Double-hook
Sometimes termed a change-hook and ram's-horn. The latter name is suggestive of its shape, which consist of two hooks, turned outwards, forged to a third one immediately underneath, which is central and turned at right angles to the double hooks above.
It is used for passing loads that are slung on the lower hook, from one crane to another, by simply inserting the block-hook of another crane into the idle-hook and hoisting until it is lifted free of the other. Down-gate, or "down-runner," sometimes termed an "upright," is the runner immediately connected with the runner basin, and leads to the casting direct, or by means of draw-gates, etc. See DRAW-RUNNER; UPRIGHT-RUNNER; GATES.