Technical drawing of a Hypoid Pinion.
| Identifier | ExFiles\Box 98\1\ scan0169 | |
| Date | 3rd August 1939 | |
| HYPOID PINION ± 1/64" Limit on Fractional Dimensions Break All Sharp Corners COPPER PLATE AS SHOWN CARB 1700° QUENCH FROM BOX FILE HARD DRAW AS SHOWN STAMP:- MADE IN U.S.A. PART NO SAE4620 COPPER PLATE COPPER PLATE DRAW PROOF SPOT NO RUNOUT PINION OFFSET .650" B.C. 45° CHAM TO 1/2" DIA 1/16 x 60° CENTER BOTH ENDS Dimensions and Tolerances: TR {Capt. F. W. Turner - Finance} 1.595 +.0005 -.0000 GR {George Ratcliffe} 1.585 +.0010 -.0000 TR {Capt. F. W. Turner - Finance} 4.085 +.0000 -.0005 GR {George Ratcliffe} 4.075 +.0000 -.0010 TR {Capt. F. W. Turner - Finance} 3.562 +.0020 -.0000 S.GR {George Ratcliffe} 3.555 +.002 -.000 GR {George Ratcliffe} 3.505 +.005 -.000 TR {Capt. F. W. Turner - Finance} 1.402 +.0005 -.0000 S.GR {George Ratcliffe} 1.387 +.0005 -.0000 GR {George Ratcliffe} 1.377 +.0005 -.0000 1 1/8 - 12 THDS. 4.525" MOUNT DIST Title Block: For: ROLLS ROYCE LTD. Teeth: 13 Face: - Pitch: - Overall: - Patt. No.: - Out. Dia.: 3.375 +.003 -.003 Mat'l: SAE4620 Pitch ∠: 19° 0' Face ∠: 21° 17' Forging Casting: Keyway Width Brinell Limits Depth Keyway Across Bore Mate No.: GB4995 Teeth in Mate: 43 GLEASON WORKS Rochester, N.Y. U. S. A. {Mr Adams} No. Req'd: - By: N.H.L Chk'd: ANDERSON Date: Aug 3 1939 Order No.: - Piece No.: GB4994 File No.: FOR CUTTING DATA SEE SUMMARY Handwritten Annotation: 9120 / 87 | ||
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).