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 Cadillac cranking jaw for a harmonic balancer.
| Identifier | ExFiles\Box 125\1\ scan0315 | |
| Date | 29th April 1930 | |
| THIS DIMENSION MUST BE MAINTAINED CHAMFER 45° TO 1 5/8 DIA. 1.866 / 1.875 MAJ. DIA. 1.866 / 1.870 TURN DIA. 1.562 / 1.566 DIA. 1.783 / 1.793 RECESS DIA. SECTION A-A 1 7/8 -16 AMER. THD. 1.8344 / 1.8384 P.D. CLASS 3 SPECIAL 35/64 .235 / .240 1/16 R 3/16 7/32 ANGLE OF CUTTER 73° 8° 1 7/16 DIA 2 1/8 5° REQUISITIONED COPPER PLATE BEFORE CUTTING VANS NOV 24 1936 REFER TO HEAT TREAT SPEC. NO. 1 C-83150 CHECK 1/10 OF 1% OF EACH SHIPMENT FOR CHEMICAL ANALYSIS DECIMAL DIMENSIONS MUST BE MAINTAINED -- .010 EACH WAY CAN BE ALLOWED ON DIMENSIONS NOT OTHERWISE SPECIFIED. CADILLAC MOTOR CAR Co. DETROIT, MICH. PART NAME: JAW- HARMONIC BALANCER CRANKING MATERIAL: G.M.C. #1120 STEEL CHANGE RECORD: DATE: 3-10-33, MARK: B, CHANGE RECORD: 1.866-1.875 MAJ. DIA. ADDED, ORDER NO.: C64930 DATE: 10-21-30, MARK: A, CHANGE RECORD: WAS 1.559-1.562, ORDER NO.: C54601 DR.: GELFAND | ||