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 Tappet, detailing dimensions, materials, and manufacturing processes.
| Identifier | ExFiles\Box 6\6\ 06-page262 | |
| Date | 19th August 1937 | |
| Ex 27960A 935 DIA AT 45° BOTH ENDS 1.875 SPIRAL GROOVE .075-.085 WIDE x .0125-.0155 DEEP x 1.875 PITCH R.H. A 0.005 +.00 0.425 DIA +.00 FLAT 0° 45' SECTION OF END 'A' BEFORE CHAMFERING SCALE 2/1 1.0625 DIA +.002 .525 -.110 .400 -.010 .005 R HOLE .080 DIA +.00 HOLE .1875 DIA DRILLED ON C/L OF GROOVE +.005 TO BE CHILL CAST ON THE SPHER. & END TO GIVE A BRINELL OF 530 .050 SPH. RAD. +.01 .075 R .300 +.005 1.450 +.010 TAPPET 1/C 12 WORTH VALVES & FITTINGS ROLLS-ROYCE, LTD. PRINT ROOM AUG 19 1937 DERBY SEE EX279603 FOR PARTS 5/H | ||