3.38. Chassis No. B.139-BL. Thank you for your Pk/9.3.38. If the Car Mart are prepared to submit one of these filters to us for test, we will give them a report on it.…

scan0251 Oil reconditioner tests for 'Luber-Finer', 'A.C.', and 'Smith' units.
View original record To Rm. from Rm/W.Bell. c. Rm/Swdl. 1139 10.3.38 OIL RECONDITIONER TESTS. 'LUBER-FINER', 'A.C.', 'SMITH' AND GENERAL! Each unit was tested separately, being connected to the pressure system of an oil…

scan0252 Test report comparing the performance and characteristics of different oil purification units.
View original record -2- GENERAL During the first 15 hours this unit was under test, the limit of purification was reached more slowly than with either the Smith or the Luber-Finer. Also there was a far greater rate of…

scan0253 Comparative tests on various oil reconditioner units.
View original record To Rm. from Rm/W.Bell. c. Rm/Swdl. 1139 Files 10.3.38 OIL RECONDITIONER TESTS. 'LUBER-FINER,' 'A.C.', 'SMITH' AND GENERAL! Each unit was tested separately, being connected to the pressure system of an…

scan0254 Comparison of the performance and limitations of various oil purification units under test.
View original record -2- GENERAL During the first 15 hours this unit was under test, the limit of purification was reached more slowly than with either the Smith or the Luber-Finer. Also there was a far greater rate of…

scan0255 Series of graphs comparing the performance of 'Luber-Finer', 'General', 'AC', and 'Smith' oil reconditioners over time.
View original record OIL RECONDITIONER TESTS "LUBER-FINER", "GENERAL", "A.C." AND "SMITH" % INCREASE PURITY/TIME TESTS: USED OIL - 75°C, PRESSURE - 30 LB/SQ. IN. % INCREASE PURITY MEASURED BY A.C. OIL SEDIMENT METER…

scan0256 Graph comparing the performance of different brands of oil reconditioners over time.
View original record OIL RECONDITIONER TESTS LUBER-FINER, GENERAL, A.C. AND SMITH DELIVERY TIME TESTS USED OIL - 75°C PRESSURE - 30 Lb/in² BY-PASS DELIVERY PTS. HR. TESTING TIME - HRS. 'A.C.' AND 'LUBER-FINER' A.C. 1st…

scan0257 Letter from S. Smith & Sons regarding a sample oil filter test and arranging a specialist meeting.
View original record 1139. CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON. S. Smith &…

scan0258 Letter to S. Smith & Sons regarding a future discussion about filters.
View original record 1139 Rm3/R. 17th March, 1938. Messrs. S. Smith & Sons (Motor Accessories) Ltd., Cricklewood Works, LONDON. N.W.2. (For the attention of Mr. C.W. Nichols). Dear Sirs, Thank you for your letter of the…

scan0259 Letter to AC-Sphinx Spark Plug Co. Ltd. concerning a recurring leak in an AC oil filter.
View original record X 1139 Rm/Swdl.3/MH. Experimental Dept. 21st. March 1938. Mr.Bennion Browne, The AC-Sphinx Spark Plug Co. Ltd., Dunstable, BEDS. Dear Sir, Further to our letter of the 25th. February, (Rm/Swdl.6/MH.)…

scan0260 Letter to AC-Sphinx Sparking Plug Co. Ltd. discussing filter failures and proposed solutions.
View original record 1189. Experimental Dept. Rm/Swdl.7/MH. 4th. March 1938. AC-Sphinx Sparking Plug Co. Ltd., Dunstable, BEDS. For the attention of Mr.Bennion Brown. Dear Sir, We thank you for your letter of the 23rd.…

scan0261 Letter discussing filter functionality, material flaws, connection unions and washer types.
View original record -2- or otherwise ways of installing your filters and would be interested in any suggestion you may have on this point. You will see, therefore, that we are doing our best to give your filter the best…

scan0262 Comparison of bye-pass oil filters from various manufacturers.
View original record COMPARISON OF BYE-PASS OIL FILTERS. In order to obtain a direct comparison regarding the relative figure of merit in cleaning oil between various maker's bye-pass filters, a rig was employed…

scan0263 Comparative report on the performance and cost of Smiths and Luber-Finer oil filters.
View original record -2- Smiths. Two Smiths Filters were submitted for trial and though possessing a cleaning rate slightly faster than the A.C. and General do not appear to have the dirt absorption capacity. The first…

