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 suction chamber.
| Identifier | ExFiles\Box 122\4\ scan0010 | |
| Date | 28th December 1926 | |
| IT IS IMPORTANT THAT THESE BORES ARE GROUND AT THE SAME SETTING TO OBTAIN AN ACCURATE CONCENTRICITY. GRIND TO A SMOOTH FINISH - LAPPING NOT NECESSARY. DRAWING NO A10136 SEE ALSO THE FOLLOWING OPERATION DRAWINGS UNDERCUT 3.050 DIA. +10, X .150 WIDE +10 1.700 +-5 .025R. .025 -10 45° +-2° 3.000 DIA. +-4 1.991 DIA. +-4 2.000 DIA. +0 1.920 DIA. .050R. .050 +-10 1.850 +-5 1.225 +-25 1.400 +-10 1.050 .375 +-5 .025R. .025 CHF AT 45° -10 +-2° 1.625 DIA. +-4 1.895 DIA. CASTING DIMENSIONS ONLY SCALE 1/2 .250R. 1.700 2.000 3.400 1.500 DIA. 2.250 DIA. 2.875 DIA. 3.500 DIA. SECTION A-A 2 SLOTS .030 DEEP +10 THIS FACE TO BE TRULY SQUARE WITH THREAD AND 1.899 FINE LIMIT DIA. THIS FACE MUST BE TRUE WITH BORES & THREAD TURN 1.991/4 DIA. SCREW 1.997 DIA. 16 T.P.I. R.H. .825 +-10 .200 +-10 .075 +-10 TURN 3.366/4 DIA. SCREW 3.375 DIA. 16 T.P.I. R.H. 3.375 DIA. +10 3.250 DIA. -10 3.290 DIA. .025 CHF AT 45° -10 +-2° .050 +-10 .375 +-25 .075 +-10 45° +-2° E73036 Title Block: DRAWN BY: TRACED BY: G.E.C. CHECKED BY: WARD APPROVED BY: LIMITS: ROLLS-ROYCE OF AMERICA, INC. MODEL: 40-50 SEC.: 5080 WEIGHT: DATE: 12-28-26 SCALE: 1/1 NOT HEAT TREAT TITLE: SUCTION CHAMBER BRINELL: MATERIAL: B4/16 STANTON SPECIFICATION: 218 NO. OFF: 1 MACHINE ALL OVER MACHINE WHERE MARKED | ||