Rolls-Royce Archives
| Identifier | Entry | ||
| img001 | The Bendix Aviation Corporation's two-speed supercharger, including a diagrammatic sketch of the drive employed. | ||
| View original record | USA COPY OF REPORT RECEIVED FROM Rn. IN U.S.A. DATED 10.3.34. To Sg. From Hs/Rs. c. to Hor. c. to Rg. c. to H. c. to By. c. to Tay. c. to L. c. to Lf. THE BENDIX AVIATION CORPORATION. Hs/Rs/3/KW.… | ||
| img002 | The benefits of a two-speed supercharger and the operation of an automatic variable pitch propellor. | ||
| View original record | -2- The claim of the two-speed supercharger is that, by using a low speed drive up to 5000 ft. about 50 more H.P. are available than if a high speed drive were used and the blower throttled to give… | ||
| img003 | Description of the operation and performance of a semi-automatic transmission developed by the Eclipse Company. | ||
| View original record | -3- AUTOMATIC TRANSMISSION. The Eclipse Company have developed a semi-automatic transmission which appears to me to be more practical than most. It is easier to describe its performance on the road… | ||
| img004 | Design, advantages, and disadvantages of a constant mesh helical gearbox. | ||
| View original record | -2- Internally the box is of conventional design except for :- 1. Centrifugally-operated multiplate clutch. 2. Two free wheel clutches. 3. Two small cam rings. The gears, of course, are constant mesh… | ||
| img005 | With a diagram explaining the operation and advantages of a two-speed supercharger. | ||
| View original record | To: Mr. Hives From: Mr. Robotham THE BENDIX AVIATION CORPORATION Two Speed Superchargers [Diagram annotations] Free wheel clutch Low Speed Drive High Speed Drive Centrifugal Clutch fitted as in our… | ||
| img006 | Description and performance review of an automatic variable-pitch propeller. | ||
| View original record | HS. - page 2 - March 10,1934 VARIABLE PITCH PROPELLOR This is entirely automatic. The whole propellor hub is free to float one or two inches endwise except for the restraint imposed by a number of… | ||
| img007 | Semi-automatic transmission developed by the Eclipse Company, detailing its performance and design. | ||
| View original record | HS. -page 3- March 10, 1934 AUTOMATIC TRANSMISSION The Eclipse Company have developed a semi-automatic transmission which appears to me to be more practical than most. It is easier to describe its… | ||
| img008 | Page 4 of a gearbox analysis, listing disadvantages and a summary comparison. | ||
| View original record | HS. -page 4.- March 10, 1934 4. Utilises 90% normal gearbox parts. 5. Prevents the engine being over-revved on the lower gears. Disadvantages: 1. Free-wheeling in the lower gears. 2. Appreciable… | ||
| img009 | Urgency of a £300 payment to Mr. Inskip. | ||
| View original record | Payment of £300 to Mr.Inskip. U S a TO: Hs. D17/DL23.3.34. With reference to Sg16/E22.3.34; is this matter sufficiently urgent for us to cable the amount, or will it do if we send a draft. D.… | ||
| img010 | Recommendation to cable a payment of 300 dollars to Mr. Inskip for the purchase of parts. | ||
| View original record | U S A To D. From Hs. Hs.5/MJ.26.3.34. Replying to D17/DL.23.3.34. Payment of 300 dollars to Mr. Inskip. We recommend that you cable this amount as we are very anxious that there shall be no delay in… | ||
| img011 | Letter from Cuno Engineering Corp. regarding the shipment of radiator control valves and potential patent licensing. | ||
| View original record | The Cuno Engineering Corporation MANUFACTURERS OF FILTERS FOR ALL PURPOSES ELECTRICAL AUTOMOTIVE EQUIPMENT Meriden, Conn. CHARLES H. CUNO PRESIDENT February 14, 1934. Mr. W. A. Robotham, c/o Rolls… | ||
| img012 | List of Delco parts and their corresponding prices. | ||
| View original record | Delco parts - Coil, ignition - 1.60 Starter motor - 8.13 Generator - 13.65 Distributor - 7.35 | ||
| img013 | Parts and cost list for the front frame and suspension of a La Salle car. | ||
| View original record | FRONT FRAME AND SUSPENSION PARTS FOR ROLLS ROYCE, LIMITED La SALLE CAR LaSalle frame 6-201575 - Complete front suspension parts, less radiator. Complete with shock clamps standard setting. Brake gear… | ||
| img014 | Price and specification list for various V-16 and V-12 Cadillac models, including color and upholstery options. | ||
| View original record | For Mr. Robotham V-16 Cadillac 7-P. Sedan Style 6275-S Price: $6500 list Price includes optional wheel equipment and ornament. 7-P. Limousine Style 6275 Price: $7000 list Price includes optional wheel… | ||
| img015 | Pistons ordered for Bentley. | ||
| View original record | Piston's ordered for Bentley | ||
| img016 | Letter from the Aluminum Company of America discussing the suitability of a Dodge piston for experimental testing. | ||
| View original record | Aluminum Company of America 2211 DUNN ROAD Detroit, Mich. March 13, 1934 Mr. W. Arthur Robothan, Detroit Athletic Club, West Adams Street, Detroit, Michigan. Dear Mr. Robothan:- Enclosed is blue print… | ||
| img017 | Blueprint showing a detailed cross-section of a mechanical component with annotations. | ||
| View original record | G-G, F-F, E-E, D-D, C-C, B-B, A-A, Z, Y, X, TO ¢ OF 3/32 DRILL, TO, ¢ OF 1/2 R. & TO, BOTTOM OF 1/16 SAW, 3.226 DIA., 3.231, PRO 1/16 HIGH ON ¢, .064 x 45° ON DIA., 3.2485 CAM, 3.2480 GRIND, 22 1/16,… | ||
| img018 | Blueprint showing drilling instructions and dimensions for a circular component. | ||
| View original record | 9/32 DRILL - 2 HOLES BEFORE SAWING 9/32 DRILL - 2 HOLES THRU EACH BOSS Grid Letters Vertical: V, U, T, S, R, Q, P, O, N, M Grid Letters Horizontal: L, K, J, I, H, G, F, E Dimensions: 20°, 3/16 R,… | ||
| img019 | Blueprint showing detailed cross-sections and dimensions for a piston. | ||
| View original record | BREAK CORNERS OF ALL RING GROOVES NOT TO EXCEED .010R, TO BE SQUARE WITH, DIA., 2 1/2 DIA., 13/64, 3/16, 9/64, 3/64, 3/8, .328, .318, 1/8, 1/16, 1/64, 4025, 4000, 9/16, 3/8, 5/32, 1/32 R, 5/16, .370,… | ||
| img020 | Blueprint for a machined circular component with specifications for drilling and grinding. | ||
| View original record | ..OOK IN 6 INCHES 13/64 .602 5/8 7/32 5/32 14/32 9/32 R 9/32 3/4 RAD 5° 20° 70° 40° 5/32 DRILL - 10 HOLES IN ¢ OF 7/16 GROOVE CAM GRIND SHOWN ON REVISIONS D C B A PREVIOUS CHANGED TO SEE DO NOT SCALE… | ||
| img021 | Blueprint detailing specifications and manufacturing instructions for a mechanical component with ring grooves. | ||
| View original record | SIDES OF RING GROOVES MUST BE SMOOTH, FLAT, & RUN TRUE WITH SKIRT O.D. - THE BOTTOM OF GROOVES MUST BE SQUARE WITH THE SIDES .1255 .1265 .125 .126 .1875 .1885 GRIND CHAMFER SAW - 2 SLOTS BEFORE FINISH… | ||
| img022 | Blueprint detailing manufacturing specifications for piston ring grooves and skirt. | ||
| View original record | SIDES OF RING GROOVES MUST BE SMOOTH, FLAT, & RUN TRUE WITH SKIRT O.D. - THE BOTTOM OF GROOVES MUST BE SQUARE WITH THE SIDES .1255 / .1265 .125 / .126 .1875 / .1885 12/32 3/16 7/64 34/32 C 3/32 GRIND… | ||
| img023 | Blueprint drawing by the Aluminum Company of America for a Lynite T-Slot Piston for Chrysler Corp. | ||
| View original record | (1) 1/32 DRILL BEFORE SAWING 3 1/4 Dodge ALUMINUM COMPANY OF AMERICA CLEVELAND, OHIO DRAWING OF LYNITE T-SLOT PISTON 3 1/4 DIA. FOR CHRYSLER CORP. CUSTOMERS' DRAWING PLANT DRAWING SYMBOL CDN D-7650… | ||
| img024 | Letter from Bohn Aluminum & Brass Corp confirming an order for connecting rod bearings for Cadillac Motor Car Co. | ||
| View original record | BOHN ALUMINUM & BRASS CORPORATION BOHNALITE & BOHNOLLOY PRODUCTS DETROIT, U.S.A. February 14, 1934 Mr. Rowbottom, c/o Cadillac Motor Car Co., Detroit, Michigan. Dear Mr. Rowbottom: Confirming our… | ||
| img025 | Request for payment authorization for an invoice from Allison Engineering Co. for main bearings and materials. | ||
| View original record | Hs. C to Roy U.S.A. G/Gn/CA.6/DN.20.3.34. We have received an invoice from the Allison Engineering Co., Indianapolis, Indiana, dated the 19th. ult. details of which are shown below. If these Bearings… | ||
| img026 | Authorizing the settlement of an account for satisfactory bearings and material. | ||
| View original record | To G/Cn. From Hs. c. to Roy. Hs.4/MJ.29.3.34. Replying to G/Cn./CA.6/DN.20.3.34. Will you please arrange to settle this account as these bearings and material have been received and are satisfactory.… | ||
| img027 | Cablegram from Indianapolis regarding a two-week parts completion time. | ||
| View original record | Commercial Cables CLARENCE H. MACKAY, PRESIDENT. 95, COLMORE ROW, BIRMINGHAM. TELEPHONE. CENTRAL 2084 (3 LINES). PLEASE SEND YOUR REPLY "Via COMMERCIAL." Received at 9.54 M. HJO ++++++ ++++++11… | ||
| img028 | Cablegram advising of a Graham Paige car shipment aboard the SS American Farmer, expected in London around April 22nd. | ||
| View original record | Commercial Cables CLARENCE H. MACKAY, PRESIDENT Handed in (Local Standard Time) At 10.50AM 31ST On (This information is only supplied in Full-rate messages.) 95, COLMORE ROW, BIRMINGHAM All America… | ||
| img029 | Letter from Aluminum Company of America concerning an order for fourteen Chrysler pistons, their machining, rings, and Alumiliting process. | ||
