| 摘要 |
A wheeled closure gate for maintaining opened or closed as desired an aperture disposed in a substantially horizontal plane, the gate being shiftable along tracks embracing the aperture which are so relatively inclined with respect to the horizontal plane as to permit the same to be moved upwardly along said tracks by power means into aperture-closing position. The closure gate in this particular instance is of an articulated construction having a pair of hinged-together sections which are foldable upon themselves or "jack-knifed" as the gate is shifted into its open position by suitable power means and are unfolded into coplanar relation by gravity return of the gate into its closed position. When in its jack-knifed open position, the fore section of the gate is upwardly and rearwardly inclined as an extension of the back wall of an incinerator charging hopper with which the gate may be associated to deflect back into the hopper rubbish which would otherwise not be received by the hopper. The tracks for the wheeled gate are of a construction which largely prevents accumulation of debris thereon during charging of the hopper and thus are self-cleaning, the undesired accumulation of debris being further prevented by the aforesaid deflecting shields as well as by locating the tracks inboard of the top edges of the hopper side walls. The gate of the instant construction may be combined with the charging hopper as a unitary assembly thereof.
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