scan0264 Visual comparison of by-pass filter performance using blotter spot tests over time.
View original record 1139 ① GENERAL SAMPLE N°1 58% GENERAL SAMPLE N°2 63% GENERAL SAMPLE N°3 66% GENERAL SAMPLE N°4 74% GENERAL SAMPLE N°5 78% GENERAL SAMPLE N°6 85% GENERAL SAMPLE N°7 86% GENERAL SAMPLE N°8 86% GENERAL…

scan0265 Letter from AC-Sphinx Sparking Plug Co. Ltd. about the test results of a clogged and split oil filter.
View original record 1139. AC-SPHINX SPARKING PLUG Co. LTD. DIRECTORS: N.F.Stockbridge, W.O.Kennington, C.J.Bartlett. Telegrams: SPHINX,DUNSTABLE. DUNSTABLE, BEDS.,ENGLAND. Telephone: DUNSTABLE 360. Our Ref. DBB/DJG Your…

scan0266 Continuation sheet to AC-Sphinx discussing material stress tests, filter mounting, and leak-proofing solutions.
View original record THE AC-SPHINX SPARKING PLUG Co., LTD. CONTINUATION SHEET No. 2. been due to some impurity in the sheet, and you will be interested to know that when this half pressing was put on to an expanding tool…

scan0267 Continuation sheet from AC-Sphinx Sparking Plug Co. Ltd. responding to criticisms.
View original record THE AC-SPHINX SPARKING PLUG Co., LTD. CONTINUATION SHEET No. 3. We are very much obliged to you for your useful criticisms on these points, and shall be very glad to hear from you at any time any…

scan0268 Two proposed design modifications for an 'A.C.' bye-pass filter mounting to address failures.
View original record 1139 [strikethrough]ER/HS.[/strikethrough] c. Rm/Swdl. DA.11/G.9.4.38. WRAITH 111. "A.C." BYE-PASS FILTER MOUNTING. Please receive herewith :- E.CD.597 Revised Mounting for A.C. Filter - Wraith 111…

scan0269 Modifications to a Phantom III suction oil filter to suit the revised Wraith III type steering gear.
View original record c. Rm. DX/RS. [struck through] SWDL [handwritten] DA.12/G.22.4.38. 1139 . PHANTOM 111 - SUCTION OIL FILTER TO SUIT REVISED STEERING GEAR. Please receive herewith E.CD.628 Modified Oil Filter for use…

scan0270 Attaching a copy of a letter to the AC. Co. regarding oil filter transfers.
View original record 1139. To Roy. from Rm/Swdl. Rm/Swdl.4/MH.27.4.38. We attach herewith a copy of the letter we have written to the AC. Co. in regard to oil filter transfers. Rm/Swdl.

scan0271 Letter to the AC-Sphinx Spark Plug Co. regarding the fitting of transfers on oil filters and enclosing a new drawing.
View original record Rm/Swd1.5/MH. Experimental Dept. 27th. April 1938. The AC-Sphinx Spark Plug Co., 19, Eaton Road, COVENTRY. Dear Sirs, Regarding your query as to the fitting of transfers to the Oil Filters (ZS1) you…

scan0272 Cover letter from S. Smith & Sons regarding an enclosed booklet on filtration and lubrication.
View original record 105 9. 1139. ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION 1896 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY BY APPOINTMENT TO HIS MAJESTY THE KING TELEPHONE: GLADSTONE 3333 (20 LINES)…

scan0273 Letter from R.H. Collier & Co. Ltd. regarding an unsatisfactory test of a Luber-Finer Oil Refiner and a proposal for a new demonstration.
View original record File 1139. TELEPHONE: ACOCKS GREEN 1681 (4 LINES) TELEGRAMS: COLSPAR BIRMINGHAM. R. H. COLLIER & CO. LTD. SUCCESSORS TO SWIFT OF COVENTRY LTD HALLEY MOTORS LTD AND THE CLYNO ENGINEERING CO (1922) LTD.…

scan0274 Letter from AC-Sphinx Sparking Plug Co. Ltd. regarding a blue print for the AC ZS-1 type oil filter.
View original record 1139. AC-SPHINX SPARKING PLUG Co. LTD. DIRECTORS: N.F. Stockbridge, W.O. Kennington, C.J. Bartlett. Telegrams: SPHINX, DUNSTABLE. DUNSTABLE, BEDS., ENGLAND. Telephone: DUNSTABLE 360. Our Ref:…