| View original record | Aluminum Company of America 3311 DUNN ROAD Detroit, Mich. March 16, 1934 Mr. W. Arthur Robotham, Detroit Athletic Club, Detroit, Mich. Dear Mr. Robotham:- Enclosed is our marked up blue print ND-7650… | ||
| img030 | Partial blueprint detailing cross-sections and machining instructions for a circular mechanical component. | ||
| View original record | Not necessary head to sb TO C/L OF 5/32 DRILL, TO C/L OF 1/8 R, & TO BOTTOM OF 1/16 SAW 3.226 DIA. 3.231 PROJ 1/16 HIGH ON C/L .066 X 1/8" ON DIA. 3.2485 CAM 3.2480 GRIND 2 9/16 1 7/64 1 1/64 1 3/64… | ||
| img031 | Blueprint detailing drilling instructions and dimensional callouts for a component. | ||
| View original record | 5/32 DRILL - 2 HOLES BEFORE SAWING 5/32 DRILL - 2 HOLES THRU EACH BOSS 20° 35° 7/32 3/8 1/2 25/32 9/16 1 1/8 7/16 41/64 1 29/32 V U T S R Q P O N M L K J I H G F E | ||
| img032 | Blueprint cross-section of a piston with detailed dimensions and manufacturing notes. | ||
| View original record | Handwritten notes: Necessary for piston particularly clean up Printed notes: BREAK CORNERS OF ALL RING GROOVES NOT TO EXCEED .010R TO BE SQUARE WITH O.D. OF SKIRT WITHIN CORE DIA. Handwritten notes… | ||
| img033 | Blueprint for a cam grind component showing detailed dimensions and drilling instructions. | ||
| View original record | Handwritten top right: Correct Top centre: .0015 IN 4 INCHES Drawing Annotations: 5°, .602, 7/32, 5/32, 14/32, 5R/32, 20°, 7/8, 1 3/4, 5/32 DRILL - 10 HOLES, IN C/L OF 3/16 GROOVE Title: CAM GRIND… | ||
| img034 | Blueprint with a cross-section view and manufacturing instructions for a component with ring grooves, likely a piston. | ||
| View original record | SIDES OF RING GROOVES MUST BE SMOOTH, FLAT, & RUN TRUE WITH SKIRT O.D. - THE BOTTOM OF GROOVES MUST BE SQUARE WITH THE SIDES .1255/.1265 .125/.126 .1875/.1885 GRIND CHAMFER 1/16 SAW - 2 SLOTS BEFORE… | ||
| img035 | Blueprint of a Lynite T-Slot Piston drawn by the Aluminum Company of America for Chrysler Corp. | ||
| View original record | 1/2" DRILL BEFORE SAWING chucking grooves 11744 ALUMINUM COMPANY OF AMERICA CLEVELAND, OHIO DRAWING OF LYNITE T-SLOT PISTON 3 1/4 DIA. FOR CHRYSLER CORP. CUSTOMERS' DRAWING PLANT DRAWING SYMBOL DN… | ||
| img036 | Overview of the features of the new La Salle Car, a Cadillac product. | ||
| View original record | H.S-L To ag. from Hs/Rm. c. to Nor. c. to L. c. to Hy. c. to De. c. to Edy. c. to EV. The New La Salle Car. Latest Cadillac Product selling for £300 in U.S.A. This is an interesting Car as it is… | ||
| img037 | List of technical features including a graphite block clutch, steering, radiator cowl, thermostat, and an automatic choke. | ||
| View original record | -2- HS/Ra.1/KW.4.4.34. (11) Graphite block clutch thrust. (12) Marles steering. (13) Radiator cowl improving efficiency 10%. (14) Thermostat bye pass type of temperature control. (15) Automatic… | ||
| img038 | The performance and practicality of supercharging using a centrifugal blower. | ||
| View original record | SUPERCHARGING BY CENTRIFUGIAL BLOWER. GRAHAM PAIGE Contrary to expectations, this method of car supercharging appears to be practical and efficient. The blower is perfectly silent judged from the… | ||
| img039 | Notes on engine power increase, supercharger performance, and noise reduction. | ||
| View original record | Owing to the fact that the II boost pressure obtained is only light up to 2000 R.P.M. it has not been found necessary to change the engine compression ratio which remains at 6.72-1. The power of the… | ||
| img040 | Engine performance regarding fuel, cooling, oil temperatures, and component specifications. | ||
| View original record | III/ reduces induction pipe roar, its own intake hiss being easily dealt with by an ordinary A.C. cleaner. FUEL. The engine will run on the ordinary American fuel (which I believe has an octane value… | ||
| img041 | The design of big end bearings and findings on using a plain choke carburetter with a centrifugal blower. | ||
| View original record | BIG END BEARINGS. Interesting in that the sideways location is on the steel rod instead of white metal. This gives a greater effective big end length, stronger rod and a much cheaper construction.… | ||
| img042 | The design features of a supercharger, including petrol management, construction, and engine speed limitation. | ||
| View original record | the only heat now used being a water jacket round the blower. Petrol Building up in Blower. They have an ingenious scheme for preventing petrol building up in the blower, they also have a continuous… | ||
| img043 | Summary of the performance of a supercharged car and its blower device. | ||
| View original record | men. They know as an approximate figure that the blower efficiency is less than 50%, but they do not know how to do any better to get the blower silent and also effective over a considerable speed… | ||
| img044 | Report evaluating a Graham supercharged car, commenting on its engine, silence, and handling. | ||
| View original record | for a number of years on aircraft engines and therefore its design should present no difficulties. we are familiar with its design. The Graham engineers impress one as being practical individuals who… | ||
| img045 | Graph comparing intake manifold pressure and vacuum against engine RPM for supercharged and non-supercharged engines. | ||
| View original record | INTAKE MANIFOLD PRESSURE 3 1/4 X 4 SUPERCHARGED ENGINE RATIO SUPERCHARGER TO CRANKSHAFT 5.26 : 1 PRESSURE ATMOSPHERE LINE VACUUM INTAKE MANIFOLD VACUUM 3 1/4 X 4 ENGINE NOT SUPERCHARGED CARBURETOR… | ||
| img046 | Graph showing the effect of a supercharger on engine power and efficiency for a Graham Model 67 & 69 engine. | ||
| View original record | FIRM GRAHAM MODEL 67 & 69 SERIAL NO. TEST NO. 526-4-34 NO. CYL. 8 BORE 3 1/4 STROKE 4 DISPLACEMENT 265.4 COMPRESSION RATIO DATE FUEL GASOLINE For Details see Specification Sheet PAGES 6, 8, 14 and Log… | ||
| img047 | Telegram received by telephone from New York concerning valve tests and head distortion issues. | ||
| View original record | U.S.A. Western ROLLS-ROYCE LTD. MD 13 JAN 1934 TELEGRAM RECEIVED BY TELEPHONE. Time Received: 9-44 Date: 13/1/34 To: Nylint R.D. By: WDA from: New York HH Send resume Ethyl's valve tests Athletic Club… | ||
| img048 | Telegram received by telephone with instructions for an exhaust valve and boost pressure for the Rye engine. | ||
| View original record | D.S.A. RR. 1448. 112 BKS.) (47496-10-9-33) 2/3770- ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Date: 3 exhaust valve Should be inlet Rye for three pounds boost FROM: "Peter Robotham THIS SHEET… | ||
| img049 | Short typed message concerning the arrival of Hives in New York and the non-arrival of parts. | ||
| View original record | D.S.A. NEW YORK JAN. 10TH. 1934. HIVES ARRIVED NEW YORK TUES PARTS HAVE NOT ARRIVED ALLISONS INVESTIGATING AND PROCEED THERE NEXT TUES COVERLEY | ||
| img050 | Night letter telegram to Allison Engineering Co. in Indianapolis concerning Curtiss bearings. | ||
| View original record | U.S.A. H/32 19.1.34. NIGHT LETTER TELGRAM. COVERLY, ALLISON ENGINEERING CO., INDIANAPOLIS, U.S.A. HAVE YOU CONFIRMED THAT CURTISS ARE FREE FROM TROUBLE WITH BEARINGS. WIRE YOUR ADDRESS. HIVES. ROYCAR. | ||
| img051 | Letter from Wilcox-Rich Corporation to Mr. Rowbotham regarding a potential visit to the Packard plant. | ||
| View original record | WILCOX-RICH CORPORATION DETROIT, MICHIGAN EXECUTIVE OFFICES 9771 FRENCH ROAD DETROIT PLANTS SAGINAW, MARSHALL BATTLE CREEK February 3, 1934 Dict. 2-2-34 [Handwritten: STO See me Hs] Mr. Rowbotham, c/o… | ||
| img052 | Letter from Wilcox-Rich Corporation discussing the design and function of different hydraulic tappets, including the Pierce-Arrow and Chrysler types. | ||
| View original record | WILCOX-RICH CORPORATION DETROIT, MICHIGAN EXECUTIVE OFFICES 9771 FRENCH ROAD DETROIT February 3, 1934 Dict. 2-2-34 PLANTS SAGINAW, MARSHALL BATTLE CREEK Mr. Rowbotham, c/o Detroit Athletic Club… | ||
| img053 | Letter from Wilcox-Rich Corporation discussing the development and benefits of a new hydraulic tappet design for engines. | ||
| View original record | WILCOX-RICH CORPORATION 2. Mr. Rowbotham February 3, 1934 This entire tappet construction is just one of a lot of little tricks and points that have been developed by numerous trials and it is likely… | ||
| img054 | Technical drawing of a valve tappet for a Chrysler Imperial engine. | ||
| View original record | ALLOWABLE VARIATION ON DIMENSIONS NOT OTHERWISE SPECIFIED TO BE PLUS OR MINUS .010 GRIND SEAT CONCENTRIC WITH STEM WITHIN .001 TOTAL INDICATOR READING FINISH NO. HEAT TREATMENT NO. ALT. LTR.… | ||
| img055 | Blueprint for a poppet valve for a Pierce Arrow 12 & V16 engine, from the Wilcox-Rich Corporation. | ||
| View original record | FINISH NO. HEAT TREATMENT NO. ALLOWABLE VARIATION ON DIMENSIONS NOT OTHERWISE SPECIFIED TO BE PLUS OR MINUS .010 GRIND SEAT CONCENTRIC WITH STEM WITHIN TOTAL INDICATOR READING DIMENSIONS: 3.384 2… | ||
| img056 | Blueprint for a Chrysler hydraulic tappet. | ||
| View original record | FINISH NO. HEAT TREATMENT NO. ALLOWABLE VARIATION ON DIMENSIONS NOT OTHERWISE SPECIFIED TO BE PLUS OR MINUS .010 GRIND SEAT CONCENTRIC WITH STEM WITHIN TOTAL INDICATOR READING 3.411 3.426 2 7/8 3/4… | ||
| img057 | Blueprint showing a cross-sectional view of a mechanical component. | ||
| View original record | SECTION | ||
