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).
Catalogue page for Hamill Flow Meters and Wimperis Accelerometers.
| Identifier | ExFiles\Box 165\3\ img055 | |
| Date | 28th April 1924 guessed | |
| HAMILL FLOW METERS. For indicating the rate at which the Petrol is being consumed by the Engine. INVALUABLE ON A CAR OR TEST-BENCH. Price ... £7 : 7 : 0 A separate Pamphlet giving full particulars of this instrument can be had on application. 5 WIMPERIS ACCELEROMETERS. For measuring Resistance and Horse Power. Price ... £9 : 9 : 0 We are manufacturers of the above well-known instruments, and on application shall be pleased to send a special Pamphlet respecting same. 6 Text on Hamill Flow Meter: GALLONS PER HOUR HAMILL PATENT FLOW METER ELLIOTT BROS LONDON No... MFRS. Text on Wimperis Accelerometer: ACCELERATION IN LBS PER TON UPWARD GRADIENT ACCELEROMETER DOWNWARD GRADIENT RETARDATION IN LBS PER TON DIRECTION OF MOTION WIMPERIS' PATENT ELLIOTT BROTHERS (LONDON) LTD. No 107 THIS GAUGE IS SENT OUT ON A LEVEL KEEL. IF THE BUBBLE IS NOT CENTRAL, TURN THE LEVELLING SCREW 'L' UNTIL IT IS. THE UPPER SCALE MEASURES ACCELERATION, WHILE THE LOWER MEASURES RETARDATION. THE RESISTANCE OF THE CAR ON THE LEVEL IS THE RETARDATION FIGURE OBTAINED WHEN THE CAR IS COASTING. THE GRADIENT POWERED IS SHOWN BY THE ACCELERATION SCALE WHEN THE CAR IS ASCENDING. THE NET LBS PULL PER TON IS THE READING ON THE CAR ASCENDING - THE READING WHEN COASTING. H.P. AT AXLES = NET LBS PULL PER TON X MILES PER HOUR / 375. | ||