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).
List of US users and applications for an oscilloscope, with user testimonials.
| Identifier | ExFiles\Box 53\1\ Scan052 | |
| Date | 3rd September 1927 guessed | |
| 12 SOME USERS—UNITED STATES OF AMERICA—(continued). Detroit Edison Co., Inc. De Laval Separator Co., Inc. Dusenbery Automobile & Motors Co.. Inc. Ford Motor Co. General Electric Co., Inc. Miller Rubber Co. Oakland Motor Car Co. Reo Motor Car Co. Rich Tool Co. Rotor Corporation of America. Saco-Lowell Shops. Union Special Machine Co. Waukesha Motor Co. Westinghouse Electric & Manufacturing Co. Western Electric Co. Willys-Overland Co. Willcox & Gibbs Sewing Machine Co. Chicago Pneumatic Tool Co. Servel Corporation. Dayton University. Extracts from Testimonials. The DEUTSCHES FORSCHUNGSINSTITUT fuer TEXTILINDUSTRIE in Dresden. (Direktor Prof. Dr. Krais). In Besitz Ihrer Anfrage . . . . teilen wir Ihnen mit, dass wir das Oscilloskop lediglich fuer einen ganz bestimmten Zweck verwenden, naemlich fuer einen Spindelpruefungsapparat mittels dessen wir den Kraftverbrauch von Spindeln, den Schlupf der Wirtelschnur, die Eignung von Spindeloelen usw. zu pruefen im Stande sind. FUER DIESEN ZWECK HAT DAS OSCILLOSKOP SICH GUT BEWAEHRT. INSTITUT fuer KRAFTFAHRWESEN an der TECHNISCHEN HOCHSCHULE in Dresden. Auf Ihre Anfrage . . . . teile ich Ihnen mit, dass das Oscilloskop noch nicht oft genug benutzt worden ist, um ein abschliessendes Urteil ueber dasselbe abgeben zu koennen. Bei der bisherigen Benutzung LEISTETE ES RECHT WERTVOLLE DIENSTE. COMPONENTS, LTD., Birmingham. Useful information has been obtained regarding the behavior of the clutch under different conditions of loading and speed, with different materials and surface dressings, it being possible to observe the smallest amount of slipping or creeping of the surfaces under actual working conditions. 13 SOME APPLICATIONS—(continued). to ascertain whether all parts are operating satisfactorily, whether any movements are lagging due to excessive backlash of gears, and so on. Calico Printing. (Type “B’). Increased production without affecting its quality, by being able to view patterns—particularly fine patterns—as if stationary or slowly creeping, thereby being able to speed up the printing machines to the maximum possible without detriment. Shoe Making Machinery. (Type “A”). Examination of the movements of all machines used in this trade, and the detection of faults. Torsion Measurements. (Type “B”). Obtaining the angle of torsion in shafts and, thus, a measure of the H.P. transmitted. The instrument is used with a vernier protractor and magnifying glass. Vibrations. (Type “A”). The Oscilloscope definitely gives the frequency of a vibration in relation to the speed of the shaft driving the gearbox, the point in angular displacement at which it occurs, the amplitude comparatively, and the direction; it also differentiates between primary and secondary vibrations. Ascertaining Cyclic Irregularities. (Type “A” ONLY). When used with a simple timing arrangement, the Oscilloscope will enable the points to be obtained for an accurate curve of the cyclic irregularity of an engine. The procedure is simple and takes up very little time. Torsional Vibrations. (Type “A” ONLY). Points are obtainable for accurate torsional vibration curves. THERE ARE NUMEROUS OTHER APPLICATIONS. How to use the OSCILLOSCOPE. If you are carrying out prolonged tests or accurate quantitative investigations mount the Gearbox in its Stand and directly connect its shaft—by means of a simple form of adaptor—to any suitable shaft end (of your machine) which has a rotary motion; if you are carrying out a cursory examination to know exactly how your machine is operating, place the special adaptor provided in the Gearbox shaft and hold it against the shaft end of your machine, in the same manner as a hand tachometer, | ||