| img058 | Blueprint detailing valve lift specifications and component dimensions. | ||
| View original record | 1.500 3.166 1.166 B VALVE LIFT (INT.) .302 VALVE LIFT (EXH.) .245 | ||
| img059 | Blueprint showing a cross-section of a mechanical assembly with part callouts. | ||
| View original record | TG-902, TG-903, TG-904, BB, A | ||
| img060 | Blueprint showing cross-section and side views of a camshaft component. | ||
| View original record | B A ¢ OF CAMSHAFT | ||
| img061 | Blueprint cover with a handwritten note about drilling for seepage clearance. | ||
| View original record | ALT. LTR. ALTERATION DATE SEEPAGE DRILLED THROUGH HOLE AND THROUGH CLEARANCE WHEN TAPPET AND GUIDE AT FRONT | ||
| img062 | Blueprint of a hydraulic tappet layout for a Waukesha Motor Co. engine. | ||
| View original record | T-1747 WILCOX-RICH CORP. DETROIT, MICHIGAN NAME: HYDRAULIC TAPPET LAYOUT FOR WAUKESHA MOTOR CO. MATERIAL: ENGINE #XAH DR: GM CKD: RSJ SCALE: FULL APR: DATE: 12-7-33 DRG. NO. TL-561 | ||
| img063 | Letter from Wilcox-Rich Corporation providing information on torches used for applying Stellite. | ||
| View original record | WILCOX-RICH CORPORATION DETROIT, MICHIGAN EXECUTIVE OFFICES 6771 FRENCH ROAD DETROIT PLANTS SAGINAW, MARSHALL BATTLE CREEK February 5, 1934 Rolls Royce, Ltd., Nightingale Road, Derby, ENGLAND. Att:… | ||
| img064 | Table correlating car speed in M.P.H. with the R.P.M. of various components for an axle ratio of 4.25. | ||
| View original record | CAR SPEED vs. ENGINE R.P.M., ETC. - 40S - AXLE RATIO 4.25 Car Speed M.P.H. Factor | Engine R.P.M. | Camshaft Distributor R.P.M. .5 | Generator R.P.M. 1.51 | Water Pump R.P.M. 1.3 | Rear Wheel R.P.M.… | ||
| img065 | Attached letter received from the Wright Aeronautical Corporation. | ||
| View original record | S/W To Hs. from P. U.S.A. P2/JL.8.3.34. Copy to Nor. Please see the attached copy of a letter that we have received from the Wright Aeronautical Corporation. Do you know if this is the information for… | ||
| img066 | Cover letter from Wright Aeronautical Corporation listing enclosed reports, instruction books and drawings. | ||
| View original record | COPY WRIGHT AERONAUTICAL CORPORATION, 1120 East 19th Street, Paterson, N.J. U.S.A. Rolls-Royce Limited, 14-15, Conduit Street, London, England. 25th February, 1934. Gentlemen:- We are pleased to… | ||
| img067 | Confirming the dispatch of documents related to the 'Conqueror' and the temporary retention of others. | ||
| View original record | S/W To Hs. from F. Copy to Wor. Rm. [Handwritten:] F3/JL.24.3.34 Hs.10/MJ.8.3.34. Please find herewith Shipping Order referring to the various documents which Rm. asked for, and the "Conqueror"… | ||
| img068 | Shipping order from Wright Aeronautical Corp. for experimental documents sent to London. | ||
| View original record | WRIGHT AERONAUTICAL CORPORATION PATERSON, N. J. G FORM 267 SHIPPING ORDER NO. B-5992 SUPPLEMENT DATE 3/2/34 REFERENCE SHIP TO: Rolls Royce Limited 14-15 Conduit Street London, England CHARGE TO:… | ||
| img069 | Requesting the return of a Letter of Credit and List of Correspondents following a trip to America. | ||
| View original record | TO: Rm. D18/DL10.4.34. Please return to me the Letter of Credit which you had before you went to America, and the List of Correspondents, so that these may be sent to the Bank. You will no doubt in… | ||
| img070 | With the address of the Central Hanover Trust Co. in New York. | ||
| View original record | Central Hanovera Trust Co 5TH Avenue New York | ||
| img071 | Sending instruction books for Wright Aeronautical 'Whirlwind' and 'Cyclone' engines. | ||
| View original record | S/W. To Hs from Py/B.H.O. Copy to Wor. At Colonel Fell's request we are sending you a further three instruction books applicable to various engines of the Wright Aeronautical Association. Two books… | ||
| img072 | Cashed Letter of Credit and a mislaid list of correspondents. | ||
| View original record | To D. from Hs/Rm: Hs/Rm.10/KW.13.4.34. Referring to Dl8/DL.10.4.34, my Letter of Credit was completely cashed, and in consequence was left with the last Correspondent, which was The Central Hanover &… | ||
| img073 | Clarifying the date and duration of a flight that took place in America. | ||
| View original record | To D. from Hs/Rm; Hs/Ru.9/KW.13.4.34. Referring to DlS/DL.10.4.34, the only flying I did while in America was on Friday March 9th, for one hour. Hs/Rm. | ||
| img074 | Letter to Graham-Paige Motors Corporation requesting data on their worm drive technology. | ||
| View original record | Exptl. Dept. HS/Rn.14/KW. 12th April, 1934. F.F. Kishline, Esq., Graham-Paige Motors Corporation, Detroit, Michigan, U.S.A. Dear Sir, Thank you for your letter of March 28th. I have received a cable… | ||
| img075 | Letter from the President of Rolls-Royce of America to W. A. Robotham acknowledging receipt of funds and providing an accounting of expenditures for parts. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. ROLLS-ROYCE WORKS SPRINGFIELD, MASSACHUSETTS LONDON AND DERBY, ENGLAND BREWSTER & CO. LONG ISLAND CITY, N.Y. NEW YORK BRANCH ROLLS-ROYCE BUILDING 32-34 EAST 57TH STREET… | ||
| img076 | Invoice from United Aircraft Products for two oil temperature regulators sold to Rolls-Royce of America. | ||
| View original record | UNITED AIRCRAFT PRODUCTS, Inc. Aeronautical Engineers - Airplane Accessories No. 5735 DAYTON, OHIO, 3/18/34. Purchaser's Order - Mr. W. A. Robotham Factory Order - #168 Date Received - 3/14/34 Terms -… | ||
| img077 | Letter to J.S. Inskip regarding an invoice from Cadillac for a '16' and a LaSalle frame. | ||
| View original record | Exptl. Dept. HS/Rm.15/KW. 13th April, 1934 J.S. Inskip, Esq., Rolls-Royce of America, Inc., 34 East 57th Street, New York, U.S.A. Dear Inskip, Thank you very much for your letter of April 3rd. I note… | ||
| img078 | Letter from Graham-Paige Motors Corporation to Mr. W. A. Robotham regarding a car purchase and shipment. | ||
| View original record | GRAHAM-PAIGE MOTORS CORPORATION DETROIT, MICHIGAN March 28, 1934 Rolls-Royce, London, England. Attention: Mr. W. A. Robotham Dear Sir: Replying to your letter of March 20th I shall be very glad to… | ||
| img079 | Letter to Delco-Remy Corporation seeking clarification on direction indicators and dynamo specifications. | ||
| View original record | Exptl. Dept. Hs/Rn.11/KW. 13th April, 1934. Mr. Dawson, Chief Engineer, Delco-Remy Corporation, Muncie, Indiana, U.S.A. Dear Mr. Dawson, I hope that the Direction Indicators arrived safely, as I… | ||
| img080 | Technical report by Graham Paige on the performance of supercharging by a centrifugal blower. | ||
| View original record | To Sg. From Ha/Rm, c. to Wor. c. to A. c. to Ry. c. to De. c. to Hdy. c. to EV. SUPERCHARGING BY CENTRIFUGAL BLOWER. GRAHAM PAIGE. Contrary to expectations, this method of car supercharging appears to… | ||
| img081 | Supercharger noise, fuel requirements, engine cooling, and oil temperatures. | ||
| View original record | -2- Other points discussed were :- SILENCE. WHAT HAS THE GREATEST DIFFICULTY ENCOUNTERED ? The supercharger runs at 5.75 engine speed and is driven off the 1.5 engine speed shaft by a single reduction… | ||
| img082 | Engine components including big end bearings, carburettors, blowers, superchargers, and engine speed limitations. | ||
| View original record | -3- BIG END BEARINGS. Interesting in that the sideways location is on the steel rod instead of white metal. This gives a greater effective big end length, stronger rod and a much cheaper construction.… | ||
| img083 | Blower efficiency and a summary of a supercharged Graham Paige car. | ||
| View original record | BLOWER EFFICIENCY. Graham Paige have designed and built this blower themselves with a little assistance from one of Duesenbergs men. They know as an approximate figure that the blower efficiency is… | ||
| img084 | Graph plotting intake manifold pressure and vacuum against engine RPM for supercharged and non-supercharged engines. | ||
| View original record | INTAKE MANIFOLD PRESSURE 3 1/4 x 4 SUPERCHARGED ENGINE RATIO SUPERCHARGER TO CRANKSHAFT 5.76 : 1 ATMOSPHERE LINE PRESSURE VACUUM INTAKE MANIFOLD VACUUM 3 1/4 x 4 ENGINE NOT SUPERCHARGED CARBURETTER… | ||
| img085 | Performance curve chart comparing a supercharged and a non-supercharged Graham engine. | ||
| View original record | FIRM: GRAHAM MODEL 67 & 69 SERIAL Nº TEST Nº 326-4-5A DATE Nº CYL. 8 BORE 3 1/4 STROKE 4 DISPLACEMENT 265.4 COMPRESSION RATIO FUEL GASOLINE FOR DETAILS SEE SPECIFICATION SHEET PAGES 6 & 14 AND LOG… | ||
| img086 | Visit to the U.S.A. automobile industry, discussing independent front wheel suspension systems. | ||
| View original record | To Sg. from Hs/Rn. c. to Wox. c. to E. c. to By. c. to Da. c. to Hdy. c. to EV. VISIT TO U.S.A. JAN. - MARCH, 1934. THE AUTOMOBILE INDUSTRY. RIDING COMFORT. Independent front wheel suspension as… | ||
| img087 | Analysis of Chrysler's Air-Flow design challenges and contemporary coachwork trends. | ||
| View original record | -2- The Chrysler Air-Flow Cars have attempted to achieve the same results as G.M. by altered weight distribution. They have retained the conventional front axle. There is no doubt that the altered… | ||
| img088 | Analysis of American car design and power unit technology, focusing on body rigidity and engine silence. | ||