scan0275 Blueprint detailing an oil filter installation.
View original record CHANGE RECORD SIGN WAS No. DATE BY TRACED 414 21-5-38 G.C UNLESS OTHERWISE SPECIFIED ALL FRACTIONAL DIMENSIONS CARRY TOLERANCES OF PLUS AND MINUS .010; ALL DECIMAL DIMENSIONS PLUS AND MINUS .005,…

scan0276 'General' type bye-pass oil filter for the Phantom III engine.
View original record BY/NS. c. Rm. c. Rm/Swdl. File 1139 DA.8/G.9.6.38. PHANTOM III - 'GENERAL' TYPE BYE-PASS OIL FILTER. Please receive herewith E.CD.715 'General' Bye-Pass Filter and Oil Connections in the Vee. Phantom…

scan0277 Letter from Luber-Finer (England) Ltd. proposing the testing of their oil refiner and a meeting to present data.
View original record 1139 TELEPHONE: ACOCKS GREEN 1681 (3 lines) TELEGRAMS: "COLSPAR," BIRMINGHAM LUBER-FINER LUBER-FINER (ENGLAND) LTD. (ASSOCIATED WITH R. H. COLLIER & CO. LTD.) COLLIER'S CORNER SOUTH YARDLEY BIRMINGHAM…

scan0278 Promotional leaflet for the Luber-finer on-board oil refinery system for vehicle engines.
View original record "OIL NEVER WEARS OUT" Read what the U.S. Bureau of Standards says: "The Bureau has analysed a considerable number of samples of reclaimed crankcase oil and found many of them do show as great…

scan0279 Advertisement for Luber-finer oil refining products, detailing their function, models, pricing, and a guarantee.
View original record Luber-finer STARTS WHERE FILTERS STOP ADD THOUSANDS OF MILES TO BOTH OIL AND ENGINE LIFE Luber-finer is a genuine oil refiner that automatically and continuously refines, decolorizes, purifies, and…

scan0280 The benefits and functions of automobile oil filters, featuring a reprint from the National Bureau of Standards and an advertisement for Luber-finer.
View original record [Left Page] [Red Box Text:] Luber-finer users alone can be assured that their oil will give them perfect lubrication due to the fact that the Luber-finer has the ability to control crankcase acidity.…

scan0281 The principles of oil filtration and the problems associated with engine oil degradation.
View original record Practically all oil filters efficiently remove dust and metal particles until they become clogged. Since a considerable part of engine wear can be attributed to abrasion by these foreign particles,…

scan0282 Advertisement for the Luber-finer oil refiner, using quotes from various sources to argue that oil does not wear out.
View original record What Oil Authorities Say— “OIL NEVER WEARS OUT” Put an Oil Refinery On your Motor NEW OIL EVERY MILE — REFINED AS YOU DRIVE WITH A Luber-finer REFERENCE: KEMPE'S ENGINEER'S YEAR-BOOK 1936. SECTION VI.…

scan0283 Promotional document for the Luber-finer oil filter, arguing for its benefits over traditional oil changes.
View original record The remarkable discovery was made that such oils, used many times, and re-refined many times, actually became better oils. F. E. Rowland, Oregon State College, states : “ We have found that waste…

scan0284 Letter from British Filters Ltd. to arrange a meeting with a Mr. Swindall to discuss the General Filter.
View original record Files 1139 BRITISH FILTERS LTD. AIRCRAFT HOUSE : MARKET HARBOROUGH MARKET HARBOROUGH 2254-5. T. C. WORTH R. G. H. TAYLOR W. S. THOMPSON TCW/MM Messrs Rolls-Royce Ltd., Nightingale Road, DERBY. 27th…

scan0285 Letter to Luber-Finer (England) Ltd. concerning the testing of a new filter unit after a previous one was found faulty.
View original record 1139 Rm3/R. 27th June, 1938. R.H. Collier, Esq., Luber-Finer (England) Ltd., Collier's Corner, South Yardley, BIRMINGHAM. Dear Sir, Thank you for your letter. We note what you say about the filter we…

scan0286 Letter to British Filters Ltd. arranging a meeting to discuss a 'General' oil filter.
View original record 1139 Experimental Dept. Rm/Swdl.6/MH. 28th. June 1938. British Filters Ltd., Aircraft House, Market Harborough. For the attention of Mr.Worth. Dear Sirs, In reply to your letter of the 27th. inst. we…

