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 a Hypoid Gear with manufacturing specifications.
| Identifier | ExFiles\Box 98\1\ scan0114 | |
| Date | 1st November 1934 | |
| File No. SH-3325 For Cutting Data See Summary FULL SCALE HYPOID GEAR +-.01" Limit on Fractional Dimensions Break all sharp Corners PINION OFFSET .650" B.C. COPPER PLATE AFTER CUTTING - PROTECT TEETH CARBURIZE 1700° (.035"-.045" CASE) QUENCH FROM BOX FILE HARD CUT+TEST RING #F12181-3306 ARBOR #F12181-B3 CLAMP #F11843-AD-1 LAP+TEST RING #F12181-5312 ARBOR #F12181-U2 CLAMP #F11843-AD-1 PINION C/L 3/16" 1/8" R 9/16" 3/32" FLAT 1/32" R 3/8" R STAMP: 43-10 MADE IN USA BACKLASH 1.883" TO APEX 1.950" MOUNT. DIST. 5/16" BORE 5.360" +.001 -.000 GRIND 5.375" +.0005 -.0000 45° CHAMF TO 5 17/32" DIA. 3 3/8" RADIUS 1 HOLE FOR DRIVER 23/64" DR .375" +.0005 -.0000 STD. RM.{William Robotham - Chief Engineer} 3/8" DEEP - CHAMF TO 7/8" DIA. FORGING TO TEST 163-192 BRIN MATE #GB 2352 #HP-10-43T OVERALL 1.177" For ROLLS ROYCE LTD. Teeth: 43 Pitch: 5.06 D.P. O.{Mr Oldham} Dia.: 8.545" +.000 -.005 Press Angle: Pitch <: 75°-58' Face <: 77°-14' Material: SAE 4620 No. Req'd By: GOVE Ch'k'd: LAMB GLEASON WORKS ROCHESTER, N.Y. U.S.A. Order No. Date: Nov. 1, 1934 Piece No.: GB.1502 | ||