| View original record | -3- Hs/Rn.S/KW.4.4.34. This may be discarded on all except custom built jobs where it may survive for the time being as such body rigidity does not equal all steel construction. The G.M. practice of… | ||
| img089 | Supercharger development, bearings, and engine design improvements. | ||
| View original record | -4- Hm/Rm.5/KW.4.4.34. Lastly, some of the accoustic work on dash insulation has helped them to keep noise out of the driving compartment. Therefore we know where our deficiencies lie. We were… | ||
| img090 | Competitor automotive engineering developments, including crankshafts, pistons, and valve gear. | ||
| View original record | -5- General Motors lab. are at present conducting tests on improving volumetric efficiency which is in parallel with our own project. They have also carried out a research on the deflection in valve… | ||
| img091 | Comparison of American engine design practices with existing company methods. | ||
| View original record | -6- The practice of passing oil directly from the connecting rod big end to the cylinder walls either by a hole through the rod or grooves in the rod bearing has become almost universal. The object is… | ||
| img092 | Engine cooling components, including the sourcing of a more efficient matrix, development of variable fans, and the necessity of an oil cooler. | ||
| View original record | -7- HB/Rm/5/KW.4.4.34. COOLING. There is a matrix available about 15% more efficient than the one Marstons are just beginning to produce for us. The difficulty is to get it made in England in the… | ||
| img093 | Technical report discussing developments in steering and transmission systems. | ||
| View original record | -8- STEERING. This has been assisted by independent wheel suspension and the full Marles with a two toothed follower is now in general use. The ratios are much lower than we could tolerate in England,… | ||
| img094 | Hypoid rear axles and a comparative analysis of competitor brake systems, concluding with a recommendation to revise the current brake linkage. | ||
| View original record | -9- The Hypoid rear axle does not seem to have gained ground. The only firm of any consequence using it are Pacards and they have not been entirely free from trouble. They have experienced… | ||
| img095 | Comparison of dynamo, starter motor, and car weight technologies, contrasting British practices with those of American manufacturers like Cadillac and Pontiac. | ||
| View original record | -10- DYNAMOS. It will be recollected that on the Bentley we reduced the speed and increased the size of the generator because we were afraid of running this machine at 7500 R.P.M. Had we known of… | ||
| img096 | Comparison of car weights and performance between a company model and American competitors. | ||
| View original record | -11- This car is full sized and has a straight eight engine almost exactly the same size as our 20/25. Also bumpers are fitted. These weights are not achieved by accident; most manufacturers have a… | ||
| img097 | Future development trends in the automotive industry, covering engines, chassis, and body design. | ||
| View original record | -12- TREND OF FUTURE DEVELOPMENT. Cadillacs have been running cars with independent rear wheel springing for some time but it seems doubtful if they will alter the whole rear end design of the car to… | ||
| img098 | Engine, transmission, and suspension developments, referencing competitor technologies from Cadillac and Graham. | ||
| View original record | -13- There is a feeling in many quarters that the side valve engine has reached the limit of its development with regard to compression ratio and volumetric efficiency, and that either two overhead… | ||
| img099 | Outlining considerations and recommendations for future automobile development work. | ||
| View original record | -2- It is the considered opinion of the C.M. engineers who have done the work on independent suspension that the Dubonnet scheme is inferior, though they admit that they favoured it to begin with. We… | ||
| img100 | Analysis of American automotive technology and practices for potential improvements. | ||
| View original record | -15- That an analysis to explain the valve spring trouble on the Bentley in the U.S.A. should be conducted. We recommend that our starter motors and dynamos should be brought into line with current… | ||
| img101 | List of American component manufacturers, their products, and their representation status in England. | ||
| View original record | -16- Hm/Rm.5/KR.4.4.34. In the first place they have behind them the engineering departments of the specialists' part producing plants. In a previous report we went into some detail describing the… | ||
| img102 | Using specialist-made parts versus in-house production, comparing approaches to American manufacturers and durability standards. | ||
| View original record | -17- HR/REL.8/KH.4.4.34. We appreciate we have not such a plethora of specialist at our disposal here, but on the other hand, a number of them are represented in England, and there are other English… | ||
| img103 | American automotive testing, design, and engine practices, suggesting the evaluation of a La Salle car. | ||
| View original record | -18- Hs/Rn.S/KR.4.4.34. In spite of the fact that the American manufacturer has zero weather at his elbow for testing for four months in the year, he makes extensive use of the cold room during the… | ||
| img104 | Bentley car road test in the USA, detailing road conditions and suspension performance. | ||
| View original record | x usa To Sg. From Hs/Rm. c. to WOT. c. to R. c. to Ey. c. to DA. c. to Hsy. c. to EV. Hs/Rm.S/KW.4.4.34. BENTLEY CAR IN U.S.A. This Car was driven Westward to a point 100 miles beyond Chicago, and… | ||
| img105 | Vehicle performance issues including frame jellying, cold weather lubrication, and ground clearance in snow. | ||
| View original record | -2- Hs/Rn.3/KW.4.4.34. At high speeds the car was comfortable and held the road well, even when the front shock absorber load had been considerably reduced. (2) FRAME JELLYING. This was noticeable… | ||
| img106 | Vehicle performance issues in cold weather, including brakes, gears, and valve springs. | ||
| View original record | -3- (5) FROZEN BRAKES. Powder snow can penetrate the brake shafts in the front axle and, after being thawed in a garage, will freeze solid and cause the brakes to stick on. It is difficult to know how… | ||
| img107 | Necessary equipment and carburation adjustments for cars intended for the American market. | ||
| View original record | -6- (10) GENERAL EQUIPMENT. For a car to run in America, bumpers and an interior heater are a necessity. (11) CARBURETION. On the whole, once the car had been started it ran as well under zero… | ||
| img108 | Confirming arrangements for shipping a Hudson Motors car and a Graham-Paige from Detroit to England. | ||
| View original record | usa W/S - C. (Dictated 6.4.34.) Hs/Rm.5/KW.7.4.34. Further to our telephone conversation this afternoon. This confirms that before I left Detroit I arranged that Mr. Spring of the Experimental Dept.… | ||
| img109 | Thank you letter to J. Inskip of Rolls-Royce America following a trip to New York. | ||
| View original record | u s a Exptl: Dept. Hs/Rm.10/KW. 7th April, 1934. J. Inskip, Esq., Rolls-Royce of America (Inc.), 34, East 57th Street, NEW YORK, U.S.A. Dear Inskip, We are now safely home. We had a most enjoyable… | ||
| img110 | Letter from Cadillac Motor Car Company providing a list of parts for a hydraulic lash adjuster. | ||
| View original record | CADILLAC MOTOR CAR COMPANY DETROIT, MICHIGAN OFFICE OF THE CHIEF ENGINEER March 19, 1934. Mr. W. A. Robotham, c/o Rolls-Royce, Limited, Derby, England. Dear Mr. Robotham: I am sorry not to have seen… | ||
| img111 | Continued list of part numbers and their corresponding names, addressed to Mr. W. A. Robotham. | ||
| View original record | -2- Mr. W. A. Robotham - Continued: Number Part Name 885207 Assembly - Hydraulic Lash Adjuster 882927 Plunger - Hydraulic Lash Adjuster 888853 - RH Assembly Valve Lifter Bushing and 888854 - LH Button… | ||
| img112 | Concluding page of a letter to Mr. W. A. Robotham listing various part numbers and names. | ||
| View original record | -5- Mr. W. A. Robotham - Continued: Number Part Name 881235 RH Eccentric - Hydraulic Lash Adjuster 881236 LH RH and LH 881144 Screw Adjusting Rocker Arm 881252 Washer - Rocker Arm Thrust With best… | ||
| img113 | Letter to E. W. Seaholm of Cadillac Motor Car Company congratulating them on their independent wheel springing development. | ||
| View original record | Exptl. Dept. Hs/Rm.9/KW. 7th April, 1934. E. W. Seaholm, Esq., The Cadillac Motor Car Company, Detroit, Michigan, U.S.A. Dear Mr. Seaholm, I was very sorry to miss you when I left Detroit. Thank you… | ||
| img114 | Letter concerning the shipment of a Graham Paige car aboard the American Farmer ship from Detroit to London. | ||
| View original record | ROLLS-ROYCE BREWSTER COACHWORK ROLLS-ROYCE WORKS SPRINGFIELD, MASSACHUSETTS LONDON AND DERBY, ENGLAND BREWSTER & CO. LONG ISLAND CITY, N.Y. NEW YORK BRANCH ROLLS-ROYCE BUILDING 32-34 EAST 57TH STREET… | ||
| img115 | Letter concerning a Graham Paige and inquiring about the shipping date for a Cadillac. | ||
