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).
Blueprint for the machining and specification of an inner top ball pad.
| Identifier | ExFiles\Box 5a\2\ 02-page217 | |
| Date | 19th August 1924 | |
| Top Left Reference: N.F.329/25. DET. REQ'D 24. 19.8.24 Operations Table: No. | OPERATION | MACHINE | TOOL | TOOL No. 1 | SAVE CAST BAR 2 | TURN, BORE & PART OFF | H.T.B. | KNIFE, ROUGH BORING | 72851 3 | FORM SPHERICAL SEATING | 4 | RADIUS DRILL, DEPTH GAUGE | 75445, 75430 4 | MILL CLEARANCE SLOT FOR BALL END STUD | 12 S.G.C.N. | VICE JAWS, GAUGE | 21321, 22530 4 | MILL FLAT ON HEAD | 5VM | CUTTER | F4830 4A | MILL GROOVE INSIDE SPHERE | 5VM | CUTTER | F4830 5 | REMOVE BURRS | GEN. FITTER 6 | TIN | TINNERS 7 | HAND REAM SPHERICAL SEATING. SEE INNER TUBE | FITTERS | TOP HAND REAMER, SLIP GAUGE | NO-18, NO-23 Drawing Notes & Dimensions: Stamps: 9551/P, 1281A/F DRILL .105's DIA & REAM FOR .125 DIA TAPER PIN IN POSITION WITH INNER TUBE TAPER 1 IN 6 ON DIA .575 DIA - .001 .500 DIA + .001 .620 DIA + .002 .749 DIA - .002 .900 + .003 - .000 1.675 + .002 - .003 1.850 1.400 - .015 .310 + .010 .375 PAD .450 DIA SPHERICAL .350 R .540 OIL GROOVE - .0625 WIDE SECTION OF CUTTER PINNED & SWEATED TO INNER TUBE TINNED WHERE MARKED TT MACHINE ALL OVER OR WHERE MARKED THUS ✓ Title Block: N°3CH 1284 REPLACE ALL COPIES OF THIS TRACING IN THE FOLLOWING DEPTS- DRAWN BY: [illegible] CHECKED BY: JCS APPROVED BY: HPW LIMITS O.K.: [illegible] DATE: 19-8-24 USED ON: SECT N°: 2 SCALE: 2 HEAT TREAT: BRINELL- TITLE: BALL PAD (INNER) TOP MATERIAL: STANTON, 8Z PLC 10% LEAD SPECIFICATION N° OFF: 214A Stamps: RECEIVED 17 MAR 1930 DERBY Drawing Number (Large Font): F53218 | ||