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).
Progress meeting report discussing modifications to parts like silencer straps, a water pipe, and a pressure feed pump.
| Identifier | ExFiles\Box 18\6\ Scan030 | |
| Date | 6th September 1920 | |
| X2365 To By.{R.W. Bailey - Chief Engineer} from Bp. Mr. [REDACTED] H.S. [REDACTED] B.T. [REDACTED] c. to H.{Arthur M. Hanbury - Head Complaints} c. to CO. c. to Wor.{Arthur Wormald - General Works Manager} Rnl/89319. PROGRESS MEETING. REPORT FOR MONDAY, SEPT. 6TH., AT WHICH MR. BAILEY, MR. HIVES, MR. SWIFT, MR. ELLIS, MR. HARGREAVES, & BN.{W.O. Bentley / Mr Barrington} WERE PRESENT. 1. E.{Mr Elliott - Chief Engineer} 17436. Front Silencer Lagging Strap. The Production Dept. proposed to increase the number of straps for the front silencer from two to three, in order to prevent the aluminium sheet from buckling in centre and ends. This was agreed. 2. E.{Mr Elliott - Chief Engineer} 527. Silencer Lagging Strap. The Production Dept. desired to correct a Pre-War error in the dimensioning of the inside diameter of the Silencer lagging Strap from 5.312" to 5.250". This was agreed. 3. E.{Mr Elliott - Chief Engineer} 1041. Water Pipe-Radiator to Pump. The original dimensions for this part which indicate the angle and set of the pipe are in error, and the Production Dept. desire to correct this. This was agreed. 4. Pressure Feed Pump. (a) Cylinder. E.5205. (b) Piston. E.{Mr Elliott - Chief Engineer} 5207. (c) Packing Piece. E.{Mr Elliott - Chief Engineer} 8913. The Production Dept. reported that difficulty was being experienced with the Production Air Pressure Pumps owing to the low minimum pressure obtained. The worst pump would not maintain more than 1 lb. 13 ozs. per sq. ins. The Works had been instructed to correct this by fitting a thinner Packing Washer between cylinder and body to increase the compression ratio. The detailed drawings were ascertained to quote dimensions and limits which gave a clearance between piston and cylinder of maximum two thousandths and minimum one thousandth. It was agreed that these limits and dimensions should be modified to give a maximum of one thousandth and a minimum of half a thousandth clearance, and that selective assembly should be adopted for this part. Mr. Swift pointed out that all "J" series pumps were completed and that the next series were not in operation, and that it would be necessary to continue fitting the "J" series with increased compression ratio until some new pistons had been made with finer clearances in existing cylinders. The old pistons would be used in "K" series with cylinders made to suit. This was allowable as it was agreed that pistons and cylinders should not be interchangeable. It was agreed that the increased compression should only be used for the minimum (Contd) | ||