| View original record | M 59 Exptl. Dept. Hn/Rn.8/KW. 7th April, 1934. L.A. King, Esq., Rolls-Royce, Brewster Coachwork, Rolls-Royce Building, 32-34, East 57th Street, New York, U.S.A. Dear Mr. King, Many thanks for your… | ||
| img116 | The policy for running and selling Bentley cars in the United States market. | ||
| View original record | U S A W/B . IB. Ha/Rm.S/KW.7.4.34; Re. Running of Bentley: ******************* Referring to TP.A/D.28.3.34. I attach a copy of my remarks on the running of the Bentley in the United States. If it is… | ||
| img117 | Requesting a list of suggested modifications for the Bentley Car for export to the U.S.A. | ||
| View original record | S/W.....Rm. Tr5/D28.3.34 Re: Running of Bentley With reference to your various memos. from the U.S.A. re the running of the Bentley Car, I shall be much obliged if you will let me have at your leisure… | ||
| img118 | Letter enclosing remarks on the running of a Bentley in the United States. | ||
| View original record | u s a S/W.....Rm. Tr31/D9.4.34 I am much obliged for Hs/B7/KW.7.4.34, enclosing a copy of your remarks on the running of the Bentley in the United States. Tr. | ||
| img119 | Letter to the Aluminium Co. of America requesting the procurement of Perfect Circle piston rings for testing. | ||
| View original record | Exptl. Dept. HS/RM.3/KW. 9th April, 1934. H.C. Barnes, Esq., The Aluminium Co. of America, 3311, Dunn Road, Detroit, Michigan, U.S.A. Dear Mr. Barnes, Referring to your letter of March 16th, I should… | ||
| img120 | Request for particulars of flying during a visit to America for insurance purposes. | ||
| View original record | Rm. Rm D/L2Q/B11-4-34. Please let us have, as early as possible, particulars of the flying done on your recent visit to America, as the Insurers are anxious to dispose of the matter. D.P. | ||
| img121 | Cover note attaching a copy of a letter sent to 'Oy' and advising a similar letter was sent to Mr. Inskip. | ||
| View original record | 1. to Wgr.) from Sg. 2. to Rm. ) Sg11/E12.4.34 I attach for your information copy of letter sent to Oy. A letter on similar lines has also been sent to Mr.Inskip. Sg. Enc. Copy of Sg9/E12/4.34 Wor… | ||
| img122 | Thank-you letter to Mr. Maurice Olley for his assistance and the valuable information provided during a trip to America. | ||
| View original record | Sg9/El2.4.34 12th April 1934 Dear Oy., I spent some little time yesterday with Rm., discussing the main results of his American trip. He emphasised the valuable information and the large amount of… | ||
| img123 | Results and suggestions from a visit to the U.S.A., proposing actions for design discussion. | ||
| View original record | To Hg. and Wer. from S. c. Hs. Hy. Dr. Hey. EV. E.2/HP.16.4.34. Visit of Rm. to U.S.A. Referring to the results of Rm's visit to the States, I think the tremendous amount of information he has… | ||
| img124 | Riding comfort and the issue of rolling in cars with independent front wheel suspension. | ||
| View original record | To Sg. and WGT. from E. c. Hs. Ty. Ba. Hdy. SV. Riding Comfort. We have now tried three different cars fitted with independent front wheel suspension and low rating springing, e.g. the Pontiac, the… | ||
| img125 | Suspension design, comparing American and English road conditions, and analyzing anti-rolling features of different chassis. | ||
| View original record | - 2 - K.1/HP.16.4.34. ----------------- we former as/well know being highly cambered, narrow and very winding, while the latter are non cambered, broad and straight. American road surfaces have always… | ||
| img126 | Comparison of Dubonnet and Cadillac wishbone suspension systems for the Spectre model. | ||
| View original record | - 3 - S.1/HP.16.4.34. The RR. scheme can have linkage of similar proportions to the Cadillac to raise the rolling base but the Dubonnet is definitely unalterable. So far however as we can see any… | ||
| img127 | Proposal discussing weight distribution, suspension, and wheelbase for the 'Spectre' model, comparing it to competitors. | ||
| View original record | - 4 - K.1/HP.16.4.34. istic of carrying the load from the upper linkage by an enclosed helical spring combined with the damper. Our proposal is in this way to build in the results of General Motors… | ||
| img128 | Weight analysis from Pontiac, comparing figures and noting differences in how bumper weights are accounted for. | ||
| View original record | To E. from Hs/Rn. c.c. to Hx. c.c. to Hy. c.c. to Da. c.c. to Edy. c.c. to EV. Here is the weight analysis carried out by Pontiac as part of their general routine. Some of the figures are interesting… | ||
| img129 | Weight specification sheet for the chassis and running gear of a 1934 Pontiac 4-Door. | ||
| View original record | 4 Door 1934 1934 WEIGHT 1934 Pontiac CHASSIS - RUNNING GEAR. Complete Power Plant .................... 775.3 Hand Brake Lever & Brake & Clutch Pedals... 11.8 Front Axle, Hubs, Drums,Bearings &… | ||
| img130 | Weight breakdown of chassis components including sheet metal and lamps for a 1934 Pontiac. | ||
| View original record | 1934 Weight 1934 Pontiac BALANCE OF CHASSIS INCLUDING SHEET METAL AND LAMPS. Rear Tire Carrier (Wire Wheels) ........... 5.6 Radiator Splash Apron .................... Front Fenders and Fender Irons… | ||
| img131 | Detailed weight study breakdown for a 1934 Pontiac vehicle. | ||
| View original record | 1934 Weight Study 1934 Pontiac Body inc. Toe & Floor Boards, Mats, and Carpets (2-Door for Chev. Std., 4-Door for others) 847.4 Instrument Body Fittings 22.2 TOTAL BODY 869.6 WEIGHT DRY WITH ALL PARTS… | ||
| img132 | Weight analysis of a 4-door 1934 Pontiac chassis and running gear. | ||
| View original record | WEIGHT ANALYSIS OF 4-DOOR 1934 PONTIAC CHASSIS - RUNNING GEAR. lbs. Complete power plant 775.3 ✓ Hand Brake Lever & Brake & Clutch Pedals 11.9 ✓ Front Axle, Hubs, Drums, Bearings & Brakes 234.5 ✓ Rear… | ||
| img133 | List of parts and their weights for the balance of a chassis, including sheet metal and lamps. | ||
| View original record | -2- BALANCE OF CHASSIS INCLUDING SHEET METAL AND LAMPS. lbs. Rear Tire Carrier (Wire Wheels) 5.6 Radiator Splash Apron Front Fenders and Fender Irons 84.7 Rear Fenders 25.6 Running Boards & Side… | ||
| img134 | Weight breakdown sheet for a vehicle's body and equipment, detailing individual component weights in pounds. | ||
| View original record | -3- Body inc. Toe & Floor Boards, Mats, and Carpets (2-door for Chev. Std., 4-door for others) lbs. 847.4 Instrument body fittings 22.2 TOTAL BODY................... 869.6 WEIGHT DRY WITH ALL PARTS… | ||
| img135 | Letter to the Detroit Athletic Club concerning a disputed account balance and requesting further information. | ||
| View original record | Exptl. Dept. Ha/Rm.16/KW. 17th April, 1934. The Accountant, Detroit Athletic Club, Detroit, Michigan, U.S.A. Dear Sir, When I left Detroit on March 18th the only account left outstanding was for the 7… | ||
| img136 | Letter to J.S. Inskip regarding the payment of accounts and clarification on an order from Amplex Manufacturing Co. | ||
| View original record | Exptl. Dept. Hs/Rm.15/KW. 17th April, 1934. J.S. Inskip, Esq., Rolls-Royce of America, Inc., 34, East 57th Street, New York, U.S.A. Dear Inskip, Here is my last New York Athletic Club account. I… | ||
| img137 | Letter from Illsley Company following up on tests of their closed radiation units, discussing valve sizes and enclosing testimonials. | ||
| View original record | MADISON 2366 ILLSLEY COMPANY PRECISION AUTOMOTIVE EQUIPMENT COOLANT CONTROL VALVES 38 PIQUETTE AVENUE DETROIT, MICHIGAN March 24th, 1934 Mr. W. A. Robotham % Rolls Royce Ltd. 32 East 57th Street New… | ||
| img138 | Postscript discussing a visit to Prestone offices, a valve production license, and arrangements with the Cuno Corporation for the British market. | ||
| View original record | P. S.- After the foregoing was dictated, I was called to New York, and while there, had a visit at the Prestone offices and learned that they had failed to send you the copy of their booklet as per my… | ||
| img139 | Letter to The Illsley Company in Detroit regarding the satisfactory testing of their closed radiation units and the requirement for them to be manufactured in England. | ||
| View original record | Exptl. Dept. HA/Rm;18/KW. 17th April, 1934. F. P. Illsley, Esq., The Illsley Company, 38, Piquette Avenue, Detroit, Michigan, U.S.A. Dear Mr. Illsley, Thank you for your letter of March 24th. We have… | ||
| img140 | Letter to Curtiss Wright Co. discussing engine cooling, B.T.U.s, exhaust valve tests and glycol. | ||
| View original record | Exptl. Dept. Hs/Rn. 9/KW. 18th April, 1934. Arthur Nutt, Esq., Chief Engineer, Curtiss Wright Co, Paterson, New Jersey, U.S.A. Dear Nutt, Sorry to worry you but we are interested to know the B.T.U's.… | ||
| img141 | Letter from Harrison Radiator Corporation to Mr. W. A. Robotham regarding a recent visit and potential radiator developments. | ||
| View original record | HARRISON RADIATOR CORPORATION LOCKPORT, NEW YORK April 9, 1934 Mr. W. A. Robotham, Engineering Dept. Rolls Royce Derby, Derbyshire England Dear Mr. Robotham: Presume by this time you are again in the… | ||
| img142 | Letter from Rolls-Royce of America concerning the accounting of a $300 fund and the status of various parts orders. | ||
