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 poppet valve for a Pierce Arrow 12 & V16 engine, from the Wilcox-Rich Corporation.
| Identifier | ExFiles\Box 173\3\ img055 | |
| Date | 28th January 1933 | |
| FINISH NO. HEAT TREATMENT NO. ALLOWABLE VARIATION ON DIMENSIONS NOT OTHERWISE SPECIFIED TO BE PLUS OR MINUS .010 GRIND SEAT CONCENTRIC WITH STEM WITHIN TOTAL INDICATOR READING DIMENSIONS: 3.384 2 29/32 1 7/8 1 3/8 .6875 .6870 7/16 PART/MATERIAL CALLOUTS: T-1549 T-1700 T-1670 T-1690 T-1680 T-1660 TITLE BLOCK: WILCOX-RICH CORPORATION DETROIT, MICH. FOR: PIERCE ARROW 12 & V 16 THEIR PART NO.: MATERIAL: CWS CH'K'D: R.S.T APP'D: DATE: 1-28-33 NO.: T-1742 ALTERATION BLOCK: ALT. LTR. ALTERATION DATE R.O.D. 8-21-23 | ||