GB1096224A - Fluid transferring apparatus - Google Patents

Abstract

1,096,224. Counterbalancing apparatus; liquid cargoes discharging. FMC CORPORATION. Feb. 25, 1965 [March 2, 1964], No. 8067/65. Headings B8B and B8E. A fluid transferring apparatus comprises an inner boom 30 pivoted at 26 intermediate its ends, an outer boom 45 pivoted at 38 to the outer end of the inner boom, and a counterweight 104 located at the inner end of the inner boom and coupled to the outer boom in such a way that it counteracts the turning moment of the outer and inner booms about the pivot axis 26 and the turning moment of the outer boom about the pivot axis 38. The counterweight 104 is pivotally mounted by arms 100 which are adjustably mounted on members radially extending from and secured to an inner sheave 80. The latter is journaled in the inner end of the inner boom 30 and is coupled by an adjustable tension cable 82 to an outer sheave 50 secured to the inner end of the outer boom for rotation therewith about the axis 38. Therefore, rotation of the outer boom 45 relative to the inner boom 30 causes rotation of the inner sheave 80 displacing the counterweight 104 to counterbalance the boom 45 about axis 38, the two booms being counterbalanced as one about axis 26 by displacement of the weight 104 due to displacement of the inner end of the inner boom. The booms are of tubular construction, through which fluid is transferred from a riser 19 to a tank coupling 61, elbows and swivel joints being provided at the ends of the booms. The inner boom 30 is horizontally offset from the riser 19 allowing the inner sheave and counterweight to pass thereby as the booms are rotated about the horizontal axis 26 from one side of the riser to the other.