| View original record | ✓ cc Mr. Robotham April 10, 1934 Rolls-Royce, Ltd. Derby England Attention Mr. J. de Loos Gentlemen: We have your letter of March 27th regarding the sum of three hundred dollars ($300.00) sent us for… | ||
| img143 | Invoice from the Aluminum Company of America for 16 permanent mold 'A' pistons. | ||
| View original record | ALUMINUM COMPANY OF AMERICA Pittsburgh, Pa. Customer's Order: VERBAL Invoice Date: APRIL 4, 1934 Our No.: DETROIT 1650 ROLLS ROYCE OF AMERICA, INC., ATT: MR. J. S. INSKIP, 34 E. 57th ST., NEW YORK… | ||
| img144 | Letter from Delco-Remy Corporation regarding a sample direction indicator and its potential installation. | ||
| View original record | DELCO-REMY CORPORATION ANDERSON, INDIANA April 12th, 1934. PLEASE ADDRESS REPLY TO THE ATTENTION OF Eng.Dept. Mr.W.A. Robotham, Rolls Royce Ltd., Derby, England. Dear Mr.Robotham: Thank you for the… | ||
| img145 | Comparing Cadillac and Bentley engine valve timings, noting Cadillac's negative overlap and proposing an alternative camshaft for the Spectre. | ||
| View original record | To E. from Hs/Rm. c. to Lor. c. to By. x USA Hs/Rm.4/GW.13.4.34. POWER OUTPUTS. ROLLS-ROYCE AND CADILLAC PRODUCTS. Here are the Cadillac M.E.P's. compared with our own on a common base, also the valve… | ||
| img146 | Graph of Brake Mean Effective Pressure curves comparing various engines including Cadillac and Bentley. | ||
| View original record | G.M.C. CORRECTION TO 103°F BRAKE MEAN EFFECTIVE PRESSURE CURVES CADILLAC AND ROLLS ROYCE PRODUCTS IR-10 LB. FT. SIXTEEN DUPLEX CARBS DOWNDRAUGHT 6.49 C/R BENTLEY SIXTEEN SINGLE UPDRAUGHT 6.49 C/R… | ||
| img147 | Comparative chart of engine valve timings and B.M.E.P. curves for various Cadillac, La Salle, and Bentley models. | ||
| View original record | SHEET OR PAGE NO. REPORT NO. ENGINE MOD. & SERIAL NO. TEST DATE POWER & ECONOMY OBT. CORR. B.M.E.P. CURVES CADILLAC 452 CU IN. V-16 DUPLEX DOWNDRAFT CARBURETTERS - 5.49 C.R. CADILLAC 452 CU IN. V-16… | ||
| img148 | Night letter cable to Cadillac regarding criticism of their vehicle's handling and rolling on corners. | ||
| View original record | M 38 19.4.34. NIGHT LETTER CABLE. OLLEY, CADILLAC MOTOR CAR CO., DETROIT, MICHIGAN, U.S.A. CADILLAC WILL BE CRITICISED FOR ROLLING ON CORNERS. PLEASE ENSURE MAXIMUM LATERAL STABILITY EVEN AT THE… | ||
| img149 | The purchasing of automobile parts in the U.S.A and settling accounts with Mr. Inskip of New York. | ||
| View original record | To D. from HS/Rm. Hs/Rm.17/KW.13.4.34 Purchasing of Automobile Parts in the U.S.A. I left a list of parts with Mr. Inskip of New York, asking him to settle the accounts as these were shipped. I… | ||
| img150 | Telegram received by telephone regarding the expected arrival of the ship 'American Farmer'. | ||
| View original record | W59 3 ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received: 11.45 Date: 19/4/34 To: Roycar By: C C from: W H London American Farmer expected King George Dock London Monday Morning RW Rec'd… | ||
| img151 | Letter from United States Lines confirming the expected docking time of the ship 'American Farmer'. | ||
| View original record | UNITED STATES LINES AMERICAN MERCHANT LINES UNITED STATES LINES OPERATIONS, INC. (INCORPORATED WITH LIMITED LIABILITY IN U.S.A.) UNITED KINGDOM FREIGHT AND OPERATING DEPARTMENTS AND CITY PASSENGER… | ||
| img152 | Short memo requesting information concerning an 'American Visit'. | ||
| View original record | 4 sd. Rm. D/L9/B14-4-34. AMERICAN VISIT. Please supply the information asked for in D/L2Q/B-11-4-34 as early as possible, and oblige. L. | ||
| img153 | Night letter cable to Detroit requesting shipping information and chassis number for a car. | ||
| View original record | U S A 20.4.34: NIGHT LETTER CABLE. KISHLINE, GRAHAM PAIGE, DETROIT, U.S.A. UNDERSTAND OUR CAR MISSED AMERICAN FARMER. PLEASE ADVISE WHEN SHIPPED AND CHASSIS NUMBER. ROBOTHAM, ROLLS-ROYCE. | ||
| img154 | Acquiring American car exhaust systems and Aerolite pistons for testing and experience. | ||
| View original record | W/S - Bn. c. to Sg. Hs/Rm.9/KW.21.4.34. We want to get two or three American representative six-cylinder car exhaust systems. The Chevrolet, Plymouth and small Graham-Paige six are all about the 20/25… | ||
| img155 | Cadillac 16 gearbox, Lincoln gearbox, and Lincoln clutch, mentioning a picture and the imminent arrival of the Cadillac car for scaling. | ||
| View original record | usa (3) To Hdy. From Hs/Rm. Hs/Rm.10/MJ.24.4.34. Here is a picture of the Cadillac 16 gearbox and the Lincoln gearbox. The Cadillac car will be here in a very short time so that you will be able to… | ||
| img156 | From 'Wor' regarding an attached letter from Thos. F. Hamilton of Pratt & Whitney Aircraft Co. | ||
| View original record | Rm. from Wor. Wor7/R.30.4.34. Please see attached letter from Thos. F. Hamilton, European Representative, Pratt & Whitney Aircraft Co., dated 23rd April. I know nothing of this matter. Wor. | ||
| img157 | Unofficial enquiries into a licence for Pratt & Whitney to manufacture engines in England. | ||
| View original record | To Wor; from Hs/Rm. 115A Hs/Rm.16/KW.30.4.34. With reference to the attached, Hs. asked me on the 'phone whether Pratt & Whitneys had issued a licence for the manufacture of their engines in England.… | ||
| img158 | Letter from Illsley Company regarding their closed radiation units and potential business opportunities. | ||
| View original record | MADISON 2366 u s a ILLSLEY COMPANY PRECISION AUTOMOTIVE EQUIPMENT COOLANT CONTROL VALVES 38 PIQUETTE AVENUE DETROIT, MICHIGAN April 22nd 1934, Mr. W. A. Robotham, Rolls Royce Ltd, Derby, England Dear… | ||
| img159 | List of American automobile and aviation engineers to be thanked for their goodwill during a visit to America. | ||
| View original record | To Sg. from Hs/Rm. Hs/Rm.20/KW. 3.5.34. The following Automobile Engineers were particularly helpful to me during my visit to America, and it might be in the interests of the Company to thank them… | ||
| img160 | List of individuals and their affiliated companies, concluding with a note of thanks for assistance received. | ||
| View original record | -2- (13) Mr. L.P. Saunders, Chief Engineer, Harrison Radiator Corporation, Lockport, New York (14) Mr. Sorensen, Chief Engineer of the Ford Motor Co., Dearborn, Detroit, Michigan. (15) Messrs.… | ||
| img161 | License from Pratt & Whitney for engine manufacture in England. | ||
| View original record | To Sg. from Hs/Rm; Hs/Rm.13/KW.3.5.34; With reference to the attached, when in America Hs. asked me on the 'phone whether Pratt and Whitneys had issued a licence for the manufacture of their engines… | ||
| img162 | Letter to J.S. Inskip of Rolls-Royce America regarding an upcoming invoice for piston rings. | ||
| View original record | u sa Exptl. Dept. HS/RM.4/KW 7th May, 1934. J.S. Inskip, Esq., Rolls-Royce of America (Inc.) 34, East 57th Street, New York, U.S.A. Dear Inskip, Thank you for your letter of April 16th. I saw Rose and… | ||
| img163 | Letter to Mr. Barnes of The Aluminium Co. of America acknowledging his letter and awaiting the arrival of pistons. | ||
| View original record | A 561 Exptl. Dept. Ha/Ra.14/RW. 5th May, 1934. M.C. Barnes, Esq., The Aluminium Co. of America, 3311, Dunn Road, Detroit, Michigan, U.S.A. Dear Mr. Barnes, Thank you for your letter of April 24th. We… | ||
| img164 | Letter to the Michigan Tool Co. inquiring about a cone worm for a supercharger drive. | ||
| View original record | Copy to Mr. Kishline, Graham-Paige Motors Corp. Detroit. < USA Exptl. Dept. England. HS/RH. & /KW. 5th May, 1934. The Michigan Tool Co. of Detroit, Michigan, U.S.A. Dear Sirs, We have heard from Mr.… | ||
| img165 | Requesting the drafting of suitable letters and providing company paper for them. | ||
| View original record | To Rm. from Sg. Sg1/E4.5.34 Referring to Hs/Rm.20/KW.3.5.34 it is a little difficult for me to write a suitable letter in each case because I do not know whether in some of them it was the man… | ||
| img166 | Covering memo confirming that suggested letters have been written and are enclosed. | ||
| View original record | To Sg. from Hs/Rm: Hs/Rm:l/KW. 8.5.34; Referring to Sgl/E.4.5.34, we have written the letters as you suggested, and send them to you herewith. Hs/Rm. | ||
| img167 | Letter to E.W. Seholm of Cadillac thanking him for his hospitality towards Mr. Robotham during his visit to America. | ||
| View original record | Sg.25/KW. 7th May, 1934. E.W. Seholm, Esq., The Cadillac Motor Car Co., Detroit, Michigan, U.S.A. Dear Mr. Seholm, On his return to England Mr. Robotham told me how much he was indebted to you and to… | ||
| img168 | Letter to Commander Briggs of General Motors Proving Ground, thanking him for his help and wishing him a speedy recovery. | ||
| View original record | Sg. 26/KW. 7th May, 1934. Commander Briggs, General Motors Proving Ground, Milford, Michigan, U.S.A. Dear Commander Briggs, Rm. tells me that when he was in America you helped him considerably. I… | ||
| img169 | Letter of thanks to the Chief Engineer of The Hudson-Essex Co. for a factory visit. | ||
| View original record | Sg.27/KW. 7th May, 1934. S.G. Bates, Chief Engineer, The Hudson-Essex Co., Detroit, Michigan, U.S.A. Dear Mr. Bates, Mr. Robotham tells me that he had a very interesting time at the Hudson-Essex… | ||
| img170 | Letter of thanks to General Pratt for the courtesy extended to Mr. Robotham during his visit to Wright Field. | ||
