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).
Technical drawing for a Piston Ring.
| Identifier | ExFiles\Box 132\4\ scan0037 | |
| Date | 5th July 1935 | |
| THE ASSOCIATED EQUIPMENT CO. LTD. SOUTHALL, MIDDLESEX. ETC. ? 2 TRACINGS THE ARTICLE SHOWN HEREUNDER IS THE SUBJECT OF CONTRACT. SUPPLIERS SHOULD THEREFORE REFER ALL ENQUIRIES FOR SAME FROM OTHER SOURCES TO A.E.C. SOUTHALL. DRAWING NOT TO BE SCALED. B.E.S.A. STD. PRESSURE HERE TO CLOSE RING TO D DIA. SIDES OF RING TO BE LAPPED AFTER GRINDING. TO BE HARDENED. BRINELL HARDNESS N° 400 - 475 FOR APPROVED SOURCES OF SUPPLY SEE SKSO-804 PISTON RING .010" TO .014" END CLEARANCE WHEN IN CYLINDER DIMENSIONS: W +0 -0.125, T +2 0, D DIA. (BORE OF CYLINDER) +- .025, 45° TITLE BLOCK: DRAWN TRACED: FHScott CHECKD: Cut PASSED: J.Wms. G: GROUND DATE: 5-7-35 ST.{Capt. P. R. Strong} 0512 A.L. ⊕ MACHINED ALL OVER f MACHINED G GROUND NEWALL STANDARD LIMITS ARE USED ONLY WHERE LETTER SYMBOL GIVEN B FOR HOLES, D DRIVING FIT, X RUNNING FIT P PUSH FIT, F FORCE FIT, Y "" MACHINED DIMENSIONS WITHOUT LIMITS TO BE WITHIN +-0.2 m/m OR .008" OF GIVEN SIZE MADE FROM: CASTING * MATERIAL LIST No.: 22 MODEL: 4 CYL. OIL ENG. No.OFF: 4 PART N°: A2/11619 ETC ALTERATIONS TABLE: ALL GOODS MUST BEAR OUR PART No., OUR DATE LETTER AND MAKER'S TRADE MARK. ALTERATIONS 1) I-2316, GAP FROM .05 TO .15, I-2442, 7.7.33 2) MAT'L N°22 ADDED, I-2961, 21.6.34 3) GAP FROM .2 TO .3M/M TO .010" TO .014", I-3031, 1.10.34 4) BRINELL N° ADDED, I-3341, 25.2.35 PART N°S A3/11632 & A3/11627 ADDED. SPARES LETTER 26/2/35 PARTS TABLE: HEADERS: T, W, D, PART N° ROW 1: T=3.62, D=108.5, W values: 5, 4.5, 4, 3.5 for PART N° A3/11633 ROW 2: T=3.62, D=108.5, W=3 for PART N° A3/11632 ROW 3: T=3.61, D=108, W values: 6.5, 6, 5.5, 5, 4.5, 4, 3.5 for PART N° A2/11620 ROW 4: T=3.61, D=108, W=3 for PART N° A2/11619 | ||