UN REGULADOR ELÉCTRICO DEL TIPO DE PILA DE CARBÓN.

摘要

562,191. Compression resistances. STONE & CO., Ltd., J., and CROTCH, W. A. Dec. 16, 1942, No. 17874. [Class 37] In a carbon pile regulator wherein a friction tight pivotal joint is provided between the presser means engaging the pile or piles and the pressure applying system which is operative for compressing the pile or piles, this joint is arranged so that upon transmission of maximum compression forces the frictional tightness is eased or substantially removed but is restored as the compression forces are reduced. The carbon pile of a single-pile regulator consists of superposed carbon rings a with a collector ring b at the top-surmounted by a presser ring c. This is formed with a diametral cross-bar c1 to which is jointed an axial rod d connected with the magnet-operated system of the regulator, the lower end of the rod d is forked and between the prongs of the fork a small block e is fixed by rivets f. The upper surface of this block is spherical and engages a conical seating on the cross-bar c1. Downwardly projecting pins g are fixed to the cross-bar c1 and carry springs j which exert upward pressure against a yoke h slidably mounted on the pins. This yoke is formed with a projection h1 which engages the flat lower surface of the block e and forms a pivot. Normally the rod d is depressed by a loading spring and applies maximum compression to the pile by depressing the yoke h and thereby further compressing the springs j, so that extra pressure is applied to the presser ring c. At the same time the spherical surface of the block e is loosened from engagement with the conical seating surface and the presser ring c is free to adjust itself so as to apply pressure equally around the pile rings. When the rod d is lifted by the electromagnet of the regulator to increase the resistance of the pile, the spherical surface of the block e is forced against its seat by the springs j so that the ring c is held in its adjusted position. The springs are preferably initially adjusted so that their combined force is about equal to the maximum compression force applied to the rod d. Modifications are described having two and three piles, in the former case the spherical surface of the block e being replaced by a cylindrical surface.