| View original record | Eg. 28/KW. 7th May, 1934. General Pratt, Officer Commanding, Wright Field, Dayton, Ohio, U.S.A. Dear General Pratt, Mr. Robotham tells me that he very much appreciated the facilities you gave him for… | ||
| img171 | Letter of thanks to Captain Powers for the courtesy extended to Mr. Robotham at Wright Field. | ||
| View original record | Sg.29/KW. 7th May, 1934. Captain Powers, Power Plant Section, Wright Field, Dayton, Ohio, U.S.A. Dear Captain Powers, I hear from Mr. Robotham that he had a most interesting time in the Power Plant… | ||
| img172 | Letter of thanks to Mr. L.P. Saunders of The Harrison Radiator Corporation for the assistance provided to Mr. Robotham during his visit to America. | ||
| View original record | Sg.30/KW. 7th May, 1934. L.P. Saunders, Esq., Chief Engineer, The Harrison Radiator Corporation, Lockport, New York, U.S.A. Dear Mr. Saunders, On his return from America Mr. Robotham spoke… | ||
| img173 | Letter to the Ethyl Gas Corporation regarding their work on overcoming the attack on exhaust valves by Ethyl. | ||
| View original record | Sg.31/KW. 7th May, 1934. Mr. Heron, The Ethyl Gas Corporation, Detroit, Michigan, U.S.A. Dear Mr. Heron, We were interested to hear from Mr. Robotham of the work you are doing to overcome one of our… | ||
| img174 | Thank you letter to Robert Jardine of The Wilcox-Rich Valve Corporation for assistance provided in Detroit. | ||
| View original record | Sg.32/KW. 7th May, 1934. Robert Jardine, Esq., The Wilcox-Rich Valve Corporation, Detroit, Michigan, U.S.A. Dear Mr. Jardine, Mr. Robotham tells me that you were of very material assistance to him on… | ||
| img175 | Thank-you letter to Dr. Lewis at Langley Field Research Station following a visit from Mr. Robotham. | ||
| View original record | Sg.33/KW. 7th May, 1934. Dr. Lewis Langley Field Research Station, Norfolk, Virginia, U.S.A. Dear Dr. Lewis, On returning from his recent trip to America, Mr. Robotham spoke enthusiastically of the… | ||
| img176 | Letter of thanks to Mr. Bower, Chief Engineer at The Buick Co., for the courtesy extended to Mr. Robotham during his visit. | ||
| View original record | Sg.34/KW. 7th May, 1934. Mr. Bower, Chief Engineer, The Buick Co., Flint, Michigan, U.S.A. Dear Mr. Bower, Mr. Robotham tells me that he had a very interesting time at the Buick Factory while he was… | ||
| img177 | Thank you letter to the Chief Engineer of the Graham-Paige Co. for courtesy extended during a factory visit. | ||
| View original record | SG.35/KW. 7th May, 1934. Mr. Kishline, Chief Engineer, The Graham-Paige Co., Detroit, Michigan, U.S.A. Dear Mr. Kishline, Mr. Robotham tells me that he had a very interesting time at the Graham-Paige… | ||
| img178 | Thank you letter to the Chief Engineer of Pontiac Motor Car Co. regarding a factory visit. | ||
| View original record | Sg.36/RW. 7th May, 1934. Mr. Anibal, Chief Engineer The Pontiac Motor Car Co., Flint, Michigan, U.S.A. Dear Mr. Anibal, Mr. Robotham tells me that he had a very interesting time at the Pontiac Factory… | ||
| img179 | Letter to the Managing Director of The Eclipse Aviation Corporation thanking them for a factory visit. | ||
| View original record | Sg.37/KW. 7th May, 1934. Mr. Marcus, Managing Director, The Eclipse Aviation Corporation, Lansing, New Jersey, U.S.A. Dear Mr. Marcus, Mr. Robotham tells me that he had a very interesting time at the… | ||
| img180 | Letter to Mr. Dawson of The Delco Electrical Corporation, thanking him for the courtesy extended to Mr. Robotham. | ||
| View original record | Sg.38/KW. 7th May, 1934. Mr. Dawson, Chief Engineer, The Delco Electrical Corporation, Muncie, Indiana, U.S.A. Dear Mr. Dawson, Mr. Robotham tells me that he had a very interesting time at the Delco… | ||
| img181 | Thank-you letter to Mr. Sorenson at Ford Motor Car Co. for a factory visit. | ||
| View original record | Sg.40/KW. 7th May, 1934. Mr. Sorenson, Chief Engineer, The Ford Motor Car Co., Dearborn, Detroit, Michigan, U.S.A. Dear Mr. Sorenson, Mr. Robotham tells me that he had a very interesting time at the… | ||
| img182 | Letter to the General Manager of Packard Co. thanking him for the courtesy extended during a factory visit. | ||
| View original record | Sg.41/KW. 7th May, 1934. MR. Brodie, General Manager, The Packard Co., Detroit, Michigan, U.S.A. Dear Mr. Brodie, Mr. Robotham tells me that he had a very interesting time at the Packard Factory while… | ||
| img183 | Letter to Mr. Hobbs of Pratt & Whitney thanking him for the courtesy extended during a factory visit. | ||
| View original record | Sg.42/KW. 7th May, 1934. Mr. Hobbs, Messrs. Pratt & Whitney, Hartford, Connecticut, U. S. A. Dear Mr. Hobbs, Mr. Robotham tells me that he had a very interesting time at the Pratt & Whitney Factory… | ||
| img184 | Letter of thanks to the President of the Curtiss-Wright Corporation for the courtesy extended to Mr. Robotham during a factory visit. | ||
| View original record | Sg.43/KW. 7th May, 1934. Guy Vaughan, Esq., President, The Curtiss-Wright Corporation, Paterson, New Jersey, U.S.A. Dear Mr. Vaughan, Mr. Robotham tells me that he had a very interesting time at the… | ||
| img185 | Letter to Ben Hopkins of The Cleveland Graphite Co. thanking him for a factory visit. | ||
| View original record | Sg.44/KW. 7th May, 1934. Ben Hopkins, Esq., The Cleveland Graphite Co., Cleveland, Ohio, U.S.A. Dear Mr. Hopkins, Mr. Robotham tells me that he had a very interesting time at the Cleveland Graphite… | ||
| img186 | Letter of appreciation to The Vacuum Oil Co. for assistance provided by Mr. Dickey during a visit to Detroit. | ||
| View original record | Hs/Rm.45/KW. 7th May, 1934. The Manager, The Vacuum Oil Co. 26, Broadway, New York, U.S.A. Dear Sir, When I was in Detroit on my recent visit to America, I received material assistance from your Mr.… | ||
| img187 | Request to General Motors for details on their setup for observing valve movement. | ||
| View original record | Exptl. Dept. Hs/Rm.18/KW. 7th May, 1934. Major Hallett, General Motors Research Laboratory, Detroit, Michigan, U.S.A. Dear Major Hallett, We are in full song with the silent tappets but still badly… | ||
| img188 | Letter from Graham-Paige Motors Corporation regarding cone worm gear design and crankshaft characteristics. | ||
| View original record | GRAHAM-PAIGE MOTORS CORPORATION DETROIT, MICHIGAN [Handwritten Note] Gry. Can you let me have Carters formula to pass on to Mr Thoms Rm April 24, 1934. Rolls-Royce, Ltd., Derby, England. Gentlemen:… | ||
| img189 | Blueprint with diagrams and formulas for calculating the equivalent length and stiffness of a half journal. | ||
| View original record | Diagram labels: w, r, g2, d2, a, h, b, g1, d1 HALF JOURNAL A B EQUIVALENT LENGTH FROM A TO B = L = (2b + .8h) + (3/4)a * (d1^4 - g1^4) / (d2^4 - g2^4) + (3/2)r * (d1^4 - g1^4) / (h*w^3) STIFFNESS A TO… | ||
| img190 | Letter to Graham-Paige Motors discussing crankshaft design and torsional vibration issues. | ||
| View original record | Exptl. Dept. HS/Rn.4/KW. 8th May, 1934. F.F. Kishline, Esq., Graham-Paige Motors Corporation, Detroit, Michigan, U.S.A. Dear Mr. Kishline, Thank you so much for your letter of April 24th. We send you… | ||
| img191 | Letter from the Detroit Athletic Club regarding a credit balance of $18.77 on an account. | ||
| View original record | Detroit Athletic Club Detroit April 30, 1934. Mr. W. A. Robotham, Rolls-Royce Ltd., Derby, England. Dear Sir: In reply to your letter of April 17th, will say that we received your remittances referred… | ||
| img192 | Letter to The Detroit Athletic Club requesting payment for an outstanding amount of 13.77 dollars. | ||
| View original record | Exptl. Dept. HS/RML/KW. 14th May, 1934. The Accountant, The Detroit Athletic Club, Detroit, Michigan, U.S.A. Dear Sir, Thank you for your letter of April 30th. I shall be glad if you will send me a… | ||
| img193 | Letter from the Office of the President concerning accommodation and arrangements for Major Bulman's trip to America. | ||
| View original record | usa ROLLS-ROYCE BREWSTER COACHWORK ROLLS-ROYCE WORKS SPRINGFIELD, MASSACHUSETTS LONDON AND DERBY, ENGLAND BREWSTER & CO. LONG ISLAND CITY, N.Y. April 16, 1934 NEW YORK BRANCH ROLLS-ROYCE BUILDING… | ||
| img194 | Letter from Maurice Olley at Cadillac to W. A. Robotham discussing a car's production, its springing, and an inquiry about a Bentley engine. | ||
| View original record | u s a 3 CADILLAC MOTOR CAR COMPANY DETROIT, MICHIGAN CADILLAC and LASALLE MOTOR CARS April 25, 1934. Mr. W. A. Robotham, c/o Rolls Royce, Limited, Derby, England. Dear EM: Replying to your various… | ||
| img195 | Letter from Frank P. Illsley regarding valve tests and potential business licensing opportunities. | ||
| View original record | Directed by Ralph Hitz Frank P. Illsley Telephone: Cadillac 8050 u s a BOOK CADILLAC HOTEL WASHINGTON BOULEVARD AT MICHIGAN AVENUE DETROIT May 4th 1934 Mr. W. A. Robotham, Rolls Royce Ltd, Derby… | ||
| img196 | Letter to the Cadillac Motor Car Company providing drawings and details of a Bentley engine. | ||
| View original record | Usel Exptl. Dept. Ha/Rm.5/KW. 16th May, 1934. M. Olley, Esq., The Cadillac Motor Car Coy., Detroit, Michigan, U.S.A. Dear Oy., Here are the nearest approach to Arrangement Drawings of the Bentley that… | ||
