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).
Manufacturing operations and cost breakdown for a Bentley Pedal Gap Plate, part number FB.3204.
| Identifier | ExFiles\Box 148\5\ scan0371 | |
| Date | 12th July 1938 | |
| PEDAL GAP PLATE - Cont'd.{John DeLooze - Company Secretary} BENTLEY The Bentley Gap Plate, FB.3204 is of single piece construction, being at present sandcast at R.R. The total foundry time is 144 minutes, and the material cost is 4/2d. The operations are as follows :- OP NO. | OPERATION | SETTING TIME | TIME ALL: | COST 1. | Drill five holes in flanges, 4 small holes & 4 holes in large flat face. | 15 m.{Mr Moon / Mr Moore} | 3 m.{Mr Moon / Mr Moore} | ½d 2. | Drill all inclined holes & countersink. | 15 m.{Mr Moon / Mr Moore} | 15 m.{Mr Moon / Mr Moore} | 1d 3. | Csk. holes in flanges & 2 holes in flat face. | | 2 m.{Mr Moon / Mr Moore} | ½d 4. | Tap. | | 1½ m.{Mr Moon / Mr Moore} | ¼d 5. | Mill angular face. | 30 m.{Mr Moon / Mr Moore} | 12 m.{Mr Moon / Mr Moore} | 2¼d 6. | Mill groove | 45 m.{Mr Moon / Mr Moore} | 15 m.{Mr Moon / Mr Moore} | 2¾d 7. | Mill boss face. | 30 m.{Mr Moon / Mr Moore} | 5½ m.{Mr Moon / Mr Moore} | 1d 8. | Remove burrs. | | 5 m.{Mr Moon / Mr Moore} | 1d £. s. d.{John DeLooze - Company Secretary} Material Cost.................. 0. 4. 2. Direct Foundry Labour Cost... 0. 2. 3. Direct Machine Labour Cost... 0. 0. 9¼d Charges...................... 0. 6. 0½d.{John DeLooze - Company Secretary} TOTAL FACTORY COST............0. 13. 2¾d | ||