Patent GB-169184-A (GB)
Title: Improvements in and relating to integrating apparatus
IPC: G01D1/04
Filed: 1918-12-14
Abstract: 169,184. Cauwenberghe, R. van. July 9, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Periodic - counter and like speed indicators. - The element, the displacement of which is to be measured, is coupled periodically to the first element of a triple elastic device, such first element when freed being zeroized by a spring; the second element of the device is connected to the first by a spring and is freed towards the end of the period and locked again at the end; while the third element is only locked to cover the release of the second and indicates always the movement during the last interval. The locking and unlocking of the elements of the device may be controlled electromechanically or mechanically. Four discs 0, 1, 2, 3 arranged on a shaft x are connected two and two by elastic couplings I, II, III, of which the coupling I is stronger than the coupling II and the coupling II stronger than the coupling III, the disc 1 gearing at k with a shaft a. All couplings are similar to the coupling II, shown in Fig. 2, which has a pair of levers l, l<1> loosely mounted on the shaft x and connected together by a spring s. These levers engage,. without play, pins t1, t2 mounted on the discs 1, 2 which are loose on the shaft. The disc o is normally fixed, and, by varying its position, the zero of the device is changed. The gearing k in the form shown in Fig. 4 comprises a differential gear of which the first wheel R‹ is fixed to the shaft a, a second wheel R, loose on the shaft carries a spur wheel R1<SP>1> gearing with the disc 1,. and planet wheels S are carried by a ring C which may be braked at g<1>. The discs 2 and 3 are toothed so that claws operated by the regulatormay arrest them in any position. The regulator comprises a. distributor revolving with one revolution per cycle and may be driven from a motor, spring, weight, &c., the speed being governed by known means. Fig. 5 shows an electromechanical regulator. A drum T has on its periphery metal strips of different lengths which are electrically interconnected. The contact brush fo. connected to a battery B supplies the drum and the strips energize magnets E1, E2, E3 by means of brushes f1, f2, f3, the magnets when energized locking the ring C, and discs 2 and 3 respectively. Each magnet, Fig. 6, comprises two coils and cores N, N<1>, of which the core N passes through a lever armature F carrying a claw g. The lever is returned by a spring r when the magnet is deenergized. The shaded areas in Fig. 5 represent the metal strips and the times of energization of the magnets, the period during which the movement is measured corresponding to the arc hd. In general, the action of the magnets is sufficiently rapid to allow of the discs 2, 3 being controlled by one magnet and two catches, one of which would be engaged and the other released. Instead of a drum T, one or more discs, quadrant contacts, and radially arranged brushes could be used. The period during which the measurement takes place could be varied by changing the speed of the regulator or by displacing the brush f1 or its contact around the drum, or again in arranging the contact for the brush f1 of variable width and displacing the brush parallel to the axis of the drum. It may be desirable to keep the brush f, stationary and to displace the drum, or the drum may be divided, the part feeding the brush f1 being displaceable along its axis. The same regulator may control several indicators in parallel. The sensibility of the device may be varied by duplicating the brushes f and moving them relatively. Instead of the electromechanical regulator, the catch gear may be actuated by a drum formed of juxtaposed cams. To change the period, helicoidal cams may be used, and double sensitiveness obtained by duplicating the catch-gear lever and placing one or the other out of action.