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).
Test report on a Smith Calorstat, measuring internal volume and sylphon rating under various loads.
| Identifier | ExFiles\Box 39\4\ Scan101 | |
| Date | 8th March 1930 | |
| X3499 SMITH. CALORSTAT. THIS INSTRUMENT WHEN DELIVERED CONTAINED A RATHER HEAVY SPRING THIS WAS REMOVED FOR THE TESTS SHOWN BELOW. TEST 1. ETHER EXTRACTED FROM SYLPHON. INTERNAL VOLUME OF SYLPHON THEN MEASURED WITH WATER. INTERNAL VOLUME 50 C.C'S. TEST 2. SYLPHON RATING. LOADS APPLIED AT END OF LEVER SUPPLIED, BUT LOADS AND DEFLECTIONS GIVEN IN TABLES REFER TO EFFECTS ON CENTRAL SPINDLE. LIFTING FROM MEAN POSITION. DEFL. INS LOAD LB | 0 | 2 | 4 | 6 | 8 | 10 | 12 LOADING | - | .038 | .093 | .156 | .220 | .270 | .296 UNLOADING | .069 | .145 | .203 | .245 | .275 | .296 | .296 PUSHING DOWN FROM MEAN POSITION. DEFL. INS LOAD LB | 0 | 1.5 | 3 | 4.5 | 6 LOADING | - | .018 | .032 | .081 | .113 UNLOADING | .066 | .087 | .102 | .113 | .113 TEST 3. SYLPHON RATING LOADS APPLIED DIRECT TO CENTRAL SPINDLE TO AVOID LEVER FRICTION. LIFTING FROM MEAN POSITION. DEFL. INS LOAD LB | 0 | 2 | 4 | 6 | 8 | 10 LOADING | - | .071 | .137 | .178 | .248 | .278 UNLOADING | .023 | .100 | .156 | .204 | .248 | .278 PUSHING DOWN FROM MEAN POSITION. DEFL. INS LOAD LB | 0 | 1 | 2 | 3 | 4 | 5 | 6 LOADING | - | .028 | .081 | .106 | .165 | .165 | .171 UNLOADING | .021 | .058 | .102 | .136 | .171 | .171 | .171 (P.T.O) | ||