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).
Issue with the plunger of the Autovac Restriction Elbow sticking due to a fine taper.
| Identifier | ExFiles\Box 40\4\ Scan184 | |
| Date | 13th October 1926 | |
| X3579 HS{Lord Ernest Hives - Chair} MR HM{Capt. W. Hallam - Head Repairs} Hm{Capt. W. Hallam - Head Repairs}'s Dept. Hm.{Capt. W. Hallam - Head Repairs} is absent. NRC{N. R. Chandler}3/D13.10.26. Re Autovac Restriction Elbow (F.75341). We have just come across a case of the plunger of the restriction elbow sticking in the closed position, owing to the taper end of the spindle becoming fast in the hole before the piston had reached the end of the cylinder. In this case the piston is about .050 from end of cylinder when the taper limits the movement, and the taper is so fine that it readily sticks against the light spring. We suggest that these valves should be tested to make sure that the piston stops against the end of the cylinder before the taper jams and sticks in the hole. Hm{Capt. W. Hallam - Head Repairs}/NRC.{N. R. Chandler} WPO [STAMPED TEXT] RECEIVED OCT 12 1926 HS{Lord Ernest Hives - Chair} XI XII I X IX VIII VII VI V IV III II Hm.{Capt. W. Hallam - Head Repairs} in [WATERMARK] MADE AT CROXLEY | ||