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 from H.M. Hobson, Ltd. discussing the deletion and modification of a vent pipe on a gauge.
| Identifier | ExFiles\Box 44\2\ Scan151 | |
| Date | 15th June 1928 | |
| X4038 CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, AIR MINISTRY AND TO THE DOMINION & FOREIGN GOVERNMENTS. PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM, NOT TO INDIVIDUALS. TELEPHONE: CHISWICK 4231. (4 LINES). TELEGRAMS: "ASSEMBLAGE, LONDON". H.M. HOBSON, LTD. 47-55, ACTON VALE, LONDON, W.3. MANUFACTURERS OF Hobson K-S Petrol Telegage AND MOTOR ACCESSORIES. WORKS: LONDON AND WOLVERHAMPTON. ENCLO................. OUR REF. TPS/MW YOUR REF. Hs{Lord Ernest Hives - Chair}/Rml/LG 15th June 1928. For the attention of Mr. W.A. Robotham. Messrs. Rolls-Royce, Ltd., Derby. Dear Sirs, We beg to thank you for your letter of the 14th inst., with reference to the deletion of the vent pipe, and we agree with yourselves that no material difference would be noted in the behaviour of the gauge under normal conditions on your car. The vent pipe is intended as a safety factor on the gauge when abnormal conditions exist, such as the temporary generation of pressure in the tank during unnatural conditions at filling up, In the usual way, The King-Seeley Corporation, who have had a large experience over millions of cars fitted with their gauge, insist that the vent pipe shall go direct to atmosphere. As you were unwilling to carry this out, to meet you in the matter we consented that as a modification our vent pipe should | ||