GB686660A - Improved weighing apparatus - Google Patents

Abstract

686,660. Weighing-apparatus. GENERAL MOTORS CORPORATION. July 11, 1951 [July 18, 1950]. No. 16397/51. Class 143. Means for investigating weight and weight distribution of an article comprises a lever 12 having members 15, 16 mounted by knife edges 14 on a rigid support 10 and a second lever 21 supported by knife edges 20 on the first lever. The lever 21 has a central support for a bracket 24 to which the article is secured by pins 26, 28. The lever 21 comprises also a rod 30 having a link 31, 32 connected by a knife edge 37, 38 to either end and each connected to an indicating pointer 71, 81. The links are similarly connected by a knife edge 74 to a rod 70 supported on the frame 10 by a knife edge 72 on a bracket 73. The pointer 71 is connected to the rod 70. The rod 70 has an arm 75 carrying pendulum resistant weights 76, 77. The main counterbalance of the system is effected by weights 53, 54 and 55 on the first lever eccentrically mounted to vary the sensitivity by varying the centre of gravity. The rod 30 has an adjustable weight 41 and fine adjustment is effected by a weight 46 on a rod 45 of the lever 21. The lever 21 has a dashpot 50, 51 on either side and limiting stops 90, 91. The weights are adjustedso that the standard article gives a zero reading on both scales. When the article is placed on the bracket 24, the first lever 12 and with it the second lever 21 descend, and the indicators record deviation from the standard weight, unequal distribution of weight causes the lever 21 to rotate and the indicators to record different readings.