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).
Standardisation of a 'General' Bypass oil filter from British Filters Ltd.
| Identifier | ExFiles\Box 171\5\ img069 | |
| Date | 15th November 1938 | |
| RR 755A (10H) (49968) 19/10/37 C.E.Co. COMPLETED 13.1.39. 25/W.9.IPx WRAITH STANDARDISATION OF PARTS Date Issued: 15.11.38. Sheet No. W.9. Drg. No. ECD.799 L.O.P.S. Description: "GENERAL" Bypass oil filter (British Filters Ltd) Purpose: Is an improvement over existing AC in that it has detachable filter element also has greater capacity. Brief Report and Remarks: 'General' filter is running 15,000 miles on 8.B.V. and several experimental cars are running with this type. It has approximately the same cleaning ability as the 'AC' but about 10% greater capacity, that is it would last longer mileage before replacement. The great advantage however is that the element is detachable and can be removed without having to undo unions etc. as in the case of the A.C. The replacement of the 'General' costs the customer approx. 7s. 6d. as against 17s. 6d. for the A.C. When recommended for Introduction: Report References: BY.{R.W. Bailey - Chief Engineer} RM.{William Robotham - Chief Engineer} By: BY.{R.W. Bailey - Chief Engineer} RM.{William Robotham - Chief Engineer} Da{Bernard Day - Chassis Design}: DA.{Bernard Day - Chassis Design} Mx{John H Maddocks - Chief Proving Officer}: MX{John H Maddocks - Chief Proving Officer} Old Parts: Material £0.3.10. Labour £0.2.5. Burden £0.4.3. Total £0.10.6. New Parts: £0.10.5. £0.2.3. £0.3.11. £0.16.7. Increase in Cost: £ 0. 6. 1d. GRL 14/11/38 Cost of Tools: £17.10.0. Production Position and Comments: The 'General' Bypass Oil Filter which is an improvement over the existing A.C. filter can be introduced without scrap at the 1st. chassis in 'C' series. There is a tool cost of £17.10.0d. and an increase in Factory cost of 6/1d. per chassis. Authorisation to Proceed. Introduce on the C Chassis in C Series. Sg.{Arthur F. Sidgreaves - MD} Signature Date: 9/1/39. Hs.{Lord Ernest Hives - Chair} Signature Date: 9/1/39. | ||