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).
Drawing of an Air Line Unit for a 40-50 HP model (Sprengel).
| Identifier | ExFiles\Box 44\2\ Scan134 | |
| Date | 4th May 1925 | |
| 18'-0" ± 1/2" .125" +.000" O.D. Silver Soldered. Air Line to be treated as a unit. Air Line is not to be interfered with in any way, especially not to be soldered or brazed after receipt. Air Line is dried by special process after manufacture by H.M.H.LTD, and will remain dry in stores etc, and ready for installation at any time if not interfered with. See Drawing Number K.S. 202.D. H.M. HOBSON. LTD 47-55 THE VALE. ACTON. W.3. TITLE: Rolls Royce 40-50.H.P. Air Line Unit. (SPRENGEL) NO. OFF PER SET: 1. WHEN ORDERING QUOTE THIS DRAWING NO: K.S.224.D. MATERIAL: VARIOUS. SPECIFICATION / PATTERN / STAMPING MACHINE WHERE MARKED F.{Mr Friese} MACHINE ALL OVER. TOLERANCE ON MACHINING DIMENSIONS .010 UNLESS OTHERWISE STATED. THIS DRAWING CANCELS DRAWING NO THIS DRAWING IS CANCELLED BY DRAWING NO H.K.S. TELEGAGE. DRAWN: W. TRACED: G.{Mr Griffiths - Chief Accountant / Mr Gnapp} CHECKED: L. DATE: 4-5-25 | ||