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).
Finished drawing and forging drawing for a Carrier-Spring-Harmonic Balancer.
| Identifier | ExFiles\Box 125\1\ scan0319 | |
| Date | 2nd June 1931 | |
| TITLE BLOCK: CADILLAC MOTOR CAR Co. DETROIT, MICHIGAN PART NAME: CARRIER-SPRING-HARMONIC BALANCER MATERIAL: G.M.C. #1025 STEEL DRAWN BY: PAY TRACED BY: PAY CHIEF DFTS O.K. PROD O.K. DATE: 6-2-31 STAMP: REQUISITIONED PAID NOV 2 1934 GENERAL NOTES: FINISH ALL OVER. ALL SMALL RADII TO BE 1/16 R.{Sir Henry Royce} UNLESS OTHERWISE SPECIFIED. ALL DRAFT ANGLES TO BE 7° UNLESS OTHERWISE SPECIFIED. CHECK 1 OF 25 OF EACH SHIPMENT FOR CHEMICAL ANALYSIS. DECIMAL DIMENSIONS MUST BE MAINTAINED - .010 EACH WAY CAN BE ALLOWED ON DIMENSIONS NOT OTHERWISE SPECIFIED. THESE DIAMETERS MUST BE CONCENTRIC WITHIN .01 TOTAL INDICATOR READING. LEAST DRAFT POSSIBLE. FINISHED DRAWING FORGING DRAWING DIMENSIONS & FEATURES: SECTION A-A SECTION B-B CHAMFER 45° 1/32 ON FLAT CHAMFER 45° 1/16 ON FLAT 1.985 / 1.989 DIA 1R / 32 1/32 R.{Sir Henry Royce} 5.249 / 5.251 DIA. 5/16 RECESS DIA. SHARP CORNER TO .015 R.{Sir Henry Royce} 3 3/16 DIA. 5 3/16 DIA. 2 1/8 DIA. 1/4 DIA. HOT PUNCH 5 1/16 DIA. 1/2 3/4 .215 / .225 .156 .912 / .920 3/8 45° 89°55' / 90°05' 7/16 DRILL TWO HOLES 29/64 DRILL THRU. 1/2-20 AMER THD. - 5/8 DEEP D .4675 / .4717 RD. CLASS #2 FOUR HOLES EQUALLY SPACED AS SHOWN. 3.120 / 3.125 DIA P.D. 1.425 / 1.432 1.248 / 1.252 .887 / .897 .7125 / .7160 1.1240 / 1.1255 DIA 1.307 / 1.313 DIA .055 / .075 .170 / .180 .3932 / .3952 .7865 / .7905 CHANGE RECORD TABLE: Finished Drawing Changes: DATE: 8-15-33, MARK: C, CHANGE RECORD: WAS G.M.C. #1120 STEEL DATE: 7-14-33, MARK: D, CHANGE RECORD: WAS R675-4701 P.D. DATE: 1-26-32, MARK: A, CHANGE RECORD: 4 3/4 DIA. RECESS REMOVED, ORDER No.: C-62129 8-11-31 DATE: 11-5-31, MARK: [blank], CHANGE RECORD: WAS #1035 STEEL, ORDER No.: C-60279 8-11-31 Forging Drawing Changes: DATE: 8-25-31, MARK: C, CHANGE RECORD: 45° ADDED, ORDER NO.: C-58325 DATE: CR{Mr Cra???ster / Mr Chichester}-3871 8-12-31, MARK: B, CHANGE RECORD: WAS - 5.249 - 5.250 DIA, ORDER NO.: C-58017 DATE: C-69351(?) 8-12-31, MARK: A, CHANGE RECORD: RECESS ADDED, ORDER NO.: C-58017 DATE: C-62129 8-11-31, MARK: [blank], CHANGE RECORD: FORGING ADDED, ORDER NO.: C-58010 DATE: C-60279 8-11-31, MARK: [blank], CHANGE RECORD: TRACED. NO CHANGES, ORDER NO.: [blank] | ||