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 proposal for a modified starter automatic switch, deleting the teazer carbon contacts.
| Identifier | ExFiles\Box 171\2\ img013 | |
| Date | 16th October 1931 | |
| RR 755 (10M) (8459. 24-10-30) 6/3165 ORIGINAL [stamp] COMPLETED 2. 3. 32 [stamp and handwritten] [Document has a large purple 'CANCELLED' stamp across the center] STANDARDISATION of CHASSIS PARTS Date 16.10.31 X No. 6048 Drawing LeC.2804 No. D.73320 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. D Use existing stock Alteration effective on future Chassis. Description of Parts. SEQUENCE STARTER AUTOMATIC SWITCH WITH MODIFIED MAIN SWITCH TO LeC.2304 AND WITH TEAZER CARBON CONTACTS DELETED. Origin. To prevent sparking at the main switch copper contacts and to simplify assembly of relay switch. Experimental Test Report. Bench tests with chronograph show that carbons now make way before coppers. retiming the operation of the switch so that the main copper contacts close before the teazer circuit is broken the necessity for teazer carbon contacts is obviated there being little or no current at the teazer contacts at break. Test Report. Used on 25-EX for 22,000 miles satisfactor-ily. LeC.2804 also tried out on the switch on 27-EX for 7,000 miles OK. Weight of Old Part. Cost of Old Part. £ - 5-7d. Weight of New Part. Cost of New Part. £ - 5-2d Difference per Car. Difference per Car. £ - - 5d. Decrease Signature from Cost Dept. that above is correct. Cost of Parts in Works which will be scrapped if commenced on :- Series.........£....... Series.........£....... Series.........£....... INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 1.3.32 | Agreed SG.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 21/10/31 | Agreed & MR be very careful about deliveries. WOR.{Arthur Wormald - General Works Manager} | 16.10.31. | To standardise. In fact as this apparatus seems to have C. | 19.10.31. | Agreed & reliable as far as I know. WAP RG.{Mr Rowledge} | 19.10.31. | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 19.10.31. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 16.10.31. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 19.10.31. | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 22.10.31. | Agreed AE. PN.{Mr Northey} | 19.10.31. | Agreed PN.{Mr Northey} HS.{Lord Ernest Hives - Chair} | | Agreed. | ||