scan0287 Letter from Luber-Finer detailing test parameters for a model 300 oil filter.
View original record TELEPHONE: ACOCKS GREEN 1681 (3 lines) 1139 TELEGRAMS: "COLSPAR," BIRMINGHAM LUBER-FINER LUBER-FINER (ENGLAND) LTD. (ASSOCIATED WITH R. H. COLLIER & CO. LTD.) DIRECTORS: A. W. BLUNT R. H. COLLIER H.…

scan0288 Request to British Filters Ltd. to send two filters to Paris for a trial on customer vehicles.
View original record 1139. Rm4/R. 5th July, 1938. British Filters Ltd., Aircraft House, MARKET HARBOROUGH. Dear Sirs, Our Paris Office has expressed a wish to try some of your filters on customers' cars running in that…

scan0289 Request for the return of oil samples to Mr. T. Worth at British Filters Ltd.
View original record 1139 To Hd/FC. from Rm/Swdl. Rm/Swdl.14/MH.6.7.38. Will you please return the oil samples we hand you herewith to - Mr.T.Worth, British Filters Ltd., Aircraft House, Market Harborough. Rm/Swdl.

scan0290 Letter to British Filters Ltd. discussing the performance of their 'General' oil filter based on oil samples.
View original record 1139 Experimental Dept. Rm/Swdl.12/MH. 6th. July 1938. British Filters Ltd., Aircraft House, MARKET HARBOROUGH. For the attention of Mr.T.Worth. Dear Sirs, Mr.Robotham has shown me samples of oil…

scan0291 Follow-up inquiry regarding the return of an AC Filter sent for examination to the AC-Sphinx Sparking Plug Co. Ltd.
View original record 1139 Files Rm/Swdl. G/WFH/ABF.30/MG.7.7.38. On the 26th February, under your reference Rm/Swdl.7/MH.25.2.38, you forwarded to The AC-Sphinx Sparking Plug Co. Ltd., 1 - AC Filter for examination and…

scan0292 Letter from British Filters Ltd. confirming the dispatch of two filters to Paris.
View original record 1139 BRITISH FILTERS LTD. : AIRCRAFT HOUSE : MARKET HARBOROUGH MARKET HARBOROUGH 2254-5. T. C. WORTH R. G. H. TAYLOR W. S. THOMPSON TCW/MM Your ref: Rm4/r Messrs Rolls-Royce Ltd., Nightingale Road,…

scan0293 Letter from British Filters Ltd. regarding the dispatch of four filter cases, a 'sale or return' invoice, and a detailed drawing of the filter body.
View original record BRITISH FILTERS LTD. AIRCRAFT HOUSE : MARKET HARBOROUGH MARKET HARBOROUGH 2254-5. T. C. WORTH R. G. H. TAYLOR W. S. THOMPSON TCW/MM Your ref: Rm/Swdl.12/MH Messrs Rolls-Royce Ltd., Nightingale Road,…

scan0294 Requesting the manufacture of pipes and a bracket for a 'General' type oil filter.
View original record r 1139 To HPS. from Rm/Swdl. Rm/Swdl.2/MH.9.7.38. Will you please make the necessary pipes and bracket to house a "General" type of oil filter in the same position as the AC filter is housed on…

scan0295 Choked and leaking AC oil filter returned for examination.
View original record 1139 To G/WFH. from Rm/Swdl. Rm/Swdl.4/MH.11.7.38. With reference to your memo G/WFH/ABF.30/MG.7.7.38 regarding the AC. oil filter returned by us to AC. for inspection and report, we do not expect…

scan0296 Official order be placed with British Filters Ltd for four 'General' filters.
View original record 1139 To Roy. from Rm/Swdl. c. G/JWH. Rm/Swdl.5/MH.11.7.38. Will you please pass an official orderto:- British Filters Ltd., Aircraft House, Market Harborough. for 4 'General' filters ordered by us in…

scan0297 Despatch of trial parts, including oil filters, pistons and rings for Bentley engines.
View original record 1/39 also 1245 W/P - Sr. Rm/Swdl.17/JH.15.7.38. We are despatching the following parts for your trial in accordance with Rm's. instructions. (1) Complete set of oil pipes for testing the "General"…

scan0298 Modifications and fitting instructions for a 'General' Bye-Pass Filter on Wraith III & Bentley III cars.
View original record To BY/NS. c. Rm. c. Rm/Swdl. 1139. Files Da.2/N.16.7.38. Wraith III & Bentley III - "General" Bye-Pass Filter. -------------------- Please receive herewith E.CD.799 - "General" Bye-Pass Filter -…

