GB662464A - An improved mechanical multiplying apparatus for the integration of the product of two quantities variable in respect to time - Google Patents

Abstract

662,464. Integrating-apparatus. LANDIS & GYR SOC. ANON. Feb. 28, 1949 [March 5, 1948], No. 5442/49. Class 106 (iv). [Also in Group XX] A mechanical multiplying device for the integration of the product of quantities variable in respect to time (e.g. for use in thermal engineering), comprises a pointer (5) which is set according to the magnitude of one of the quantities (e.g. the quantity of fluid flowing through a pipe) and which periodically switches in and out an electromagnetic clutch (13) by means of a square root cam (7) continuously driven by an auxiliary motor (1), the lengths of the periods of switching being dependent on the position of the pointer, and a feeler roller (23) which coacts with a pair of control discs (27, 28) adjustable relatively to one another in accordance with another quantity (e.g. temperature) so as to transmit the rotation of the auxiliary motor to a counting mechanism which indicates the integral of the product of the quantities. The constant-speed electric or clockwork motor 1 drives, through reduction-gearing 2, a shaft carrying a gearwheel 3 and a disc 4 comprising a square-root cam 7. The pointer 5 (movable to a small extent in an axial direction) comprises a projection 8 periodically engaged by the cam 7, and a bent arm 51 which rocks the scale 9 about its shaft 10, closing contacts 11 to energize a magnet 15 which engages a crown-wheel clutch 13 to complete the drive through 3, 12, 13, 17, 171 to a counter 18. A follower roller' 23, pivoted on a shaft 26 supported by arms 19, 191, is also rotated and is spring-urged against the inner cam surfaces of rings 27, 28 which are adjusted to vary the period of engagement of a pawl 24 and ratchet-wheel 25 by means of racks 34 operated by thermosensitive elements 31 through expansion vessels 33. The counter 29 registers the quantity of heat.