GB517907A - Improvements in weighing scales - Google Patents

Abstract

517,907. Weighing apparatus. TOLEDO SCALE MANUFACTURING CO. Sept. 2, 1938, No. 25729. Convention date, Nov 12, 1937. [Class 143] In a weighing scale of the predetermined weight type having a pair of load supports pivotally carried by an even-armed lever which is pivoted on a fixed axis in the frame, one of the load supports is connected, by a pair of opposed resisting elements to a pointer pivoted on. a fixed axis in the frame. The pointer 37 is mounted on a ball bearing 35 carried by a. clamp 34 adjustable on a vertical rod 32 carrying the indicating chart 38. The vertical rod is supported by a plate projecting from the frame. Attached to the pointer are two arms 40 each secured to the centre of a spiral spring 41. The outer coils of the springs are clamped between a pair of members 46 carried by an L-shaped bracket 52 mounted on an arm 53 extending from the loading box 17 of the counterpoise platter spider 16. The L-shaped bracket 52 may be adjusted towards or away from the spiral springs to vary the resistance of the springs. By adjusting the outer coils of the springs in the. clamp 46 the' extent of throw of the pointer to one side or the other of the zero may be varied. The platters 19 have downwardly depending flanges to exclude dirt. An external notched beam with an adjustable poise weight is connected to the even-armed lever 7 'by cranked brackets passing between the frame 1 and the depending flanges of the platters. The upper end of the indicator housing 61 may be provided with a carrying handle. In a modification the pointer may be arranged to oscillate transversely instead of longitudinally of the apparatus. In a further modification, the pointer is located at one end of the apparatus, the position of the platter spider and arm 53 being reversed and the frame 1 being extended to support th indicator housing. Specification 495,134 is referred to.