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 Dunlop Super Double Lift Jack for the chassis.
| Identifier | ExFiles\Box 171\1\ img194 | |
| Date | 21th May 1930 | |
| RR 78B REVISED (10H) (DG 348 19-7-29) BM. 6/543. COMPLETED 4.6.30. STANDARDISATION of CHASSIS PARTS. Description of Parts. DUNLOP SUPER DOUBLE LIFT JACK. Origin. A modification of the present Dunlop Super Double Lift Jack embodying improvements to parts which were unreliable. The actual design unaltered. Experimental Test Report. This jack has been utilised to lift the whole of the front of a P.II car throughout its range of lift 25 times. Also to lift one side of the front from a flat tyre level to inflated level 25 times. After these tests the jack was in excellent condition. Road Test Report. Weight of Old Part. 10 Lbs. Weight of New Part. 10 Lbs. Difference per Car. Nil. Cost of Old Part. £ - 19s. 6d. Cost of New Part. £ - 19s. 6d. Wor.{Arthur Wormald - General Works Manager} 20.6.30. Difference per Car. £ Nil. Signature from Cost Dept. that above is correct. G/Rb.{R. Bowen}19.6.30.G.20.6.30. INITIAL, DATE, REMARKS BJ. Sg.{Arthur F. Sidgreaves - MD}, 28.6.30, Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce}, 2/6/30, Agreed JHR WOR.{Arthur Wormald - General Works Manager}, 22.5.30, Agreed Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge}, 22.5.30, Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design}, 23.5.30, Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer}, 23.5.30, Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer}, 27.5.30, Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer}, 27.5.30, Agreed AH. PN.{Mr Northey}, 23.5.30, Agreed PN.{Mr Northey} CWB., 22.5.30, Agreed C. HS.{Lord Ernest Hives - Chair}, Agreed. Remarks Column Text: One would have thought the test would have been 250 times. The Dunlop Jack for balloon tyres - a sample seen in Derby - had a very short bearing for the overhung bevel pinion, which bearing looked as if would soon wear. We suggest bearing 50% longer. Top Right Section: Drawing No. Part List A Scrap and replace at all costs, including Chassis already delivered to Customers. B Scrap and replace on Chassis in Works. C Scrap present stock and replace on all Chassis not yet handed to test. (Marked with a red X) D Use existing stock Alteration effective on future Chassis. Cost of Parts in Works which will be scrapped if commenced on:- Series.....£..... Series.....£..... Series.....£..... Overlaid Stamp: PLANT ON P.I. CHASSIS 20.6.30 | ||