From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Letter offering the sale of patents for DRAKE Lock-Nuts.
| Identifier | ExFiles\Box 77\5\ scan0224 | |
| Date | 23th September 1921 | |
| X1221 WOR{Arthur Wormald - General Works Manager} OCT 11 1921 RECEIVED 1273 Balboa Avenue, BURLINGAME, California. U.S.A. September 23 1921. Messrs Rolls-Royce Ltd., Conduit Street, LONDON.W. Attention of Claude Johnson,Esq., Gentlemen, Herewith you will receive sample DRAKE Lock-Nuts. Also blue print and other printed matter. These samples are self-explanatory; it is my wish that your engineers put them to any test they may devise, where there is any amount of vibration. In U.S.A. the DRAKE Lock-Nut is being used (30 million in 1920) on railway engines, on marine and Diesel engines on ships' deck machinery, on automobile crankshaft and connecting rod bearings, on motorcycles and ordinary bicycles, on heavy-duty mining machinery, on U.S.A. aeroplanes and engines, on Caterpillar and other makes of tracklayer tractors, on rock and oil drills, on conveying machinery and in multitudinous other places where there is any vibration. Eliminating spring washers, castellated nuts, cotter pins, and lock screws. The DRAKE Lock-Nut is manufactured on standard mach- inery and by comparatively unskilled labor; and 20% cheaper than any other type of lock nut in England. The DRAKE Lock-Nut is superior to all other lock nuts in that it is composed of 2 separate simple pieces; no special fitting instructions or tools or intelli- gence are necessary for its application; it can be used over and over again without damage to itself. I own and offer for sale (subject to the conditions set out below) the LETTERS PATENT of Great Britain, France, Italy and Norway at the following prices singly. GREAT BRITAIN 106449 Feb 2 1917 $ 50,000.00 FRANCE 484675 Mar 3 1917 $ 25,000.00 ITALY 465/247 Mar 5 1917 $ 20,000.00 NORWAY 29808 Mar 20 1917 $ 15,000.00 ........... ........... $110,000.00 one hundred and ten thousand dollars. GOLD. or if all these patents are purchased at one time for the sum of one hundred thousand dollars GOLD. | ||