Comparative graphs of ball pin load versus external pressure for Leather Piston and Petrol Pump Diaphragm types.
| Identifier | ExFiles\Box 56\1\ Scan242 | |
| Date | 14th December 1932 | |
| BRITISH MADE J III REAR 40/40 LB NS {Norman Scott} 3497 LEATHER PISTON TYPE HS {Lord Ernest Hives - Chair} 795 14.12.32 TOP GRAPH: 1" STROKE Y-AXIS: BALL PIN LOAD LB (300, 200, 100) X-AXIS: EXTERNAL PRESS LB/D" (5, 10, 15, 20) CURVES: 540 R.P.M., 360 R.P.M., 180 R.P.M., 90 R.P.M. DIAGRAM: CUP LEATHER BOTTOM GRAPH: PETROL PUMP DIAPHRAGM TYPE 1" STROKE Y-AXIS: BALL PIN LOAD LBS. (300, 200, 100, 0) X-AXIS: EXTERNAL PRESS Lbs/D" (5, 10, 15, 20) CURVES: 540 = 1.5 FT/SEC. R.P.M. 360 = 1.0 FT/SEC. R.P.M. 180 = .5 FT/SEC. R.P.M. 90 = .25 FT/SEC. R.P.M. DIAGRAM: BURSTING PRESS 250 LBS/D", BLADDER AND A.C. FABRIC. | ||
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).