scan0299 Letter from Luber-finer (England) Ltd. proposing a meeting with their European Representative, Mr. Solomon.
View original record 1139 TELEPHONE: ACOCKS GREEN 1681 (3 lines) TELEGRAMS: "COLSPAR," BIRMINGHAM LUBER-FINER LUBER-FINER (ENGLAND) LTD. (ASSOCIATED WITH R. H. COLLIER & CO. LTD.) COLLIER'S CORNER SOUTH YARDLEY BIRMINGHAM…

scan0300 Customer testimonial letter regarding the performance and benefits of a 'Luber-finer' oil filter.
View original record COPY. M. Levi, C/o Art Floorings, Government Gate Road, Parel, Bombay. 13th July, 1938. Messrs. A. Hyland, Limited, Hughes Road, Bombay. Dear Sirs, re Luber-finer It is with great pleasure that I…

scan0301 Letter to British Filters Ltd. regarding the requirements for a 'General' filter housing, requesting a sample and quotation.
View original record 1139. Rm/Swdl.2/MH. Experimental Dept. 12th. August 1938. British Filters Ltd., Aircraft House, MARKET HARBOROUGH. For the attention of Mr.T.Worth. Dear Sirs, We now have particulars etc. of what is…

scan0302 Letter from British Filters Ltd. regarding the production of a General Filter and requesting estimated order quantities for calculating discounts.
View original record 1139, BRITISH FILTERS LTD. AIRCRAFT HOUSE : MARKET HARBOROUGH T. C. WORTH R. G. H. TAYLOR W. S. THOMPSON MARKET HARBOROUGH 2254-5. TGW/MM Your ref: Rm/Swdl.2/MH Messrs Rolls-Royce Ltd., Nightingale…

scan0303 Requesting comparative tests on two types of oil filters.
View original record To HPS. 1139 Rm/Swdl.36/JH.18.8.38. OIL FILTERS. Will you please instruct for W.Bell to carry out comparative tests on his rig between the "frame" type of filter and the "General" both of which we…

scan0304 Letter to British Filters Ltd. regarding a model filter, its testing, requested modifications, and a request for quotations.
View original record 1139. EXPERIMENTAL DEPARTMENT. Rm/Cwdl.7/JH. 30th August, 1938. The British Filters Ltd., Aircraft House, Market Harborough. For the attention of Mr. Worth. Dear Sirs, We thank you for your letter of…

scan0305 Letter to British Filters Ltd. requesting the supply of 3 filters with specific modifications to the design.
View original record 1139. EXPERIMENTAL DEPARTMENT. Rm/Swdl.3/JH. 2nd. September, 1938. British Filters Ltd., Aircraft House, Market Harborough. For the attention of Mr. Worth. Dear Sirs, Further to our letter of the 30th…

scan0306 Letter from British Filters Ltd. confirming a change to the text on a filter lid.
View original record BRITISH FILTERS LTD. : AIRCRAFT HOUSE : MARKET HARBOROUGH T. C. WORTH R. G. H. TAYLOR W. S. THOMPSON TCW/MM Your ref: Rm/Swd1.7/JH [Handwritten: 1139.] MARKET HARBOROUGH 2254-5. 2nd September 1938…

scan0307 Internal memorandum requesting an official order be placed for filters for experimental B.60 engines.
View original record 1139. To Roy. c. to G/JWH. c. to HPS/WSC. Rm/Swdl.2/JH.2.9.38. Will you please pass an official order to The British Filters Ltd., Aircraft House, Market Harborough, for 3 General filters EB.4170…

scan0308 Proposed design to stiffen the Phantom III pressure oil filter element to prevent collapse, with a request for experiments on different reinforcement options.
View original record 1139 BY/NS. c. Rm. c. Rm/GWH. c. Rm/Swdl S.DA.S/G.8.9.38. PHANTOM 111 - PRESSURE OIL FILTER WITH STIFFENED ELEMENT. Please receive herewith :- E.CD.876 Stiffened Element for Pressure Oil Filter -…

scan0309 Invitation from Luber-Finer (England) Ltd. to visit their stand at the Motor Exhibition at Earls Court.
View original record 1139 TELEPHONE: ACOCKS GREEN 1681 (3 lines) TELEGRAMS: "COLSPAR," BIRMINGHAM LUBER-FINER LUBER-FINER (ENGLAND) LTD. (ASSOCIATED WITH R. H. COLLIER & CO. LTD.) COLLIER'S CORNER SOUTH YARDLEY BIRMINGHAM…

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