GB352925A - Improvements in rotary meters for liquids, fluids, and granular or powdered materials - Google Patents

Abstract

352,925. Rotary meters. RIPPINGILLE, E. O., Constitutional Club, Northumberland Avenue, London. Jan. 14, 1930, No. 1286. [Class 110 (ii).] Impulse and reaction meters.-A meter for a fluid or powdered material comprises a fixed casing and a fixed central disc 18, Fig. 3, and an endless chamber 1 around which flows the fluid to be metered. The fluid moves a ball or other shaped piston 11 with it the ball making contact with mechanical, electrical or magnetic indicating, recording or counting mechanism. In Figs 3 the ball operates a rocking arm 42 and pawls 46, 49 which turn a toothed wheel 47 on a spindle 48. The fluid is delivered by way of a tangential port 8 and the ball is returned to the dotted position by gravity. More than one ball may be used, and they may move freely in recesses in a revolving plate 29, Fig. 10, which has internal teeth meshing with a toothed wheel 31, or each ball may turn an arm or all the balls turn a central disc and with it a central spindle which operates the indicating mechanism. Fluid may enter through the top tangential port and by its weight move the balls and attached disc around the central spindle. In an alternative arrangement a series of balls are kept apart by distance pieces and the balls attract a magnet at one point in the fixed central disc and the magnet operates a pawl and toothed wheel. A make-and-break electrical circuit may replace the magnet device. The endless chamber may be other than circular, as for instance triangular or rectangular each with rounded corners, or as shown in Fig. 16, the chamber may be spiral with inlet 6 and outlet 8, and the ball have a return passage 36. Fluid may be fed to the endless chamber from the centre of the fixed disc through a series of curved passages, and leave by way of a tangential port. Fig. 18 illustrates another form of construction in which fluid is admitted through a port 6 and chamber 39 and is fed into an inner chamber through inclined ducts 40. An outwardlysliding abutment may be provided between the inlet and outlet ports comprising a spring-loaded slide which is moved outwards by a cam to allow the ball to pass. The Provisional Specification states that in the case of a disc or arm operated by balls, reverse rotation of the central spindle may be prevented by a pawl and ratchet mechanism.