| img197 | Letter requesting details on a new small Buick and mentioning the receipt of a Graham-Paige and an awaited Cadillac. | ||
| View original record | -2- Hs/Rm.5/KW.16.5.34. In the meantime we should very much like details of the new small Buick, in particular Induction System and Hot Spot, Valve operation, Front End Drive, and Crankshaft and… | ||
| img198 | Letter from the President's office authorizing Mr. E. W. Hives to sign papers for taking a Cadillac limousine to England. | ||
| View original record | ROLLS-ROYCE BREWSTER COACHWORK ROLLS-ROYCE WORKS SPRINGFIELD, MASSACHUSETTS LONDON AND DERBY, ENGLAND BREWSTER & CO. LONG ISLAND CITY, N.Y. NEW YORK BRANCH ROLLS ROYCE BUILDING 32-34 EAST 57TH STREET… | ||
| img199 | Invoice from Aluminum Company of America for aluminum weld bars. | ||
| View original record | ALUMINUM COMPANY OF AMERICA PITTSBURGH, PA. CUSTOMER'S ORDER NO. & DATE: VERBAL REQUISITION NO.: CONTRACT NO.: SOLD TO: ROLLS ROYCE OF AMERICA, INC. ATT. MR. J.E. INSKIP 34 E. 38TH ST. NEW YORK CITY,… | ||
| img200 | Invoice from the Aluminum Company of America for 16 Permanent Mold 'AA' Pistons. | ||
| View original record | ALUMINUM COMPANY OF AMERICA PITTSBURGH, PA. MSQ 13 CUSTOMER'S ORDER NO. & DATE: VERBAL REQUISITION NO. CONTRACT NO. SOLD TO: ROLLS ROYCE OF AMERICA, INC., ATT: MR. J.S. INSKIP, 24 E. 57TH ST., NEW… | ||
| img201 | Original packing memo from The Perfect Circle Co. detailing a shipment. | ||
| View original record | FORM 01 - 3 AND 5 - 10 AND 10M 8-27-33 ORIGINAL PACKING MEMO THE PERFECT CIRCLE CO. HAGERSTOWN, INDIANA USA SHIPPING NOTICE Mfg. Ser. Box No. 9885 Date 5-10-34 Your Order For our Mr. J. E. Butz… | ||
| img202 | Letter from the American branch to the English branch concerning the settlement of various accounts. | ||
| View original record | USA 3 ROLLS-ROYCE OF AMERICA, INC. ROLLS-ROYCE WORKS SPRINGFIELD, MASSACHUSETTS LONDON AND DERBY, ENGLAND BREWSTER & CO. LONG ISLAND CITY, N.Y. May 14, 1934 NEW YORK BRANCH ROLLS-ROYCE BUILDING 32-34… | ||
| img203 | Letter from Chrysler Motors' Amplex Division concerning an invoice, shipment, and payment confirmation. | ||
| View original record | CHRYSLER MOTORS-AMPLEX DIVISION AMPLEX MANUFACTURING CO. 7900 Joseph Campau Avenue DETROIT CHRYSLER INDUSTRIAL ENGINES CHRYSLER MARINE ENGINES VIBRATION DAMPERS ENGINE MOUNTINGS OILITE BEARINGS May 2,… | ||
| img204 | Invoice from Amplex Manufacturing Company for Oilite Inserts. | ||
| View original record | 14215 PRINTED IN U.S.A AMPLEX MANUFACTURING COMPANY DIVISION OF CHRYSLER CORPORATION DETROIT, MICHIGAN INVOICE NUMBER DM-135414 IN WRITING ABOUT THIS INVOICE REFER TO THE ABOVE NUMBER SOLD TO Rolls… | ||
| img205 | Letter from the American branch to the UK branch detailing fund expenditures and requesting payment. | ||
| View original record | COPY u s a (3) ROLLS-ROYCE OF AMERICA INC. May 14th, 1934. Rolls-Royce Ltd., Derby, England. Gentlemen; Attention Mr. John DeLooze. On April 10th we wrote giving you an accounting of the $300.00 sent… | ||
| img206 | Letter from the Michigan Tool Company responding to an inquiry and arranging a visit from their London representative. | ||
| View original record | usa/31 MICHIGAN TOOL COMPANY 7171 SIX MILE ROAD, E. TEL. WHITTIER 9030 DETROIT, MICH. May 24, 1934. Reference Hs/Rm.8/KW. Rolls-Royce Ltd., Derby, England. Att: Mr. W. A. Robotham. Gentlemen: We are… | ||
| img207 | Letter from General Motors regarding information on an optical valve lift indicator. | ||
| View original record | GENERAL MOTORS CORPORATION DETROIT, MICHIGAN May 18, 1934 Mr. W. A. Robotham Rolls-Royce Ltd. Derby England Dear Mr. Robotham: Your letter of May 7 arrived coincident with the completion of some… | ||
| img208 | Letter to Major G.E.A. Hallett of General Motors discussing a report on valve gear movement and developments with Cadillac tappets. | ||
| View original record | - USA Exptl. Dept. Hs/Ra.18/KW. 31st May, 1934: Major G.E.A. Hallett, Research Laboratory General Motors Corporation, Detroit, Michigan, U.S.A. Dear Major Hallett, Thank you so much for the report on… | ||
| img209 | Letter from Rolls-Royce of America seeking approval to pay a late invoice of $2.51 from the New York Athletic Club on behalf of Mr. Robotham. | ||
| View original record | ROLLS-ROYCE BREWSTER COACHWORK ROLLS-ROYCE WORKS SPRINGFIELD, MASSACHUSETTS LONDON AND DERBY, ENGLAND BREWSTER & CO. LONG ISLAND CITY, N.Y. NEW YORK BRANCH ROLLS-ROYCE BUILDING 32-34 EAST 57TH STREET… | ||
| img210 | Statement from the New York Athletic Club for W.A. Robotham's guest expenses. | ||
| View original record | STATEMENT New York, May 28, 1934 Mr. W.A. Robotham c/o J.S. Inskip I-24 Rolls-Royce, 32-34 East 57th St., New York, N.Y. To New York Athletic Club, Dr. GUEST: 180 Central Park South House Account 2 51… | ||
| img211 | Letter to Rolls-Royce of America regarding an involved account statement and sales. | ||
| View original record | Exptl. Dept. HS/Rm.11/KW. 21st June, 1934. L.A. King Esq., Messrs. Rolls-Royce of America, Inc., 32-34, East 57th Street, New York, U.S.A. Dear Mr. King, Thank you for your letter of June 12th. I… | ||
| img212 | Graph comparing the Brake Mean Effective Pressure curves for various Cadillac and Rolls Royce products. | ||
| View original record | G.M.C. CORRECTION TO .103 .F. BRAKE MEAN EFFECTIVE PRESSURE CURVES CADILLAC AND ROLLS ROYCE PRODUCTS B.M.E.P. DEGREES Left Y-Axis: 150 50, 140 40, 130 30, 120 20, 110 10, 100, 90, 80 Right Y-Axis:… | ||
| img213 | Comparison of engine valve timings and durations for various vehicle models including Cadillac, La Salle, Standard, and Bentley. | ||
| View original record | Top Left Corner: LB-NO. IN: Main Table: DURATION. INLET | EX: 204 | 206 | CADILLAC V.12 197 | 196 | CADILLAC V.16 210 | 210 | LA SALLE LINE 8. 213 | 230 | STANDARD 20/25 234 | 238 | BENTLEY 3 1/2… | ||
| img214 | Letter from Wright Aeronautical Corporation regarding Conqueror engine performance with Prestone coolant and Stellite exhaust valve issues. | ||
| View original record | Handwritten Top: .R.H.E Please note & return R.A.R WRIGHT AERONAUTICAL CORPORATION PATERSON, N. J. U. S. A. VICE-PRESIDENT July 26, 1934. Mr. W. A. Robotham, Rolls-Royce Ltd., Derby, England. Re:… | ||
| img215 | Graph detailing heat rejection to Prestone during performance characteristics tests for a GV-1570-D Conqueror engine. | ||
| View original record | WRIGHT AERONAUTICAL CORPORATION CURVE 913 GV-1570-D 6.2:1 C.R. - CONQUEROR ENGINE NO. 22006 - HEAT REJECTION TO PRESTONE DURING PERFORMANCE CHARACTERISTICS TESTS - FEB. 9 and 10, 1932. - PROP. LOAD… | ||
| img216 | Performance characteristics chart for a Wright Aeronautical Corporation GV-1570-D Conqueror engine at full throttle. | ||
| View original record | WRIGHT AERONAUTICAL CORPORATION Curve 912 GV-1570-D 6.2:1 C.R. - CONQUEROR ENGINE NO. 25006 - PERFORMANCE CHARACTERISTICS AT FULL THROTTLES. FEBRUARY 9 and 10, 1932. Left Y-Axis: M.E.P. Lbs./Sq. In.… | ||
| img217 | Letter from Arthur Nutt of Wright Aeronautical Corporation to W.A. Robotham regarding a planned visit to England. | ||
| View original record | USA WRIGHT AERONAUTICAL CORPORATION PATERSON. N. J. U. S. A. VICE-PRESIDENT July 27, 1934 Mr. W.A. Robotham Rolls Royce Ltd. Derby, England Dear Mr. Robotham: I am planning to be in England about the… | ||
| img218 | Letter from Harrison Radiator Corporation regarding a potential visit by Mr. Ellor. | ||
| View original record | HARRISON RADIATOR CORPORATION LOCKPORT, NEW YORK USA January 15, 1935 Mr. W. A. Rowbotham Rolls-Royce Limited Derby England Dear Mr. Rowbotham: Appreciate your letter of December 27, and wish to… | ||
| img219 | Letter of introduction for Mr. William Finlay from Wright Aeronautical Corporation. | ||
| View original record | WRIGHT AERONAUTICAL CORPORATION PATERSON, N. J. U. S. A. OFFICE OF THE PRESIDENT February 11, 1935. Mr. W. A. Robotham, Rolls Royce, Derby, England. Dear Mr. Robotham:- Mr. William Finlay, our Chief… | ||
| img220 | Letter to G.W. Vaughan of the Wright Aeronautical Corporation regarding a visit from Mr. Finlay. | ||
| View original record | U S A Exptl. Dept. Hs/Rm/22/KW. 14th May, 1935. G. W. Vaughan, Esq., The Wright Aeronautical Corporation, Paterson, New Jersey, U.S.A. Dear Mr. Vaughan, Thank you for your letter of February 11th,… | ||
| img221 | Letter from G. W. Vaughan of Wright Aeronautical Corporation to W. A. Robotham concerning a visit from Mr. Finley. | ||
| View original record | 63a. WRIGHT AERONAUTICAL CORPORATION PATERSON, N. J. U. S. A. OFFICE OF THE PRESIDENT May 28th, 1955. Mr. W. A. Robotham, Rolls Royce, Ltd., Derby, England. Dear Mr. Robotham:-- [Text crossed out: I… | ||
| img222 | Thank you letter from Wright Aeronautical Corporation following a visit to Derby. | ||
| View original record | USA WRIGHT AERONAUTICAL CORPORATION PATERSON, N. J. U. S. A. June 13, 1935. Mr. W. A. Robotham, Rolls Royce, Ltd., Derby, England. Dear Mr. Robotham: I would like to express my thanks and appreciation… | ||
| img223 | Letter from M. B. Gordon to Mr. W. A. Robotham thanking him for his courtesy during a visit to Derby. | ||
| View original record | M. B. GORDON 1120 EAST 19TH STREET PATERSON, N.J. October 22nd, 1935. Dear Mr. Robotham: Now that I am back home again and burdened with the usual harness and routine, I want to again tell you how… | ||